Merge branches 'clk-aspeed', 'clk-lock-UP', 'clk-mediatek' and 'clk-allwinner' into clk-next

* clk-aspeed:
  clk: aspeed: Handle inverse polarity of USB port 1 clock gate
  clk: aspeed: Fix return value check in aspeed_cc_init()
  clk: aspeed: Add reset controller
  clk: aspeed: Register gated clocks
  clk: aspeed: Add platform driver and register PLLs
  clk: aspeed: Register core clocks
  clk: Add clock driver for ASPEED BMC SoCs
  dt-bindings: clock: Add ASPEED constants

* clk-lock-UP:
  clk: fix reentrancy of clk_enable() on UP systems

* clk-mediatek:
  clk: mediatek: adjust dependency of reset.c to avoid unexpectedly being built
  clk: mediatek: Fix all warnings for missing struct clk_onecell_data
  clk: mediatek: fixup test-building of MediaTek clock drivers
  clk: mediatek: group drivers under indpendent menu

* clk-allwinner:
  clk: sunxi-ng: a83t: Add M divider to TCON1 clock
  clk: sunxi-ng: fix the A64/H5 clock description of DE2 CCU
  clk: sunxi-ng: add support for Allwinner H3 DE2 CCU
  dt-bindings: fix the binding of Allwinner DE2 CCU of A83T and H3
  clk: sunxi-ng: sun8i: a83t: Use sigma-delta modulation for audio PLL
  clk: sunxi-ng: sun8i: a83t: Add /2 fixed post divider to audio PLL
  clk: sunxi-ng: Support fixed post-dividers on NM style clocks
  clk: sunxi-ng: sun50i: a64: Add 2x fixed post-divider to MMC module clocks
  clk: sunxi-ng: Support fixed post-dividers on MP style clocks
  clk: sunxi: Use PTR_ERR_OR_ZERO()

Documentation/devicetree/bindings/clock/sun8i-de2.txt

@@ -4,13 +4,14 @@ Allwinner Display Engine 2.0 Clock Control Binding
 Required properties :
 - compatible: must contain one of the following compatibles:
 		- "allwinner,sun8i-a83t-de2-clk"
+		- "allwinner,sun8i-h3-de2-clk"
 		- "allwinner,sun8i-v3s-de2-clk"
 		- "allwinner,sun50i-h5-de2-clk"
 
 - reg: Must contain the registers base address and length
 - clocks: phandle to the clocks feeding the display engine subsystem.
 	  Three are needed:
-  - "mod": the display engine module clock
+  - "mod": the display engine module clock (on A83T it's the DE PLL)
   - "bus": the bus clock for the whole display engine subsystem
 - clock-names: Must contain the clock names described just above
 - resets: phandle to the reset control for the display engine subsystem.
@@ -19,7 +20,7 @@ Required properties :
 
 Example:
 de2_clocks: clock@1000000 {
-	compatible = "allwinner,sun8i-a83t-de2-clk";
+	compatible = "allwinner,sun8i-h3-de2-clk";
 	reg = <0x01000000 0x100000>;
 	clocks = <&ccu CLK_BUS_DE>,
 		 <&ccu CLK_DE>;

drivers/clk/Kconfig

@@ -142,6 +142,18 @@ config COMMON_CLK_GEMINI
 	  This driver supports the SoC clocks on the Cortina Systems Gemini
 	  platform, also known as SL3516 or CS3516.
 
+config COMMON_CLK_ASPEED
+	bool "Clock driver for Aspeed BMC SoCs"
+	depends on ARCH_ASPEED || COMPILE_TEST
+	default ARCH_ASPEED
+	select MFD_SYSCON
+	select RESET_CONTROLLER
+	---help---
+	  This driver supports the SoC clocks on the Aspeed BMC platforms.
+
+	  The G4 and G5 series, including the ast2400 and ast2500, are supported
+	  by this driver.
+
 config COMMON_CLK_S2MPS11
 	tristate "Clock driver for S2MPS1X/S5M8767 MFD"
 	depends on MFD_SEC_CORE || COMPILE_TEST

drivers/clk/Makefile

@@ -27,6 +27,7 @@ obj-$(CONFIG_ARCH_CLPS711X)		+= clk-clps711x.o
 obj-$(CONFIG_COMMON_CLK_CS2000_CP)	+= clk-cs2000-cp.o
 obj-$(CONFIG_ARCH_EFM32)		+= clk-efm32gg.o
 obj-$(CONFIG_COMMON_CLK_GEMINI)		+= clk-gemini.o
+obj-$(CONFIG_COMMON_CLK_ASPEED)		+= clk-aspeed.o
 obj-$(CONFIG_ARCH_HIGHBANK)		+= clk-highbank.o
 obj-$(CONFIG_CLK_HSDK)			+= clk-hsdk-pll.o
 obj-$(CONFIG_COMMON_CLK_MAX77686)	+= clk-max77686.o
@@ -67,7 +68,7 @@ obj-$(CONFIG_ARCH_MXC)			+= imx/
 obj-$(CONFIG_MACH_INGENIC)		+= ingenic/
 obj-$(CONFIG_ARCH_KEYSTONE)		+= keystone/
 obj-$(CONFIG_MACH_LOONGSON32)		+= loongson1/
-obj-$(CONFIG_ARCH_MEDIATEK)		+= mediatek/
+obj-y					+= mediatek/
 obj-$(CONFIG_COMMON_CLK_AMLOGIC)	+= meson/
 obj-$(CONFIG_MACH_PIC32)		+= microchip/
 ifeq ($(CONFIG_COMMON_CLK), y)

