[PATCH v1 1/3] dt-bindings: pwm: Add binding for Allwinner D1/T113-S3/R329 PWM controller
From: Aleksandr Shubin <hidden>
Date: 2023-06-15 14:45:14
Also in:
linux-devicetree, linux-pwm, linux-riscv, linux-sunxi, lkml
Subsystem:
open firmware and flattened device tree bindings, pwm subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Uwe Kleine-König, Linus Torvalds
Allwinner's D1, T113-S3 and R329 SoCs have a new pwm controller witch is different from the previous pwm-sun4i. D1 and T113s SoCs have one PWM controller with 8 channels. R329 SoC has two PWM controllers in both power domains, one of them has 9 channels (CPUX one) and the other has 6 (CPUS one). Add a device tree binding for them. Signed-off-by: Aleksandr Shubin <redacted> --- .../bindings/pwm/allwinner,sun20i-pwm.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml
diff --git a/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml b/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml
new file mode 100644
index 000000000000..e5f9cb2d5c4f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml@@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/allwinner,sun20i-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner D1, T113-S3 and R329 PWM + +maintainers: + - Chen-Yu Tsai <wens@csie.org> + - Maxime Ripard <mripard@kernel.org> + +allOf: + - $ref: pwm.yaml# + +properties: + compatible: + const: allwinner,sun20i-d1-pwm + + reg: + maxItems: 1 + + "#pwm-cells": + const: 3 + + clocks: + items: + - description: 24 MHz oscillator + - description: Bus Clock + + clock-names: + items: + - const: hosc + - const: bus + + resets: + items: + - description: module reset + + allwinner,pwm-channels: + $ref: /schemas/types.yaml#/definitions/uint32 + description: The number of PWM channels configured for this instance + +required: + - compatible + - reg + - "#pwm-cells" + - clocks + - clock-names + - resets + - allwinner,pwm-channels + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/sun20i-d1-ccu.h> + #include <dt-bindings/reset/sun20i-d1-ccu.h> + + pwm: pwm@2000c00 { + compatible = "allwinner,sun20i-d1-pwm"; + reg = <0x02000c00 0x400>; + clocks = <&dcxo>, <&ccu CLK_BUS_PWM>; + clock-names = "hosc", "bus"; + resets = <&ccu RST_BUS_PWM>; + allwinner,pwm-channels = <8>; + #pwm-cells = <0x3>; + }; + +...
--
2.25.1
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