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-rw-r--r--drivers/gpu/drm/imx/ipuv3-crtc.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 09d6f98..4a393f6 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -161,13 +161,15 @@ static int ipu_crtc_mode_set(struct drm_crtc *crtc,
__func__, encoder_types);
/*
- * If we have DAC, TVDAC or LDB, then we need the IPU DI clock
- * to be the same as the LDB DI clock.
+ * If we have DAC or LDB, then we need the IPU DI clock to be
+ * the same as the LDB DI clock. For TVDAC, derive the IPU DI
+ * clock from 27 MHz TVE_DI clock, but allow to divide it.
*/
if (encoder_types & (BIT(DRM_MODE_ENCODER_DAC) |
- BIT(DRM_MODE_ENCODER_TVDAC) |
BIT(DRM_MODE_ENCODER_LVDS)))
sig_cfg.clkflags = IPU_DI_CLKMODE_SYNC | IPU_DI_CLKMODE_EXT;
+ else if (encoder_types & BIT(DRM_MODE_ENCODER_TVDAC))
+ sig_cfg.clkflags = IPU_DI_CLKMODE_EXT;
else
sig_cfg.clkflags = 0;
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