drivers/clk/clk-aspeed.c

@@ -0,0 +1,667 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#define pr_fmt(fmt) "clk-aspeed: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
+#include <dt-bindings/clock/aspeed-clock.h>
+
+#define ASPEED_NUM_CLKS		35
+
+#define ASPEED_RESET_CTRL	0x04
+#define ASPEED_CLK_SELECTION	0x08
+#define ASPEED_CLK_STOP_CTRL	0x0c
+#define ASPEED_MPLL_PARAM	0x20
+#define ASPEED_HPLL_PARAM	0x24
+#define  AST2500_HPLL_BYPASS_EN	BIT(20)
+#define  AST2400_HPLL_STRAPPED	BIT(18)
+#define  AST2400_HPLL_BYPASS_EN	BIT(17)
+#define ASPEED_MISC_CTRL	0x2c
+#define  UART_DIV13_EN		BIT(12)
+#define ASPEED_STRAP		0x70
+#define  CLKIN_25MHZ_EN		BIT(23)
+#define  AST2400_CLK_SOURCE_SEL	BIT(18)
+#define ASPEED_CLK_SELECTION_2	0xd8
+
+/* Globally visible clocks */
+static DEFINE_SPINLOCK(aspeed_clk_lock);
+
+/* Keeps track of all clocks */
+static struct clk_hw_onecell_data *aspeed_clk_data;
+
+static void __iomem *scu_base;
+
+/**
+ * struct aspeed_gate_data - Aspeed gated clocks
+ * @clock_idx: bit used to gate this clock in the clock register
+ * @reset_idx: bit used to reset this IP in the reset register. -1 if no
+ *             reset is required when enabling the clock
+ * @name: the clock name
+ * @parent_name: the name of the parent clock
+ * @flags: standard clock framework flags
+ */
+struct aspeed_gate_data {
+	u8		clock_idx;
+	s8		reset_idx;
+	const char	*name;
+	const char	*parent_name;
+	unsigned long	flags;
+};
+
+/**
+ * struct aspeed_clk_gate - Aspeed specific clk_gate structure
+ * @hw:		handle between common and hardware-specific interfaces
+ * @reg:	register controlling gate
+ * @clock_idx:	bit used to gate this clock in the clock register
+ * @reset_idx:	bit used to reset this IP in the reset register. -1 if no
+ *		reset is required when enabling the clock
+ * @flags:	hardware-specific flags
+ * @lock:	register lock
+ *
+ * Some of the clocks in the Aspeed SoC must be put in reset before enabling.
+ * This modified version of clk_gate allows an optional reset bit to be
+ * specified.
+ */
+struct aspeed_clk_gate {
+	struct clk_hw	hw;
+	struct regmap	*map;
+	u8		clock_idx;
+	s8		reset_idx;
+	u8		flags;
+	spinlock_t	*lock;
+};
+
+#define to_aspeed_clk_gate(_hw) container_of(_hw, struct aspeed_clk_gate, hw)
+
+/* TODO: ask Aspeed about the actual parent data */
+static const struct aspeed_gate_data aspeed_gates[] = {
+	/*				 clk rst   name			parent	flags */
+	[ASPEED_CLK_GATE_ECLK] =	{  0, -1, "eclk-gate",		"eclk",	0 }, /* Video Engine */
+	[ASPEED_CLK_GATE_GCLK] =	{  1,  7, "gclk-gate",		NULL,	0 }, /* 2D engine */
+	[ASPEED_CLK_GATE_MCLK] =	{  2, -1, "mclk-gate",		"mpll",	CLK_IS_CRITICAL }, /* SDRAM */
+	[ASPEED_CLK_GATE_VCLK] =	{  3,  6, "vclk-gate",		NULL,	0 }, /* Video Capture */
+	[ASPEED_CLK_GATE_BCLK] =	{  4, 10, "bclk-gate",		"bclk",	0 }, /* PCIe/PCI */
+	[ASPEED_CLK_GATE_DCLK] =	{  5, -1, "dclk-gate",		NULL,	0 }, /* DAC */
+	[ASPEED_CLK_GATE_REFCLK] =	{  6, -1, "refclk-gate",	"clkin", CLK_IS_CRITICAL },
+	[ASPEED_CLK_GATE_USBPORT2CLK] =	{  7,  3, "usb-port2-gate",	NULL,	0 }, /* USB2.0 Host port 2 */
+	[ASPEED_CLK_GATE_LCLK] =	{  8,  5, "lclk-gate",		NULL,	0 }, /* LPC */
+	[ASPEED_CLK_GATE_USBUHCICLK] =	{  9, 15, "usb-uhci-gate",	NULL,	0 }, /* USB1.1 (requires port 2 enabled) */
+	[ASPEED_CLK_GATE_D1CLK] =	{ 10, 13, "d1clk-gate",		NULL,	0 }, /* GFX CRT */
+	[ASPEED_CLK_GATE_YCLK] =	{ 13,  4, "yclk-gate",		NULL,	0 }, /* HAC */
+	[ASPEED_CLK_GATE_USBPORT1CLK] = { 14, 14, "usb-port1-gate",	NULL,	0 }, /* USB2 hub/USB2 host port 1/USB1.1 dev */
+	[ASPEED_CLK_GATE_UART1CLK] =	{ 15, -1, "uart1clk-gate",	"uart",	0 }, /* UART1 */
+	[ASPEED_CLK_GATE_UART2CLK] =	{ 16, -1, "uart2clk-gate",	"uart",	0 }, /* UART2 */
+	[ASPEED_CLK_GATE_UART5CLK] =	{ 17, -1, "uart5clk-gate",	"uart",	0 }, /* UART5 */
+	[ASPEED_CLK_GATE_ESPICLK] =	{ 19, -1, "espiclk-gate",	NULL,	0 }, /* eSPI */
+	[ASPEED_CLK_GATE_MAC1CLK] =	{ 20, 11, "mac1clk-gate",	"mac",	0 }, /* MAC1 */
+	[ASPEED_CLK_GATE_MAC2CLK] =	{ 21, 12, "mac2clk-gate",	"mac",	0 }, /* MAC2 */
+	[ASPEED_CLK_GATE_RSACLK] =	{ 24, -1, "rsaclk-gate",	NULL,	0 }, /* RSA */
+	[ASPEED_CLK_GATE_UART3CLK] =	{ 25, -1, "uart3clk-gate",	"uart",	0 }, /* UART3 */
+	[ASPEED_CLK_GATE_UART4CLK] =	{ 26, -1, "uart4clk-gate",	"uart",	0 }, /* UART4 */
+	[ASPEED_CLK_GATE_SDCLKCLK] =	{ 27, 16, "sdclk-gate",		NULL,	0 }, /* SDIO/SD */
+	[ASPEED_CLK_GATE_LHCCLK] =	{ 28, -1, "lhclk-gate",		"lhclk", 0 }, /* LPC master/LPC+ */
+};
+
+static const struct clk_div_table ast2500_mac_div_table[] = {
+	{ 0x0, 4 }, /* Yep, really. Aspeed confirmed this is correct */
+	{ 0x1, 4 },
+	{ 0x2, 6 },
+	{ 0x3, 8 },
+	{ 0x4, 10 },
+	{ 0x5, 12 },
+	{ 0x6, 14 },
+	{ 0x7, 16 },
+	{ 0 }
+};
+
+static const struct clk_div_table ast2400_div_table[] = {
+	{ 0x0, 2 },
+	{ 0x1, 4 },
+	{ 0x2, 6 },
+	{ 0x3, 8 },
+	{ 0x4, 10 },
+	{ 0x5, 12 },
+	{ 0x6, 14 },
+	{ 0x7, 16 },
+	{ 0 }
+};
+
+static const struct clk_div_table ast2500_div_table[] = {
+	{ 0x0, 4 },
+	{ 0x1, 8 },
+	{ 0x2, 12 },
+	{ 0x3, 16 },
+	{ 0x4, 20 },
+	{ 0x5, 24 },
+	{ 0x6, 28 },
+	{ 0x7, 32 },
+	{ 0 }
+};
+
+static struct clk_hw *aspeed_ast2400_calc_pll(const char *name, u32 val)
+{
+	unsigned int mult, div;
+
+	if (val & AST2400_HPLL_BYPASS_EN) {
+		/* Pass through mode */
+		mult = div = 1;
+	} else {
+		/* F = 24Mhz * (2-OD) * [(N + 2) / (D + 1)] */
+		u32 n = (val >> 5) & 0x3f;
+		u32 od = (val >> 4) & 0x1;
+		u32 d = val & 0xf;
+
+		mult = (2 - od) * (n + 2);
+		div = d + 1;
+	}
+	return clk_hw_register_fixed_factor(NULL, name, "clkin", 0,
+			mult, div);
+};
+
+static struct clk_hw *aspeed_ast2500_calc_pll(const char *name, u32 val)
+{
+	unsigned int mult, div;
+
+	if (val & AST2500_HPLL_BYPASS_EN) {
+		/* Pass through mode */
+		mult = div = 1;
+	} else {
+		/* F = clkin * [(M+1) / (N+1)] / (P + 1) */
+		u32 p = (val >> 13) & 0x3f;
+		u32 m = (val >> 5) & 0xff;
+		u32 n = val & 0x1f;
+
+		mult = (m + 1) / (n + 1);
+		div = p + 1;
+	}
+
+	return clk_hw_register_fixed_factor(NULL, name, "clkin", 0,
+			mult, div);
+}
+
+struct aspeed_clk_soc_data {
+	const struct clk_div_table *div_table;
+	const struct clk_div_table *mac_div_table;
+	struct clk_hw *(*calc_pll)(const char *name, u32 val);
+};
+
+static const struct aspeed_clk_soc_data ast2500_data = {
+	.div_table = ast2500_div_table,
+	.mac_div_table = ast2500_mac_div_table,
+	.calc_pll = aspeed_ast2500_calc_pll,
+};
+
+static const struct aspeed_clk_soc_data ast2400_data = {
