From: Thierry Reding <treding@xxxxxxxxxx>
Convert the Tegra PWFM bindings from the free-form text format to
json-schema.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
Changes in v2:
- drop Tegra210 example so that validation doesn't fail due to missing
pinmux json-schema conversion
- combine Tegra20 and Tegra186 compatible strings
- drop useless description of the single clock
- remove clock-names property
- remove unnecessary quotes
.../bindings/pwm/nvidia,tegra20-pwm.txt | 78 ---------------
.../bindings/pwm/nvidia,tegra20-pwm.yaml | 96 +++++++++++++++++++
2 files changed, 96 insertions(+), 78 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
create mode 100644 Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml
diff --git a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
deleted file mode 100644
index 47f1abf20118..000000000000
--- a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
+++ /dev/null
@@ -1,78 +0,0 @@
-Tegra SoC PWFM controller
-
-Required properties:
-- compatible: Must be:
- - "nvidia,tegra20-pwm": for Tegra20
- - "nvidia,tegra30-pwm", "nvidia,tegra20-pwm": for Tegra30
- - "nvidia,tegra114-pwm", "nvidia,tegra20-pwm": for Tegra114
- - "nvidia,tegra124-pwm", "nvidia,tegra20-pwm": for Tegra124
- - "nvidia,tegra132-pwm", "nvidia,tegra20-pwm": for Tegra132
- - "nvidia,tegra210-pwm", "nvidia,tegra20-pwm": for Tegra210
- - "nvidia,tegra186-pwm": for Tegra186
- - "nvidia,tegra194-pwm": for Tegra194
- - "nvidia,tegra234-pwm", "nvidia,tegra194-pwm": for Tegra234
-- reg: physical base address and length of the controller's registers
-- #pwm-cells: should be 2. See pwm.yaml in this directory for a description of
- 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
-
-Optional properties:
-============================
-In some of the interface like PWM based regulator device, it is required
-to configure the pins differently in different states, especially in suspend
-state of the system. The configuration of pin is provided via the pinctrl
-DT node as detailed in the pinctrl DT binding document
- Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
-
-The PWM node will have following optional properties.
-pinctrl-names: Pin state names. Must be "default" and "sleep".
-pinctrl-0: phandle for the default/active state of pin configurations.
-pinctrl-1: phandle for the sleep state of pin configurations.
-
-Example:
-
- pwm: pwm@7000a000 {
- compatible = "nvidia,tegra20-pwm";
- reg = <0x7000a000 0x100>;
- #pwm-cells = <2>;
- clocks = <&tegra_car 17>;
- resets = <&tegra_car 17>;
- reset-names = "pwm";
- };
-
-
-Example with the pin configuration for suspend and resume:
-=========================================================
-Suppose pin PE7 (On Tegra210) interfaced with the regulator device and
-it requires PWM output to be tristated when system enters suspend.
-Following will be DT binding to achieve this:
-
-#include <dt-bindings/pinctrl/pinctrl-tegra.h>
-
- pinmux@700008d4 {
- pwm_active_state: pwm_active_state {
- pe7 {
- nvidia,pins = "pe7";
- nvidia,tristate = <TEGRA_PIN_DISABLE>;
- };
- };
-
- pwm_sleep_state: pwm_sleep_state {
- pe7 {
- nvidia,pins = "pe7";
- nvidia,tristate = <TEGRA_PIN_ENABLE>;
- };
- };
- };
-
- pwm@7000a000 {
- /* Mandatory PWM properties */
- pinctrl-names = "default", "sleep";
- pinctrl-0 = <&pwm_active_state>;
- pinctrl-1 = <&pwm_sleep_state>;
- };
diff --git a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml
new file mode 100644
index 000000000000..739d3155dd32
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/nvidia,tegra20-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra PWFM controller
+
+maintainers:
+ - Thierry Reding <thierry.reding@xxxxxxxxx>
+ - Jon Hunter <jonathanh@xxxxxxxxxx>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - nvidia,tegra20-pwm
+ - nvidia,tegra186-pwm
+
+ - items:
+ - enum:
+ - nvidia,tegra30-pwm
+ - nvidia,tegra114-pwm
+ - nvidia,tegra124-pwm
+ - nvidia,tegra132-pwm
+ - nvidia,tegra210-pwm
+ - enum:
+ - nvidia,tegra20-pwm
+
+ - items:
+ - const: nvidia,tegra194-pwm
+ - const: nvidia,tegra186-pwm
+
+ - items:
+ - const: nvidia,tegra234-pwm
+ - const: nvidia,tegra194-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ items:
+ - description: module reset
+
+ reset-names:
+ items:
+ - const: pwm
+
+ "#pwm-cells":
+ const: 2
+
+ pinctrl-names:
+ items:
+ - const: default
+ - const: sleep
+
+ pinctrl-0:
+ description: configuration for the default/active state
+
+ pinctrl-1:
+ description: configuration for the sleep state
+
+ operating-points-v2:
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ power-domains:
+ items:
+ - description: phandle to the core power domain
+
+allOf:
+ - $ref: pwm.yaml
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+ - reset-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/tegra20-car.h>
+
+ pwm: pwm@7000a000 {
+ compatible = "nvidia,tegra20-pwm";
+ reg = <0x7000a000 0x100>;
+ #pwm-cells = <2>;
+ clocks = <&tegra_car TEGRA20_CLK_PWM>;
+ resets = <&tegra_car 17>;
+ reset-names = "pwm";
+ };
--
2.38.1
