Merge tag 'v4.7-rockchip-clk4' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull rockchip clk updates from Heiko Stuebner:

Another small rk3399 fixup as well as simplifications around
our handling of the General-Register-Files syscon.

* tag 'v4.7-rockchip-clk4' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: drop old_rate calculation on pll rate changes
  clk: rockchip: simplify GRF handling in pll clocks
  clk: rockchip: lookup General Register Files in rockchip_clk_init
  clk: rockchip: fix the rk3399 sdmmc sample / drv name

drivers/clk/rockchip/clk-pll.c

@@ -92,15 +92,10 @@ static long rockchip_pll_round_rate(struct clk_hw *hw,
  */
 static int rockchip_pll_wait_lock(struct rockchip_clk_pll *pll)
 {
-	struct regmap *grf = rockchip_clk_get_grf(pll->ctx);
+	struct regmap *grf = pll->ctx->grf;
 	unsigned int val;
 	int delay = 24000000, ret;
 
-	if (IS_ERR(grf)) {
-		pr_err("%s: grf regmap not available\n", __func__);
-		return PTR_ERR(grf);
-	}
-
 	while (delay > 0) {
 		ret = regmap_read(grf, pll->lock_offset, &val);
 		if (ret) {
@@ -252,17 +247,9 @@ static int rockchip_rk3036_pll_set_rate(struct clk_hw *hw, unsigned long drate,
 {
 	struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
 	const struct rockchip_pll_rate_table *rate;
-	unsigned long old_rate = rockchip_rk3036_pll_recalc_rate(hw, prate);
-	struct regmap *grf = rockchip_clk_get_grf(pll->ctx);
-
-	if (IS_ERR(grf)) {
-		pr_debug("%s: grf regmap not available, aborting rate change\n",
-			 __func__);
-		return PTR_ERR(grf);
-	}
 
-	pr_debug("%s: changing %s from %lu to %lu with a parent rate of %lu\n",
-		 __func__, __clk_get_name(hw->clk), old_rate, drate, prate);
+	pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
+		 __func__, __clk_get_name(hw->clk), drate, prate);
 
 	/* Get required rate settings from table */
 	rate = rockchip_get_pll_settings(pll, drate);
@@ -491,17 +478,9 @@ static int rockchip_rk3066_pll_set_rate(struct clk_hw *hw, unsigned long drate,
 {
 	struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
 	const struct rockchip_pll_rate_table *rate;
-	unsigned long old_rate = rockchip_rk3066_pll_recalc_rate(hw, prate);
-	struct regmap *grf = rockchip_clk_get_grf(pll->ctx);
-
-	if (IS_ERR(grf)) {
-		pr_debug("%s: grf regmap not available, aborting rate change\n",
-			 __func__);
-		return PTR_ERR(grf);
-	}
 
-	pr_debug("%s: changing %s from %lu to %lu with a parent rate of %lu\n",
-		 __func__, clk_hw_get_name(hw), old_rate, drate, prate);
+	pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
+		 __func__, clk_hw_get_name(hw), drate, prate);
 
 	/* Get required rate settings from table */
 	rate = rockchip_get_pll_settings(pll, drate);
@@ -565,11 +544,6 @@ static void rockchip_rk3066_pll_init(struct clk_hw *hw)
 		 rate->no, cur.no, rate->nf, cur.nf, rate->nb, cur.nb);
 	if (rate->nr != cur.nr || rate->no != cur.no || rate->nf != cur.nf
 						     || rate->nb != cur.nb) {
-		struct regmap *grf = rockchip_clk_get_grf(pll->ctx);
-
-		if (IS_ERR(grf))
-			return;
-
 		pr_debug("%s: pll %s: rate params do not match rate table, adjusting\n",
 			 __func__, clk_hw_get_name(hw));
 		rockchip_rk3066_pll_set_params(pll, rate);
@@ -749,10 +723,9 @@ static int rockchip_rk3399_pll_set_rate(struct clk_hw *hw, unsigned long drate,
 {
 	struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
 	const struct rockchip_pll_rate_table *rate;
-	unsigned long old_rate = rockchip_rk3399_pll_recalc_rate(hw, prate);
 