+	.div_table = ast2400_div_table,
+	.mac_div_table = ast2400_div_table,
+	.calc_pll = aspeed_ast2400_calc_pll,
+};
+
+static int aspeed_clk_enable(struct clk_hw *hw)
+{
+	struct aspeed_clk_gate *gate = to_aspeed_clk_gate(hw);
+	unsigned long flags;
+	u32 clk = BIT(gate->clock_idx);
+	u32 rst = BIT(gate->reset_idx);
+	u32 enval;
+
+	spin_lock_irqsave(gate->lock, flags);
+
+	if (gate->reset_idx >= 0) {
+		/* Put IP in reset */
+		regmap_update_bits(gate->map, ASPEED_RESET_CTRL, rst, rst);
+
+		/* Delay 100us */
+		udelay(100);
+	}
+
+	/* Enable clock */
+	enval = (gate->flags & CLK_GATE_SET_TO_DISABLE) ? 0 : clk;
+	regmap_update_bits(gate->map, ASPEED_CLK_STOP_CTRL, clk, enval);
+
+	if (gate->reset_idx >= 0) {
+		/* A delay of 10ms is specified by the ASPEED docs */
+		mdelay(10);
+
+		/* Take IP out of reset */
+		regmap_update_bits(gate->map, ASPEED_RESET_CTRL, rst, 0);
+	}
+
+	spin_unlock_irqrestore(gate->lock, flags);
+
+	return 0;
+}
+
+static void aspeed_clk_disable(struct clk_hw *hw)
+{
+	struct aspeed_clk_gate *gate = to_aspeed_clk_gate(hw);
+	unsigned long flags;
+	u32 clk = BIT(gate->clock_idx);
+	u32 enval;
+
+	spin_lock_irqsave(gate->lock, flags);
+
+	enval = (gate->flags & CLK_GATE_SET_TO_DISABLE) ? clk : 0;
+	regmap_update_bits(gate->map, ASPEED_CLK_STOP_CTRL, clk, enval);
+
+	spin_unlock_irqrestore(gate->lock, flags);
+}
+
+static int aspeed_clk_is_enabled(struct clk_hw *hw)
+{
+	struct aspeed_clk_gate *gate = to_aspeed_clk_gate(hw);
+	u32 clk = BIT(gate->clock_idx);
+	u32 reg;
+
+	regmap_read(gate->map, ASPEED_CLK_STOP_CTRL, &reg);
+
+	return (reg & clk) ? 0 : 1;
+}
+
+static const struct clk_ops aspeed_clk_gate_ops = {
+	.enable = aspeed_clk_enable,
+	.disable = aspeed_clk_disable,
+	.is_enabled = aspeed_clk_is_enabled,
+};
+
+/**
+ * struct aspeed_reset - Aspeed reset controller
+ * @map: regmap to access the containing system controller
+ * @rcdev: reset controller device
+ */
+struct aspeed_reset {
+	struct regmap			*map;
+	struct reset_controller_dev	rcdev;
+};
+
+#define to_aspeed_reset(p) container_of((p), struct aspeed_reset, rcdev)
+
+static const u8 aspeed_resets[] = {
+	[ASPEED_RESET_XDMA]	= 25,
+	[ASPEED_RESET_MCTP]	= 24,
+	[ASPEED_RESET_ADC]	= 23,
+	[ASPEED_RESET_JTAG_MASTER] = 22,
+	[ASPEED_RESET_MIC]	= 18,
+	[ASPEED_RESET_PWM]	=  9,
+	[ASPEED_RESET_PCIVGA]	=  8,
+	[ASPEED_RESET_I2C]	=  2,
+	[ASPEED_RESET_AHB]	=  1,
+};
+
+static int aspeed_reset_deassert(struct reset_controller_dev *rcdev,
+				 unsigned long id)
+{
+	struct aspeed_reset *ar = to_aspeed_reset(rcdev);
+	u32 rst = BIT(aspeed_resets[id]);
+
+	return regmap_update_bits(ar->map, ASPEED_RESET_CTRL, rst, 0);
+}
+
+static int aspeed_reset_assert(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct aspeed_reset *ar = to_aspeed_reset(rcdev);
+	u32 rst = BIT(aspeed_resets[id]);
+
+	return regmap_update_bits(ar->map, ASPEED_RESET_CTRL, rst, rst);
+}
+
+static int aspeed_reset_status(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct aspeed_reset *ar = to_aspeed_reset(rcdev);
+	u32 val, rst = BIT(aspeed_resets[id]);
+	int ret;
+
+	ret = regmap_read(ar->map, ASPEED_RESET_CTRL, &val);
+	if (ret)
+		return ret;
+
+	return !!(val & rst);
+}
+
+static const struct reset_control_ops aspeed_reset_ops = {
+	.assert = aspeed_reset_assert,
+	.deassert = aspeed_reset_deassert,
+	.status = aspeed_reset_status,
+};
+
+static struct clk_hw *aspeed_clk_hw_register_gate(struct device *dev,
+		const char *name, const char *parent_name, unsigned long flags,
+		struct regmap *map, u8 clock_idx, u8 reset_idx,
+		u8 clk_gate_flags, spinlock_t *lock)
+{
+	struct aspeed_clk_gate *gate;
+	struct clk_init_data init;
+	struct clk_hw *hw;
+	int ret;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &aspeed_clk_gate_ops;
+	init.flags = flags;
+	init.parent_names = parent_name ? &parent_name : NULL;
+	init.num_parents = parent_name ? 1 : 0;
+
+	gate->map = map;
+	gate->clock_idx = clock_idx;
+	gate->reset_idx = reset_idx;
+	gate->flags = clk_gate_flags;
+	gate->lock = lock;
+	gate->hw.init = &init;
+
+	hw = &gate->hw;
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(gate);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+static int aspeed_clk_probe(struct platform_device *pdev)
+{
+	const struct aspeed_clk_soc_data *soc_data;
+	struct device *dev = &pdev->dev;
+	struct aspeed_reset *ar;
+	struct regmap *map;
+	struct clk_hw *hw;
+	u32 val, rate;
+	int i, ret;
+
+	map = syscon_node_to_regmap(dev->of_node);
+	if (IS_ERR(map)) {
+		dev_err(dev, "no syscon regmap\n");
+		return PTR_ERR(map);
+	}
+
+	ar = devm_kzalloc(dev, sizeof(*ar), GFP_KERNEL);
+	if (!ar)
+		return -ENOMEM;
+
+	ar->map = map;
+	ar->rcdev.owner = THIS_MODULE;
+	ar->rcdev.nr_resets = ARRAY_SIZE(aspeed_resets);
+	ar->rcdev.ops = &aspeed_reset_ops;
+	ar->rcdev.of_node = dev->of_node;
+
+	ret = devm_reset_controller_register(dev, &ar->rcdev);
+	if (ret) {
+		dev_err(dev, "could not register reset controller\n");
+		return ret;
+	}
+
+	/* SoC generations share common layouts but have different divisors */
+	soc_data = of_device_get_match_data(dev);
+	if (!soc_data) {
+		dev_err(dev, "no match data for platform\n");
+		return -EINVAL;
+	}
+
+	/* UART clock div13 setting */
+	regmap_read(map, ASPEED_MISC_CTRL, &val);
+	if (val & UART_DIV13_EN)
+		rate = 24000000 / 13;
+	else
+		rate = 24000000;
+	/* TODO: Find the parent data for the uart clock */
+	hw = clk_hw_register_fixed_rate(dev, "uart", NULL, 0, rate);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	aspeed_clk_data->hws[ASPEED_CLK_UART] = hw;
+
+	/*
+	 * Memory controller (M-PLL) PLL. This clock is configured by the
+	 * bootloader, and is exposed to Linux as a read-only clock rate.
+	 */
+	regmap_read(map, ASPEED_MPLL_PARAM, &val);
+	hw = soc_data->calc_pll("mpll", val);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	aspeed_clk_data->hws[ASPEED_CLK_MPLL] =	hw;
+
+	/* SD/SDIO clock divider (TODO: There's a gate too) */
+	hw = clk_hw_register_divider_table(dev, "sdio", "hpll", 0,
+			scu_base + ASPEED_CLK_SELECTION, 12, 3, 0,
+			soc_data->div_table,
+			&aspeed_clk_lock);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	aspeed_clk_data->hws[ASPEED_CLK_SDIO] = hw;
+
+	/* MAC AHB bus clock divider */
+	hw = clk_hw_register_divider_table(dev, "mac", "hpll", 0,
+			scu_base + ASPEED_CLK_SELECTION, 16, 3, 0,
+			soc_data->mac_div_table,
