ARM: tegra: document reset properties in DT bindings

Update all the Tegra DT bindings to require resets/reset-names properties
where the HW module has reset inputs. Remove any entries from clocks or
clock-names that were only required to identify reset inputs, rather than
referring to real clocks.

This is a DT-ABI-incompatible change. It is the first of two changes
required for me to consider the Tegra DT bindings as stable, the other
being conversion to the common DMA DT bindings.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>

Documentation/devicetree/bindings/clock/nvidia,tegra114-car.txt

@@ -15,6 +15,9 @@ Required properties :
   In clock consumers, this cell represents the clock ID exposed by the
   CAR. The assignments may be found in header file
   <dt-bindings/clock/tegra114-car.h>.
+- #reset-cells : Should be 1.
+  In clock consumers, this cell represents the bit number in the CAR's
+  array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
 
 Example SoC include file:
 
@@ -23,6 +26,7 @@ Example SoC include file:
 		compatible = "nvidia,tegra114-car";
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
+		#reset-cells = <1>;
 	};
 
 	usb@c5004000 {

Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt

@@ -15,6 +15,9 @@ Required properties :
   In clock consumers, this cell represents the clock ID exposed by the
   CAR. The assignments may be found in header file
   <dt-bindings/clock/tegra124-car.h>.
+- #reset-cells : Should be 1.
+  In clock consumers, this cell represents the bit number in the CAR's
+  array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
 
 Example SoC include file:
 
@@ -23,6 +26,7 @@ Example SoC include file:
 		compatible = "nvidia,tegra124-car";
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
+		#reset-cells = <1>;
 	};
 
 	usb@c5004000 {

Documentation/devicetree/bindings/clock/nvidia,tegra20-car.txt

@@ -15,6 +15,9 @@ Required properties :
   In clock consumers, this cell represents the clock ID exposed by the
   CAR. The assignments may be found in header file
   <dt-bindings/clock/tegra20-car.h>.
+- #reset-cells : Should be 1.
+  In clock consumers, this cell represents the bit number in the CAR's
+  array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
 
 Example SoC include file:
 
@@ -23,6 +26,7 @@ Example SoC include file:
 		compatible = "nvidia,tegra20-car";
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
+		#reset-cells = <1>;
 	};
 
 	usb@c5004000 {

Documentation/devicetree/bindings/clock/nvidia,tegra30-car.txt

@@ -15,6 +15,9 @@ Required properties :
   In clock consumers, this cell represents the clock ID exposed by the
   CAR. The assignments may be found in header file
   <dt-bindings/clock/tegra30-car.h>.
+- #reset-cells : Should be 1.
+  In clock consumers, this cell represents the bit number in the CAR's
+  array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
 
 Example SoC include file:
 
@@ -23,6 +26,7 @@ Example SoC include file:
 		compatible = "nvidia,tegra30-car";
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
+		#reset-cells = <1>;
 	};
 
 	usb@c5004000 {

Documentation/devicetree/bindings/dma/tegra20-apbdma.txt

@@ -7,6 +7,10 @@ Required properties:
 - interrupts: Should contain all of the per-channel DMA interrupts.
 - clocks: Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - dma
 
 Examples:
 
@@ -30,4 +34,6 @@ apbdma: dma@6000a000 {
 		       0 150 0x04
 		       0 151 0x04 >;
 	clocks = <&tegra_car 34>;
+	resets = <&tegra_car 34>;
+	reset-names = "dma";
 };

Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt

@@ -11,6 +11,10 @@ Required properties:
 - ranges: The mapping of the host1x address space to the CPU address space.
 - clocks: Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets: Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names: Must include the following entries:
+  - host1x
 
 The host1x top-level node defines a number of children, each representing one
 of the following host1x client modules:
@@ -23,6 +27,10 @@ of the following host1x client modules:
   - interrupts: The interrupt outputs from the controller.
   - clocks: Must contain one entry, for the module clock.
     See ../clocks/clock-bindings.txt for details.
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - mpe
 
