On 5/20/26 6:40 PM, Jérôme de Bretagne via B4 Relay wrote: > From: Jérôme de Bretagne <[email protected]> > > The top USB-C port (usb0) didn't switch to DP alt mode, as reusing the > same GPIO 101 as on the SC8280XP CRD or Lenovo ThinkPad X13s was not > working on the Surface Pro 9 5G. > > Investigation [1] by Jens on the Windows Dev Kit (WDK2023), the other > sc8280xp-based "blackrock" model from Microsoft, found a reference > to GPIO 100 in the DSDT in addition to 101. Switching to GPIO 100 > fixed the issue on blackrock, as it does on arcata to enable > external screen when using the left-side top USB-C port. > > [1] > https://lore.kernel.org/all/20250609-blackrock-usb0-mux-v1-1-7903c3b07...@oldschoolsolutions.biz/ > > Cc: Jens Glathe <[email protected]> > Signed-off-by: Jérôme de Bretagne <[email protected]> > Fixes: f6231a2eefd4 ("arm64: dts: qcom: sc8280xp: Add Microsoft Surface Pro 9 > 5G")
Fixes should go before your sign-off otherwise Reviewed-by: Konrad Dybcio <[email protected]> Konrad