+			&aspeed_clk_lock);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	aspeed_clk_data->hws[ASPEED_CLK_MAC] = hw;
+
+	/* LPC Host (LHCLK) clock divider */
+	hw = clk_hw_register_divider_table(dev, "lhclk", "hpll", 0,
+			scu_base + ASPEED_CLK_SELECTION, 20, 3, 0,
+			soc_data->div_table,
+			&aspeed_clk_lock);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	aspeed_clk_data->hws[ASPEED_CLK_LHCLK] = hw;
+
+	/* P-Bus (BCLK) clock divider */
+	hw = clk_hw_register_divider_table(dev, "bclk", "hpll", 0,
+			scu_base + ASPEED_CLK_SELECTION_2, 0, 2, 0,
+			soc_data->div_table,
+			&aspeed_clk_lock);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	aspeed_clk_data->hws[ASPEED_CLK_BCLK] = hw;
+
+	/*
+	 * TODO: There are a number of clocks that not included in this driver
+	 * as more information is required:
+	 *   D2-PLL
+	 *   D-PLL
+	 *   YCLK
+	 *   RGMII
+	 *   RMII
+	 *   UART[1..5] clock source mux
+	 *   Video Engine (ECLK) mux and clock divider
+	 */
+
+	for (i = 0; i < ARRAY_SIZE(aspeed_gates); i++) {
+		const struct aspeed_gate_data *gd = &aspeed_gates[i];
+		u32 gate_flags;
+
+		/* Special case: the USB port 1 clock (bit 14) is always
+		 * working the opposite way from the other ones.
+		 */
+		gate_flags = (gd->clock_idx == 14) ? 0 : CLK_GATE_SET_TO_DISABLE;
+		hw = aspeed_clk_hw_register_gate(dev,
+				gd->name,
+				gd->parent_name,
+				gd->flags,
+				map,
+				gd->clock_idx,
+				gd->reset_idx,
+				gate_flags,
+				&aspeed_clk_lock);
+		if (IS_ERR(hw))
+			return PTR_ERR(hw);
+		aspeed_clk_data->hws[i] = hw;
+	}
+
+	return 0;
+};
+
+static const struct of_device_id aspeed_clk_dt_ids[] = {
+	{ .compatible = "aspeed,ast2400-scu", .data = &ast2400_data },
+	{ .compatible = "aspeed,ast2500-scu", .data = &ast2500_data },
+	{ }
+};
+
+static struct platform_driver aspeed_clk_driver = {
+	.probe  = aspeed_clk_probe,
+	.driver = {
+		.name = "aspeed-clk",
+		.of_match_table = aspeed_clk_dt_ids,
+		.suppress_bind_attrs = true,
+	},
+};
+builtin_platform_driver(aspeed_clk_driver);
+
+static void __init aspeed_ast2400_cc(struct regmap *map)
+{
+	struct clk_hw *hw;
+	u32 val, freq, div;
+
+	/*
+	 * CLKIN is the crystal oscillator, 24, 48 or 25MHz selected by
+	 * strapping
+	 */
+	regmap_read(map, ASPEED_STRAP, &val);
+	if (val & CLKIN_25MHZ_EN)
+		freq = 25000000;
+	else if (val & AST2400_CLK_SOURCE_SEL)
+		freq = 48000000;
+	else
+		freq = 24000000;
+	hw = clk_hw_register_fixed_rate(NULL, "clkin", NULL, 0, freq);
+	pr_debug("clkin @%u MHz\n", freq / 1000000);
+
+	/*
+	 * High-speed PLL clock derived from the crystal. This the CPU clock,
+	 * and we assume that it is enabled
+	 */
+	regmap_read(map, ASPEED_HPLL_PARAM, &val);
+	WARN(val & AST2400_HPLL_STRAPPED, "hpll is strapped not configured");
+	aspeed_clk_data->hws[ASPEED_CLK_HPLL] = aspeed_ast2400_calc_pll("hpll", val);
+
+	/*
+	 * Strap bits 11:10 define the CPU/AHB clock frequency ratio (aka HCLK)
+	 *   00: Select CPU:AHB = 1:1
+	 *   01: Select CPU:AHB = 2:1
+	 *   10: Select CPU:AHB = 4:1
+	 *   11: Select CPU:AHB = 3:1
+	 */
+	regmap_read(map, ASPEED_STRAP, &val);
+	val = (val >> 10) & 0x3;
+	div = val + 1;
+	if (div == 3)
+		div = 4;
+	else if (div == 4)
+		div = 3;
+	hw = clk_hw_register_fixed_factor(NULL, "ahb", "hpll", 0, 1, div);
+	aspeed_clk_data->hws[ASPEED_CLK_AHB] = hw;
+
+	/* APB clock clock selection register SCU08 (aka PCLK) */
+	hw = clk_hw_register_divider_table(NULL, "apb", "hpll", 0,
+			scu_base + ASPEED_CLK_SELECTION, 23, 3, 0,
+			ast2400_div_table,
+			&aspeed_clk_lock);
+	aspeed_clk_data->hws[ASPEED_CLK_APB] = hw;
+}
+
+static void __init aspeed_ast2500_cc(struct regmap *map)
+{
+	struct clk_hw *hw;
+	u32 val, freq, div;
+
+	/* CLKIN is the crystal oscillator, 24 or 25MHz selected by strapping */
+	regmap_read(map, ASPEED_STRAP, &val);
+	if (val & CLKIN_25MHZ_EN)
+		freq = 25000000;
+	else
+		freq = 24000000;
+	hw = clk_hw_register_fixed_rate(NULL, "clkin", NULL, 0, freq);
+	pr_debug("clkin @%u MHz\n", freq / 1000000);
+
+	/*
+	 * High-speed PLL clock derived from the crystal. This the CPU clock,
+	 * and we assume that it is enabled
+	 */
+	regmap_read(map, ASPEED_HPLL_PARAM, &val);
+	aspeed_clk_data->hws[ASPEED_CLK_HPLL] = aspeed_ast2500_calc_pll("hpll", val);
+
+	/* Strap bits 11:9 define the AXI/AHB clock frequency ratio (aka HCLK)*/
+	regmap_read(map, ASPEED_STRAP, &val);
+	val = (val >> 9) & 0x7;
+	WARN(val == 0, "strapping is zero: cannot determine ahb clock");
+	div = 2 * (val + 1);
+	hw = clk_hw_register_fixed_factor(NULL, "ahb", "hpll", 0, 1, div);
+	aspeed_clk_data->hws[ASPEED_CLK_AHB] = hw;
+
+	/* APB clock clock selection register SCU08 (aka PCLK) */
+	regmap_read(map, ASPEED_CLK_SELECTION, &val);
+	val = (val >> 23) & 0x7;
+	div = 4 * (val + 1);
+	hw = clk_hw_register_fixed_factor(NULL, "apb", "hpll", 0, 1, div);
+	aspeed_clk_data->hws[ASPEED_CLK_APB] = hw;
+};
+
+static void __init aspeed_cc_init(struct device_node *np)
+{
+	struct regmap *map;
+	u32 val;
+	int ret;
+	int i;
+
+	scu_base = of_iomap(np, 0);
+	if (!scu_base)
+		return;
+
+	aspeed_clk_data = kzalloc(sizeof(*aspeed_clk_data) +
+			sizeof(*aspeed_clk_data->hws) * ASPEED_NUM_CLKS,
+			GFP_KERNEL);
+	if (!aspeed_clk_data)
+		return;
+
+	/*
+	 * This way all clocks fetched before the platform device probes,
+	 * except those we assign here for early use, will be deferred.
+	 */
+	for (i = 0; i < ASPEED_NUM_CLKS; i++)
+		aspeed_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);
+
+	map = syscon_node_to_regmap(np);
+	if (IS_ERR(map)) {
+		pr_err("no syscon regmap\n");
+		return;
+	}
+	/*
+	 * We check that the regmap works on this very first access,
+	 * but as this is an MMIO-backed regmap, subsequent regmap
+	 * access is not going to fail and we skip error checks from
+	 * this point.
+	 */
+	ret = regmap_read(map, ASPEED_STRAP, &val);
+	if (ret) {
+		pr_err("failed to read strapping register\n");
+		return;
+	}
+
+	if (of_device_is_compatible(np, "aspeed,ast2400-scu"))
+		aspeed_ast2400_cc(map);
+	else if (of_device_is_compatible(np, "aspeed,ast2500-scu"))
+		aspeed_ast2500_cc(map);
+	else
+		pr_err("unknown platform, failed to add clocks\n");
+
+	aspeed_clk_data->num = ASPEED_NUM_CLKS;
+	ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, aspeed_clk_data);
+	if (ret)
+		pr_err("failed to add DT provider: %d\n", ret);
+};
+CLK_OF_DECLARE_DRIVER(aspeed_cc_g5, "aspeed,ast2500-scu", aspeed_cc_init);
+CLK_OF_DECLARE_DRIVER(aspeed_cc_g4, "aspeed,ast2400-scu", aspeed_cc_init);

