This is a note to let you know that I've just added the patch titled

dt-bindings: iio: adc: ad7380: fix ad7380-4 reference supply

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From fbe5956e8809f04e9121923db0b6d1b94f2b93ba Mon Sep 17 00:00:00 2001 From: Julien Stephan jstephan@baylibre.com Date: Tue, 22 Oct 2024 15:22:36 +0200 Subject: dt-bindings: iio: adc: ad7380: fix ad7380-4 reference supply

ad7380-4 is the only device from ad738x family that doesn't have an internal reference. Moreover its external reference is called REFIN in the datasheet while all other use REFIO as an optional external reference. If refio-supply is omitted the internal reference is used.

Fix the binding by adding refin-supply and makes it required for ad7380-4 only.

Fixes: 1a291cc8ee17 ("dt-bindings: iio: adc: ad7380: add support for ad738x-4 4 channels variants") Acked-by: Conor Dooley conor.dooley@microchip.com Reviewed-by: David Lechner dlechner@baylibre.com Signed-off-by: Julien Stephan jstephan@baylibre.com Link: https://patch.msgid.link/20241022-ad7380-fix-supplies-v3-1-f0cefe1b7fa6@bayl... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- .../bindings/iio/adc/adi,ad7380.yaml | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml index bd19abb867d9..0065d6508824 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml @@ -67,6 +67,10 @@ properties: A 2.5V to 3.3V supply for the external reference voltage. When omitted, the internal 2.5V reference is used.

+ refin-supply: + description: + A 2.5V to 3.3V supply for external reference voltage, for ad7380-4 only. + aina-supply: description: The common mode voltage supply for the AINA- pin on pseudo-differential @@ -135,6 +139,23 @@ allOf: ainc-supply: false aind-supply: false

+ # ad7380-4 uses refin-supply as external reference. + # All other chips from ad738x family use refio as optional external reference. + # When refio-supply is omitted, internal reference is used. + - if: + properties: + compatible: + enum: + - adi,ad7380-4 + then: + properties: + refio-supply: false + required: + - refin-supply + else: + properties: + refin-supply: false + examples: - | #include <dt-bindings/interrupt-controller/irq.h>