linux-kernel - [PATCH] arm64: dts: rockchip: disable USB type-c DisplayPort

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Date:   Thu, 24 Sep 2020 14:30:43 +0800
From:   Jian-Hong Pan <jhp@...lessos.org>
To:     Rob Herring <robh+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
        Soeren Moch <smoch@....de>,
        Tobias Schramm <t.schramm@...jaro.org>,
        Johan Jonker <jbx6244@...il.com>,
        Katsuhiro Suzuki <katsuhiro@...suster.net>,
        Hugh Cole-Baker <sigmaris@...il.com>,
        Robin Murphy <robin.murphy@....com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux@...lessm.com, Jian-Hong Pan <jhp@...lessos.org>
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@...lessos.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 06d48338c836..d624c595c533 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 @@ mains_charger: dc-charger {
 };
 
 &cdn_dp {
-	status = "okay";
+	status = "disabled";
 };
 
 &cpu_b0 {
-- 
2.28.0