[PATCH v4 07/17] arch: arm64: imx8qm: add can node in devicetree

[Marcel Ziswiler]

From: Joakim Zhang <qiangqing.zhang at nxp.com>

Add CAN node for imx8qm in devicetree.

Unlike on the i.MX 8QXP where the flexcan clocks are shared between
multiple CAN instances, the i.MX 8QM has separate flexcan clock slices.

Signed-off-by: Joakim Zhang <qiangqing.zhang at nxp.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>

---

Changes in v4:
- New patch inspired by the following downstream patch:
  commit 117607e6a7b5 ("arm64: dts: imx8qm: add CAN node in devicetree")

 .../boot/dts/freescale/imx8qm-ss-dma.dtsi     | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
index bbe5f5ecfb92..e9b198c13b2f 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
@@ -16,6 +16,50 @@ uart4_lpcg: clock-controller at 5a4a0000 {
 				     "uart4_lpcg_ipg_clk";
 		power-domains = <&pd IMX_SC_R_UART_4>;
 	};
+
+	can1_lpcg: clock-controller at 5ace0000 {
+		compatible = "fsl,imx8qxp-lpcg";
+		reg = <0x5ace0000 0x10000>;
+		#clock-cells = <1>;
+		clocks = <&clk IMX_SC_R_CAN_1 IMX_SC_PM_CLK_PER>,
+			 <&dma_ipg_clk>, <&dma_ipg_clk>;
+		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>, <IMX_LPCG_CLK_5>;
+		clock-output-names = "can1_lpcg_pe_clk",
+				     "can1_lpcg_ipg_clk",
+				     "can1_lpcg_chi_clk";
+		power-domains = <&pd IMX_SC_R_CAN_1>;
+	};
+
+	can2_lpcg: clock-controller at 5acf0000 {
+		compatible = "fsl,imx8qxp-lpcg";
+		reg = <0x5acf0000 0x10000>;
+		#clock-cells = <1>;
+		clocks = <&clk IMX_SC_R_CAN_2 IMX_SC_PM_CLK_PER>,
+			 <&dma_ipg_clk>, <&dma_ipg_clk>;
+		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>, <IMX_LPCG_CLK_5>;
+		clock-output-names = "can2_lpcg_pe_clk",
+				     "can2_lpcg_ipg_clk",
+				     "can2_lpcg_chi_clk";
+		power-domains = <&pd IMX_SC_R_CAN_2>;
+	};
+};
+
+&flexcan1 {
+	fsl,clk-source = /bits/ 8 <1>;
+};
+
+&flexcan2 {
+	clocks = <&can1_lpcg 1>,
+		 <&can1_lpcg 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>;
+	assigned-clocks = <&clk IMX_SC_R_CAN_2 IMX_SC_PM_CLK_PER>;
+	fsl,clk-source = /bits/ 8 <1>;
 };
 
 &lpuart0 {
-- 
2.35.1