Subject: Re: [PATCH 3/5] phy: rockchip: phy-rockchip-typec: Add DRM AUX bridge

From: Heiko Stuebner <[email-masked]>
Date: Thu, 21 May 2026 11:06:12 +0200

Hi,

Am Donnerstag, 21. Mai 2026, 05:28:52 Mitteleuropäische Sommerzeit schrieb Chaoyi Chen:
> From: Chaoyi Chen <[email-masked]>
> 
> Using the DRM_AUX_BRIDGE helper to create the transparent DRM bridge
> device.
> 
> Signed-off-by: Chaoyi Chen <[email-masked]>
> Reviewed-by: Neil Armstrong <[email-masked]>

Reviewed-by: Heiko Stuebner <[email-masked]>

@Vinod:
could you give this patch an Ack to go through the DRM tree please?

It is independent of any other phy changes, but needs the drm-patches 1+2
from this series, so ideally would go through the drm tree together with
them.

Thanks a lot
Heiko

> ---
>  drivers/phy/rockchip/Kconfig              |  2 ++
>  drivers/phy/rockchip/phy-rockchip-typec.c | 13 +++++++++++--
>  2 files changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
> index 14698571b607..9173d3b4fef4 100644
> --- a/drivers/phy/rockchip/Kconfig
> +++ b/drivers/phy/rockchip/Kconfig
> @@ -119,6 +119,8 @@ config PHY_ROCKCHIP_SNPS_PCIE3
>  config PHY_ROCKCHIP_TYPEC
>  	tristate "Rockchip TYPEC PHY Driver"
>  	depends on OF && (ARCH_ROCKCHIP || COMPILE_TEST)
> +	depends on DRM || DRM=n
> +	select DRM_AUX_BRIDGE if DRM_BRIDGE
>  	select EXTCON
>  	select GENERIC_PHY
>  	select RESET_CONTROLLER
> diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c
> index d9701b6106d5..48070b50416e 100644
> --- a/drivers/phy/rockchip/phy-rockchip-typec.c
> +++ b/drivers/phy/rockchip/phy-rockchip-typec.c
> @@ -54,6 +54,7 @@
>  
>  #include <linux/mfd/syscon.h>
>  #include <linux/phy/phy.h>
> +#include <drm/bridge/aux-bridge.h>
>  
>  #define CMN_SSM_BANDGAP			(0x21 << 2)
>  #define CMN_SSM_BIAS			(0x22 << 2)
> @@ -1162,16 +1163,24 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev)
>  
>  	for_each_available_child_of_node(np, child_np) {
>  		struct phy *phy;
> +		ret = 0;
>  
> -		if (of_node_name_eq(child_np, "dp-port"))
> +		if (of_node_name_eq(child_np, "dp-port")) {
>  			phy = devm_phy_create(dev, child_np,
>  					      &rockchip_dp_phy_ops);
> -		else if (of_node_name_eq(child_np, "usb3-port"))
> +			ret = drm_aux_bridge_register_from_node(dev, child_np);
> +		} else if (of_node_name_eq(child_np, "usb3-port"))
>  			phy = devm_phy_create(dev, child_np,
>  					      &rockchip_usb3_phy_ops);
>  		else
>  			continue;
>  
> +		if (ret) {
> +			pm_runtime_disable(dev);
> +			of_node_put(child_np);
> +			return ret;
> +		}
> +
>  		if (IS_ERR(phy)) {
>  			dev_err(dev, "failed to create phy: %pOFn\n",
>  				child_np);
>