[PATCH v2 15/17] riscv: dts: spacemit: k3-pico-itx: enable the DisplayPort output

[Icenowy Zheng]

在 2026-08-09日的 21:14 +0800，Cody Kang via B4 Relay写道：
> From: Cody Kang <codykang.hk at gmail.com>
> 
> Pico-ITX brings the second DPU's output to an external DisplayPort
> connector. Enable that DPU and the DisplayPort controller it feeds.

The connector available on the Pico-ITX mainboard isn't a DisplayPort
port -- it's a USB Type-C port instead.

I think you need to model the Type-C port and alt functions of it.

Thanks,
Icenowy

> 
> Signed-off-by: Cody Kang <codykang.hk at gmail.com>
> 
> ---
> v2:
> - no change
> ---
>  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 11 +++++++++++
>  arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi | 11 +++++++++++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> index b89c1521e6649..6c31460990a75 100644
> --- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> +++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> @@ -6,6 +6,7 @@
>  #include <dt-bindings/gpio/gpio.h>
>  
>  #include "k3.dtsi"
> +#include "k3-display.dtsi"
>  #include "k3-pinctrl.dtsi"
>  
>  / {
> @@ -221,3 +222,13 @@ hub at 1 {
>  &usb2_phy {
>  	status = "okay";
>  };
> +
> +&dpu1_crtc0 {
> +	status = "okay";
> +};
> +
> +&dp1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&dp1_1_cfg>;
> +	status = "okay";
> +};
> diff --git a/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
> b/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
> index 3ee1471f37985..2f36eba20f1ee 100644
> --- a/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
> +++ b/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
> @@ -11,6 +11,17 @@
>  #define K3_GPIO(x)	(x / 32) (x % 32)
>  
>  &pinctrl {
> +	/omit-if-no-ref/
> +	dp1_1_cfg: dp1-1-cfg {
> +		dp1-pins {
> +			pinmux = <K3_PADCONF(24, 6)>;	/* dp1 hpd
> */
> +
> +			bias-disable;
> +			drive-strength = <25>;
> +			power-source = <3300>;
> +		};
> +	};
> +
>  	gmac0_rgmii_0_cfg: gmac0-rgmii-0-cfg {
>  		gmac0-rgmii-0-pins {
>  			pinmux = <K3_PADCONF(0, 1)>,	/*
> gmac0_rxdv */