[PATCH] arm64: dts: rockchip: Disable CDN DP on Pinebook Pro

From: Matthias Brugger <mbrugger@suse.com>

The CDN DP needs a PHY and a extcon to work correctly. But no extcon is
provided by the device-tree, which leads to an error:
cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
cdn-dp: probe of fec00000.dp failed with error -22

Disable the CDN DP to make graphic work on the Pinebook Pro.

Reported-by: Guillaume Gardet <redacted>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

---

 arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
index 2b5f001ff4a6..9e5d07f5712e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts

@@ -385,10 +385,6 @@ mains_charger: dc-charger {
 	};
 };
 
-&cdn_dp {
-	status = "okay";
-};
-
 &cpu_b0 {
 	cpu-supply = <&vdd_cpu_b>;
 };

-- 
2.31.1

On Thu, 15 Jul 2021 18:41:01 +0200, matthias.bgg@kernel.org wrote:

The CDN DP needs a PHY and a extcon to work correctly. But no extcon is
provided by the device-tree, which leads to an error:
cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
cdn-dp: probe of fec00000.dp failed with error -22

Disable the CDN DP to make graphic work on the Pinebook Pro.

Applied, thanks!

[1/1] arm64: dts: rockchip: Disable CDN DP on Pinebook Pro
      commit: 714b35da2b6eace13bfe23ae02330e3b6a2ea4e7

Best regards,
-- 
Heiko Stuebner [off-list ref]

Heiko Stuebner wrote:

On Thu, 15 Jul 2021 18:41:01 +0200, matthias.bgg@kernel.org wrote:

quoted

The CDN DP needs a PHY and a extcon to work correctly. But no extcon is
provided by the device-tree, which leads to an error:
cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
cdn-dp: probe of fec00000.dp failed with error -22

Disable the CDN DP to make graphic work on the Pinebook Pro.

Applied, thanks!

[1/1] arm64: dts: rockchip: Disable CDN DP on Pinebook Pro
      commit: 714b35da2b6eace13bfe23ae02330e3b6a2ea4e7

Best regards,
-- 
Heiko Stuebner [off-list ref]

Will this patch be submitted to mainline? I can confirm on my pinebook
pro that this solves the issue.