-	pr_debug("%s: changing %s from %lu to %lu with a parent rate of %lu\n",
-		 __func__, __clk_get_name(hw->clk), old_rate, drate, prate);
+	pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
+		 __func__, __clk_get_name(hw->clk), drate, prate);
 
 	/* Get required rate settings from table */
 	rate = rockchip_get_pll_settings(pll, drate);
@@ -943,13 +916,13 @@ struct clk *rockchip_clk_register_pll(struct rockchip_clk_provider *ctx,
 
 	switch (pll_type) {
 	case pll_rk3036:
-		if (!pll->rate_table)
+		if (!pll->rate_table || IS_ERR(ctx->grf))
 			init.ops = &rockchip_rk3036_pll_clk_norate_ops;
 		else
 			init.ops = &rockchip_rk3036_pll_clk_ops;
 		break;
 	case pll_rk3066:
-		if (!pll->rate_table)
+		if (!pll->rate_table || IS_ERR(ctx->grf))
 			init.ops = &rockchip_rk3066_pll_clk_norate_ops;
 		else
 			init.ops = &rockchip_rk3066_pll_clk_ops;

drivers/clk/rockchip/clk-rk3399.c

@@ -894,8 +894,8 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
 			RK3399_CLKSEL_CON(16), 8, 3, MFLAGS, 0, 7, DFLAGS,
 			RK3399_CLKGATE_CON(6), 1, GFLAGS),
 
-	MMC(SCLK_SDMMC_DRV,     "emmc_drv",    "clk_sdmmc", RK3399_SDMMC_CON0, 1),
-	MMC(SCLK_SDMMC_SAMPLE,  "emmc_sample", "clk_sdmmc", RK3399_SDMMC_CON1, 1),
+	MMC(SCLK_SDMMC_DRV,     "sdmmc_drv",    "clk_sdmmc", RK3399_SDMMC_CON0, 1),
+	MMC(SCLK_SDMMC_SAMPLE,  "sdmmc_sample", "clk_sdmmc", RK3399_SDMMC_CON1, 1),
 
 	MMC(SCLK_SDIO_DRV,      "sdio_drv",    "clk_sdio",  RK3399_SDIO_CON0,  1),
 	MMC(SCLK_SDIO_SAMPLE,   "sdio_sample", "clk_sdio",  RK3399_SDIO_CON1,  1),

drivers/clk/rockchip/clk.c

@@ -347,6 +347,9 @@ struct rockchip_clk_provider * __init rockchip_clk_init(struct device_node *np,
 	ctx->grf = ERR_PTR(-EPROBE_DEFER);
 	spin_lock_init(&ctx->lock);
 
+	ctx->grf = syscon_regmap_lookup_by_phandle(ctx->cru_node,
+						   "rockchip,grf");
+
 	return ctx;
 
 err_free:
@@ -362,14 +365,6 @@ void __init rockchip_clk_of_add_provider(struct device_node *np,
 		pr_err("%s: could not register clk provider\n", __func__);
 }
 
-struct regmap *rockchip_clk_get_grf(struct rockchip_clk_provider *ctx)
-{
-	if (IS_ERR(ctx->grf))
-		ctx->grf = syscon_regmap_lookup_by_phandle(ctx->cru_node,
-							   "rockchip,grf");
-	return ctx->grf;
-}
-
 void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
 			     struct clk *clk, unsigned int id)
 {

drivers/clk/rockchip/clk.h

@@ -600,7 +600,6 @@ struct rockchip_clk_provider *rockchip_clk_init(struct device_node *np,
 			void __iomem *base, unsigned long nr_clks);
 void rockchip_clk_of_add_provider(struct device_node *np,
 				struct rockchip_clk_provider *ctx);
-struct regmap *rockchip_clk_get_grf(struct rockchip_clk_provider *ctx);
 void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
 			     struct clk *clk, unsigned int id);
 void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,