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/openbmc/linux/drivers/gpu/drm/meson/ |
H A D | meson_drv.c | 44e16166 Tue May 30 02:38:10 CDT 2023 Neil Armstrong <neil.armstrong@linaro.org> drm/meson: only use components with dw-hdmi
Only DW-HDMI currently needs components since it reuses the drm-meson driver context to access HHI registers (sic).
Once this is solved, we can get rid on components.
Until now, limit the components matching to the dw-hdmi compatibles we know to require this hack, for other bridges simply use probe defer instead and get over this components sitation.
The back story is that we simply cannot attach DSI adapters bridges if we use components, only DSI panels, this is because we bind/unbind the DSI controller at each drm-meson driver master bind tentative. With this the I2C DSI bridge is unable to find the DSI controller host and everything fails to probe.
This will simplify a lot adding new or older HDMI bridges.
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Nicolas Belin <nbelin@baylibre.com> Tested-by: Nicolas Belin <nbelin@baylibre.com> # on Khadas VIM3 + TS050 Panel Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230512-amlogic-v6-4-upstream-dsi-ccf-vim3-v5-9-56eb7a4d5b8e@linaro.org
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