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[88.156.142.67]) by smtp.gmail.com with ESMTPSA id h18-20020a2eb0f2000000b00279e5247dabsm1699580ljl.18.2022.12.08.02.31.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Dec 2022 02:31:39 -0800 (PST) From: Krzysztof Kozlowski To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Hans Verkuil , Thierry Reding , Jonathan Hunter , Marek Szyprowski , Alain Volmat , Maxime Coquelin , Alexandre Torgue , Joe Tessler , Yannick Fertre , Jeff Chase , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Cc: Krzysztof Kozlowski , Rob Herring Subject: [PATCH v4 7/9] media: dt-bindings: cec-gpio: convert to DT schema Date: Thu, 8 Dec 2022 11:31:13 +0100 Message-Id: <20221208103115.25512-8-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221208103115.25512-1-krzysztof.kozlowski@linaro.org> References: <20221208103115.25512-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Convert HDMI CEC GPIO bindings to DT schema. Signed-off-by: Krzysztof Kozlowski Acked-by: Hans Verkuil Reviewed-by: Rob Herring --- Changes since v3: 1. Add missing SPDX. --- .../devicetree/bindings/media/cec-gpio.txt | 42 ----------- .../bindings/media/cec/cec-gpio.yaml | 74 +++++++++++++++++++ MAINTAINERS | 2 +- 3 files changed, 75 insertions(+), 43 deletions(-) delete mode 100644 Documentation/devicetree/bindings/media/cec-gpio.txt create mode 100644 Documentation/devicetree/bindings/media/cec/cec-gpio.yaml diff --git a/Documentation/devicetree/bindings/media/cec-gpio.txt b/Documentation/devicetree/bindings/media/cec-gpio.txt deleted file mode 100644 index 47e8d73d32a3..000000000000 --- a/Documentation/devicetree/bindings/media/cec-gpio.txt +++ /dev/null @@ -1,42 +0,0 @@ -* HDMI CEC GPIO driver - -The HDMI CEC GPIO module supports CEC implementations where the CEC line -is hooked up to a pull-up GPIO line and - optionally - the HPD line is -hooked up to another GPIO line. - -Please note: the maximum voltage for the CEC line is 3.63V, for the HPD and -5V lines it is 5.3V. So you may need some sort of level conversion circuitry -when connecting them to a GPIO line. - -Required properties: - - compatible: value must be "cec-gpio". - - cec-gpios: gpio that the CEC line is connected to. The line should be - tagged as open drain. - -If the CEC line is associated with an HDMI receiver/transmitter, then the -following property is also required: - - - hdmi-phandle - phandle to the HDMI controller, see also cec.txt. - -If the CEC line is not associated with an HDMI receiver/transmitter, then -the following property is optional and can be used for debugging HPD changes: - - - hpd-gpios: gpio that the HPD line is connected to. - -This property is optional and can be used for debugging changes on the 5V line: - - - v5-gpios: gpio that the 5V line is connected to. - -Example for the Raspberry Pi 3 where the CEC line is connected to -pin 26 aka BCM7 aka CE1 on the GPIO pin header, the HPD line is -connected to pin 11 aka BCM17 and the 5V line is connected to pin -15 aka BCM22 (some level shifter is needed for the HPD and 5V lines!): - -#include - -cec-gpio { - compatible = "cec-gpio"; - cec-gpios = <&gpio 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; - hpd-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>; - v5-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>; -}; diff --git a/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml b/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml new file mode 100644 index 000000000000..64d7ec057672 --- /dev/null +++ b/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/cec/cec-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: HDMI CEC GPIO + +maintainers: + - Hans Verkuil + +description: | + The HDMI CEC GPIO module supports CEC implementations where the CEC line is + hooked up to a pull-up GPIO line and - optionally - the HPD line is hooked up + to another GPIO line. + + Please note:: the maximum voltage for the CEC line is 3.63V, for the HPD and + 5V lines it is 5.3V. So you may need some sort of level conversion + circuitry when connecting them to a GPIO line. + +properties: + compatible: + const: cec-gpio + + cec-gpios: + maxItems: 1 + description: + GPIO that the CEC line is connected to. The line should be tagged as open + drain. + + hpd-gpios: + maxItems: 1 + description: + GPIO that the HPD line is connected to. Used for debugging HPD changes + when the CEC line is not associated with an HDMI receiver/transmitter. + + v5-gpios: + maxItems: 1 + description: + GPIO that the 5V line is connected to. Used for debugging changes on the + 5V line. + +required: + - compatible + - cec-gpios + +allOf: + - $ref: cec-common.yaml# + - if: + required: + - hdmi-phandle + then: + properties: + hpd-gpios: false + + - if: + required: + - hpd-gpios + then: + properties: + hdmi-phandle: false + +unevaluatedProperties: false + +examples: + - | + #include + + cec { + compatible = "cec-gpio"; + cec-gpios = <&gpio 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + hpd-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>; + v5-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 05acbaecef52..197351d3bb57 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4848,7 +4848,7 @@ L: linux-media@vger.kernel.org S: Supported W: http://linuxtv.org T: git git://linuxtv.org/media_tree.git -F: Documentation/devicetree/bindings/media/cec-gpio.txt +F: Documentation/devicetree/bindings/media/cec/cec-gpio.yaml F: drivers/media/cec/platform/cec-gpio/ CELL BROADBAND ENGINE ARCHITECTURE