 - vi: video input
 
@@ -32,6 +40,10 @@ of the following host1x client modules:
   - interrupts: The interrupt outputs from the controller.
   - clocks: Must contain one entry, for the module clock.
     See ../clocks/clock-bindings.txt for details.
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - vi
 
 - epp: encoder pre-processor
 
@@ -41,6 +53,10 @@ of the following host1x client modules:
   - interrupts: The interrupt outputs from the controller.
   - clocks: Must contain one entry, for the module clock.
     See ../clocks/clock-bindings.txt for details.
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - epp
 
 - isp: image signal processor
 
@@ -50,6 +66,10 @@ of the following host1x client modules:
   - interrupts: The interrupt outputs from the controller.
   - clocks: Must contain one entry, for the module clock.
     See ../clocks/clock-bindings.txt for details.
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - isp
 
 - gr2d: 2D graphics engine
 
@@ -59,6 +79,10 @@ of the following host1x client modules:
   - interrupts: The interrupt outputs from the controller.
   - clocks: Must contain one entry, for the module clock.
     See ../clocks/clock-bindings.txt for details.
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - 2d
 
 - gr3d: 3D graphics engine
 
@@ -72,6 +96,11 @@ of the following host1x client modules:
     - 3d
       This MUST be the first entry.
     - 3d2 (Only required on SoCs with two 3D clocks)
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - 3d
+    - 3d2 (Only required on SoCs with two 3D clocks)
 
 - dc: display controller
 
@@ -85,6 +114,10 @@ of the following host1x client modules:
     - dc
       This MUST be the first entry.
     - parent
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - dc
 
   Each display controller node has a child node, named "rgb", that represents
   the RGB output associated with the controller. It can take the following
@@ -107,6 +140,10 @@ of the following host1x client modules:
     - hdmi
       This MUST be the first entry.
     - parent
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - hdmi
 
   Optional properties:
   - nvidia,ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
@@ -133,6 +170,10 @@ of the following host1x client modules:
     - dsi
       This MUST be the first entry.
     - parent
+  - resets: Must contain an entry for each entry in reset-names.
+    See ../reset/reset.txt for details.
+  - reset-names: Must include the following entries:
+    - dsi
 
 Example:
 
@@ -145,6 +186,8 @@ Example:
 		interrupts = <0 65 0x04   /* mpcore syncpt */
 			      0 67 0x04>; /* mpcore general */
 		clocks = <&tegra_car TEGRA20_CLK_HOST1X>;
+		resets = <&tegra_car 28>;
+		reset-names = "host1x";
 
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -156,6 +199,8 @@ Example:
 			reg = <0x54040000 0x00040000>;
 			interrupts = <0 68 0x04>;
 			clocks = <&tegra_car TEGRA20_CLK_MPE>;
+			resets = <&tegra_car 60>;
+			reset-names = "mpe";
 		};
 
 		vi {
@@ -163,6 +208,8 @@ Example:
 			reg = <0x54080000 0x00040000>;
 			interrupts = <0 69 0x04>;
 			clocks = <&tegra_car TEGRA20_CLK_VI>;
+			resets = <&tegra_car 100>;
+			reset-names = "vi";
 		};
 
 		epp {
@@ -170,6 +217,8 @@ Example:
 			reg = <0x540c0000 0x00040000>;
 			interrupts = <0 70 0x04>;
 			clocks = <&tegra_car TEGRA20_CLK_EPP>;
+			resets = <&tegra_car 19>;
+			reset-names = "epp";
 		};
 
 		isp {
@@ -177,6 +226,8 @@ Example:
 			reg = <0x54100000 0x00040000>;
 			interrupts = <0 71 0x04>;
 			clocks = <&tegra_car TEGRA20_CLK_ISP>;
+			resets = <&tegra_car 23>;
+			reset-names = "isp";
 		};
 
 		gr2d {
@@ -184,12 +235,16 @@ Example:
 			reg = <0x54140000 0x00040000>;
 			interrupts = <0 72 0x04>;
 			clocks = <&tegra_car TEGRA20_CLK_GR2D>;
+			resets = <&tegra_car 21>;
+			reset-names = "2d";
 		};
 
