target/linux/bcm27xx/patches-5.10/950-0638-ARM-dts-bcm2711-Tune-DMA-parameters-for-HDMI-audio.patch

   1 From 54643c62b6a848bfcfd86ac4eebbea28c0f1902e Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Wed, 28 Apr 2021 16:10:02 +0200
   4 Subject: [PATCH] ARM: dts: bcm2711: Tune DMA parameters for HDMI audio
   5
   6 Enable NO_WAIT_RESP, DMA_WIDE_SOURCE, DMA_WIDE_DEST, and bump the DMA
   7 panic and AXI priorities to avoid any DMA transfer error with HBR audio
   8 (8 channel, 192Hz).
   9
  10 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  11 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  12 ---
  13  arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
  14  1 file changed, 2 insertions(+), 2 deletions(-)
  15
  16 --- a/arch/arm/boot/dts/bcm2711.dtsi
  17 +++ b/arch/arm/boot/dts/bcm2711.dtsi
  18 @@ -360,7 +360,7 @@
  19                         interrupt-names = "cec-tx", "cec-rx", "cec-low",
  20                                           "wakeup", "hpd-connected", "hpd-removed";
  21                         ddc = <&ddc0>;
  22 -                       dmas = <&dma 10>;
  23 +                       dmas = <&dma (10 | (1 << 27) | (1 << 24)| (15 << 20) | (10 << 16))>;
  24                         dma-names = "audio-rx";
  25                         status = "disabled";
  26                 };
  27 @@ -407,7 +407,7 @@
  28                                      <9>, <10>, <11>;
  29                         interrupt-names = "cec-tx", "cec-rx", "cec-low",
  30                                           "wakeup", "hpd-connected", "hpd-removed";
  31 -                       dmas = <&dma 17>;
  32 +                       dmas = <&dma (17 | (1 << 27) | (1 << 24)| (15 << 20) | (10 << 16))>;
  33                         dma-names = "audio-rx";
  34                         status = "disabled";
  35                 };