Merge tag 'tegra-for-5.14-dt-bindings' of git://git.kernel.org/pub/sc…

…m/linux/kernel/git/tegra/linux into arm/dt

dt-bindings: Changes for v5.14-rc1

This contains a conversion of the Tegra clock and reset controller
device tree bindings to the new json-schema format and adds the core
power domain to the PMC device tree bindings.

* tag 'tegra-for-5.14-dt-bindings' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  dt-bindings: soc: tegra-pmc: Document core power domain
  dt-bindings: clock: tegra: Convert to schema

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Olof Johansson <[email protected]>

Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml

@@ -301,6 +301,33 @@ patternProperties:
 
     additionalProperties: false
 
+  core-domain:
+    type: object
+    description: |
+      The vast majority of hardware blocks of Tegra SoC belong to a
+      Core power domain, which has a dedicated voltage rail that powers
+      the blocks.
+
+    properties:
+      operating-points-v2:
+        description:
+          Should contain level, voltages and opp-supported-hw property.
+          The supported-hw is a bitfield indicating SoC speedo or process
+          ID mask.
+
+      "#power-domain-cells":
+        const: 0
+
+    required:
+      - operating-points-v2
+      - "#power-domain-cells"
+
+    additionalProperties: false
+
+  core-supply:
+    description:
+      Phandle to voltage regulator connected to the SoC Core power rail.
+
 required:
   - compatible
   - reg
@@ -325,6 +352,7 @@ examples:
     tegra_pmc: pmc@7000e400 {
               compatible = "nvidia,tegra210-pmc";
               reg = <0x7000e400 0x400>;
+              core-supply = <&regulator>;
               clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>;
               clock-names = "pclk", "clk32k_in";
               #clock-cells = <1>;
@@ -338,17 +366,24 @@ examples:
               nvidia,core-power-req-active-high;
               nvidia,sys-clock-req-active-high;
 
+              pd_core: core-domain {
+                      operating-points-v2 = <&core_opp_table>;
+                      #power-domain-cells = <0>;
+              };
+
               powergates {
                     pd_audio: aud {
                             clocks = <&tegra_car TEGRA210_CLK_APE>,
                                      <&tegra_car TEGRA210_CLK_APB2APE>;
                             resets = <&tegra_car 198>;
+                            power-domains = <&pd_core>;
                             #power-domain-cells = <0>;
                     };
 
                     pd_xusbss: xusba {
                             clocks = <&tegra_car TEGRA210_CLK_XUSB_SS>;
                             resets = <&tegra_car TEGRA210_CLK_XUSB_SS>;
+                            power-domains = <&pd_core>;
                             #power-domain-cells = <0>;
                     };
               };

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

@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/nvidia,tegra124-car.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Clock and Reset Controller
+
+maintainers:
+  - Jon Hunter <[email protected]>
+  - Thierry Reding <[email protected]>
+
+description: |
+  The Clock and Reset (CAR) is the HW module responsible for muxing and gating
+  Tegra's clocks, and setting their rates. It comprises CLKGEN and RSTGEN units.
+
+  CLKGEN provides the registers to program the PLLs. It controls most of
+  the clock source programming and most of the clock dividers.
+
+  CLKGEN input signals include the external clock for the reference frequency
+  (12 MHz, 26 MHz) and the external clock for the Real Time Clock (32.768 KHz).
+
+  Outputs from CLKGEN are inputs clock of the h/w blocks in the Tegra system.
+
+  RSTGEN provides the registers needed to control resetting of each block in
+  the Tegra system.
+
+properties:
+  compatible:
+    const: nvidia,tegra124-car
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  nvidia,external-memory-controller:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      phandle of the external memory controller node
+
+patternProperties:
+  "^emc-timings-[0-9]+$":
+    type: object
+    properties:
+      nvidia,ram-code:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          value of the RAM_CODE field in the PMC_STRAPPING_OPT_A register that
+          this timing set is used for
+
+    patternProperties:
+      "^timing-[0-9]+$":
+        type: object
+        properties:
+          clock-frequency:
+            description:
+              external memory clock rate in Hz
+            minimum: 1000000
+            maximum: 1000000000
+
+          nvidia,parent-clock-frequency:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description:
+              rate of parent clock in Hz
+            minimum: 1000000
+            maximum: 1000000000
+
+          clocks:
+            items:
+              - description: parent clock of EMC
+
+          clock-names:
+            items:
+              - const: emc-parent
+
+        required:
+          - clock-frequency
+          - nvidia,parent-clock-frequency
+          - clocks
+          - clock-names
+
+        additionalProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra124-car.h>
+
+    car: clock-controller@60006000 {
+        compatible = "nvidia,tegra124-car";
+        reg = <0x60006000 0x1000>;
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+    };
+
+    usb-controller@c5004000 {
+        compatible = "nvidia,tegra20-ehci";
+        reg = <0xc5004000 0x4000>;
+        clocks = <&car TEGRA124_CLK_USB2>;
+        resets = <&car TEGRA124_CLK_USB2>;
+    };