 		gr3d {
 			compatible = "nvidia,tegra20-gr3d";
 			reg = <0x54180000 0x00040000>;
 			clocks = <&tegra_car TEGRA20_CLK_GR3D>;
+			resets = <&tegra_car 24>;
+			reset-names = "3d";
 		};
 
 		dc@54200000 {
@@ -199,6 +254,8 @@ Example:
 			clocks = <&tegra_car TEGRA20_CLK_DISP1>,
 				 <&tegra_car TEGRA20_CLK_PLL_P>;
 			clock-names = "disp1", "parent";
+			resets = <&tegra_car 27>;
+			reset-names = "dc";
 
 			rgb {
 				status = "disabled";
@@ -212,6 +269,8 @@ Example:
 			clocks = <&tegra_car TEGRA20_CLK_DISP2>,
 				 <&tegra_car TEGRA20_CLK_PLL_P>;
 			clock-names = "disp2", "parent";
+			resets = <&tegra_car 26>;
+			reset-names = "dc";
 
 			rgb {
 				status = "disabled";
@@ -225,6 +284,8 @@ Example:
 			clocks = <&tegra_car TEGRA20_CLK_HDMI>,
 				 <&tegra_car TEGRA20_CLK_PLL_D_OUT0>;
 			clock-names = "hdmi", "parent";
+			resets = <&tegra_car 51>;
+			reset-names = "hdmi";
 			status = "disabled";
 		};
 
@@ -242,6 +303,8 @@ Example:
 			clocks = <&tegra_car TEGRA20_CLK_DSI>,
 				 <&tegra_car TEGRA20_CLK_PLL_D_OUT0>;
 			clock-names = "dsi", "parent";
+			resets = <&tegra_car 48>;
+			reset-names = "dsi";
 			status = "disabled";
 		};
 	};

Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt

@@ -47,6 +47,10 @@ Required properties:
   - fast-clk
   Tegra114:
   - div-clk
+- resets: Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names: Must include the following entries:
+  - i2c
 
 Example:
 
@@ -58,5 +62,7 @@ Example:
 		#size-cells = <0>;
 		clocks = <&tegra_car 12>, <&tegra_car 124>;
 		clock-names = "div-clk", "fast-clk";
+		resets = <&tegra_car 12>;
+		reset-names = "i2c";
 		status = "disabled";
 	};

Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt

@@ -15,6 +15,10 @@ Required properties:
   devicetree/bindings/input/matrix-keymap.txt.
 - clocks: Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets: Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names: Must include the following entries:
+  - kbc
 
 Optional properties, in addition to those specified by the shared
 matrix-keyboard bindings:
@@ -34,6 +38,8 @@ keyboard: keyboard {
 	reg = <0x7000e200 0x100>;
 	interrupts = <0 85 0x04>;
 	clocks = <&tegra_car 36>;
+	resets = <&tegra_car 36>;
+	reset-names = "kbc";
 	nvidia,ghost-filter;
 	nvidia,debounce-delay-ms = <640>;
 	nvidia,kbc-row-pins = <0 1 2>;    /* pin 0, 1, 2 as rows */

Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt

@@ -10,6 +10,10 @@ Required properties:
 - compatible : Should be "nvidia,<chip>-sdhci"
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - sdhci
 
 Optional properties:
 - power-gpios : Specify GPIOs for power control
@@ -21,6 +25,8 @@ sdhci@c8000200 {
 	reg = <0xc8000200 0x200>;
 	interrupts = <47>;
 	clocks = <&tegra_car 14>;
+	resets = <&tegra_car 14>;
+	reset-names = "sdhci";
 	cd-gpios = <&gpio 69 0>; /* gpio PI5 */
 	wp-gpios = <&gpio 57 0>; /* gpio PH1 */
 	power-gpios = <&gpio 155 0>; /* gpio PT3 */

Documentation/devicetree/bindings/nvec/nvidia,nvec.txt

@@ -15,3 +15,7 @@ Required properties:
   - fast-clk
   Tegra114:
   - div-clk
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - i2c

Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt

@@ -47,9 +47,14 @@ Required properties:
 - clock-names: Must include the following entries:
   - pex
   - afi
-  - pcie_xclk
   - pll_e
   - cml (not required for Tegra20)
+- resets: Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names: Must include the following entries:
+  - pex
+  - afi
+  - pcie_x
 
 Root ports are defined as subnodes of the PCIe controller node.
 
