linux-kernel - [PATCH v3 1/6] dt-bindings: iio: dac: ad5791: Add optional reset, clr and ldac gpios

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Message-Id: <20241031071746.848694-2-ahaslam@baylibre.com>
Date: Thu, 31 Oct 2024 08:17:41 +0100
From: ahaslam@...libre.com
To: lars@...afoo.de,
	Michael.Hennerich@...log.com,
	jic23@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	nuno.sa@...log.com,
	dlechner@...libre.com
Cc: linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Axel Haslam <ahaslam@...libre.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 1/6] dt-bindings: iio: dac: ad5791: Add optional reset, clr and ldac gpios

From: Axel Haslam <ahaslam@...libre.com>

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@...libre.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Axel Haslam <ahaslam@...libre.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>;
         };
     };
 ...
-- 
2.34.1