diff options
| author | Stefan Eichenberger <stefan.eichenberger@toradex.com> | 2023-01-27 15:10:55 +0100 |
|---|---|---|
| committer | Stefan Eichenberger <eichest@gmail.com> | 2023-01-28 13:16:30 +0100 |
| commit | 268a9b96225ebd3bbf9352ee750ca45f7db8c99d (patch) | |
| tree | 65fc4675e70bde64ae135f3c3fd8250e3cd97474 /drivers | |
| parent | 9f643a5f7e6c1863ada44ae890ad1f881fb70419 (diff) | |
drm/imx: lcdifv3: crtc increase pixel clock tolerance to 10%
Set a pixel clock tolerance of 10% for the DSI interface of the i.MX 8MP
SoCs. There are some resolutions e.g. 1280x1024@60 Hz that do not work
without this commit.
Upstream-Status: Pending
This driver is not upstream and probably never will. It looks like the
function will become part of mxsfb. They don't verify the pixel clock
frequency there.
Related-to: ELB-4728
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/imx/lcdifv3/lcdifv3-crtc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/imx/lcdifv3/lcdifv3-crtc.c b/drivers/gpu/drm/imx/lcdifv3/lcdifv3-crtc.c index 5a7133743850..e594556ffce8 100644 --- a/drivers/gpu/drm/imx/lcdifv3/lcdifv3-crtc.c +++ b/drivers/gpu/drm/imx/lcdifv3/lcdifv3-crtc.c @@ -231,9 +231,9 @@ check_pix_clk: if (rounded_rate <= 0) return MODE_BAD; - /* allow +/-0.5% HDMI pixel clock rate shift */ - if (rounded_rate < pclk_rate * 995 / 1000 || - rounded_rate > pclk_rate * 1005 / 1000) + /* allow +/-10% pixel clock rate shift */ + if (rounded_rate < pclk_rate * 900 / 1000 || + rounded_rate > pclk_rate * 1100 / 1000) return MODE_BAD; return MODE_OK; |