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The fixed size of init command in lcm_init_table is wasting lots of
space and we should change to packed array since the command buffer
already provides length information.
With this change, BOE panel init commands have been reduced from 4848
bytes to 1309 bytes.
BUG=b:80501386,b:117254947
TEST=emerge-kukui coreboot chromeos-bootimage; Boots properly
Change-Id: I359dde8e6f2e1c0983f4677193bb47a7ae497ca6
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34778
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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The MT8183 display serial interface (DSI) is based on MIPI
Alliance Specification, supporting high-speed serial data
transfer between host processor and peripheral devices such
as display modules.
DSI supports both video mode and command mode data transfer
defined in MIPI spec, and it also provides bidirectional
transmission with low-power mode to receive messages from
the peripheral.
Reference: MT8183 Application Processor Functional Spec,
6.7 Display Serial Interface (DSI)
BUG=b:80501386,b:117254947
BRANCH=none
TEST=Boots correctly on Kukui
Change-Id: Ic413f524ca0b36f0b01f723a71fe9745e2710cd2
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31591
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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For systems with real MIPI panels (8173/oak was using PS8640 eDP
bridge), we have to send DCS commands to initialize panel.
BUG=b:80501386,b:117254947
TEST=make -j # board = oak and boots
Change-Id: Ie7c824873465ac82a95bcb0ed67b8b9866987008
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34773
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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The video timing should be based on PHY timing. Some values can be
ignored on 8173 because of fixed values in PHY but should be calculated
for newer platforms like 8183.
BUG=b:80501386,b:117254947
TEST=make -j # board = oak and boots
Change-Id: Id3ad2edc08787414a74188f5050460e98222caf4
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34772
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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The PHY timing should be calculated by data rate (Mbps). However for
8173 some values were hard-coded so we want to introduce a new
mtk_phy_timing structure and a weak function mtk_dsi_override_phy_timing
that allows per-SOC customization to apply PHY timings.
BUG=b:80501386,b:117254947
TEST=make -j # board = oak and boots
Change-Id: I1176ca06dda026029ff431aca7f9e21479eed670
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34771
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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The only platform-specific difference in mtk_dsi_phy_clk_setting is how
to configure MIPI TX because those registers (and logic) are quite
different across different SOCs.
The calculation of data rate is actually the same so we should isolate
it and move to common, and rename mtk_dsi_phy_clk_setting to a better
name as mtk_dsi_configure_mipi_tx.
BUG=b:80501386,b:117254947
TEST=make -j # board = oak and boots
Change-Id: I894dc2c4c053267debf5a58313b2bb489bcf5f3a
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34784
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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The 'bpp' was referred to both 'bits per pixel' and 'bytes per pixel' in
MTK DSI driver and should be corrected. By this change we now always
consider 'bpp' as 'bits per pixel', and rename the variables for other
cases.
BUG=b:80501386,b:117254947
TEST=make -j # board = oak and boots
Change-Id: Ibd405220b73859e5592c68f498af07eef8d7edbc
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34770
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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The DSI initialization is almost the same for 8173 and 8183, so we want
to move most of common functions into common/dsi.c.
The major board-specific functions left are:
- reset (controller register has different format)
- pin_drv_ctrl (8183 does not need this)
BUG=b:80501386,b:117254947
TEST=make -j # board=oak (mt8173)
Change-Id: I8d4369a3c84db551287a9c9d1b22f552c5f7518d
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34769
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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