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authorAndrey Smirnov <andrew.smirnov@gmail.com>2019-03-28 23:49:16 -0700
committerShawn Guo <shawnguo@kernel.org>2019-04-11 10:27:11 +0800
commitb14c872eebc501b9640b04f4a152df51d6eaf2fc (patch)
tree3732deb6b16e97d4a59a264f726654a611b05b5c /arch/arm/boot
parente345fd42493c1e3517207762f2588b9e293fa47f (diff)
ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA
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 <andrew.smirnov@gmail.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> 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 Tested-by: Adam Ford <aford173@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/dts/imx6qdl.dtsi2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 38b18a007f48..b3a77bcf00d5 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -928,7 +928,7 @@
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>;