On Thu, Sep 30, 2021 at 01:28:04AM +0300, Dmitry Osipenko wrote:
Asus TF700T tablet uses TC358768 DPI->DSI bridge that sits between Tegra's DPI output and display panel input. Bridge requires to have stable PCLK output before RGB encoder is enabled because it uses PCLK by itself to clock internal logic and bridge is programmed before Tegra's encoder is enabled. Hence the PCLK clock shifter must be programmed when CRTC is enabled, otherwise clock is unstable and bridge hangs because of it. Move the shifter programming from RGB encoder into CRTC.
Tested-by: Maxim Schwalm maxim.schwalm@gmail.com #TF700T Signed-off-by: Dmitry Osipenko digetx@gmail.com
drivers/gpu/drm/tegra/dc.c | 6 ++++++ drivers/gpu/drm/tegra/rgb.c | 4 ---- 2 files changed, 6 insertions(+), 4 deletions(-)
Applied, thanks.
Thierry