Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 037/117] ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ahb" clock to SDMA | Date | Thu, 20 Jun 2019 19:56:11 +0200 |
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[ Upstream commit cc839d0f8c284fcb7591780b568f13415bbb737c ]
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 IMX6SL_CLK_SDMA results in driver incorrectly thinking that ratio is 1:1 which results in broken SDMA funtionality. Fix the code to specify IMX6SL_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/imx6sl.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi index 02378db3f5fc..a2c76797e871 100644 --- a/arch/arm/boot/dts/imx6sl.dtsi +++ b/arch/arm/boot/dts/imx6sl.dtsi @@ -704,7 +704,7 @@ reg = <0x020ec000 0x4000>; interrupts = <0 2 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX6SL_CLK_SDMA>, - <&clks IMX6SL_CLK_SDMA>; + <&clks IMX6SL_CLK_AHB>; clock-names = "ipg", "ahb"; #dma-cells = <3>; /* imx6sl reuses imx6q sdma firmware */ -- 2.20.1
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