linux-kernel - [PATCH] ARM: dts: imx6sx-sdb: Add headphone detection for sound card

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Message-Id: <1596714617-16387-1-git-send-email-shengjiu.wang@nxp.com>
Date:   Thu,  6 Aug 2020 19:50:17 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] ARM: dts: imx6sx-sdb: Add headphone detection for sound card

Headphone detection is triggered by GPIO, then driver can
switch between speaker and headphone.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 arch/arm/boot/dts/imx6sx-sdb.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/imx6sx-sdb.dtsi b/arch/arm/boot/dts/imx6sx-sdb.dtsi
index 3e5fb72f21fc..15f486a15f24 100644
--- a/arch/arm/boot/dts/imx6sx-sdb.dtsi
+++ b/arch/arm/boot/dts/imx6sx-sdb.dtsi
@@ -165,6 +165,7 @@ sound {
 			"IN3R", "AMIC";
 		mux-int-port = <2>;
 		mux-ext-port = <6>;
+		hp-det-gpio = <&gpio1 17 GPIO_ACTIVE_LOW>;
 	};
 
 	panel {
@@ -374,6 +375,9 @@ &wdog1 {
 
 &iomuxc {
 	imx6x-sdb {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_hog>;
+
 		pinctrl_audmux: audmuxgrp {
 			fsl,pins = <
 				MX6SX_PAD_CSI_DATA00__AUDMUX_AUD6_TXC	0x130b0
@@ -450,6 +454,12 @@ MX6SX_PAD_CSI_DATA05__GPIO1_IO_19 0x17059
 			>;
 		};
 
+		pinctrl_hog: hoggrp {
+			fsl,pins = <
+				MX6SX_PAD_CSI_DATA03__GPIO1_IO_17 0x17059
+			>;
+		};
+
 		pinctrl_i2c1: i2c1grp {
 			fsl,pins = <
 				MX6SX_PAD_GPIO1_IO01__I2C1_SDA		0x4001b8b1
-- 
2.27.0