drivers/clk/clk.c

@@ -144,10 +144,18 @@ static unsigned long clk_enable_lock(void)
 {
 	unsigned long flags;
 
-	if (!spin_trylock_irqsave(&enable_lock, flags)) {
+	/*
+	 * On UP systems, spin_trylock_irqsave() always returns true, even if
+	 * we already hold the lock. So, in that case, we rely only on
+	 * reference counting.
+	 */
+	if (!IS_ENABLED(CONFIG_SMP) ||
+	    !spin_trylock_irqsave(&enable_lock, flags)) {
 		if (enable_owner == current) {
 			enable_refcnt++;
 			__acquire(enable_lock);
+			if (!IS_ENABLED(CONFIG_SMP))
+				local_save_flags(flags);
 			return flags;
 		}
 		spin_lock_irqsave(&enable_lock, flags);

drivers/clk/mediatek/Kconfig

@@ -1,136 +1,140 @@
 #
-# MediaTek SoC drivers
+# MediaTek Clock Drivers
 #
+menu "Clock driver for MediaTek SoC"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
+
 config COMMON_CLK_MEDIATEK
 	bool
+	select RESET_CONTROLLER
 	---help---
-	  Mediatek SoCs' clock support.
+	  MediaTek SoCs' clock support.
 
 config COMMON_CLK_MT2701
-	bool "Clock driver for Mediatek MT2701"
+	bool "Clock driver for MediaTek MT2701"
 	depends on (ARCH_MEDIATEK && ARM) || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK && ARM
 	---help---
-	  This driver supports Mediatek MT2701 basic clocks.
+	  This driver supports MediaTek MT2701 basic clocks.
 
 config COMMON_CLK_MT2701_MMSYS
-	bool "Clock driver for Mediatek MT2701 mmsys"
+	bool "Clock driver for MediaTek MT2701 mmsys"
 	depends on COMMON_CLK_MT2701
 	---help---
-	  This driver supports Mediatek MT2701 mmsys clocks.
+	  This driver supports MediaTek MT2701 mmsys clocks.
 
 config COMMON_CLK_MT2701_IMGSYS
-	bool "Clock driver for Mediatek MT2701 imgsys"
+	bool "Clock driver for MediaTek MT2701 imgsys"
 	depends on COMMON_CLK_MT2701
 	---help---
-	  This driver supports Mediatek MT2701 imgsys clocks.
+	  This driver supports MediaTek MT2701 imgsys clocks.
 
 config COMMON_CLK_MT2701_VDECSYS
-	bool "Clock driver for Mediatek MT2701 vdecsys"
+	bool "Clock driver for MediaTek MT2701 vdecsys"
 	depends on COMMON_CLK_MT2701
 	---help---
-	  This driver supports Mediatek MT2701 vdecsys clocks.
+	  This driver supports MediaTek MT2701 vdecsys clocks.
 
 config COMMON_CLK_MT2701_HIFSYS
-	bool "Clock driver for Mediatek MT2701 hifsys"
+	bool "Clock driver for MediaTek MT2701 hifsys"
 	depends on COMMON_CLK_MT2701
 	---help---
-	  This driver supports Mediatek MT2701 hifsys clocks.
+	  This driver supports MediaTek MT2701 hifsys clocks.
 
 config COMMON_CLK_MT2701_ETHSYS
-	bool "Clock driver for Mediatek MT2701 ethsys"
+	bool "Clock driver for MediaTek MT2701 ethsys"
 	depends on COMMON_CLK_MT2701
 	---help---
-	  This driver supports Mediatek MT2701 ethsys clocks.
+	  This driver supports MediaTek MT2701 ethsys clocks.
 
 config COMMON_CLK_MT2701_BDPSYS
-	bool "Clock driver for Mediatek MT2701 bdpsys"
+	bool "Clock driver for MediaTek MT2701 bdpsys"
 	depends on COMMON_CLK_MT2701
 	---help---
-	  This driver supports Mediatek MT2701 bdpsys clocks.
+	  This driver supports MediaTek MT2701 bdpsys clocks.
 
 config COMMON_CLK_MT2712
-	bool "Clock driver for Mediatek MT2712"
+	bool "Clock driver for MediaTek MT2712"
 	depends on (ARCH_MEDIATEK && ARM64) || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK && ARM64
 	---help---
-	  This driver supports Mediatek MT2712 basic clocks.
+	  This driver supports MediaTek MT2712 basic clocks.
 
 config COMMON_CLK_MT2712_BDPSYS
-	bool "Clock driver for Mediatek MT2712 bdpsys"
+	bool "Clock driver for MediaTek MT2712 bdpsys"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 bdpsys clocks.
+	  This driver supports MediaTek MT2712 bdpsys clocks.
 
 config COMMON_CLK_MT2712_IMGSYS
-	bool "Clock driver for Mediatek MT2712 imgsys"
+	bool "Clock driver for MediaTek MT2712 imgsys"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 imgsys clocks.
+	  This driver supports MediaTek MT2712 imgsys clocks.
 
 config COMMON_CLK_MT2712_JPGDECSYS
-	bool "Clock driver for Mediatek MT2712 jpgdecsys"
+	bool "Clock driver for MediaTek MT2712 jpgdecsys"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 jpgdecsys clocks.
+	  This driver supports MediaTek MT2712 jpgdecsys clocks.
 
 config COMMON_CLK_MT2712_MFGCFG
-	bool "Clock driver for Mediatek MT2712 mfgcfg"
+	bool "Clock driver for MediaTek MT2712 mfgcfg"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 mfgcfg clocks.
+	  This driver supports MediaTek MT2712 mfgcfg clocks.
 
 config COMMON_CLK_MT2712_MMSYS
-	bool "Clock driver for Mediatek MT2712 mmsys"
+	bool "Clock driver for MediaTek MT2712 mmsys"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 mmsys clocks.
+	  This driver supports MediaTek MT2712 mmsys clocks.
 
 config COMMON_CLK_MT2712_VDECSYS
-	bool "Clock driver for Mediatek MT2712 vdecsys"
+	bool "Clock driver for MediaTek MT2712 vdecsys"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 vdecsys clocks.
+	  This driver supports MediaTek MT2712 vdecsys clocks.
 
 config COMMON_CLK_MT2712_VENCSYS
-	bool "Clock driver for Mediatek MT2712 vencsys"
+	bool "Clock driver for MediaTek MT2712 vencsys"
 	depends on COMMON_CLK_MT2712
 	---help---
-	  This driver supports Mediatek MT2712 vencsys clocks.
+	  This driver supports MediaTek MT2712 vencsys clocks.
 
 config COMMON_CLK_MT6797
-       bool "Clock driver for Mediatek MT6797"
+       bool "Clock driver for MediaTek MT6797"
        depends on (ARCH_MEDIATEK && ARM64) || COMPILE_TEST
        select COMMON_CLK_MEDIATEK
        default ARCH_MEDIATEK && ARM64
        ---help---
-         This driver supports Mediatek MT6797 basic clocks.
+         This driver supports MediaTek MT6797 basic clocks.
 
 config COMMON_CLK_MT6797_MMSYS
-       bool "Clock driver for Mediatek MT6797 mmsys"
+       bool "Clock driver for MediaTek MT6797 mmsys"
        depends on COMMON_CLK_MT6797
        ---help---
-         This driver supports Mediatek MT6797 mmsys clocks.
+         This driver supports MediaTek MT6797 mmsys clocks.
 
 config COMMON_CLK_MT6797_IMGSYS
-       bool "Clock driver for Mediatek MT6797 imgsys"
+       bool "Clock driver for MediaTek MT6797 imgsys"
        depends on COMMON_CLK_MT6797
        ---help---
-         This driver supports Mediatek MT6797 imgsys clocks.
+         This driver supports MediaTek MT6797 imgsys clocks.
 
