From: Andrey Smirnov Date: Fri, 29 Mar 2019 06:49:16 +0000 (-0700) Subject: ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA X-Git-Tag: v5.1.10~44 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=09c9989cb55d1bab6cbb4a7872fc90c5a2971e98;p=thirdparty%2Fkernel%2Fstable.git ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA [ 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 Reviewed-by: Lucas Stach Cc: Angus Ainslie (Purism) Cc: Chris Healy Cc: Lucas Stach Cc: Fabio Estevam Cc: Shawn Guo Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Tested-by: Adam Ford Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index fe17a3405edc5..2df39c308c833 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -918,7 +918,7 @@ 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>;