linux-kernel - [PATCH V12 RESEND 3/3] ARM: dts: imx7ulp-evk: Add backlight support

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Message-ID: <1557650772-11973-3-git-send-email-Anson.Huang@nxp.com>
Date:   Sun, 12 May 2019 08:51:26 +0000
From:   Anson Huang <anson.huang@....com>
To:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "otavio@...ystems.com.br" <otavio@...ystems.com.br>,
        Leonard Crestez <leonard.crestez@....com>,
        "schnitzeltony@...il.com" <schnitzeltony@...il.com>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        "jan.tuerk@...rion.com" <jan.tuerk@...rion.com>,
        Robin Gong <yibin.gong@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: [PATCH V12 RESEND 3/3] ARM: dts: imx7ulp-evk: Add backlight support

This patch adds i.MX7ULP EVK board MIPI-DSI backlight support.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
No change change, just resend the patch with correct encoding for patch series:
https://patchwork.kernel.org/patch/10937147/
---
 arch/arm/boot/dts/imx7ulp-evk.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/imx7ulp-evk.dts b/arch/arm/boot/dts/imx7ulp-evk.dts
index a09026a..59f094e 100644
--- a/arch/arm/boot/dts/imx7ulp-evk.dts
+++ b/arch/arm/boot/dts/imx7ulp-evk.dts
@@ -22,6 +22,14 @@
 		reg = <0x60000000 0x40000000>;
 	};
 
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&tpm4 1 50000 0>;
+		brightness-levels = <0 20 25 30 35 40 100>;
+		default-brightness-level = <6>;
+		status = "okay";
+	};
+
 	reg_vsd_3v3: regulator-vsd-3v3 {
 		compatible = "regulator-fixed";
 		regulator-name = "VSD_3V3";
@@ -40,6 +48,12 @@
 	status = "okay";
 };
 
+&tpm4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm0>;
+	status = "okay";
+};
+
 &usdhc0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_usdhc0>;
@@ -57,6 +71,12 @@
 		bias-pull-up;
 	};
 
+	pinctrl_pwm0: pwm0grp {
+		fsl,pins = <
+			IMX7ULP_PAD_PTF2__TPM4_CH1	0x2
+		>;
+	};
+
 	pinctrl_usdhc0: usdhc0grp {
 		fsl,pins = <
 			IMX7ULP_PAD_PTD1__SDHC0_CMD	0x43
-- 
2.7.4