 config COMMON_CLK_MT6797_VDECSYS
-       bool "Clock driver for Mediatek MT6797 vdecsys"
+       bool "Clock driver for MediaTek MT6797 vdecsys"
        depends on COMMON_CLK_MT6797
        ---help---
-         This driver supports Mediatek MT6797 vdecsys clocks.
+         This driver supports MediaTek MT6797 vdecsys clocks.
 
 config COMMON_CLK_MT6797_VENCSYS
-       bool "Clock driver for Mediatek MT6797 vencsys"
+       bool "Clock driver for MediaTek MT6797 vencsys"
        depends on COMMON_CLK_MT6797
        ---help---
-         This driver supports Mediatek MT6797 vencsys clocks.
+         This driver supports MediaTek MT6797 vencsys clocks.
 
 config COMMON_CLK_MT7622
 	bool "Clock driver for MediaTek MT7622"
@@ -163,17 +167,18 @@ config COMMON_CLK_MT7622_AUDSYS
 	  to audio consumers such as I2S and TDM.
 
 config COMMON_CLK_MT8135
-	bool "Clock driver for Mediatek MT8135"
+	bool "Clock driver for MediaTek MT8135"
 	depends on (ARCH_MEDIATEK && ARM) || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK && ARM
 	---help---
-	  This driver supports Mediatek MT8135 clocks.
+	  This driver supports MediaTek MT8135 clocks.
 
 config COMMON_CLK_MT8173
-	bool "Clock driver for Mediatek MT8173"
+	bool "Clock driver for MediaTek MT8173"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK
 	---help---
-	  This driver supports Mediatek MT8173 clocks.
+	  This driver supports MediaTek MT8173 clocks.
+endmenu

drivers/clk/mediatek/Makefile

@@ -1,6 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_COMMON_CLK_MEDIATEK) += clk-mtk.o clk-pll.o clk-gate.o clk-apmixed.o clk-cpumux.o
-obj-$(CONFIG_RESET_CONTROLLER) += reset.o
+obj-$(CONFIG_COMMON_CLK_MEDIATEK) += clk-mtk.o clk-pll.o clk-gate.o clk-apmixed.o clk-cpumux.o reset.o
 obj-$(CONFIG_COMMON_CLK_MT6797) += clk-mt6797.o
 obj-$(CONFIG_COMMON_CLK_MT6797_IMGSYS) += clk-mt6797-img.o
 obj-$(CONFIG_COMMON_CLK_MT6797_MMSYS) += clk-mt6797-mm.o

drivers/clk/mediatek/clk-mtk.h

@@ -20,6 +20,7 @@
 #include <linux/clk-provider.h>
 
 struct clk;
+struct clk_onecell_data;
 
 #define MAX_MUX_GATE_BIT	31
 #define INVALID_MUX_GATE_BIT	(MAX_MUX_GATE_BIT + 1)
@@ -228,14 +229,7 @@ void mtk_clk_register_plls(struct device_node *node,
 struct clk *mtk_clk_register_ref2usb_tx(const char *name,
 			const char *parent_name, void __iomem *reg);
 
-#ifdef CONFIG_RESET_CONTROLLER
 void mtk_register_reset_controller(struct device_node *np,
 			unsigned int num_regs, int regofs);
-#else
-static inline void mtk_register_reset_controller(struct device_node *np,
-			unsigned int num_regs, int regofs)
-{
-}
-#endif
 
 #endif /* __DRV_CLK_MTK_H */

drivers/clk/sunxi-ng/ccu-sun50i-a64.c

@@ -400,28 +400,45 @@ static SUNXI_CCU_MP_WITH_MUX_GATE(nand_clk, "nand", mod0_default_parents, 0x080,
 				  BIT(31),	/* gate */
 				  0);
 
+/*
+ * MMC clocks are the new timing mode (see A83T & H3) variety, but without
+ * the mode switch. This means they have a 2x post divider between the clock
+ * and the MMC module. This is not documented in the manual, but is taken
+ * into consideration when setting the mmc module clocks in the BSP kernel.
+ * Without it, MMC performance is degraded.
+ *
+ * We model it here to be consistent with other SoCs supporting this mode.
+ * The alternative would be to add the 2x multiplier when setting the MMC
+ * module clock in the MMC driver, just for the A64.
+ */
 static const char * const mmc_default_parents[] = { "osc24M", "pll-periph0-2x",
 						    "pll-periph1-2x" };
-static SUNXI_CCU_MP_WITH_MUX_GATE(mmc0_clk, "mmc0", mmc_default_parents, 0x088,
-				  0, 4,		/* M */
-				  16, 2,	/* P */
-				  24, 2,	/* mux */
-				  BIT(31),	/* gate */
-				  0);
-
-static SUNXI_CCU_MP_WITH_MUX_GATE(mmc1_clk, "mmc1", mmc_default_parents, 0x08c,
-				  0, 4,		/* M */
-				  16, 2,	/* P */
-				  24, 2,	/* mux */
-				  BIT(31),	/* gate */
-				  0);
-
-static SUNXI_CCU_MP_WITH_MUX_GATE(mmc2_clk, "mmc2", mmc_default_parents, 0x090,
-				  0, 4,		/* M */
-				  16, 2,	/* P */
-				  24, 2,	/* mux */
-				  BIT(31),	/* gate */
-				  0);
+static SUNXI_CCU_MP_WITH_MUX_GATE_POSTDIV(mmc0_clk, "mmc0",
+					  mmc_default_parents, 0x088,
+					  0, 4,		/* M */
+					  16, 2,	/* P */
+					  24, 2,	/* mux */
+					  BIT(31),	/* gate */
+					  2,		/* post-div */
+					  0);
+
+static SUNXI_CCU_MP_WITH_MUX_GATE_POSTDIV(mmc1_clk, "mmc1",
+					  mmc_default_parents, 0x08c,
+					  0, 4,		/* M */
+					  16, 2,	/* P */
+					  24, 2,	/* mux */
+					  BIT(31),	/* gate */
+					  2,		/* post-div */
+					  0);
+
+static SUNXI_CCU_MP_WITH_MUX_GATE_POSTDIV(mmc2_clk, "mmc2",
+					  mmc_default_parents, 0x090,
+					  0, 4,		/* M */
+					  16, 2,	/* P */
+					  24, 2,	/* mux */
+					  BIT(31),	/* gate */
+					  2,		/* post-div */
+					  0);
 
 static const char * const ts_parents[] = { "osc24M", "pll-periph0", };
 static SUNXI_CCU_MP_WITH_MUX_GATE(ts_clk, "ts", ts_parents, 0x098,

drivers/clk/sunxi-ng/ccu-sun8i-a83t.c

@@ -76,15 +76,26 @@ static struct ccu_mult pll_c1cpux_clk = {
  */
 #define SUN8I_A83T_PLL_AUDIO_REG	0x008
 
+/* clock rates doubled for post divider */
+static struct ccu_sdm_setting pll_audio_sdm_table[] = {
+	{ .rate = 45158400, .pattern = 0xc00121ff, .m = 29, .n = 54 },
+	{ .rate = 49152000, .pattern = 0xc000e147, .m = 30, .n = 61 },
+};
+
 static struct ccu_nm pll_audio_clk = {
 	.enable		= BIT(31),
 	.lock		= BIT(2),
 	.n		= _SUNXI_CCU_MULT_OFFSET_MIN_MAX(8, 8, 0, 12, 0),
 	.m		= _SUNXI_CCU_DIV(0, 6),
+	.fixed_post_div	= 2,
+	.sdm		= _SUNXI_CCU_SDM(pll_audio_sdm_table, BIT(24),
+					 0x284, BIT(31)),
 	.common		= {
 		.reg		= SUN8I_A83T_PLL_AUDIO_REG,
 		.lock_reg	= CCU_SUN8I_A83T_LOCK_REG,
-		.features	= CCU_FEATURE_LOCK_REG,
+		.features	= CCU_FEATURE_LOCK_REG |
+				  CCU_FEATURE_FIXED_POSTDIV |
+				  CCU_FEATURE_SIGMA_DELTA_MOD,
 		.hw.init	= CLK_HW_INIT("pll-audio", "osc24M",
 					      &ccu_nm_ops, CLK_SET_RATE_UNGATE),
 	},
@@ -493,8 +504,8 @@ static SUNXI_CCU_MUX_WITH_GATE(tcon0_clk, "tcon0", tcon0_parents,
 				 0x118, 24, 3, BIT(31), CLK_SET_RATE_PARENT);
 
 static const char * const tcon1_parents[] = { "pll-video1" };
-static SUNXI_CCU_MUX_WITH_GATE(tcon1_clk, "tcon1", tcon1_parents,
-				 0x11c, 24, 3, BIT(31), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M_WITH_MUX_GATE(tcon1_clk, "tcon1", tcon1_parents,
+				 0x11c, 0, 4, 24, 2, BIT(31), CLK_SET_RATE_PARENT);
 
 static SUNXI_CCU_GATE(csi_misc_clk, "csi-misc", "osc24M", 0x130, BIT(16), 0);
 
