From patchwork Wed Dec 7 10:22:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 631797 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10F6CC47089 for ; Wed, 7 Dec 2022 10:23:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230434AbiLGKXZ (ORCPT ); Wed, 7 Dec 2022 05:23:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50118 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230435AbiLGKXL (ORCPT ); Wed, 7 Dec 2022 05:23:11 -0500 Received: from mail-lj1-x230.google.com (mail-lj1-x230.google.com [IPv6:2a00:1450:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 073A813CC7 for ; Wed, 7 Dec 2022 02:23:09 -0800 (PST) Received: by mail-lj1-x230.google.com with SMTP id x11so20358971ljh.7 for ; Wed, 07 Dec 2022 02:23:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jRjxOIWtw2A1MKHLuoeh0LkbVWtGv5vFiIYLb5/XtSQ=; b=rZdRENrE6r4Q1b4O/BhpOL0KtKFreF4e7Cl3xftxoPmaN4pumEpBESDltQ2k03yUjm +MPIIoZWLvUEqlMQpHX1J1k8SwS9Y+x7Pp9DEDiqD9LVOZs+8xYNCBCEVrZsG1kJgwff 8JZ31bbFN7iXxsNyE8/wZLCu2nXlB00HOvSOzwrwd4l35+jjHgGpgCwSKUx8BmUM4xre ANvzMTIMZ4wIEypo2R5ycWSY4TII91gWh57tYomEY/Pg2GRpcV9wSyzFRWbQM5ruCxEV wihCcBGhyAK6ApSg0EWV/EJDqQgtkH2fxY1r/Qm1mfPjogpQ7yPjp0Fyw1er+HNoRc6Z +qHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jRjxOIWtw2A1MKHLuoeh0LkbVWtGv5vFiIYLb5/XtSQ=; b=azpl296cUSC/iqpm5vb+nBJRHN/ykIYGI/a4cn31DB5znl3bO3IL1g3fn7BYcVorHI nY8LM+aq/GLer6J6mbwmmh+dSU0X6n69BauamaaWbl9fRD2KRCA2R6sze3+PLnhfmiC9 9LqfmPa2Reui+LAJuC/ZXG4YAE5ZSz2Hos6/XlTbJAS6S8Hr6CIYB55MD2iE5wvDsIyZ JdjioUUZtNYvmgohS2cqb74yglFI7JWasBjQhQoHCZANGvBTSheVla5mVgHnODqz/s+9 /JKOyeLP9J20j/CJOcvsyqeOETOVhwv5PXy8QRMr/h7pbO3/iaxceHy/wt4SsTEWNr8m ai/Q== X-Gm-Message-State: ANoB5pnqjongCt4mlG+axAMoPAo/popeUNl0SdUr1AYD6TboxeFLGUB5 385T1oDd1cMX9uNyYMl8m9760w== X-Google-Smtp-Source: AA0mqf6ST+jI5h6I6J4YO2MV4dEwoINLQIMmBJ+UqP9esDj73j09qKiso3SdFz92qJp2xkJbaX/7eA== X-Received: by 2002:a05:651c:b0e:b0:277:3ca2:dac6 with SMTP id b14-20020a05651c0b0e00b002773ca2dac6mr26866792ljr.143.1670408588505; Wed, 07 Dec 2022 02:23:08 -0800 (PST) Received: from krzk-bin.NAT.warszawa.vectranet.pl (088156142067.dynamic-2-waw-k-3-2-0.vectranet.pl. [88.156.142.67]) by smtp.gmail.com with ESMTPSA id bu31-20020a056512169f00b00499b27a329esm1953183lfb.300.2022.12.07.02.23.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Dec 2022 02:23:08 -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 v3 7/9] media: dt-bindings: cec-gpio: convert to DT schema Date: Wed, 7 Dec 2022 11:22:51 +0100 Message-Id: <20221207102253.26663-8-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221207102253.26663-1-krzysztof.kozlowski@linaro.org> References: <20221207102253.26663-1-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 --- .../devicetree/bindings/media/cec-gpio.txt | 42 ----------- .../bindings/media/cec/cec-gpio.yaml | 73 +++++++++++++++++++ MAINTAINERS | 2 +- 3 files changed, 74 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..19169d58316a --- /dev/null +++ b/Documentation/devicetree/bindings/media/cec/cec-gpio.yaml @@ -0,0 +1,73 @@ +%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