diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0506-vc4-drm-Increase-hdmi-audio-axi-priority-to-avoid-lo.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0506-vc4-drm-Increase-hdmi-audio-axi-priority-to-avoid-lo.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0506-vc4-drm-Increase-hdmi-audio-axi-priority-to-avoid-lo.patch b/target/linux/bcm27xx/patches-5.10/950-0506-vc4-drm-Increase-hdmi-audio-axi-priority-to-avoid-lo.patch new file mode 100644 index 0000000000..e829a24d74 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0506-vc4-drm-Increase-hdmi-audio-axi-priority-to-avoid-lo.patch @@ -0,0 +1,36 @@ +From 40799ca446bed8dcb0bfc667fafb1c3a20f88b87 Mon Sep 17 00:00:00 2001 +From: Dom Cobley <popcornmix@gmail.com> +Date: Fri, 12 Mar 2021 11:26:29 +0000 +Subject: [PATCH] vc4/drm: Increase hdmi audio axi priority to avoid + lost samples + +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 <popcornmix@gmail.com> +--- + arch/arm/boot/dts/bcm2711-rpi.dtsi | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/arch/arm/boot/dts/bcm2711-rpi.dtsi ++++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi +@@ -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"; + }; + +@@ -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"; + }; + |