diff options
Diffstat (limited to 'drivers/gpu/drm/imx/dw_hdmi-imx.c')
| -rw-r--r-- | drivers/gpu/drm/imx/dw_hdmi-imx.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c index 0c54acd52145..1a29c71228c9 100644 --- a/drivers/gpu/drm/imx/dw_hdmi-imx.c +++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c @@ -212,11 +212,16 @@ imx6dl_hdmi_mode_valid(struct drm_connector *con, static bool imx8mp_hdmi_check_clk_rate(int rate_khz) { - int rate = rate_khz * 1000; + int rate; /* Check hdmi phy pixel clock support rate */ - if (rate != clk_round_rate(imx8mp_clocks[0].clk, rate)) + rate = clk_round_rate(imx8mp_clocks[0].clk, rate_khz * 1000); + /* Drop mode if pixelclk generated is more than 6% off */ + if ((rate < rate_khz * 940) || (rate > rate_khz * 1060)) { + pr_info("%s: mode with pixelclk %i kHz dropped\n", + __func__, rate_khz); return false; + } return true; } |