Re: [PATCH v5 3/3] ARM: dts: Enable PWM backlight on rk3288-evb

[Heiko Stübner]

Am Montag, 25. August 2014, 15:59:27 schrieb Doug Anderson:
> PWM0 is the PWM associated with the LCD backlight.  Enable it.
> 
> Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>

Applied to my v3.18-next/dts branch.


> ---
> Changes in v5: None
> Changes in v4: None
> Changes in v3:
> - Fix space to tab in 2 places in DTS.
> - Make sure PWM is upper case in prose.
> 
>  arch/arm/boot/dts/rk3288-evb.dtsi | 53
> +++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi
> b/arch/arm/boot/dts/rk3288-evb.dtsi index 2964370..98b69d0 100644
> --- a/arch/arm/boot/dts/rk3288-evb.dtsi
> +++ b/arch/arm/boot/dts/rk3288-evb.dtsi
> @@ -10,6 +10,7 @@
>   * GNU General Public License for more details.
>   */
> 
> +#include <dt-bindings/pwm/pwm.h>
>  #include "rk3288.dtsi"
> 
>  / {
> @@ -17,6 +18,48 @@
>  		reg = <0x0 0x80000000>;
>  	};
> 
> +	backlight {
> +		compatible = "pwm-backlight";
> +		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 = <128>;
> +		enable-gpios = <&gpio7 2 GPIO_ACTIVE_HIGH>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&bl_en>;
> +		pwms = <&pwm0 0 1000000 PWM_POLARITY_INVERTED>;
> +	};
> +
>  	gpio-keys {
>  		compatible = "gpio-keys";
>  		#address-cells = <1>;
> @@ -81,6 +124,10 @@
>  	status = "okay";
>  };
> 
> +&pwm0 {
> +	status = "okay";
> +};
> +
>  &uart0 {
>  	status = "okay";
>  };
> @@ -102,6 +149,12 @@
>  };
> 
>  &pinctrl {
> +	backlight {
> +		bl_en: bl-en {
> +			rockchip,pins = <7 2 RK_FUNC_GPIO &pcfg_pull_none>;
> +		};
> +	};
> +
>  	buttons {
>  		pwrbtn: pwrbtn {
>  			rockchip,pins = <0 5 RK_FUNC_GPIO &pcfg_pull_up>;

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