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drm/imx: enable IDMAC watermark feature 

The DMFC is configured to supply a watermark signal that can be used to
temporarily increase channel priority if the FIFO runs low. Use it.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2019-01-17 12:05:02 +01:00
parent d1fdb6d8f6
commit 72bccb487f
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/imx/ipuv3-plane.c
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@ -638,6 +638,7 @@ static void ipu_plane_atomic_update(struct drm_plane *plane,
ipu_cpmem_set_fmt(ipu_plane->ipu_ch, fb->format->format); ipu_cpmem_set_fmt(ipu_plane->ipu_ch, fb->format->format);
ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, burstsize); ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, burstsize);
ipu_cpmem_set_high_priority(ipu_plane->ipu_ch); ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
ipu_idmac_enable_watermark(ipu_plane->ipu_ch, true);
ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1); ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
ipu_cpmem_set_stride(ipu_plane->ipu_ch, fb->pitches[0]); ipu_cpmem_set_stride(ipu_plane->ipu_ch, fb->pitches[0]);
ipu_cpmem_set_axi_id(ipu_plane->ipu_ch, axi_id); ipu_cpmem_set_axi_id(ipu_plane->ipu_ch, axi_id);