linux-kernel - [PATCH] arm64: dts: qcom: qrb5165-rb5: Add support for MCP2518FD

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Date:   Fri, 27 Nov 2020 23:00:44 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dmitry.baryshkov@...aro.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH] arm64: dts: qcom: qrb5165-rb5: Add support for MCP2518FD

Add support for onboard MCP2518FD SPI CAN transceiver attached to SPI0
of RB5.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
index d9f52703ba2a..ce22d4fa383e 100644
--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
+++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
@@ -25,6 +25,13 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	/* Fixed crystal oscillator dedicated to MCP2518FD */
+	clk40M: can_clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <40000000>;
+	};
+
 	dc12v: dc12v-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "DC12V";
@@ -493,6 +500,16 @@ &sdhc_2 {
 /* CAN */
 &spi0 {
 	status = "okay";
+
+	can@0 {
+		compatible = "microchip,mcp2518fd";
+		reg = <0>;
+		clocks = <&clk40M>;
+		interrupts-extended = <&tlmm 15 IRQ_TYPE_LEVEL_LOW>;
+		spi-max-frequency = <10000000>;
+		vdd-supply = <&vdc_5v>;
+		xceiver-supply = <&vdc_5v>;
+	};
 };
 
 &tlmm {
-- 
2.25.1