Re: [PATCH 1/2] arm64: dts: ti: k3-am69-sk: Enable CAN interfaces for AM69 SK board

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On 1/18/2024 9:05 PM, sabiya.d@xxxxxxxxxxxxxxxxxxxx wrote:
From: Dasnavis Sabiya <sabiya.d@xxxxxx>

AM69 SK board has several CAN bus interfaces on both MCU and MAIN domains.
This enables the CAN interfaces on MCU and MAIN domain.

Signed-off-by: Dasnavis Sabiya <sabiya.d@xxxxxx>
---
  arch/arm64/boot/dts/ti/k3-am69-sk.dts | 85 +++++++++++++++++++++++++++
  1 file changed, 85 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
index 370980eb59b0..feb571a5a0f5 100644
--- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
@@ -29,6 +29,10 @@ aliases {
  		i2c0 = &wkup_i2c0;
  		i2c3 = &main_i2c0;
  		ethernet0 = &mcu_cpsw_port1;
+		can0 = &mcu_mcan0;
+		can1 = &mcu_mcan1;
+		can2 = &main_mcan6;
+		can3 = &main_mcan7;


AFAIK, can sub system does not support aliasing.

IMO, you can remove these.


  	};
memory@80000000 {
@@ -321,6 +325,31 @@ tfp410_out: endpoint {
  			};
  		};
  	};
+
+	transceiver1: can-phy0 {
+		compatible = "ti,tcan1042";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+	};
+
+	transceiver2: can-phy1 {
+		compatible = "ti,tcan1042";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+	};
+
+	transceiver3: can-phy2 {
+		compatible = "ti,tcan1042";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+	};
+
+	transceiver4: can-phy3 {
+		compatible = "ti,tcan1042";
+		#phy-cells = <0>;
+		max-bitrate = <5000000>;
+	};
+
  };
&main_pmx0 {
@@ -429,6 +458,20 @@ hdmi_hpd_pins_default: hdmi-hpd-default-pins {
  			J784S4_IOPAD(0x000, PIN_INPUT, 7) /* (AN35) EXTINTN.GPIO0_0 */
  		>;
  	};
+
+	main_mcan6_pins_default: main-mcan6-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x098, PIN_INPUT, 0) /* (AH36) MCAN6_RX */
+			J784S4_IOPAD(0x094, PIN_OUTPUT, 0) /* (AG35) MCAN6_TX */
+		>;
+	};
+
+	main_mcan7_pins_default: main-mcan7-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x0A0, PIN_INPUT, 0) /* (AD34) MCAN7_RX */
+			J784S4_IOPAD(0x09C, PIN_OUTPUT, 0) /* (AF35) MCAN7_TX */
+		>;
+	};
  };
&wkup_pmx2 {
@@ -525,6 +568,20 @@ hdmi_pdn_pins_default: hdmi-pdn-default-pins {
  			J784S4_WKUP_IOPAD(0x090, PIN_INPUT, 7) /* (H37) WKUP_GPIO0_14 */
  		>;
  	};
+
+	mcu_mcan0_pins_default: mcu-mcan0-default-pins {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x054, PIN_INPUT, 0) /* (F38) MCU_MCAN0_RX */
+			J784S4_WKUP_IOPAD(0x050, PIN_OUTPUT, 0) /* (K33) MCU_MCAN0_TX */
+		>;
+	};
+
+	mcu_mcan1_pins_default: mcu-mcan1-default-pins {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x06c, PIN_INPUT, 0) /* (K36) WKUP_GPIO0_5.MCU_MCAN1_RX */
+			J784S4_WKUP_IOPAD(0x068, PIN_OUTPUT, 0)/* (H35) WKUP_GPIO0_4.MCU_MCAN1_TX */
+		>;
+	};
  };
&wkup_pmx3 {
@@ -988,3 +1045,31 @@ dp0_out: endpoint {
  		};
  	};
  };
+
+&mcu_mcan0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_mcan0_pins_default>;
+	phys = <&transceiver1>;
+};
+
+&mcu_mcan1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_mcan1_pins_default>;
+	phys = <&transceiver2>;
+};
+
+&main_mcan6 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mcan6_pins_default>;
+	phys = <&transceiver3>;
+};
+
+&main_mcan7 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mcan7_pins_default>;
+	phys = <&transceiver4>;
+};




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