From baaa92d284d56b261ab58a7e8cbd39634e849421 Mon Sep 17 00:00:00 2001
From: Axel Haslam <ahaslam@baylibre.com>
Date: Thu, 31 Oct 2024 08:17:41 +0100
Subject: [PATCH] dt-bindings: iio: dac: ad5791: Add optional reset, clr and
 ldac gpios

Depending on board layout, the ad57xx may need control of reset, clear,
and ldac pins by the host driver. Add optional bindings for these gpios.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Link: https://patch.msgid.link/20241031071746.848694-2-ahaslam@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 .../devicetree/bindings/iio/dac/adi,ad5791.yaml   | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml
index c81285d84db7..fe664378c966 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml
@@ -31,6 +31,17 @@ properties:
       gain of two configuration.
     type: boolean
 
+  reset-gpios:
+    maxItems: 1
+
+  clear-gpios:
+    maxItems: 1
+
+  ldac-gpios:
+    description:
+      LDAC pin to be used as a hardware trigger to update the DAC channels.
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -44,6 +55,7 @@ unevaluatedProperties: false
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
     spi {
         #address-cells = <1>;
         #size-cells = <0>;
@@ -53,6 +65,9 @@ examples:
             reg = <0>;
             vss-supply = <&dac_vss>;
             vdd-supply = <&dac_vdd>;
+            reset-gpios = <&gpio_bd 16 GPIO_ACTIVE_LOW>;
+            clear-gpios = <&gpio_bd 17 GPIO_ACTIVE_LOW>;
+            ldac-gpios = <&gpio_bd 18 GPIO_ACTIVE_HIGH>;
         };
     };
 ...