ARM: dts: imx51: Specify IMX5_CLK_IPG as "ahb" clock to SDMA

[ Upstream commit 918bbde8085ae147a43dcb491953e0dd8f3e9d6a ]

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>

diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index a5ee25cedc10e37939c5c5e20875403c88d418f4..0a4b9a5d9a9c9698fd71c5e4b6378a6fc77659c5 100644 (file)
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -489,7 +489,7 @@ sdma: sdma@83fb0000 {
                                reg = <0x83fb0000 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-imx51.bin";