[PATCH v15 6/6] phy: rockchip: usbdp: Add USB-C state without DP enabled

[Manivannan Sadhasivam]

On Tue, Sep 15, 2026 at 05:32:53PM +0200, Sebastian Reichel wrote:
> The driver currently only differs between 4 lanes DP mode or combined DP
> + USB3 mode. This makes sense from a lane routing point of view, as the
> hardware only has 2 lanes of USB3.
> 
> But adding a separate state for USB-only helps with power management,
> since we always power up all PHY parts according to the current hardware
> setup to avoid data stream interruptions. Even if some lanes are muxed
> to the DP controller there is no need to keep the DP side enabled if
> something without DP AltMode is plugged into USB-C.
> 
> This potentially triggers some more USB reconnections during the PD
> AltMode negotiation when switching from USB-only to combined USB+DP
> mode. This should be fine, as the cable is freshly plugged at this
> point.
> 
> Tested-by: Igor Paunovic <royalnet026 at gmail.com> # Orange Pi 5 Plus
> Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam at oss.qualcomm.com>

- Mani

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