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Wed, 25 Mar 2026 07:06:34 +0000 From: Nick Xie To: neil.armstrong@linaro.org, khilman@baylibre.com, martin.blumenstingl@googlemail.com, jbrunet@baylibre.com, jic23@kernel.org, dlechner@baylibre.com, andy@kernel.org Cc: krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, linux-iio@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nick Xie Subject: [PATCH v3 1/4] dt-bindings: iio: adc: amlogic,meson-saradc: add S4 compatible Date: Wed, 25 Mar 2026 15:06:15 +0800 Message-Id: <20260325070618.81955-2-nick@khadas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260325070618.81955-1-nick@khadas.com> References: <20260325070618.81955-1-nick@khadas.com> X-ClientProxiedBy: SI2PR02CA0034.apcprd02.prod.outlook.com (2603:1096:4:195::9) To PS1PPF62EEA9B1D.apcprd03.prod.outlook.com (2603:1096:308::2da) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PS1PPF62EEA9B1D:EE_|JH0PR03MB7343:EE_ X-MS-Office365-Filtering-Correlation-Id: 6db9a336-1f9b-45aa-d08e-08de8a3d0c8a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|52116014|366016|7416014|38350700014|18002099003|22082099003|56012099003; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Add the compatible string for the SARADC (Successive Approximation Register ADC) IP block found in the Amlogic Meson S4 SoC. There are no known differences between the SARADC on S4 and the one on G12A. Therefore, it uses "amlogic,meson-g12a-saradc" as a proper specific fallback. Also add a comment indicating that "amlogic,meson-saradc" must not be used for new devices. It's a made up compatible string that does not correspond to a specific hardware generation and is not used to match any driver. For old devices we keep it as it's part of the ABI. Signed-off-by: Nick Xie --- .../devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml index bb9825e7346dd..70ab4e140e71b 100644 --- a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml @@ -27,7 +27,11 @@ properties: - amlogic,meson-gxm-saradc - amlogic,meson-axg-saradc - amlogic,meson-g12a-saradc + # Usage of this generic fallback is not allowed for new devices - const: amlogic,meson-saradc + - items: + - const: amlogic,meson-s4-saradc + - const: amlogic,meson-g12a-saradc reg: maxItems: 1 -- 2.34.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic