[PATCH] ARM: dts: am437x-sk-evm.dts: fix LCD timings

[PATCH] ARM: dts: am437x-sk-evm.dts: fix LCD timings

[Tomi Valkeinen]

The lcd0 node for am437x-sk-evm.dts contains bad LCD timings, and while
they seem to work with a quick test, doing for example blank/unblank
will give you a black display.

This patch updates the timings to the 'typical' values from the LCD spec
sheet.

Also, the compatible string is completely bogus, as
"osddisplays,osd057T0559-34ts" is _not_ a 480x272 panel. The panel on
the board is a newhaven one. Update the compatible string to reflect
this. Note that this hasn't caused any issues, as the "panel-dpi"
matches the driver.

Cc: <stable@vger.kernel.org> # v3.17+
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 arch/arm/boot/dts/am437x-sk-evm.dts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index 859ff3d620ee..66071c7b3dde 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -100,7 +100,7 @@
 	};
 
 	lcd0: display {
-		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
+		compatible = "newhaven,nhd-4.3-480272ef-atxl", "panel-dpi";
 		label = "lcd";
 
 		pinctrl-names = "default";
@@ -112,11 +112,11 @@
 			clock-frequency = <9000000>;
 			hactive = <480>;
 			vactive = <272>;
-			hfront-porch = <8>;
-			hback-porch = <43>;
-			hsync-len = <4>;
-			vback-porch = <12>;
-			vfront-porch = <4>;
+			hfront-porch = <2>;
+			hback-porch = <2>;
+			hsync-len = <41>;
+			vfront-porch = <2>;
+			vback-porch = <2>;
 			vsync-len = <10>;
 			hsync-active = <0>;
 			vsync-active = <0>;
-- 
2.2.0

[PATCH] ARM: dts: am437x-sk-evm.dts: fix LCD timings

[Tony Lindgren]

* Tomi Valkeinen <tomi.valkeinen@ti.com> [141204 23:42]:
> The lcd0 node for am437x-sk-evm.dts contains bad LCD timings, and while
> they seem to work with a quick test, doing for example blank/unblank
> will give you a black display.
> 
> This patch updates the timings to the 'typical' values from the LCD spec
> sheet.
> 
> Also, the compatible string is completely bogus, as
> "osddisplays,osd057T0559-34ts" is _not_ a 480x272 panel. The panel on
> the board is a newhaven one. Update the compatible string to reflect
> this. Note that this hasn't caused any issues, as the "panel-dpi"
> matches the driver.
> 
> Cc: <stable@vger.kernel.org> # v3.17+
> Tested-by: Felipe Balbi <balbi@ti.com>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

Applying into omap-for-v3.19/fixes thanks.

Tony

> ---
>  arch/arm/boot/dts/am437x-sk-evm.dts | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
> index 859ff3d620ee..66071c7b3dde 100644
> --- a/arch/arm/boot/dts/am437x-sk-evm.dts
> +++ b/arch/arm/boot/dts/am437x-sk-evm.dts
> @@ -100,7 +100,7 @@
>  	};
>  
>  	lcd0: display {
> -		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
> +		compatible = "newhaven,nhd-4.3-480272ef-atxl", "panel-dpi";
>  		label = "lcd";
>  
>  		pinctrl-names = "default";
> @@ -112,11 +112,11 @@
>  			clock-frequency = <9000000>;
>  			hactive = <480>;
>  			vactive = <272>;
> -			hfront-porch = <8>;
> -			hback-porch = <43>;
> -			hsync-len = <4>;
> -			vback-porch = <12>;
> -			vfront-porch = <4>;
> +			hfront-porch = <2>;
> +			hback-porch = <2>;
> +			hsync-len = <41>;
> +			vfront-porch = <2>;
> +			vback-porch = <2>;
>  			vsync-len = <10>;
>  			hsync-active = <0>;
>  			vsync-active = <0>;
> -- 
> 2.2.0
>