Hi Heiko

On 01/20/2016 03:26 AM, Heiko Stuebner wrote:

Hi Chris,

Am Mittwoch, 6. Januar 2016, 12:03:57 schrieb Chris Zhong:

quoted

This tv080wum-nl0 panel is a mipi panel, it can use in MIPI_TX socket
of rk3288 evb board.

Signed-off-by: Chris Zhong <redacted>

[...]

quoted

diff --git a/arch/arm/boot/dts/rk3288-evb-act8846.dts

b/arch/arm/boot/dts/rk3288-evb-act8846.dts index e662147..7d5475b 100644

--- a/arch/arm/boot/dts/rk3288-evb-act8846.dts
+++ b/arch/arm/boot/dts/rk3288-evb-act8846.dts

@@ -50,6 +50,8 @@
  		gpio = <&gpio7 3 GPIO_ACTIVE_HIGH>;
  		pinctrl-names = "default";
  		pinctrl-0 = <&lcd_en>;
+		regulator-always-on;
+		regulator-boot-on;

Is this only needed for the panel itself and can you try to get the panel
supplies set up correctly instead in that case please?

It is not only for panel, LCDC_VDD need this supply too.
And rk3288-evb-rk808.dts has set this regulator to always on, so I do 
the same thing in here.

quoted

  		regulator-name = "vcc_lcd";
  		vin-supply = <&vcc_io>;
  	};

diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi

b/arch/arm/boot/dts/rk3288-evb.dtsi index 4faabdb..0c91858 100644

--- a/arch/arm/boot/dts/rk3288-evb.dtsi
+++ b/arch/arm/boot/dts/rk3288-evb.dtsi

@@ -47,7 +47,7 @@
  		reg = <0x0 0x80000000>;
  	};

-	backlight {
+	backlight: backlight {
  		compatible = "pwm-backlight";
  		brightness-levels = <
  			  0   1   2   3   4   5   6   7

@@ -183,6 +183,16 @@
  	status = "okay";
  };

+&mipi_dsi {
+	status = "okay";
+	panel {
+		compatible ="boe,tv080wum-nl0";
+		reg = <0>;
+		backlight = <&backlight>;
+		status = "okay";

in the evb-schematics I see, vcc_lcd as supply for the panel.

So I'd think the panel node here should have a
	power-supply = <&vcc_lcd>;
instead of having the always-on above?


Thanks
Heiko

quoted

+	};
+};
+
  &sdmmc {
  	bus-width = <4>;
  	cap-mmc-highspeed;