The blanking calculation currently uses burst_clk_rate for calculating
the settings. Since it's possible to use this in non-burst mode, it's
possible that where won't be burst_clk_rate. Instead, cache the
clock rate configured from of samsung_dsim_set_pll and use it instead.
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
Tested-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/samsung-dsim.c | 4 +++-
include/drm/bridge/samsung-dsim.h | 1 +
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index 53099461cdc2..1dc913db2cb3 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -652,6 +652,8 @@ static unsigned long samsung_dsim_set_pll(struct samsung_dsim *dsi,
reg = samsung_dsim_read(dsi, DSIM_STATUS_REG);
} while ((reg & DSIM_PLL_STABLE) == 0);
+ dsi->hs_clock = fout;
+
return fout;
}
@@ -960,7 +962,7 @@ static void samsung_dsim_set_display_mode(struct samsung_dsim *dsi)
u32 reg;
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
- int byte_clk_khz = dsi->burst_clk_rate / 1000 / 8;
+ int byte_clk_khz = dsi->hs_clock / 1000 / 8;
int hfp = (m->hsync_start - m->hdisplay) * byte_clk_khz / m->clock;
int hbp = (m->htotal - m->hsync_end) * byte_clk_khz / m->clock;
int hsa = (m->hsync_end - m->hsync_start) * byte_clk_khz / m->clock;
diff --git a/include/drm/bridge/samsung-dsim.h b/include/drm/bridge/samsung-dsim.h
index 76ea8a1720cc..14176e6e9040 100644
--- a/include/drm/bridge/samsung-dsim.h
+++ b/include/drm/bridge/samsung-dsim.h
@@ -94,6 +94,7 @@ struct samsung_dsim {
u32 pll_clk_rate;
u32 burst_clk_rate;
+ u32 hs_clock;
u32 esc_clk_rate;
u32 lanes;
u32 mode_flags;
--
2.39.2
