linux-kernel - [PATCH V4] ASoC: cs42xx8: add reset-gpios in binding document

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Message-ID: <7df2d60911f6c4323c9d11b5fe5341ee31e3940c.1558006342.git.shengjiu.wang@nxp.com>
Date:   Thu, 16 May 2019 11:34:31 +0000
From:   "S.j. Wang" <shengjiu.wang@....com>
To:     "brian.austin@...rus.com" <brian.austin@...rus.com>,
        "Paul.Handrigan@...rus.com" <Paul.Handrigan@...rus.com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH V4] ASoC: cs42xx8: add reset-gpios in binding document

Add reset-gpios property, which is optional.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
Changes in V4
- use gpios instead of gpio

Changes in RESEND v3
- send updated binding document only

Changes in v3
- update binding document.

Changes in v2
- use devm_gpiod_get_optional instead of of_get_named_gpio

 Documentation/devicetree/bindings/sound/cs42xx8.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/cs42xx8.txt b/Documentation/devicetree/bindings/sound/cs42xx8.txt
index 8619a156d038..0138ef559cc4 100644
--- a/Documentation/devicetree/bindings/sound/cs42xx8.txt
+++ b/Documentation/devicetree/bindings/sound/cs42xx8.txt
@@ -14,6 +14,11 @@ Required properties:
   - VA-supply, VD-supply, VLS-supply, VLC-supply: power supplies for the device,
     as covered in Documentation/devicetree/bindings/regulator/regulator.txt
 
+Optional properties:
+
+  - reset-gpios : a GPIO spec to define which pin is connected to the chip's
+    !RESET pin
+
 Example:
 
 cs42888: codec@48 {
@@ -25,4 +30,5 @@ cs42888: codec@48 {
 	VD-supply = <&reg_audio>;
 	VLS-supply = <&reg_audio>;
 	VLC-supply = <&reg_audio>;
+	reset-gpios = <&pca9557_b 1 1>;
 };
-- 
2.21.0