[PATCH v2 12/12] ARM: dts: bcm2711: Tune DMA parameters for HDMI audio
From: Maxime Ripard <hidden>
Date: 2021-05-25 13:25:53
Also in:
alsa-devel, dri-devel, linux-arm-kernel, linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Dom Cobley <redacted> 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 <redacted> Signed-off-by: Maxime Ripard <redacted> --- 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