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path: root/src/drivers/analogix/anx7625
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2020-02-17soc/mediatek: dsi: reduce the hbp and hfp for phy timingJitao Shi
The extra data transfer in DSI, namely, lpx, hs_prepare, hs_zero, hs_exit and the sof/eof of DSI packets, will enlarge the line time, which causes the real frame on dsi bus to be lower than the one calculated by video timing. Therefore, hfp_byte is reduced by d_phy to compensate the increase in time by the extra data transfer. However, if hfp_byte is not large enough, the hsync period will be increased on DSI data, leading to display scrolling in firmware screen. To avoid this situation, this patch changes the DSI Tx driver to reduce both hfp_byte and hbp_byte, with the amount proportional to hfp and hbp, respectively. Refer to kernel's change in CL:1915442. Also rename 'phy_timing' to 'timing' to sync with kernel upstream. Since the phy timing initialization sequence has been corrected, the m value adjustment in the analogix driver can be removed. BUG=b:144824303 BRANCH=kukui TEST=emerge-jacuzzi coreboot TEST=Boots and sees firmware screen on krane and juniper TEST=No scrolling issue on juniper AUO and InnoLux panels Change-Id: I10a4d8a4fb41c309fa1917cf1cdf19dabed98227 Signed-off-by: Yu-Ping Wu <yupingso@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38400 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>
2019-12-17drivers/analogix: Add anx7625 MIPI DSI/DPI to DP bridge driverJitao Shi
The ANX7625 is an ultra-low power 4K Mobile HD Transmitter designed for portable devices. It converts MIPI DSI/DPI to DisplayPort 1.3 4K. BRANCH=none BUG=b:140132295 TEST=emerge-jacuzzi coreboot Change-Id: I02ef29798b0257632e0750f09a4390b3d0226367 Signed-off-by: Jitao Shi <jitao.shi@mediatek.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35623 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>