On 08/31/2016 08:30 PM, Andrzej Hajda wrote:
Hi,
On 08/30/2016 12:50 AM, Randy Li wrote:
It is actually a lvds panel connected through a rga-lvds bridge.
But I really have no idea about what does a port mean in fimd node.
Also how should I configure this panel size? I think the i2c found
on the panel schematic, but it more likely to be used a touch screen
touth. Also the touch screen is not supported in currently driver.
Signed-off-by: Randy Li <ayaka@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos4412-itop-elite.dts | 35 ++++++++++++++++++++++++++---
1 file changed, 32 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/exynos4412-itop-elite.dts b/arch/arm/boot/dts/exynos4412-itop-elite.dts
index e1cda54..2d67385 100644
--- a/arch/arm/boot/dts/exynos4412-itop-elite.dts
+++ b/arch/arm/boot/dts/exynos4412-itop-elite.dts
@@ -139,6 +139,20 @@
assigned-clocks = <&clock CLK_MOUT_CAM0>;
assigned-clock-parents = <&clock CLK_XUSBXTI>;
};
+
+ vcc_sys_lcd: sys-lcd {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc_5v";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ gpio = <&gpl0 4 GPIO_ACTIVE_HIGH>;
+ };
+
+ panel: panel {
+ ddc-i2c-bus = <&i2c_3>;
+ power-supply = <&vcc_sys_lcd>;
+ enable-gpios = <&gpl0 2 GPIO_ACTIVE_HIGH>;
+ };
Panel has no compatible string, which driver will handle this node?
The problem is that, it is panel not supported by kernel. Is it possible
to support without adding a new driver for it ? I know there is a
simple-dpi for MIPI, but what is for parallel video or lvds?
Regards
Andrzej
The other problem is that I don't how to configure the display-times,
the datasheet for CLAA070WP03XG should talk about total time, active
time and blank time for both Horizontal an Vertical time. Does it mean
the front-porch and sync-len for horizontal and vertical are zero ?
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@3 {
+ reg = <3>;
+ rga_lvds: endpoint {
+ remote-endpoint = <&panel>;
+ };
+ };
+ };
+
+ panel: panel@0 {
+ compatible = "panel-simple";
+
+ power-supply = <&vcc_sys_lcd>;
+ enable-gpios = <&gpl0 2 GPIO_ACTIVE_HIGH>;
+ display-timings {
+ timing-0 {
+ clock-frequency = <66770000>;
+ hactive = <800>;
+ vactive = <1280>;
+ hfront-porch = <0>;
+ hback-porch = <64>;
+ hsync-len = <0>;
+ vfront-porch = <0>;
+ vback-porch = <8>;
+ vsync-len = <0>;
+ };
--
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