Exynos7870's DSIM requires more time to stabilize its PLL. The current timeout value, 1000, doesn't suffice. Increase the value to 3000, which is just about enough as observed experimentally.
Signed-off-by: Kaustabh Chakraborty <kauschl...@disroot.org> --- drivers/gpu/drm/bridge/samsung-dsim.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index fb2cb09cfd5a4f2fb50f802dc434c0956107b4e9..4b49707730db76aa8fd3ab973b02507436750889 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -755,7 +755,7 @@ static unsigned long samsung_dsim_set_pll(struct samsung_dsim *dsi, samsung_dsim_write(dsi, DSIM_PLLCTRL_REG, reg); - timeout = 1000; + timeout = 3000; do { if (timeout-- == 0) { dev_err(dsi->dev, "PLL failed to stabilize\n"); -- 2.49.0