summaryrefslogtreecommitdiff
path: root/arch/arm64
diff options
context:
space:
mode:
authorShengjiu Wang <shengjiu.wang@nxp.com>2018-08-24 16:38:53 +0800
committerShengjiu Wang <shengjiu.wang@nxp.com>2018-08-27 14:35:09 +0800
commitd5b70e9232218c419f7f6f843249e4bba84156b6 (patch)
treecca3eab3e936a52d8d1a756d04b88848de0c4059 /arch/arm64
parentb1d540a2bcb1b84039157fb170b993ff9da4a4bc (diff)
MLK-18643: ARM64: dts: imx8mm: change the sdma script for SAI
The IMX_DMATYPE_SAI(24) performance is not enough to support high sample rate/channels of audio case, there is a lot of underrun and the sound is noise, the reason is that with this script, sdma copy data through a long path (SDMA->pl301_audio -> pl301_display -> … -> pl301_wakeup -> AIPS1 -> SPBA2 -> SAI). The IMX_DMATYPE_SSI_SP(2) performance is better, which go through a shorter path (SDMA -> SPBA2 -> SAI). So we switch to use the IMX_DMATYPE_SSI_SP script, then 384k/32b/16c is supported well. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Diffstat (limited to 'arch/arm64')
-rwxr-xr-xarch/arm64/boot/dts/freescale/fsl-imx8mm.dtsi10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8mm.dtsi b/arch/arm64/boot/dts/freescale/fsl-imx8mm.dtsi
index ddc84dca3681..f4c786e94e98 100755
--- a/arch/arm64/boot/dts/freescale/fsl-imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8mm.dtsi
@@ -716,7 +716,7 @@
<&clk IMX8MM_CLK_SAI1_ROOT>,
<&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
- dmas = <&sdma2 0 24 0>, <&sdma2 1 24 0>;
+ dmas = <&sdma2 0 2 0>, <&sdma2 1 2 0>;
dma-names = "rx", "tx";
fsl,dataline = <0xff 0xff>;
status = "disabled";
@@ -732,7 +732,7 @@
<&clk IMX8MM_CLK_SAI2_ROOT>,
<&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
- dmas = <&sdma2 2 24 0>, <&sdma2 3 24 0>;
+ dmas = <&sdma2 2 2 0>, <&sdma2 3 2 0>;
dma-names = "rx", "tx";
status = "disabled";
};
@@ -746,7 +746,7 @@
<&clk IMX8MM_CLK_SAI3_ROOT>,
<&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
- dmas = <&sdma2 4 24 0>, <&sdma2 5 24 0>;
+ dmas = <&sdma2 4 2 0>, <&sdma2 5 2 0>;
dma-names = "rx", "tx";
status = "disabled";
};
@@ -760,7 +760,7 @@
<&clk IMX8MM_CLK_SAI5_ROOT>,
<&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
- dmas = <&sdma2 8 24 0>, <&sdma2 9 24 0>;
+ dmas = <&sdma2 8 2 0>, <&sdma2 9 2 0>;
dma-names = "rx", "tx";
fsl,shared-interrupt;
fsl,dataline = <0xf 0xf>;
@@ -777,7 +777,7 @@
<&clk IMX8MM_CLK_SAI6_ROOT>,
<&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
- dmas = <&sdma2 10 24 0>, <&sdma2 11 24 0>;
+ dmas = <&sdma2 10 2 0>, <&sdma2 11 2 0>;
dma-names = "rx", "tx";
fsl,shared-interrupt;
status = "disabled";