ARM64: dts: imx8mp: correct sdma1 clk setting

Started by Robin Gong on Aug 31, 2020 · 3 messages from 2 authors · Last reply Sep 1, 2020

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Correct sdma1 ahb clk, otherwise wrong 1:1 clk ratio will be chosed so
that sdma1 function broken. sdma1 should use 1:2 clk, while sdma2/3 use
1:1.

Signed-off-by: Robin Gong <redacted>
---
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index cad2dd7..6038f66 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -702,7 +702,7 @@
 				reg = <0x30bd0000 0x10000>;
 				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clk IMX8MP_CLK_SDMA1_ROOT>,
-					 <&clk IMX8MP_CLK_SDMA1_ROOT>;
+					 <&clk IMX8MP_CLK_AHB>;
 				clock-names = "ipg", "ahb";
 				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx7d.bin";
-- 
2.7.4


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Hi Robin,

On Mon, Aug 31, 2020 at 6:22 AM Robin Gong [off-list ref] wrote:
Correct sdma1 ahb clk, otherwise wrong 1:1 clk ratio will be chosed so
that sdma1 function broken. sdma1 should use 1:2 clk, while sdma2/3 use
1:1.

Signed-off-by: Robin Gong <redacted>
Please add a Fixes tag.

Thanks

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On 2020/08/31 19:12 Fabio Estevam [off-list ref] wrote: 
Hi Robin,

On Mon, Aug 31, 2020 at 6:22 AM Robin Gong [off-list ref] wrote:
quoted
Correct sdma1 ahb clk, otherwise wrong 1:1 clk ratio will be chosed so
that sdma1 function broken. sdma1 should use 1:2 clk, while sdma2/3
use 1:1.

Signed-off-by: Robin Gong <redacted>
Please add a Fixes tag.
Resent with tags, thanks.

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