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[v3,9/9] ARM: dts: imx50: Specify IMX5_CLK_IPG as "ahb" clock to SDMA

Message ID 20190329064924.8728-9-andrew.smirnov@gmail.com (mailing list archive)
State Mainlined, archived
Commit b7b4fda2636296471e29b78c2aa9535d7bedb7a0
Headers show
Series [v3,1/9] ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA | expand

Commit Message

Andrey Smirnov March 29, 2019, 6:49 a.m. UTC 
Since 25aaa75df1e6 SDMA driver uses clock rates of "ipg" and "ahb"
clock to determine if it needs to configure the IP block as operating
at 1:1 or 1:2 clock ratio (ACR bit in SDMAARM_CONFIG). Specifying both
clocks as IMX5_CLK_SDMA results in driver incorrectly thinking that
ratio is 1:1 which results in broken SDMA funtionality. Fix the code
to specify IMX5_CLK_AHB as "ahb" clock for SDMA, to avoid detecting
incorrect clock ratio.

Fixes: 25aaa75df1e6 ("dmaengine: imx-sdma: add clock ratio 1:1 check")
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm/boot/dts/imx50.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/arm/boot/dts/imx50.dtsi b/arch/arm/boot/dts/imx50.dtsi
index 5dd61bff3b76..0bfe7c91d0eb 100644
--- a/arch/arm/boot/dts/imx50.dtsi
+++ b/arch/arm/boot/dts/imx50.dtsi
@@ -430,7 +430,7 @@ 
 				reg = <0x63fb0000 0x4000>;
 				interrupts = <6>;
 				clocks = <&clks IMX5_CLK_SDMA_GATE>,
-					 <&clks IMX5_CLK_SDMA_GATE>;
+					 <&clks IMX5_CLK_AHB>;
 				clock-names = "ipg", "ahb";
 				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx50.bin";