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Wed, 25 Mar 2026 07:06:30 +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 0/4] iio: adc: meson-saradc: add support for Meson S4 Date: Wed, 25 Mar 2026 15:06:14 +0800 Message-Id: <20260325070618.81955-1-nick@khadas.com> X-Mailer: git-send-email 2.34.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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: 24512e9e-17c6-43a5-9046-08de8a3d0a32 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|56012099003; 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There are no known hardware differences between the SARADC on the S4 and the previous G12A generation. The S4 bindings utilize a fallback to G12A, but a dedicated driver match entry is included to ensure the correct part name is exposed to the userspace ABI. Changes in v3: - Patch 1: Updated the commit message to explicitly explain why the comment regarding the generic fallback was added. - Patch 2: Retained the driver patch and updated the commit message to clarify that the dedicated match entry is kept specifically for userspace ABI naming purposes. - Link to v2: https://lore.kernel.org/all/20260323013408.429701-1-nick@khadas.com/ Changes in v2: - Addressed feedback from Krzysztof Kozlowski: - Updated dt-bindings commit message to explain the hardware compatibility. - Separated the S4 compatible string in the YAML bindings to ensure it correctly falls back to the specific "amlogic,meson-g12a-saradc" rather than the generic "amlogic,meson-saradc". - Updated the S4 SoC dtsi to use the correct G12A fallback. - Added Martin's Reviewed-by tags where appropriate. - Link to v1: https://lore.kernel.org/all/20260228065840.702651-1-nick@khadas.com/ Nick Xie (4): dt-bindings: iio: adc: amlogic,meson-saradc: add S4 compatible iio: adc: meson-saradc: add support for Meson S4 arm64: dts: amlogic: meson-s4: add internal SARADC controller arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: add Function key support .../iio/adc/amlogic,meson-saradc.yaml | 4 ++++ .../amlogic/meson-s4-s905y4-khadas-vim1s.dts | 19 +++++++++++++++++++ arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 14 ++++++++++++++ drivers/iio/adc/meson_saradc.c | 8 ++++++++ 4 files changed, 45 insertions(+) -- 2.34.1