[PATCH v3 02/15] dt-bindings: tegra: Convert Tegra PMC bindings to YAML

[Sowjanya Komatineni <skomatineni@nvidia.com>]

This patch adds YAML schema for Tegra PMC bindings.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 .../bindings/arm/tegra/nvidia,tegra20-pmc.yaml     | 291 +++++++++++++++++++++
 1 file changed, 291 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml

diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml
new file mode 100644
index 000000000000..ab614f1be177
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml
@@ -0,0 +1,291 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/tegra/nvidia,tegra20-pmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra Power Management Controller (PMC)
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jonathan Hunter <jonathanh@nvidia.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: nvidia,tegra20-pmc
+          - const: nvidia,tegra20-pmc
+          - const: nvidia,tegra30-pmc
+          - const: nvidia,tegra114-pmc
+          - const: nvidia,tegra124-pmc
+          - const: nvidia,tegra210-pmc
+
+  reg:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: pclk, clk32k_in
+    description:
+      pclk is the Tegra clock of that name and clk32k_in is 32KHz clock
+      input to Tegra.
+
+  clocks:
+    maxItems: 2
+
+  '#clock-cells':
+    const: 1
+    description:
+      Tegra PMC has clk_out_1, clk_out_2, and clk_out_3.
+      Consumer of PMC clock should specify the desired clock by having
+      the clock ID in its "clocks" phandle cell with pmc clock provider.
+      See include/dt-bindings/soc/tegra-pmc.h for the list of Tegra PMC
+      clock IDs.
+
+  nvidia,invert-interrupt:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Inverts the PMU interrupt signal.
+      The PMU is an external Power Management Unit, whose interrupt output
+      signal is fed into the PMC. This signal is optionally inverted, and
+      then fed into the ARM GIC. The PMC is not involved in the detection
+      or handling of this interrupt signal, merely its inversion.
+
+  nvidia,core-power-req-active-high:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Core power request active-high.
+
+  nvidia,sys-clock-req-active-high:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: System clock request active-high.
+
+  nvidia,combined-power-req:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: combined power request for CPU and Core.
+
+  nvidia,cpu-pwr-good-en:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      CPU power good signal from external PMIC to PMC is enabled.
+
+  nvidia,suspend-mode:
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [0, 1, 2]
+    description:
+      The suspend mode that the platform should use.
+      Mode 0 is for LP0, CPU + Core voltage off and DRAM in self-refresh
+      Mode 1 is for LP1, CPU voltage off and DRAM in self-refresh
+      Mode 2 is for LP2, CPU voltage off
+
+  nvidia,cpu-pwr-good-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: CPU power good time in uSec.
+
+  nvidia,cpu-pwr-off-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: CPU power off time in uSec.
+
+  nvidia,core-pwr-good-time:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      <Oscillator-stable-time Power-stable-time>
+      Core power good time in uSec.
+
+  nvidia,core-pwr-off-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Core power off time in uSec.
+
+  nvidia,lp0-vec:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      <start length> Starting address and length of LP0 vector.
+      The LP0 vector contains the warm boot code that is executed
+      by AVP when resuming from the LP0 state.
+      The AVP (Audio-Video Processor) is an ARM7 processor and
+      always being the first boot processor when chip is power on
+      or resume from deep sleep mode. When the system is resumed
+      from the deep sleep mode, the warm boot code will restore
+      some PLLs, clocks and then brings up CPU0 for resuming the
+      system.
+
+  i2c-thermtrip:
+    type: object
+    description:
+      On Tegra30, Tegra114 and Tegra124 if i2c-thermtrip subnode exists,
+      hardware-triggered thermal reset will be enabled.
+
+    properties:
+      nvidia,i2c-controller-id:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          ID of I2C controller to send poweroff command to PMU.
+          Valid values are described in section 9.2.148
+          "APBDEV_PMC_SCRATCH53_0" of the Tegra K1 Technical Reference
+          Manual.
+
+      nvidia,bus-addr:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Bus address of the PMU on the I2C bus.
+
+      nvidia,reg-addr:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: PMU I2C register address to issue poweroff command.
+
+      nvidia,reg-data:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Poweroff command to write to PMU.
+
+      nvidia,pinmux-id:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          Pinmux used by the hardware when issuing Poweroff command.
