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[61.220.246.151]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2aeae378980sm5219545ad.84.2026.03.10.18.43.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 18:43:16 -0700 (PDT) From: Kyle Hsieh Date: Wed, 11 Mar 2026 09:43:01 +0800 Subject: [PATCH v4 1/2] dt-bindings: adc: ltc2497: add support for ltc2305 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260311-add_ltc2305_driver-v4-1-bc350d347f33@gmail.com> References: <20260311-add_ltc2305_driver-v4-0-bc350d347f33@gmail.com> In-Reply-To: <20260311-add_ltc2305_driver-v4-0-bc350d347f33@gmail.com> To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Beguin Cc: Michael Hennerich , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Kyle Hsieh X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1519; i=kylehsieh1995@gmail.com; h=from:subject:message-id; bh=TvSITG3LE+Bng8Cblqu9isE4WnwGXqZ9Iao1MqgYEdA=; b=owEBbQGS/pANAwAKAaWDQrcJVsSBAcsmYgBpsMiuQr0v3Tpnbe0JWIWNBzuoAbYgw8z157FDl hf1vdy4WViJATMEAAEKAB0WIQTJHsaNZOdY+THGqJelg0K3CVbEgQUCabDIrgAKCRClg0K3CVbE gT4jCAC9onAGYF7TuW80NbJxdpRSa6Ca5Oc2/cJphnCRk5lutYWrFohCaJALpnzE0N5Mpal71X+ H9jzSN2b8tIcb6yyyi6jc5EHJ/RrssKCwVPuX9j7UGF4/8dLoxWDeVBaQQs+wdQpdlL5MA4a233 kFn4Kn9pq4nxraFZPVP2VOGvk8LsaaGii7QiCzZVOlnX42Oajdwin+ArQeenKE9w6+J3Pv3XQZ7 7z0mwzlaPjqNL4j1yuTuEoCGmcMWHh9NoAxoJQpuXYrHR0LsOxWHCVMn60dZI4PoilrIIlHleWm 8La+2+04wjb0GDXeVW8Kjrmn/bVdVkVPZNAxrmyI2UbKslIW X-Developer-Key: i=kylehsieh1995@gmail.com; a=openpgp; fpr=C91EC68D64E758F931C6A897A58342B70956C481 Add documentation for the 2-channel LTC2305 ADC in the existing ltc2497 binding. This enables automatic device tree matching for LTC2305 while using the LTC2309 driver (drivers/iio/adc/ltc2309.c), since both ADCs share the same I2C interface and 12-bit SAR architecture. The main difference is the number of channels (LTC2305: 2, LTC2309: 8). Reviewed-by: Rob Herring (Arm) Signed-off-by: Kyle Hsieh --- Documentation/devicetree/bindings/iio/adc/lltc,ltc2497.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/lltc,ltc2497.yaml b/Documentation/devicetree/bindings/iio/adc/lltc,ltc2497.yaml index 5cc6a9684077..c884b6e03767 100644 --- a/Documentation/devicetree/bindings/iio/adc/lltc,ltc2497.yaml +++ b/Documentation/devicetree/bindings/iio/adc/lltc,ltc2497.yaml @@ -11,6 +11,12 @@ maintainers: - Liam Beguin description: | + LTC2305: + low noise, low power, 2-channel, 12-bit successive approximation ADC with an + I2C compatible serial interface. + + https://www.analog.com/media/en/technical-documentation/data-sheets/23015fb.pdf + LTC2309: low noise, low power, 8-channel, 12-bit successive approximation ADC with an I2C compatible serial interface. @@ -28,6 +34,7 @@ description: | properties: compatible: enum: + - lltc,ltc2305 - lltc,ltc2309 - lltc,ltc2497 - lltc,ltc2499 -- 2.34.1