[PATCH v15 12/16] phy: rockchip: usbdp: Limit DP lane count to muxed lanes

[Manivannan Sadhasivam]

On Tue, Sep 15, 2026 at 03:49:59PM +0200, Sebastian Reichel wrote:
> In theory the DP controller could request 4 lanes when the PHY is
> restricted to 2 lanes as the other half is used by USB3.
> 
> With the current user (DW-DP) this cannot happen, but as the check is
> cheap and users might change in the future protect things accordingly.
> Not doing so would corrupt USB3 usage by the following code configuring
> the voltages.
> 
> Fixes: 2f70bbddeb45 ("phy: rockchip: add usbdp combo phy driver")
> Reported-by: Sashiko <sashiko-bot at kernel.org>
> Closes: https://lore.kernel.org/linux-phy/20260612165546.98E1F1F000E9@smtp.kernel.org/
> 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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