From: Quentin Schulz quentin.schulz@cherry.de
UART5 uses GPIO0_B5 as UART RTS but muxed in its GPIO function, therefore UART5 must request this pin to be muxed in that function, so let's do that.
Fixes: 5963d97aa780 ("arm64: dts: rockchip: add rs485 support on uart5 of px30-ringneck-haikou") Cc: stable@vger.kernel.org Signed-off-by: Quentin Schulz quentin.schulz@cherry.de --- arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts index 2321536c553fed20bc02d91f40a5d5a6dc20892c..e9ebac0f4984a26ec288083f74c7e193cdbec326 100644 --- a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts +++ b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts @@ -194,6 +194,13 @@ sd_card_led_pin: sd-card-led-pin { <3 RK_PB3 RK_FUNC_GPIO &pcfg_pull_none>; }; }; + + uart { + uart5_rts_pin: uart5-rts-pin { + rockchip,pins = + <0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>; + }; + }; };
&pwm0 { @@ -227,7 +234,7 @@ &uart0 { };
&uart5 { - pinctrl-0 = <&uart5_xfer>; + pinctrl-0 = <&uart5_xfer &uart5_rts_pin>; rts-gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>; status = "okay"; };