Thread (3 messages) 3 messages, 3 authors, 2021-01-25

Re: [PATCH] arm64: dts: rockchip: Disable display for NanoPi R2S

From: Chen-Yu Tsai <wens@kernel.org>
Date: 2021-01-21 05:24:13
Also in: linux-rockchip

On Thu, Jan 21, 2021 at 7:42 AM Robin Murphy [off-list ref] wrote:
NanoPi R2S is headless, so rightly does not enable any of the display
interface hardware, which currently provokes an obnoxious error in the
boot log from the fake DRM device failing to find anything to bind to.
It probably isn't *too* hard to obviate the fake device shenanigans
entirely with a bit of driver reshuffling, but for now let's just
disable it here to shut up the spurious error.
Maybe we should just drop the error message from the driver?

I should probably send a similar patch for the ROCK Pi E. :/
quoted hunk ↗ jump to hunk
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2s.dts | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2s.dts b/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2s.dts
index 2ee07d15a6e3..1eecad724f04 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2s.dts
@@ -114,6 +114,10 @@
        cpu-supply = <&vdd_arm>;
 };

+&display_subsystem {
+       status = "disabled";
+};
+
 &gmac2io {
        assigned-clocks = <&cru SCLK_MAC2IO>, <&cru SCLK_MAC2IO_EXT>;
        assigned-clock-parents = <&gmac_clk>, <&gmac_clk>;
--
2.17.1


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