[PATCH v3 11/13] ARM: dts: rockchip: add pwm backlight for rv1108 evb
From: Andy Yan
Date: Thu Aug 10 2017 - 23:47:55 EST
RV1108 EVB uses pwm0 modulate the backlight, add dt
node to enable it.
Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx>
---
Changes in v3: None
Changes in v2: None
arch/arm/boot/dts/rv1108-evb.dts | 43 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/arch/arm/boot/dts/rv1108-evb.dts b/arch/arm/boot/dts/rv1108-evb.dts
index 44feea7..77ce707 100644
--- a/arch/arm/boot/dts/rv1108-evb.dts
+++ b/arch/arm/boot/dts/rv1108-evb.dts
@@ -55,6 +55,49 @@
stdout-path = "serial2:1500000n8";
bootargs = "root=/dev/mtdblock2 mtdparts=spi-nor:256k@0(u-boot)ro,6m(kernel)ro,9m(rootfs),-(freedisk)";
};
+
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pwm0 0 25000 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 99 100 101 102 103
+ 104 105 106 107 108 109 110 111
+ 112 113 114 115 116 117 118 119
+ 120 121 122 123 124 125 126 127
+ 128 129 130 131 132 133 134 135
+ 136 137 138 139 140 141 142 143
+ 144 145 146 147 148 149 150 151
+ 152 153 154 155 156 157 158 159
+ 160 161 162 163 164 165 166 167
+ 168 169 170 171 172 173 174 175
+ 176 177 178 179 180 181 182 183
+ 184 185 186 187 188 189 190 191
+ 192 193 194 195 196 197 198 199
+ 200 201 202 203 204 205 206 207
+ 208 209 210 211 212 213 214 215
+ 216 217 218 219 220 221 222 223
+ 224 225 226 227 228 229 230 231
+ 232 233 234 235 236 237 238 239
+ 240 241 242 243 244 245 246 247
+ 248 249 250 251 252 253 254 255>;
+ default-brightness-level = <200>;
+ };
+};
+
+&pwm0 {
+ status = "okay";
};
&sdmmc {
--
2.7.4