[PATCH 1/2] ARM: dts: modify rk3288 jaq backlight-level

[PATCH 1/2] ARM: dts: modify rk3288 jaq backlight-level

[Caesar Wang]

the panel which jaq use require the pwm duty cycle larger than 3%,
when the backlight status from power off to power on, otherwise the
backlight will flush, so we modify the second brightness-level to 8,
and when the backlight from power off to power on the pwm duty cycle
will larger than 3%.

Signed-off-by: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

Changes in v1: None

 arch/arm/boot/dts/rk3288-veyron-jaq.dts | 37 +++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288-veyron-jaq.dts b/arch/arm/boot/dts/rk3288-veyron-jaq.dts
index c2f52cf..991b717 100644
--- a/arch/arm/boot/dts/rk3288-veyron-jaq.dts
+++ b/arch/arm/boot/dts/rk3288-veyron-jaq.dts
@@ -88,6 +88,43 @@
 	};
 };
 
+&backlight {
+	/* Jaq panel PWM must be >= 3%, so start non-zero brightness at 8 */
+	brightness-levels = <
+		  0
+		  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>;
+};
+
 &rk808 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pmic_int_l &dvs_1 &dvs_2>;
-- 
1.9.1

[PATCH 2/2] ARM: dts: jaq: add the power-supply for backlight and panel

[Caesar Wang]

Add a fixed regulator and reference it for the backlight and panle
power supply on rk3288 jaq board.

Signed-off-by: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>

---

Changes in v1:
- Add this series patches are working with ykk'EDP patches
  on rk3288-jaq board.

 arch/arm/boot/dts/rk3288-veyron-jaq.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288-veyron-jaq.dts b/arch/arm/boot/dts/rk3288-veyron-jaq.dts
index 991b717..9367a4c 100644
--- a/arch/arm/boot/dts/rk3288-veyron-jaq.dts
+++ b/arch/arm/boot/dts/rk3288-veyron-jaq.dts
@@ -123,6 +123,11 @@
 		232 233 234 235 236 237 238 239
 		240 241 242 243 244 245 246 247
 		248 249 250 251 252 253 254 255>;
+	power-supply = <&backlight_regulator>;
+};
+
+&panel {
+	power-supply = <&panel_regulator>;
 };
 
 &rk808 {
-- 
1.9.1

Re: [PATCH 1/2] ARM: dts: modify rk3288 jaq backlight-level

[Heiko Stübner]

Hi Caesar,

Am Montag, 7. Dezember 2015, 21:11:08 schrieb Caesar Wang:
> the panel which jaq use require the pwm duty cycle larger than 3%,
> when the backlight status from power off to power on, otherwise the
> backlight will flush, so we modify the second brightness-level to 8,
> and when the backlight from power off to power on the pwm duty cycle
> will larger than 3%.
> 
> Signed-off-by: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>

I've merged the two patches and included them in my series for the veyron edp 
devicetree changes [0].


Heiko

[0] https://github.com/mmind/linux-rockchip/commit/45e3abed0a86c7ee5cea0b35492b65890b928175

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Re: [PATCH 1/2] ARM: dts: modify rk3288 jaq backlight-level

[Caesar Wang]

Heiko,


在 2015年12月15日 05:46, Heiko Stübner 写道:
> Hi Caesar,
>
> Am Montag, 7. Dezember 2015, 21:11:08 schrieb Caesar Wang:
>> the panel which jaq use require the pwm duty cycle larger than 3%,
>> when the backlight status from power off to power on, otherwise the
>> backlight will flush, so we modify the second brightness-level to 8,
>> and when the backlight from power off to power on the pwm duty cycle
>> will larger than 3%.
>>
>> Signed-off-by: Caesar Wang <wxt@rock-chips.com>
> I've merged the two patches and included them in my series for the veyron edp
> devicetree changes [0].
>
>
> Heiko
>
> [0] https://github.com/mmind/linux-rockchip/commit/45e3abed0a86c7ee5cea0b35492b65890b928175

Yep, that's more resonable since we need depend on this edp device node.

https://github.com/rockchip-linux/kernel/commit/6d1491faf1e5eee98dfcd9bb1ba1b7f866cd51ab

>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip



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