ARM: dts: imx7d: Specify IMX7D_CLK_IPG as "ipg" clock to SDMA

[ Upstream commit 412b032a1dc72fc9d1c258800355efa6671b6315 ] 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 IMX7D_CLK_SDMA results in driver incorrectly thinking that ratio is 1:1 which results in broken SDMA funtionality. Fix the code to specify IMX7D_CLK_IPG as "ipg" clock for SDMA, to avoid detecting incorrect clock ratio. Signed-off-by: Andrey Smirnov <[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] Signed-off-by: Shawn Guo <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
akeromi · Jun 15, 2019 · 36a7fda · 36a7fda
1 parent c84911b
commit 36a7fda
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
@@ -1050,8 +1050,8 @@
 				compatible = "fsl,imx7d-sdma", "fsl,imx35-sdma";
 				reg = <0x30bd0000 0x10000>;
 				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&clks IMX7D_SDMA_CORE_CLK>,
-					 <&clks IMX7D_AHB_CHANNEL_ROOT_CLK>;
+				clocks = <&clks IMX7D_IPG_ROOT_CLK>,
+					 <&clks IMX7D_SDMA_CORE_CLK>;
 				clock-names = "ipg", "ahb";
 				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx7d.bin";