From: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> This series includes multiple fixes on the tc358768 parallel RGB to DSI driver. With the following changes I am able to have a stable display output using a TI SN65DSI83 (DSI-LVDS bridge) and a 1280 x 800 LVDS display panel and the register values are coherent with Toshiba documentation and configuration spreadsheet, I was not able to test any other display sink. = DSI Video Mode = The driver uses the MIPI_DSI_MODE_LPM flag not correctly, because of that no HS Video is sent at all when this flag is set by the DSI slave. = DSI Timing Parameters = Multiple DSI timing parameters are not correct and this was leading to black or not stable images on some display output. The new formulas were verified with the datasheet and a configuration spread sheet from Toshiba. I did split the change in multiple commits, I can squash all of them together if this is considered better for any reason, including bisect-ability. = PLL computation = Two issues on the PLL computation, one is a required fix to have the bridge working when the parallel RGB input width is not 24, the second one is just following a prescription from the Toshiba documentation. In my test it was not making any difference. Francesco Dolcini (9): drm/bridge: tc358768: always enable HS video mode drm/bridge: tc358768: fix PLL parameters computation drm/bridge: tc358768: fix PLL target frequency drm/bridge: tc358768: fix TCLK_ZEROCNT computation drm/bridge: tc358768: fix TCLK_TRAILCNT computation drm/bridge: tc358768: fix THS_ZEROCNT computation drm/bridge: tc358768: fix TXTAGOCNT computation drm/bridge: tc358768: fix THS_TRAILCNT computation drm/bridge: tc358768: remove unused variable drivers/gpu/drm/bridge/tc358768.c | 53 +++++++++++++++++-------------- 1 file changed, 30 insertions(+), 23 deletions(-) -- 2.25.1
