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drm/rockchip: rgb: add debug log for mode_valid func

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The debug msg may be like:

rockchip-rgb ff000000.syscon:rgb: [drm:rockchip_rgb_encoder_mode_valid]
*ERROR* mode [320x480] clock 79000 is higher than max_clock 74250

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Change-Id: I179be3bd7bdb5f562c03cb33d30c72364bce74f4
This commit is contained in:
Damon Ding
2022-08-29 11:27:11 +08:00
committed by Tao Huang
parent 060fe22bc9
commit 4501f4263f
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/rockchip/rockchip_rgb.c
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@@ -316,14 +316,18 @@ rockchip_rgb_encoder_mode_valid(struct drm_encoder *encoder,
const struct drm_display_mode *mode)
{
struct rockchip_rgb *rgb = encoder_to_rgb(encoder);
struct device *dev = rgb->dev;
u32 request_clock = mode->clock;
u32 max_clock = rgb->max_dclk_rate;
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
request_clock *= 2;
if (max_clock != 0 && request_clock > max_clock)
if (max_clock != 0 && request_clock > max_clock) {
DRM_DEV_ERROR(dev, "mode [%dx%d] clock %d is higher than max_clock %d\n",
mode->hdisplay, mode->vdisplay, request_clock, max_clock);
return MODE_CLOCK_HIGH;
}
return MODE_OK;
}