@@ -889,9 +900,10 @@ static int sun8i_a83t_ccu_probe(struct platform_device *pdev)
 	if (IS_ERR(reg))
 		return PTR_ERR(reg);
 
-	/* Enforce d1 = 0, d2 = 0 for Audio PLL */
+	/* Enforce d1 = 0, d2 = 1 for Audio PLL */
 	val = readl(reg + SUN8I_A83T_PLL_AUDIO_REG);
-	val &= ~(BIT(16) | BIT(18));
+	val &= ~BIT(16);
+	val |= BIT(18);
 	writel(val, reg + SUN8I_A83T_PLL_AUDIO_REG);
 
 	/* Enforce P = 1 for both CPU cluster PLLs */

drivers/clk/sunxi-ng/ccu-sun8i-de2.c

@@ -41,6 +41,8 @@ static SUNXI_CCU_GATE(wb_clk,		"wb",		"wb-div",
 
 static SUNXI_CCU_M(mixer0_div_clk, "mixer0-div", "de", 0x0c, 0, 4,
 		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(mixer1_div_clk, "mixer1-div", "de", 0x0c, 4, 4,
+		   CLK_SET_RATE_PARENT);
 static SUNXI_CCU_M(wb_div_clk, "wb-div", "de", 0x0c, 8, 4,
 		   CLK_SET_RATE_PARENT);
 
@@ -65,6 +67,20 @@ static struct ccu_common *sun8i_a83t_de2_clks[] = {
 	&wb_div_a83_clk.common,
 };
 
+static struct ccu_common *sun8i_h3_de2_clks[] = {
+	&mixer0_clk.common,
+	&mixer1_clk.common,
+	&wb_clk.common,
+
+	&bus_mixer0_clk.common,
+	&bus_mixer1_clk.common,
+	&bus_wb_clk.common,
+
+	&mixer0_div_clk.common,
+	&mixer1_div_clk.common,
+	&wb_div_clk.common,
+};
+
 static struct ccu_common *sun8i_v3s_de2_clks[] = {
 	&mixer0_clk.common,
 	&wb_clk.common,
@@ -93,6 +109,23 @@ static struct clk_hw_onecell_data sun8i_a83t_de2_hw_clks = {
 	.num	= CLK_NUMBER,
 };
 
+static struct clk_hw_onecell_data sun8i_h3_de2_hw_clks = {
+	.hws	= {
+		[CLK_MIXER0]		= &mixer0_clk.common.hw,
+		[CLK_MIXER1]		= &mixer1_clk.common.hw,
+		[CLK_WB]		= &wb_clk.common.hw,
+
+		[CLK_BUS_MIXER0]	= &bus_mixer0_clk.common.hw,
+		[CLK_BUS_MIXER1]	= &bus_mixer1_clk.common.hw,
+		[CLK_BUS_WB]		= &bus_wb_clk.common.hw,
+
+		[CLK_MIXER0_DIV]	= &mixer0_div_clk.common.hw,
+		[CLK_MIXER1_DIV]	= &mixer1_div_clk.common.hw,
+		[CLK_WB_DIV]		= &wb_div_clk.common.hw,
+	},
+	.num	= CLK_NUMBER,
+};
+
 static struct clk_hw_onecell_data sun8i_v3s_de2_hw_clks = {
 	.hws	= {
 		[CLK_MIXER0]		= &mixer0_clk.common.hw,
@@ -133,11 +166,21 @@ static const struct sunxi_ccu_desc sun8i_a83t_de2_clk_desc = {
 	.num_resets	= ARRAY_SIZE(sun8i_a83t_de2_resets),
 };
 
+static const struct sunxi_ccu_desc sun8i_h3_de2_clk_desc = {
+	.ccu_clks	= sun8i_h3_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sun8i_h3_de2_clks),
+
+	.hw_clks	= &sun8i_h3_de2_hw_clks,
+
+	.resets		= sun8i_a83t_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun8i_a83t_de2_resets),
+};
+
 static const struct sunxi_ccu_desc sun50i_a64_de2_clk_desc = {
-	.ccu_clks	= sun8i_a83t_de2_clks,
-	.num_ccu_clks	= ARRAY_SIZE(sun8i_a83t_de2_clks),
+	.ccu_clks	= sun8i_h3_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sun8i_h3_de2_clks),
 
-	.hw_clks	= &sun8i_a83t_de2_hw_clks,
+	.hw_clks	= &sun8i_h3_de2_hw_clks,
 
 	.resets		= sun50i_a64_de2_resets,
 	.num_resets	= ARRAY_SIZE(sun50i_a64_de2_resets),
@@ -237,6 +280,10 @@ static const struct of_device_id sunxi_de2_clk_ids[] = {
 		.compatible = "allwinner,sun8i-a83t-de2-clk",
 		.data = &sun8i_a83t_de2_clk_desc,
 	},
+	{
+		.compatible = "allwinner,sun8i-h3-de2-clk",
+		.data = &sun8i_h3_de2_clk_desc,
+	},
 	{
 		.compatible = "allwinner,sun8i-v3s-de2-clk",
 		.data = &sun8i_v3s_de2_clk_desc,

drivers/clk/sunxi-ng/ccu_mp.c

@@ -50,12 +50,19 @@ static unsigned long ccu_mp_round_rate(struct ccu_mux_internal *mux,
 	unsigned int max_m, max_p;
 	unsigned int m, p;
 
+	if (cmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate *= cmp->fixed_post_div;
+
 	max_m = cmp->m.max ?: 1 << cmp->m.width;
 	max_p = cmp->p.max ?: 1 << ((1 << cmp->p.width) - 1);
 
 	ccu_mp_find_best(*parent_rate, rate, max_m, max_p, &m, &p);
+	rate = *parent_rate / p / m;
+
+	if (cmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate /= cmp->fixed_post_div;
 
-	return *parent_rate / p / m;
+	return rate;
 }
 
 static void ccu_mp_disable(struct clk_hw *hw)
@@ -83,6 +90,7 @@ static unsigned long ccu_mp_recalc_rate(struct clk_hw *hw,
 					unsigned long parent_rate)
 {
 	struct ccu_mp *cmp = hw_to_ccu_mp(hw);
+	unsigned long rate;
 	unsigned int m, p;
 	u32 reg;
 
@@ -101,7 +109,11 @@ static unsigned long ccu_mp_recalc_rate(struct clk_hw *hw,
 	p = reg >> cmp->p.shift;
 	p &= (1 << cmp->p.width) - 1;
 
-	return (parent_rate >> p) / m;
+	rate = (parent_rate >> p) / m;
+	if (cmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate /= cmp->fixed_post_div;
+
+	return rate;
 }
 
 static int ccu_mp_determine_rate(struct clk_hw *hw,
@@ -129,6 +141,10 @@ static int ccu_mp_set_rate(struct clk_hw *hw, unsigned long rate,
 	max_m = cmp->m.max ?: 1 << cmp->m.width;
 	max_p = cmp->p.max ?: 1 << ((1 << cmp->p.width) - 1);
 
