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dtoverlays: Drop i2c baudrate for Pi 7inch DSI screen to 50kHz
authorDave Stevenson <dave.stevenson@raspberrypi.com>
Mon, 29 Nov 2021 13:11:56 +0000 (13:11 +0000)
committerPhil Elwell <8911409+pelwell@users.noreply.github.com>
Mon, 29 Nov 2021 15:27:31 +0000 (15:27 +0000)
Whilst investigations continue as to why the 7" DSI screen doesn't
work on Pi3 with KMS, drop the I2C baudrate to 50kHz as that seems
to be a reliable workaround.
This will be reverted once the full issue is understood.

https://github.com/raspberrypi/linux/issues/4686

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts patch | blob | history

diff --git a/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
index 5e1700d..5b6f82a 100644 (file)
--- a/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
+++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
@@ -95,6 +95,7 @@
                target = <&i2c0if>;
                __overlay__ {
                        status = "okay";
+                       clock-frequency = <50000>;
                };
        };
 
Domain: System / Kernel;