Thank you for resolving this issue so quickly!
I've applied the patch locally and gone through the reproduction
steps. The kernel builds fine now.
Tested-by: Aleksandr Nogikh <nogikh@xxxxxxxxxx>
On Fri, Aug 4, 2023 at 9:38 AM Guido Günther <agx@xxxxxxxxxxx> wrote:
>
> Hi,
> On Thu, Aug 03, 2023 at 08:01:37PM -0700, Randy Dunlap wrote:
> > Three DRM bridge drivers select GENERIC_PHY_MIPI_DPHY when GENERIC_PHY
> > might not be set. This causes Kconfig warnings and a build error.
> >
> > WARNING: unmet direct dependencies detected for GENERIC_PHY_MIPI_DPHY
> > Depends on [n]: GENERIC_PHY [=n]
> > Selected by [y]:
> > - DRM_NWL_MIPI_DSI [=y] && DRM_BRIDGE [=y] && DRM [=y] && COMMON_CLK [=y] && OF [=y] && HAS_IOMEM [=y]
> > - DRM_SAMSUNG_DSIM [=y] && DRM [=y] && DRM_BRIDGE [=y] && COMMON_CLK [=y] && OF [=y] && HAS_IOMEM [=y]
> >
> > (drm/bridge/cadence/Kconfig was found by inspection.)
> >
> > aarch64-linux-ld: drivers/gpu/drm/bridge/samsung-dsim.o: in function `samsung_dsim_set_phy_ctrl':
> > drivers/gpu/drm/bridge/samsung-dsim.c:731: undefined reference to `phy_mipi_dphy_get_default_config_for_hsclk'
> >
> > Prevent these warnings and build error by also selecting GENERIC_PHY
> n> whenever selecting GENERIC_PHY_MIPI_DPHY.
> >
> > Fixes: fced5a364dee ("drm/bridge: cdns: Convert to phy framework")
> > Fixes: 44cfc6233447 ("drm/bridge: Add NWL MIPI DSI host controller support")
> > Fixes: 171b3b1e0f8b ("drm: bridge: samsung-dsim: Select GENERIC_PHY_MIPI_DPHY")
> > Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> > Reported-by: Aleksandr Nogikh <nogikh@xxxxxxxxxx>
> > Link: lore.kernel.org/r/20230803144227.2187749-1-nogikh@xxxxxxxxxx
> > Cc: Adam Ford <aford173@xxxxxxxxx>
> > Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
> > Cc: Guido Günther <agx@xxxxxxxxxxx>
> > Cc: Robert Chiras <robert.chiras@xxxxxxx>
> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> > Cc: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
> > Cc: Robert Foss <rfoss@xxxxxxxxxx>
> > Cc: David Airlie <airlied@xxxxxxxxx>
> > Cc: Daniel Vetter <daniel@xxxxxxxx>
> > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > ---
> > drivers/gpu/drm/bridge/Kconfig | 2 ++
> > drivers/gpu/drm/bridge/cadence/Kconfig | 1 +
> > 2 files changed, 3 insertions(+)
> >
> > diff -- a/drivers/gpu/drm/bridge/cadence/Kconfig b/drivers/gpu/drm/bridge/cadence/Kconfig
> > --- a/drivers/gpu/drm/bridge/cadence/Kconfig
> > +++ b/drivers/gpu/drm/bridge/cadence/Kconfig
> > @@ -4,6 +4,7 @@ config DRM_CDNS_DSI
> > select DRM_KMS_HELPER
> > select DRM_MIPI_DSI
> > select DRM_PANEL_BRIDGE
> > + select GENERIC_PHY
> > select GENERIC_PHY_MIPI_DPHY
> > depends on OF
> > help
> > diff -- a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> > --- a/drivers/gpu/drm/bridge/Kconfig
> > +++ b/drivers/gpu/drm/bridge/Kconfig
> > @@ -181,6 +181,7 @@ config DRM_NWL_MIPI_DSI
> > select DRM_KMS_HELPER
> > select DRM_MIPI_DSI
> > select DRM_PANEL_BRIDGE
> > + select GENERIC_PHY
> > select GENERIC_PHY_MIPI_DPHY
> > select MFD_SYSCON
> > select MULTIPLEXER
> > @@ -227,6 +228,7 @@ config DRM_SAMSUNG_DSIM
> > select DRM_KMS_HELPER
> > select DRM_MIPI_DSI
> > select DRM_PANEL_BRIDGE
> > + select GENERIC_PHY
> > select GENERIC_PHY_MIPI_DPHY
> > help
> > The Samsung MIPI DSIM bridge controller driver.
> >
>
> For NWL:
>
> Reviewed-by: Guido Günther <agx@xxxxxxxxxxx>
>
> Cheers,
> -- Guido