+          Defaults to 0. Valid values are described in section 12.5.2
+          "Pinmux Support" of the Tegra4 Technical Reference Manual.
+
+    required:
+      - nvidia,i2c-controller-id
+      - nvidia,bus-addr
+      - nvidia,reg-addr
+      - nvidia,reg-data
+
+  powergates:
+    type: object
+    description:
+      This node contains a hierarchy of power domain nodes, which should
+      match the powergates on the Tegra SoC. Each powergate node
+      represents a power-domain on the Tegra SoC that can be power-gated
+      by the Tegra PMC.
+      Hardware blocks belonging to a power domain should contain
+      "power-domains" property that is a phandle pointing to corresponding
+      powergate node.
+      Please refer to Tegra TRM for mode details on the powergate nodes to
+      use for each power-gate block inside Tegra.
+
+    patternProperties:
+      "^[a-z0-9]+$":
+        if:
+          type: object
+        then:
+          patternProperties:
+            clocks:
+              description:
+                Must contain an entry for each clock required by the PMC
+                for controlling a power-gate.
+                See ../clocks/clock-bindings.txt document for more details.
+
+            resets:
+              description:
+                Must contain an entry for each reset required by the PMC
+                for controlling a power-gate.
+                See ../reset/reset.txt for more details.
+
+            '#power-domain-cells':
+              description: Must be 0.
+
+    required:
+      - clocks
+      - resets
+      - '#power-domain-cells'
+
+patternProperties:
+  "^.*@[0-9a-f]+$":
+    type: object
+
+    properties:
+      pins:
+        $ref: /schemas/types.yaml#/definitions/string
+        description: Must contain name of the pad(s) to be configured.
+
+      low-power-enable:
+        $ref: /schemas/types.yaml#/definitions/flag
+        description: Configure the pad into power down mode.
+
+      low-power-disable:
+        $ref: /schemas/types.yaml#/definitions/flag
+        description: Configure the pad into active mode.
+
+      power-source:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          Must contain either TEGRA_IO_PAD_VOLTAGE_1V8 or
+          TEGRA_IO_PAD_VOLTAGE_3V3 to select between signaling voltages.
+          The values are defined in
+          include/dt-bindings/pinctrl/pinctrl-tegra-io-pad.h.
+          Power state can be configured on all Tegra124 and Tegra132
+          pads. None of the Tegra124 or Tegra132 pads support signaling
+          voltage switching.
+          All of the listed Tegra210 pads except pex-cntrl support power
+          state configuration. Signaling voltage switching is supported
+          on below Tegra210 pads.
+          audio, audio-hv, cam, dbg, dmic, gpio, pex-cntrl, sdmmc1,
+          sdmmc3, spi, spi-hv, and uart.
+
+    required:
+      - pins
+
+required:
+  - compatible
+  - reg
+  - clock-names
+  - clocks
+  - '#clock-cells'
+
+if:
+  properties:
+    nvidia,suspend-mode:
+      contains:
+        const: 2
+
+then:
+  required:
+    - nvidia,cpu-pwr-good-time
+    - nvidia,cpu-pwr-off-time
+    - nvidia,core-pwr-good-time
+    - nvidia,core-pwr-off-time
+
+examples:
+  - |
+    #include <dt-bindings/soc/tegra-pmc.h>
+
+    pmc: pmc@7000e400 {
+              compatible = "nvidia,tegra210-pmc";
+              reg = <0x0 0x7000e400 0x0 0x400>;
+              clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>;
+              clock-names = "pclk", "clk32k_in";
+              #clock-cells = <1>;
+
+              powergates {
+                    pd_audio: aud {
+                            clocks = <&tegra_car TEGRA210_CLK_APE>,
+                                     <&tegra_car TEGRA210_CLK_APB2APE>;
+                            resets = <&tegra_car 198>;
+                            #power-domain-cells = <0>;
+                    };
+
+                    pd_xusbss: xusba {
+                            clocks = <&tegra_car TEGRA210_CLK_XUSB_SS>;
+                            resets = <&tegra_car TEGRA210_CLK_XUSB_SS>;
+                            #power-domain-cells = <0>;
+                    };
+              };
+
+              sdmmc1_3v3: sdmmc1-3v3 {
+                      pins = "sdmmc1";
+                      power-source = <TEGRA_IO_PAD_VOLTAGE_3V3>;
+              };
+
+              sdmmc1_1v8: sdmmc1-1v8 {
+                      pins = "sdmmc1";
+                      power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>;
+              };
+
+              nvidia,invert-interrupt;
+              nvidia,suspend-mode = <0>;
+              nvidia,cpu-pwr-good-time = <0>;
+              nvidia,cpu-pwr-off-time = <0>;
+              nvidia,core-pwr-good-time = <4587 3876>;
+              nvidia,core-pwr-off-time = <39065>;
+              nvidia,core-power-req-active-high;
+              nvidia,sys-clock-req-active-high;
+    };
-- 
2.7.4