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From:   Andreas Kemnade <andreas@kemnade.info>
To:     robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de,
        festevam@gmail.com, linux-imx@nxp.com, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        j.neuschaefer@gmx.net
Cc:     Andreas Kemnade <andreas@kemnade.info>
Subject: [PATCH 1/2] ARM: dts: imx6sl-tolino-shine2hd: Add backlight
Date:   Wed, 19 Oct 2022 08:51:58 +0200
Message-Id: <20221019065159.969852-2-andreas@kemnade.info>
In-Reply-To: <20221019065159.969852-1-andreas@kemnade.info>
References: <20221019065159.969852-1-andreas@kemnade.info>
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Add backlight for Tolino Shine2 HD. It uses the PWM
of the embedded controller.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
---
 arch/arm/boot/dts/imx6sl-tolino-shine2hd.dts | 21 ++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/imx6sl-tolino-shine2hd.dts b/arch/arm/boot/dts/imx6sl-tolino-shine2hd.dts
index 663ee9df79e6..ea0ce59aa4f1 100644
--- a/arch/arm/boot/dts/imx6sl-tolino-shine2hd.dts
+++ b/arch/arm/boot/dts/imx6sl-tolino-shine2hd.dts
@@ -18,6 +18,21 @@ / {
 	model = "Tolino Shine 2 HD";
 	compatible = "kobo,tolino-shine2hd", "fsl,imx6sl";
 
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&ec 0 50000>;
+		power-supply = <&backlight_regulator>;
+	};
+
+	backlight_regulator: regulator-backlight {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_backlight_power>;
+		regulator-name = "backlight";
+		gpio = <&gpio2 10 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	chosen {
 		stdout-path = &uart1;
 	};
@@ -299,6 +314,12 @@ &iomuxc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_hog>;
 
+	pinctrl_backlight_power: backlight-powergrp {
+		fsl,pins = <
+			MX6SL_PAD_EPDC_PWRCTRL3__GPIO2_IO10 0x10059
+		>;
+	};
+
 	pinctrl_gpio_keys: gpio-keysgrp {
 		fsl,pins = <
 			MX6SL_PAD_SD1_DAT1__GPIO5_IO08  0x17059
-- 
2.30.2