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[61.220.246.151]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c635a1309dfsm7010359a12.6.2026.01.25.17.29.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Jan 2026 17:29:58 -0800 (PST) From: Kyle Hsieh Date: Mon, 26 Jan 2026 09:29:41 +0800 Subject: [PATCH v3 1/2] dt-bindings: adc: ltc2497: add support for ltc2305 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260126-add_ltc2305_driver-v3-1-951349a87f97@gmail.com> References: <20260126-add_ltc2305_driver-v3-0-951349a87f97@gmail.com> In-Reply-To: <20260126-add_ltc2305_driver-v3-0-951349a87f97@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=1469; i=kylehsieh1995@gmail.com; h=from:subject:message-id; bh=S8OEpcXpBEONfmjqfR3syMAXK/IV6W+U/9C5wzdJYO0=; b=owEBbQGS/pANAwAKAaWDQrcJVsSBAcsmYgBpdsOQLuw0cN6rc/rw/ZauqQb9eFcDov8xkV6jZ TBh6je1UiOJATMEAAEKAB0WIQTJHsaNZOdY+THGqJelg0K3CVbEgQUCaXbDkAAKCRClg0K3CVbE gdRAB/425xk+uGr6mgYPZvX4GOzehEQD6w9/7E9SbYEp8sVP5YpSDlk95deXw3cXX5y5EqYcUv0 W32dkQvj1TSY9iCT1lKkl3EGih5imyLOlJLNuVPARK+9FPmQLOKyeE9zBrUC2Eedjr66o7GOl3Q rWPa4gfJd03cYMitIy1a/tUb77u3Vnt0q7F6A2fOuTMOy4paprmhFoF+mdrW41RWDo6eo0AsG13 HgWUxqpPbuDBA1A7nbXE/m8d2G8qLIEFtEs8u33kmMDKauKi78k0FX9n4xn6wwkydDFC2AGQNyE QiVcSYXBXyUYfJis7V0o/zTLxKPz2AkTj+SPZxkMW8x4J+r9 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). Signed-off-by: Kyle Hsieh Reviewed-by: Rob Herring (Arm) --- 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 =20 description: | + LTC2305: + low noise, low power, 2-channel, 12-bit successive approximation ADC w= ith an + I2C compatible serial interface. + + https://www.analog.com/media/en/technical-documentation/data-sheets/23= 015fb.pdf + LTC2309: low noise, low power, 8-channel, 12-bit successive approximation ADC w= ith an I2C compatible serial interface. @@ -28,6 +34,7 @@ description: | properties: compatible: enum: + - lltc,ltc2305 - lltc,ltc2309 - lltc,ltc2497 - lltc,ltc2499 --=20 2.34.1