[ Upstream commit b14c872eebc501b9640b04f4a152df51d6eaf2fc ] 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 IMX6QDL_CLK_SDMA results in driver incorrectly thinking that ratio is 1:1 which results in broken SDMA funtionality(this at least breaks RAVE SP serdev driver on RDU2). Fix the code to specify IMX6QDL_CLK_IPG as "ipg" clock for SDMA, to avoid detecting incorrect clock ratio.
Signed-off-by: Andrey Smirnov <[email protected]> Reviewed-by: Lucas Stach <[email protected]> Cc: Angus Ainslie (Purism) <[email protected]> Cc: Chris Healy <[email protected]> Cc: Lucas Stach <[email protected]> Cc: Fabio Estevam <[email protected]> Cc: Shawn Guo <[email protected]> Cc: [email protected] Cc: [email protected] Tested-by: Adam Ford <[email protected]> Signed-off-by: Shawn Guo <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- arch/arm/boot/dts/imx6qdl.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index 8884b4a3cafb..0fedb0c24eca 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -909,7 +909,7 @@ compatible = "fsl,imx6q-sdma", "fsl,imx35-sdma"; reg = <0x020ec000 0x4000>; interrupts = <0 2 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&clks IMX6QDL_CLK_SDMA>, + clocks = <&clks IMX6QDL_CLK_IPG>, <&clks IMX6QDL_CLK_SDMA>; clock-names = "ipg", "ahb"; #dma-cells = <3>; -- 2.20.1
