arm64: dts: imx8-ss-dma: fix can lpcg indices

commit 0893392334b5dffdf616a53679c6a2942c46391b upstream.

can0_lpcg: clock-controller@5acd0000 {
	...						   Col1  Col2
	clocks = <&clk IMX_SC_R_CAN_0 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.

flexcan1: can@5a8d0000 {
	clocks = <&can0_lpcg 1>, <&can0_lpcg 0>;
			     ^^		     ^^
Should be:
	clocks = <&can0_lpcg IMX_LPCG_CLK_4>, <&can0_lpcg IMX_LPCG_CLK_0>;
};

Arg0 is divided by 4 in lpcg driver. flexcan driver get IMX_SC_PM_CLK_PER
by <&can0_lpcg 1> and <&can0_lpcg 0>. Although function can work, code
logic is wrong. Fix it by using correct clock indices.

Cc: stable@vger.kernel.org
Fixes: 5e7d5b023e03 ("arm64: dts: imx8qxp: add flexcan in adma")
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>

diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
index adb98a72bdfd911166c0bfdc62a4675240db356e..3c134a818e104d339becb5b3a72c9200cc389640 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
@@ -311,8 +311,8 @@ dma_subsys: bus@5a000000 {
                reg = <0x5a8d0000 0x10000>;
                interrupts = <GIC_SPI 235 IRQ_TYPE_LEVEL_HIGH>;
                interrupt-parent = <&gic>;
-               clocks = <&can0_lpcg 1>,
-                        <&can0_lpcg 0>;
+               clocks = <&can0_lpcg IMX_LPCG_CLK_4>,
+                        <&can0_lpcg IMX_LPCG_CLK_0>;
                clock-names = "ipg", "per";
                assigned-clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>;
                assigned-clock-rates = <40000000>;
@@ -332,8 +332,8 @@ dma_subsys: bus@5a000000 {
                 * CAN1 shares CAN0's clock and to enable CAN0's clock it
                 * has to be powered on.
                 */
-               clocks = <&can0_lpcg 1>,
-                        <&can0_lpcg 0>;
+               clocks = <&can0_lpcg IMX_LPCG_CLK_4>,
+                        <&can0_lpcg IMX_LPCG_CLK_0>;
                clock-names = "ipg", "per";
                assigned-clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>;
                assigned-clock-rates = <40000000>;
@@ -353,8 +353,8 @@ dma_subsys: bus@5a000000 {
                 * CAN2 shares CAN0's clock and to enable CAN0's clock it
                 * has to be powered on.
                 */
-               clocks = <&can0_lpcg 1>,
-                        <&can0_lpcg 0>;
+               clocks = <&can0_lpcg IMX_LPCG_CLK_4>,
+                        <&can0_lpcg IMX_LPCG_CLK_0>;
                clock-names = "ipg", "per";
                assigned-clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>;
                assigned-clock-rates = <40000000>;