From 54643c62b6a848bfcfd86ac4eebbea28c0f1902e Mon Sep 17 00:00:00 2001 From: Dom Cobley Date: Wed, 28 Apr 2021 16:10:02 +0200 Subject: [PATCH] ARM: dts: bcm2711: Tune DMA parameters for HDMI audio 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 Signed-off-by: Maxime Ripard --- arch/arm/boot/dts/bcm2711.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm/boot/dts/bcm2711.dtsi +++ b/arch/arm/boot/dts/bcm2711.dtsi @@ -359,7 +359,7 @@ 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"; }; @@ -406,7 +406,7 @@ <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"; };