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[94.181.180.60]) by smtp.gmail.com with ESMTPSA id p12-20020ac246cc000000b004fe0de39fddsm308496lfo.290.2023.08.10.07.55.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Aug 2023 07:55:59 -0700 (PDT) From: Aleksandr Shubin To: linux-kernel@vger.kernel.org Subject: [PATCH v4 1/3] dt-bindings: pwm: Add binding for Allwinner D1/T113-S3/R329 PWM controller Date: Thu, 10 Aug 2023 17:54:26 +0300 Message-Id: <20230810145443.1053387-2-privatesub2@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230810145443.1053387-1-privatesub2@gmail.com> References: <20230810145443.1053387-1-privatesub2@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230810_075602_339730_F90B7826 X-CRM114-Status: GOOD ( 15.69 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, linux-pwm@vger.kernel.org, Conor Dooley , Aleksandr Shubin , Philipp Zabel , Samuel Holland , devicetree@vger.kernel.org, Paul Walmsley , Rob Herring , Chen-Yu Tsai , Thierry Reding , Palmer Dabbelt , Jernej Skrabec , Krzysztof Kozlowski , =?utf-8?q?Uwe_Klei?= =?utf-8?q?ne-K=C3=B6nig?= , linux-riscv@lists.infradead.org, Heiko Stuebner , linux-sunxi@lists.linux.dev, Albert Ou Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Allwinner's D1, T113-S3 and R329 SoCs have a new pwm controller witch is different from the previous pwm-sun4i. The D1 and T113 are identical in terms of peripherals, they differ only in the architecture of the CPU core, and even share the majority of their DT. Because of that, using the same compatible makes sense. The R329 is a different SoC though, and should have a different compatible string added, especially as there is a difference in the number of channels. 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 Reviewed-by: Conor Dooley --- .../bindings/pwm/allwinner,sun20i-pwm.yaml | 86 +++++++++++++++++++ 1 file changed, 86 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..4e6eaa18f342 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml @@ -0,0 +1,86 @@ +# 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: + - Aleksandr Shubin + +properties: + compatible: + oneOf: + - const: allwinner,sun20i-d1-pwm + - items: + - const: allwinner,sun20i-r329-pwm + - 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: + maxItems: 1 + + allwinner,pwm-channels: + $ref: /schemas/types.yaml#/definitions/uint32 + description: The number of PWM channels configured for this instance + enum: [6, 9] + +allOf: + - $ref: pwm.yaml# + + - if: + properties: + compatible: + contains: + const: allwinner,sun20i-r329-pwm + + then: + required: + - allwinner,pwm-channels + + else: + not: + required: + - allwinner,pwm-channels + +unevaluatedProperties: false + +required: + - compatible + - reg + - "#pwm-cells" + - clocks + - clock-names + - resets + +examples: + - | + #include + #include + + 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>; + #pwm-cells = <0x3>; + }; + +...