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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 <robert.chiras@nxp.com>
Tested-by: Robert Chiras <robert.chiras@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Liu Ying 2020-03-30 10:19:35 +08:00
parent 62408b1461
commit a1c49e1eea
1 changed files with 18 additions and 0 deletions
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18
arch/arm64/boot/dts/freescale/imx8x-mek.dtsi
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@ -17,6 +17,24 @@
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>;