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Message-Id: <20210518175422.2678665-1-fparent@baylibre.com>
Date: Tue, 18 May 2021 19:54:19 +0200
From: Fabien Parent <fparent@...libre.com>
To: Thierry Reding <thierry.reding@...il.com>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>
Cc: mkorpershoek@...libre.com, Fabien Parent <fparent@...libre.com>,
linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] dt-bindings: pwm: pwm-mtk-disp: convert to YAML schema
Convert the dt-binding documentation for pwm-mtk-disp to YAML.
Signed-off-by: Fabien Parent <fparent@...libre.com>
---
.../devicetree/bindings/pwm/pwm-mtk-disp.txt | 44 ----------
.../devicetree/bindings/pwm/pwm-mtk-disp.yaml | 83 +++++++++++++++++++
2 files changed, 83 insertions(+), 44 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
create mode 100644 Documentation/devicetree/bindings/pwm/pwm-mtk-disp.yaml
diff --git a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
deleted file mode 100644
index 902b271891ae..000000000000
--- a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-MediaTek display PWM controller
-
-Required properties:
- - compatible: should be "mediatek,<name>-disp-pwm":
- - "mediatek,mt2701-disp-pwm": found on mt2701 SoC.
- - "mediatek,mt6595-disp-pwm": found on mt6595 SoC.
- - "mediatek,mt8167-disp-pwm", "mediatek,mt8173-disp-pwm": found on mt8167 SoC.
- - "mediatek,mt8173-disp-pwm": found on mt8173 SoC.
- - reg: physical base address and length of the controller's registers.
- - #pwm-cells: must be 2. See pwm.yaml in this directory for a description of
- the cell format.
- - clocks: phandle and clock specifier of the PWM reference clock.
- - clock-names: must contain the following:
- - "main": clock used to generate PWM signals.
- - "mm": sync signals from the modules of mmsys.
- - pinctrl-names: Must contain a "default" entry.
- - pinctrl-0: One property must exist for each entry in pinctrl-names.
- See pinctrl/pinctrl-bindings.txt for details of the property values.
-
-Example:
- pwm0: pwm@...1e000 {
- compatible = "mediatek,mt8173-disp-pwm",
- "mediatek,mt6595-disp-pwm";
- reg = <0 0x1401e000 0 0x1000>;
- #pwm-cells = <2>;
- clocks = <&mmsys CLK_MM_DISP_PWM026M>,
- <&mmsys CLK_MM_DISP_PWM0MM>;
- clock-names = "main", "mm";
- pinctrl-names = "default";
- pinctrl-0 = <&disp_pwm0_pins>;
- };
-
- backlight_lcd: backlight_lcd {
- compatible = "pwm-backlight";
- pwms = <&pwm0 0 1000000>;
- brightness-levels = <
- 0 16 32 48 64 80 96 112
- 128 144 160 176 192 208 224 240
- 255
- >;
- default-brightness-level = <9>;
- power-supply = <&mt6397_vio18_reg>;
- enable-gpios = <&pio 95 GPIO_ACTIVE_HIGH>;
- };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.yaml b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.yaml
new file mode 100644
index 000000000000..0f016c81cd53
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/pwm/pwm-mtk-disp.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek display PWM controller
+
+maintainers:
+ - Thierry Reding <thierry.reding@...il.com>
+ - Lee Jones <lee.jones@...aro.org>
+ - Matthias Brugger <matthias.bgg@...il.com>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - mediatek,mt2701-disp-pwm
+ - mediatek,mt6595-disp-pwm
+ - mediatek,mt8173-disp-pwm
+ - items:
+ - const: mediatek,mt8167-disp-pwm
+ - const: mediatek,mt8173-disp-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: clock used to generate PWM signals
+ - description: sync signal from the mmsys module
+
+ clock-names:
+ items:
+ - const: main
+ - const: mm
+
+ "#pwm-cells":
+ const: 2
+
+ power-domains:
+ description:
+ List of phandles and PM domain specifiers, as defined by bindings of the
+ PM domain provider (see also ../power_domain.txt).
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/mt8173-clk.h>
+ #include <dt-bindings/gpio/gpio.h>
+ pwm0: pwm@...1e000 {
+ compatible = "mediatek,mt8173-disp-pwm";
+ reg = <0x1401e000 0x1000>;
+ #pwm-cells = <2>;
+ clocks = <&mmsys CLK_MM_DISP_PWM026M>,
+ <&mmsys CLK_MM_DISP_PWM0MM>;
+ clock-names = "main", "mm";
+ pinctrl-names = "default";
+ pinctrl-0 = <&disp_pwm0_pins>;
+ };
+
+ backlight_lcd: backlight_lcd {
+ compatible = "pwm-backlight";
+ pwms = <&pwm0 0 1000000>;
+ brightness-levels = <
+ 0 16 32 48 64 80 96 112
+ 128 144 160 176 192 208 224 240
+ 255
+ >;
+ default-brightness-level = <9>;
+ power-supply = <&mt6397_vio18_reg>;
+ enable-gpios = <&pio 95 GPIO_ACTIVE_HIGH>;
+ };
--
2.31.1
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