The porches must be rounded up to make the samsung-dsim work.

Signed-off-by: Michael Tretter <m.tret...@pengutronix.de>
---
 drivers/gpu/drm/bridge/samsung-dsim.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c 
b/drivers/gpu/drm/bridge/samsung-dsim.c
index 4de6e4f116db..459be953be55 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -974,9 +974,9 @@ static void samsung_dsim_set_display_mode(struct 
samsung_dsim *dsi)
 
        if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
                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;
+               int hfp = DIV_ROUND_UP((m->hsync_start - m->hdisplay) * 
byte_clk_khz, m->clock);
+               int hbp = DIV_ROUND_UP((m->htotal - m->hsync_end) * 
byte_clk_khz, m->clock);
+               int hsa = DIV_ROUND_UP((m->hsync_end - m->hsync_start) * 
byte_clk_khz, m->clock);
 
                /* remove packet overhead when possible */
                hfp = max(hfp - 6, 0);

-- 
2.39.2

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