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vc4/drm: Increase hdmi audio axi priority to avoid lost samples
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With HBR audio (8 channel 192kHz) we get occasional VC4_HD_MAI_CTL_DLATE error flags in
HDMI_MAI_CTL which seem to correspond with audio dropouts.

Increasing the normal AXI priority for dma is needed to avoid these

Signed-off-by: Dom Cobley <[email protected]>
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popcornmix authored and pelwell committed Mar 12, 2021
1 parent fe038a6 commit 9601a6d
Showing 1 changed file with 2 additions and 2 deletions.
4 changes: 2 additions & 2 deletions arch/arm/boot/dts/bcm2711-rpi.dtsi
Original file line number Diff line number Diff line change
Expand Up @@ -179,7 +179,7 @@
};

&hdmi0 {
dmas = <&dma (10|(1<<27)|(1<<24)|(0<<16)|(15<<20))>;
dmas = <&dma (10|(1<<27)|(1<<24)|(10<<16)|(15<<20))>;
status = "disabled";
};

Expand All @@ -188,7 +188,7 @@
};

&hdmi1 {
dmas = <&dma (17|(1<<27)|(1<<24)|(0<<16)|(15<<20))>;
dmas = <&dma (17|(1<<27)|(1<<24)|(10<<16)|(15<<20))>;
status = "disabled";
};

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