From 7a6a1ced8a9b477b8cbe527589b22542639bd7e4 Mon Sep 17 00:00:00 2001 From: Liu Ying Date: Mon, 30 Mar 2020 10:19:35 +0800 Subject: [PATCH] LF-1189-14 arm64: imx8qxp-mek: Add backlight support for LCDIF display This patch adds backlight support for LCDIF display on i.MX8qxp mek platform. The backlight brightness is controlled by PWM. Reviewed-by: Robert Chiras Tested-by: Robert Chiras Signed-off-by: Liu Ying --- arch/arm64/boot/dts/freescale/imx8qxp-mek.dts | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts index a7d437bb7ebd..f0199701a024 100755 --- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts +++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts @@ -24,6 +24,24 @@ pinctrl-2 = <&pinctrl_wifi>; }; + lcdif_backlight: lcdif-backlight { + compatible = "pwm-backlight"; + pwms = <&adma_pwm 0 100000 0>; + + brightness-levels = < 0 1 2 3 4 5 6 7 8 9 + 10 11 12 13 14 15 16 17 18 19 + 20 21 22 23 24 25 26 27 28 29 + 30 31 32 33 34 35 36 37 38 39 + 40 41 42 43 44 45 46 47 48 49 + 50 51 52 53 54 55 56 57 58 59 + 60 61 62 63 64 65 66 67 68 69 + 70 71 72 73 74 75 76 77 78 79 + 80 81 82 83 84 85 86 87 88 89 + 90 91 92 93 94 95 96 97 98 99 + 100>; + default-brightness-level = <80>; + }; + lvds_backlight0: lvds_backlight@0 { compatible = "pwm-backlight"; pwms = <&pwm_mipi_lvds0 0 100000 0>; -- 2.17.1