@@ -91,9 +96,10 @@ SoC DTSI:
 			  0x82000000 0 0xa0000000 0xa0000000 0 0x10000000   /* non-prefetchable memory */
 			  0xc2000000 0 0xb0000000 0xb0000000 0 0x10000000>; /* prefetchable memory */
 
-		clocks = <&tegra_car 70>, <&tegra_car 72>, <&tegra_car 74>,
-			 <&tegra_car 118>;
-		clock-names = "pex", "afi", "pcie_xclk", "pll_e";
+		clocks = <&tegra_car 70>, <&tegra_car 72>, <&tegra_car 118>;
+		clock-names = "pex", "afi", "pll_e";
+		resets = <&tegra_car 70>, <&tegra_car 72>, <&tegra_car 74>;
+		reset-names = "pex", "afi", "pcie_x";
 		status = "disabled";
 
 		pci@1,0 {

Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt

@@ -9,6 +9,10 @@ Required properties:
   the cells format.
 - clocks: Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets: Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names: Must include the following entries:
+  - pwm
 
 Example:
 
@@ -17,4 +21,6 @@ Example:
 		reg = <0x7000a000 0x100>;
 		#pwm-cells = <2>;
 		clocks = <&tegra_car 17>;
+		resets = <&tegra_car 17>;
+		reset-names = "pwm";
 	};

Documentation/devicetree/bindings/serial/nvidia,tegra20-hsuart.txt

@@ -8,6 +8,10 @@ Required properties:
   request selector for this UART controller.
 - clocks: Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - serial
 
 Optional properties:
 - nvidia,enable-modem-interrupt: Enable modem interrupts. Should be enable
@@ -23,5 +27,7 @@ serial@70006000 {
 	nvidia,dma-request-selector = <&apbdma 8>;
 	nvidia,enable-modem-interrupt;
 	clocks = <&tegra_car 6>;
+	resets = <&tegra_car 6>;
+	reset-names = "serial";
 	status = "disabled";
 };

Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt

@@ -6,6 +6,10 @@ Required properties:
 - interrupts : Should contain AC97 interrupt
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - ac97
 - nvidia,dma-request-selector : The Tegra DMA controller's phandle and
   request selector for the AC97 controller
 - nvidia,codec-reset-gpio : The Tegra GPIO controller's phandle and the number
@@ -23,4 +27,6 @@ ac97@70002000 {
 	nvidia,codec-reset-gpio = <&gpio 170 0>;
 	nvidia,codec-sync-gpio = <&gpio 120 0>;
 	clocks = <&tegra_car 3>;
+	resets = <&tegra_car 3>;
+	reset-names = "ac97";
 };

Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt

@@ -6,6 +6,10 @@ Required properties:
 - interrupts : Should contain I2S interrupt
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - i2s
 - nvidia,dma-request-selector : The Tegra DMA controller's phandle and
   request selector for this I2S controller
 
@@ -17,4 +21,6 @@ i2s@70002800 {
 	interrupts = < 45 >;
 	nvidia,dma-request-selector = < &apbdma 2 >;
 	clocks = <&tegra_car 11>;
+	resets = <&tegra_car 11>;
+	reset-names = "i2s";
 };

