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@xxxxxxxxxxxxxxx> # v3.17+
Tested-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
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
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