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-rw-r--r--gnu/packages/patches/linux-libre-arm64-generic-pinebook-lcd.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/gnu/packages/patches/linux-libre-arm64-generic-pinebook-lcd.patch b/gnu/packages/patches/linux-libre-arm64-generic-pinebook-lcd.patch
new file mode 100644
index 0000000000..51ab544d5e
--- /dev/null
+++ b/gnu/packages/patches/linux-libre-arm64-generic-pinebook-lcd.patch
@@ -0,0 +1,40 @@
+From 3a75704e99a118f2d8a4d70f07781558bde85770 Mon Sep 17 00:00:00 2001
+From: Jian-Hong Pan <jhp@endlessos.org>
+Date: Thu, 24 Sep 2020 14:30:43 +0800
+Subject: [PATCH] arm64: dts: rockchip: disable USB type-c DisplayPort
+
+The cdn-dp sub driver probes the device failed on PINEBOOK Pro.
+
+kernel: cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
+kernel: cdn-dp: probe of fec00000.dp failed with error -22
+
+Then, the device halts all of the DRM related device jobs. For example,
+the operations: vop_component_ops, vop_component_ops and
+rockchip_dp_component_ops cannot be bound to corresponding devices. So,
+Xorg cannot find the correct DRM device.
+
+The USB type-C DisplayPort does not work for now. So, disable the
+DisplayPort node until the type-C phy work has been done.
+
+Link: https://patchwork.kernel.org/patch/11794141/#23639877
+Signed-off-by: Jian-Hong Pan <jhp@endlessos.org>
+---
+ arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
+index 219b7507a10f..45769764425d 100644
+--- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
++++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
+@@ -380,7 +380,7 @@
+ };
+
+ &cdn_dp {
+- status = "okay";
++ status = "disabled";
+ };
+
+ &cpu_b0 {
+--
+2.30.2
+