diff options
| -rw-r--r-- | drivers/mxc/ipu3/ipu_disp.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mxc/ipu3/ipu_disp.c b/drivers/mxc/ipu3/ipu_disp.c index fc28b3700a7f..e956529dd2cd 100644 --- a/drivers/mxc/ipu3/ipu_disp.c +++ b/drivers/mxc/ipu3/ipu_disp.c @@ -1087,8 +1087,13 @@ int32_t ipu_init_sync_panel(struct ipu_soc *ipu, int disp, uint32_t pixel_clk, rounded_pixel_clk = pixel_clk * 2; rounded_parent_clk = clk_round_rate(di_parent, rounded_pixel_clk); - while (rounded_pixel_clk < rounded_parent_clk) - rounded_pixel_clk += pixel_clk * 2; + while (rounded_pixel_clk < rounded_parent_clk) { + /* the max divider from parent to di is 8 */ + if (rounded_parent_clk / pixel_clk < 8) + rounded_pixel_clk += pixel_clk * 2; + else + rounded_pixel_clk *= 2; + } clk_set_rate(di_parent, rounded_pixel_clk); rounded_pixel_clk = clk_round_rate(ipu->di_clk[disp], pixel_clk); |