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Commit | Line | Data |
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cd033818 SL |
1 | From c566828a0b554e56fa8057351f77c70df7b868fc Mon Sep 17 00:00:00 2001 |
2 | From: Andrey Smirnov <andrew.smirnov@gmail.com> | |
3 | Date: Thu, 28 Mar 2019 23:49:16 -0700 | |
4 | Subject: ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA | |
5 | ||
6 | [ Upstream commit b14c872eebc501b9640b04f4a152df51d6eaf2fc ] | |
7 | ||
8 | Since 25aaa75df1e6 SDMA driver uses clock rates of "ipg" and "ahb" | |
9 | clock to determine if it needs to configure the IP block as operating | |
10 | at 1:1 or 1:2 clock ratio (ACR bit in SDMAARM_CONFIG). Specifying both | |
11 | clocks as IMX6QDL_CLK_SDMA results in driver incorrectly thinking that | |
12 | ratio is 1:1 which results in broken SDMA funtionality(this at least | |
13 | breaks RAVE SP serdev driver on RDU2). Fix the code to specify | |
14 | IMX6QDL_CLK_IPG as "ipg" clock for SDMA, to avoid detecting incorrect | |
15 | clock ratio. | |
16 | ||
17 | Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> | |
18 | Reviewed-by: Lucas Stach <l.stach@pengutronix.de> | |
19 | Cc: Angus Ainslie (Purism) <angus@akkea.ca> | |
20 | Cc: Chris Healy <cphealy@gmail.com> | |
21 | Cc: Lucas Stach <l.stach@pengutronix.de> | |
22 | Cc: Fabio Estevam <fabio.estevam@nxp.com> | |
23 | Cc: Shawn Guo <shawnguo@kernel.org> | |
24 | Cc: linux-arm-kernel@lists.infradead.org | |
25 | Cc: linux-kernel@vger.kernel.org | |
26 | Tested-by: Adam Ford <aford173@gmail.com> | |
27 | Signed-off-by: Shawn Guo <shawnguo@kernel.org> | |
28 | Signed-off-by: Sasha Levin <sashal@kernel.org> | |
29 | --- | |
30 | arch/arm/boot/dts/imx6qdl.dtsi | 2 +- | |
31 | 1 file changed, 1 insertion(+), 1 deletion(-) | |
32 | ||
33 | diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi | |
34 | index e6af41c4bbc1..3992b8ea1c48 100644 | |
35 | --- a/arch/arm/boot/dts/imx6qdl.dtsi | |
36 | +++ b/arch/arm/boot/dts/imx6qdl.dtsi | |
37 | @@ -853,7 +853,7 @@ | |
38 | compatible = "fsl,imx6q-sdma", "fsl,imx35-sdma"; | |
39 | reg = <0x020ec000 0x4000>; | |
40 | interrupts = <0 2 IRQ_TYPE_LEVEL_HIGH>; | |
41 | - clocks = <&clks IMX6QDL_CLK_SDMA>, | |
42 | + clocks = <&clks IMX6QDL_CLK_IPG>, | |
43 | <&clks IMX6QDL_CLK_SDMA>; | |
44 | clock-names = "ipg", "ahb"; | |
45 | #dma-cells = <3>; | |
46 | -- | |
47 | 2.20.1 | |
48 |