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drm/meson: add support for MIPI-DSI transceiver

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The Amlogic G12A/G12B/SM1 SoCs embeds a Synopsys DW-MIPI-DSI transceiver
(ver 1.21a), with a custom glue managing the IP resets, clock and data
inputs similar to the DW-HDMI Glue on other Amlogic SoCs.

This adds support for the Glue managing the transceiver, mimicing the init
flow provided by Amlogic to setup the ENCL encoder, the glue, the transceiver,
the digital D-PHY and the Analog PHY in the proper way.

An optional "MEAS" clock can be enabled to measure the delay between each
vsync feeding the DW-MIPI-DSI transceiver.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.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-v5-12-56eb7a4d5b8e@linaro.org
This commit is contained in:
Neil Armstrong
2023-05-30 09:38:13 +02:00
parent 42dcf15f90
commit 77d9e1e6b8
4 changed files with 520 additions and 0 deletions
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drivers/gpu/drm/meson/Kconfig
+7
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@@ -17,3 +17,10 @@ config DRM_MESON_DW_HDMI
default y if DRM_MESON
select DRM_DW_HDMI
imply DRM_DW_HDMI_I2S_AUDIO
config DRM_MESON_DW_MIPI_DSI
tristate "MIPI DSI Synopsys Controller support for Amlogic Meson Display"
depends on DRM_MESON
default y if DRM_MESON
select DRM_DW_MIPI_DSI
select GENERIC_PHY_MIPI_DPHY