Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 082/118] ARM: dts: imx53: Specify IMX5_CLK_IPG as "ahb" clock to SDMA | Date | Thu, 13 Jun 2019 10:33:40 +0200 |
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[ Upstream commit 28c168018e0902c67eb9c60d0fc4c8aa166c4efe ]
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.
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 Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/arm/boot/dts/imx53.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi index 6386185ae234..b6b0818343c4 100644 --- a/arch/arm/boot/dts/imx53.dtsi +++ b/arch/arm/boot/dts/imx53.dtsi @@ -701,7 +701,7 @@ 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-imx53.bin"; -- 2.20.1
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