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arm64: dts: imx8qm-ss-dma: fix can lpcg indices 

commit 00b4361821 upstream.

can1_lpcg: clock-controller@5ace0000 {
	...						    Col1   Col2
	clocks = <&clk IMX_SC_R_CAN_1 IMX_SC_PM_CLK_PER>,//  0       0
		 <&dma_ipg_clk>,			 //  1       4
		 <&dma_ipg_clk>;			 //  2       5
	clock-indices = <IMX_LPCG_CLK_0>,
			<IMX_LPCG_CLK_4>,
			<IMX_LPCG_CLK_5>;
};

Col1: index, which existing dts try to get.
Col2: actual index in lpcg driver

&flexcan2 {
	clocks = <&can1_lpcg 1>, <&can1_lpcg 0>;
			     ^^		     ^^
Should be:
	clocks = <&can1_lpcg IMX_LPCG_CLK_4>, <&can1_lpcg IMX_LPCG_CLK_0>;
};

Arg0 is divided by 4 in lpcg driver. So flexcan get IMX_SC_PM_CLK_PER by
<&can1_lpcg 1> and <&can1_lpcg 0>. Although function work, code logic is
wrong. Fix it by using correct clock indices.

Cc: stable@vger.kernel.org
Fixes: be85831de0 ("arm64: dts: imx8qm: add can node in devicetree")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Frank Li 2024-04-01 18:25:09 -04:00 committed by Greg Kroah-Hartman
parent 04e018bd91
commit 20ceb2b50f
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
View File

@ -49,15 +49,15 @@
};
&flexcan2 {
clocks = <&can1_lpcg 1>,
<&can1_lpcg 0>;
clocks = <&can1_lpcg IMX_LPCG_CLK_4>,
<&can1_lpcg IMX_LPCG_CLK_0>;
assigned-clocks = <&clk IMX_SC_R_CAN_1 IMX_SC_PM_CLK_PER>;
fsl,clk-source = /bits/ 8 <1>;
};
&flexcan3 {
clocks = <&can2_lpcg 1>,
<&can2_lpcg 0>;
clocks = <&can2_lpcg IMX_LPCG_CLK_4>,
<&can2_lpcg IMX_LPCG_CLK_0>;
assigned-clocks = <&clk IMX_SC_R_CAN_2 IMX_SC_PM_CLK_PER>;
fsl,clk-source = /bits/ 8 <1>;
};