+	/* Adjust target rate according to post-dividers */
+	if (cmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate = rate * cmp->fixed_post_div;
+
 	ccu_mp_find_best(parent_rate, rate, max_m, max_p, &m, &p);
 
 	spin_lock_irqsave(cmp->common.lock, flags);

drivers/clk/sunxi-ng/ccu_mp.h

@@ -33,9 +33,33 @@ struct ccu_mp {
 	struct ccu_div_internal		m;
 	struct ccu_div_internal		p;
 	struct ccu_mux_internal	mux;
+
+	unsigned int		fixed_post_div;
+
 	struct ccu_common	common;
 };
 
+#define SUNXI_CCU_MP_WITH_MUX_GATE_POSTDIV(_struct, _name, _parents, _reg, \
+					   _mshift, _mwidth,		\
+					   _pshift, _pwidth,		\
+					   _muxshift, _muxwidth,	\
+					   _gate, _postdiv, _flags)	\
+	struct ccu_mp _struct = {					\
+		.enable	= _gate,					\
+		.m	= _SUNXI_CCU_DIV(_mshift, _mwidth),		\
+		.p	= _SUNXI_CCU_DIV(_pshift, _pwidth),		\
+		.mux	= _SUNXI_CCU_MUX(_muxshift, _muxwidth),		\
+		.fixed_post_div	= _postdiv,				\
+		.common	= {						\
+			.reg		= _reg,				\
+			.features	= CCU_FEATURE_FIXED_POSTDIV,	\
+			.hw.init	= CLK_HW_INIT_PARENTS(_name,	\
+							      _parents, \
+							      &ccu_mp_ops, \
+							      _flags),	\
+		}							\
+	}
+
 #define SUNXI_CCU_MP_WITH_MUX_GATE(_struct, _name, _parents, _reg,	\
 				   _mshift, _mwidth,			\
 				   _pshift, _pwidth,			\

drivers/clk/sunxi-ng/ccu_nm.c

@@ -70,11 +70,18 @@ static unsigned long ccu_nm_recalc_rate(struct clk_hw *hw,
 					unsigned long parent_rate)
 {
 	struct ccu_nm *nm = hw_to_ccu_nm(hw);
+	unsigned long rate;
 	unsigned long n, m;
 	u32 reg;
 
-	if (ccu_frac_helper_is_enabled(&nm->common, &nm->frac))
-		return ccu_frac_helper_read_rate(&nm->common, &nm->frac);
+	if (ccu_frac_helper_is_enabled(&nm->common, &nm->frac)) {
+		rate = ccu_frac_helper_read_rate(&nm->common, &nm->frac);
+
+		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+			rate /= nm->fixed_post_div;
+
+		return rate;
+	}
 
 	reg = readl(nm->common.base + nm->common.reg);
 
@@ -90,15 +97,15 @@ static unsigned long ccu_nm_recalc_rate(struct clk_hw *hw,
 	if (!m)
 		m++;
 
-	if (ccu_sdm_helper_is_enabled(&nm->common, &nm->sdm)) {
-		unsigned long rate =
-			ccu_sdm_helper_read_rate(&nm->common, &nm->sdm,
-						 m, n);
-		if (rate)
-			return rate;
-	}
+	if (ccu_sdm_helper_is_enabled(&nm->common, &nm->sdm))
+		rate = ccu_sdm_helper_read_rate(&nm->common, &nm->sdm, m, n);
+	else
+		rate = parent_rate * n / m;
+
+	if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate /= nm->fixed_post_div;
 
-	return parent_rate * n / m;
+	return rate;
 }
 
 static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
@@ -107,11 +114,20 @@ static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
 	struct ccu_nm *nm = hw_to_ccu_nm(hw);
 	struct _ccu_nm _nm;
 
-	if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, rate))
+	if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate *= nm->fixed_post_div;
+
+	if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, rate)) {
+		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+			rate /= nm->fixed_post_div;
 		return rate;
+	}
 
-	if (ccu_sdm_helper_has_rate(&nm->common, &nm->sdm, rate))
+	if (ccu_sdm_helper_has_rate(&nm->common, &nm->sdm, rate)) {
+		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+			rate /= nm->fixed_post_div;
 		return rate;
+	}
 
 	_nm.min_n = nm->n.min ?: 1;
 	_nm.max_n = nm->n.max ?: 1 << nm->n.width;
@@ -119,8 +135,12 @@ static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
 	_nm.max_m = nm->m.max ?: 1 << nm->m.width;
 
 	ccu_nm_find_best(*parent_rate, rate, &_nm);
+	rate = *parent_rate * _nm.n / _nm.m;
+
+	if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate /= nm->fixed_post_div;
 
-	return *parent_rate * _nm.n / _nm.m;
+	return rate;
 }
 
 static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -131,6 +151,10 @@ static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate,
 	unsigned long flags;
 	u32 reg;
 
+	/* Adjust target rate according to post-dividers */
+	if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
+		rate = rate * nm->fixed_post_div;
+
 	if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, rate)) {
 		spin_lock_irqsave(nm->common.lock, flags);
 

drivers/clk/sunxi-ng/ccu_nm.h

@@ -36,6 +36,8 @@ struct ccu_nm {
 	struct ccu_frac_internal	frac;
 	struct ccu_sdm_internal		sdm;
 
+	unsigned int		fixed_post_div;
+
 	struct ccu_common	common;
 };
 

drivers/clk/sunxi/clk-sun8i-apb0.c

@@ -98,10 +98,7 @@ static int sun8i_a23_apb0_clk_probe(struct platform_device *pdev)
 		return PTR_ERR(reg);
 
 	clk = sun8i_a23_apb0_register(np, reg);
-	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(clk);
 }
 
 static const struct of_device_id sun8i_a23_apb0_clk_dt_ids[] = {

include/dt-bindings/clock/aspeed-clock.h

@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+
+#ifndef DT_BINDINGS_ASPEED_CLOCK_H
+#define DT_BINDINGS_ASPEED_CLOCK_H
+
+#define ASPEED_CLK_GATE_ECLK		0
+#define ASPEED_CLK_GATE_GCLK		1
+#define ASPEED_CLK_GATE_MCLK		2
+#define ASPEED_CLK_GATE_VCLK		3
+#define ASPEED_CLK_GATE_BCLK		4
+#define ASPEED_CLK_GATE_DCLK		5
+#define ASPEED_CLK_GATE_REFCLK		6
+#define ASPEED_CLK_GATE_USBPORT2CLK	7
+#define ASPEED_CLK_GATE_LCLK		8
+#define ASPEED_CLK_GATE_USBUHCICLK	9
+#define ASPEED_CLK_GATE_D1CLK		10
+#define ASPEED_CLK_GATE_YCLK		11
+#define ASPEED_CLK_GATE_USBPORT1CLK	12
+#define ASPEED_CLK_GATE_UART1CLK	13
+#define ASPEED_CLK_GATE_UART2CLK	14
+#define ASPEED_CLK_GATE_UART5CLK	15
+#define ASPEED_CLK_GATE_ESPICLK		16
+#define ASPEED_CLK_GATE_MAC1CLK		17
+#define ASPEED_CLK_GATE_MAC2CLK		18
+#define ASPEED_CLK_GATE_RSACLK		19
+#define ASPEED_CLK_GATE_UART3CLK	20
+#define ASPEED_CLK_GATE_UART4CLK	21
+#define ASPEED_CLK_GATE_SDCLKCLK	22
+#define ASPEED_CLK_GATE_LHCCLK		23
+#define ASPEED_CLK_HPLL			24
+#define ASPEED_CLK_AHB			25
+#define ASPEED_CLK_APB			26
+#define ASPEED_CLK_UART			27
+#define ASPEED_CLK_SDIO			28
+#define ASPEED_CLK_ECLK			29
+#define ASPEED_CLK_ECLK_MUX		30
+#define ASPEED_CLK_LHCLK		31
+#define ASPEED_CLK_MAC			32
+#define ASPEED_CLK_BCLK			33
+#define ASPEED_CLK_MPLL			34
+
+#define ASPEED_RESET_XDMA		0
+#define ASPEED_RESET_MCTP		1
+#define ASPEED_RESET_ADC		2
+#define ASPEED_RESET_JTAG_MASTER	3
+#define ASPEED_RESET_MIC		4
+#define ASPEED_RESET_PWM		5
+#define ASPEED_RESET_PCIVGA		6
+#define ASPEED_RESET_I2C		7
+#define ASPEED_RESET_AHB		8
+
+#endif