[PATCH v2 3/3] arm64: dts: qcom: qcs6490-rb3gen2: Enable CAN bus controller

[Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>]

Enable the MCP2518FD CAN controller on the QCS6490 RB3 Gen2 platform.
The controller is connected via SPI3 and uses a 40 MHz oscillator.

The setup was tested with CAN-FD loopback and actual data transfer
using an external PCAN-USB FD adapter.

Signed-off-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
---
v1 -> v2:

- Drop the gpio-hog property.
- Add the microchip,xstbyen property to enable transceiver standby control.

v1 Link: https://lore.kernel.org/all/20260108125200.2803112-3-viken.dadhaniya@oss.qualcomm.com/
---
---
 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 22 ++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index e3d2f01881ae..245961722f84 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -44,6 +44,14 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	clocks {
+		mcp2518fd_osc: can-clk {
+			compatible = "fixed-clock";
+			clock-frequency = <40000000>;
+			#clock-cells = <0>;
+		};
+	};
+
 	dp-connector {
 		compatible = "dp-connector";
 		label = "DP";
@@ -1151,6 +1159,20 @@ platform {
 	};
 };
 
+&spi3 {
+	status = "okay";
+
+	can@0 {
+		compatible = "microchip,mcp2518fd";
+		reg = <0>;
+		interrupts-extended = <&tlmm 7 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&mcp2518fd_osc>;
+		spi-max-frequency = <10000000>;
+		vdd-supply = <&vreg_l11c_2p8>;
+		microchip,xstbyen;
+	};
+};
+
 &swr2 {
 	status = "okay";
 
-- 
2.34.1