[PATCH v2 12/12] ARM: dts: bcm2711: Tune DMA parameters for HDMI audio

From: Maxime Ripard
Date: Tue May 25 2021 - 09:25:53 EST


From: Dom Cobley <popcornmix@xxxxxxxxx>

Enable NO_WAIT_RESP, DMA_WIDE_SOURCE, DMA_WIDE_DEST, and bump the DMA
panic and AXI priorities to avoid any DMA transfer error with HBR audio
(8 channel, 192Hz).

Signed-off-by: Dom Cobley <popcornmix@xxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 720beec54d61..9d1dde973680 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -344,7 +344,7 @@ hdmi0: hdmi@7ef00700 {
interrupt-names = "cec-tx", "cec-rx", "cec-low",
"wakeup", "hpd-connected", "hpd-removed";
ddc = <&ddc0>;
- dmas = <&dma 10>;
+ dmas = <&dma (10 | (1 << 27) | (1 << 24)| (15 << 20) | (10 << 16))>;
dma-names = "audio-rx";
status = "disabled";
};
@@ -385,7 +385,7 @@ hdmi1: hdmi@7ef05700 {
<9>, <10>, <11>;
interrupt-names = "cec-tx", "cec-rx", "cec-low",
"wakeup", "hpd-connected", "hpd-removed";
- dmas = <&dma 17>;
+ dmas = <&dma (17 | (1 << 27) | (1 << 24)| (15 << 20) | (10 << 16))>;
dma-names = "audio-rx";
status = "disabled";
};
--
2.31.1