Documentation/devicetree/bindings/sound/nvidia,tegra30-ahub.txt

@@ -15,6 +15,11 @@ Required properties:
 - clocks : Must contain an entry for each entry in clock-names.
   See ../clocks/clock-bindings.txt for details.
 - clock-names : Must include the following entries:
+  - d_audio
+  - apbif
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
   Tegra30 and later:
   - d_audio
   - apbif
@@ -26,7 +31,7 @@ Required properties:
   - dam0
   - dam1
   - dam2
-  - spdif_in
+  - spdif
   Tegra114 and later additionally require:
   - amx
   - adx
@@ -48,13 +53,15 @@ ahub@70080000 {
 	reg = <0x70080000 0x200 0x70080200 0x100>;
 	interrupts = < 0 103 0x04 >;
 	nvidia,dma-request-selector = <&apbdma 1>;
-	clocks = <&tegra_car 106>, <&tegra_car 107>, <&tegra_car 30>,
+	clocks = <&tegra_car 106>, <&tegra_car 107>;
+	clock-names = "d_audio", "apbif";
+	resets = <&tegra_car 106>, <&tegra_car 107>, <&tegra_car 30>,
 		<&tegra_car 11>, <&tegra_car 18>, <&tegra_car 101>,
 		<&tegra_car 102>, <&tegra_car 108>, <&tegra_car 109>,
-		<&tegra_car 110>, <&tegra_car 162>;
-	clock-names = "d_audio", "apbif", "i2s0", "i2s1", "i2s2",
+		<&tegra_car 110>, <&tegra_car 10>;
+	reset-names = "d_audio", "apbif", "i2s0", "i2s1", "i2s2",
 		"i2s3", "i2s4", "dam0", "dam1", "dam2",
-		"spdif_in";
+		"spdif";
 	ranges;
 	#address-cells = <1>;
 	#size-cells = <1>;

Documentation/devicetree/bindings/sound/nvidia,tegra30-i2s.txt

@@ -5,6 +5,10 @@ Required properties:
 - reg : Should contain I2S registers location and length
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - i2s
 - nvidia,ahub-cif-ids : The list of AHUB CIF IDs for this port, rx (playback)
   first, tx (capture) second. See nvidia,tegra30-ahub.txt for values.
 
@@ -15,4 +19,6 @@ i2s@70080300 {
 	reg = <0x70080300 0x100>;
 	nvidia,ahub-cif-ids = <4 4>;
 	clocks = <&tegra_car 11>;
+	resets = <&tegra_car 11>;
+	reset-names = "i2s";
 };

Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt

@@ -10,6 +10,10 @@ Required properties:
   See ../clocks/clock-bindings.txt for details.
 - clock-names : Must include the following entries:
   - spi
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - spi
 
 Recommended properties:
 - spi-max-frequency: Definition as per
@@ -26,5 +30,7 @@ spi@7000d600 {
 	#size-cells = <0>;
 	clocks = <&tegra_car 44>;
 	clock-names = "spi";
+	resets = <&tegra_car 44>;
+	reset-names = "spi";
 	status = "disabled";
 };

Documentation/devicetree/bindings/spi/nvidia,tegra20-sflash.txt

@@ -8,6 +8,10 @@ Required properties:
   request selector for this SFLASH controller.
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - spi
 
 Recommended properties:
 - spi-max-frequency: Definition as per
@@ -24,5 +28,7 @@ spi@7000c380 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	clocks = <&tegra_car 43>;
+	resets = <&tegra_car 43>;
+	reset-names = "spi";
 	status = "disabled";
 };

Documentation/devicetree/bindings/spi/nvidia,tegra20-slink.txt

@@ -8,6 +8,10 @@ Required properties:
   request selector for this SLINK controller.
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+  See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+  - spi
 
 Recommended properties:
 - spi-max-frequency: Definition as per
@@ -24,5 +28,7 @@ spi@7000d600 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	clocks = <&tegra_car 44>;
+	resets = <&tegra_car 44>;
+	reset-names = "spi";
 	status = "disabled";
 };

Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt

@@ -10,6 +10,10 @@ Required properties :
  - nvidia,phy : phandle of the PHY that the controller is connected to.
  - clocks : Must contain one entry, for the module clock.
    See ../clocks/clock-bindings.txt for details.
+ - resets : Must contain an entry for each entry in reset-names.
+   See ../reset/reset.txt for details.
+ - reset-names : Must include the following entries:
+   - usb
 
 Optional properties:
  - nvidia,needs-double-reset : boolean is to be set for some of the Tegra20