Re: [PATCH v2 2/2] arm64: dts: ti: k3-am62a7: Add overlay for second CPSW3G Port

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On 29/04/24 10:54, Ravi Gunasekaran wrote:


On 4/25/24 3:50 PM, Chintan Vankar wrote:
From: Siddharth Vadapalli <s-vadapalli@xxxxxx>

The SK-Ethernet-DC01 Add-On Ethernet Card for AM62A7-SK board supports
RGMII mode.

Add overlay to enable the second CPSW3G port in RGMII-RXID mode with the
Add-On Ethernet Card.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx>
Signed-off-by: Chintan Vankar <c-vankar@xxxxxx>
---

Link to v1:
https://lore.kernel.org/r/20230424111945.3865240-3-s-vadapalli@xxxxxx/

Changes from v1 to v2:
- Since support for device tree overlays for am62a7-sk is already enabled
   by commit "635ed9715194", it is removed from this series.

  arch/arm64/boot/dts/ti/Makefile               |  3 +
  .../dts/ti/k3-am62a7-sk-ethernet-dc01.dtso    | 61 +++++++++++++++++++
  2 files changed, 64 insertions(+)
  create mode 100644 arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index c76b41f86527..8c55e46d9f98 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -27,6 +27,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb
# Boards with AM62Ax SoC
  dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk-ethernet-dc01.dtbo
# Boards with AM62Px SoC
  dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb
@@ -123,6 +124,8 @@ k3-am62a7-sk-csi2-ov5640-dtbs := k3-am62a7-sk.dtb \
  	k3-am62x-sk-csi2-ov5640.dtbo
  k3-am62a7-sk-csi2-tevi-ov5640-dtbs := k3-am62a7-sk.dtb \
  	k3-am62x-sk-csi2-tevi-ov5640.dtbo
+k3-am62a7-sk-ethernet-dc01-dtbs := k3-am62a7-sk.dtb \
+	k3-am62a7-sk-ethernet-dc01.dtbo
  k3-am62a7-sk-hdmi-audio-dtbs := k3-am62a7-sk.dtb k3-am62x-sk-hdmi-audio.dtbo
  k3-am62p5-sk-csi2-imx219-dtbs := k3-am62p5-sk.dtb \
  	k3-am62x-sk-csi2-imx219.dtbo
diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso b/arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso
new file mode 100644
index 000000000000..f6d5a089a717
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk-ethernet-dc01.dtso
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0

Please update the license to "GPL-2.0-only OR MIT"


I will update it in next version.

+/**
+ * DT Overlay for second CPSW3G port in RGMII mode using SK-ETHERNET-DC01
+ * Add-On Daughtercard with AM62A7-SK.
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/net/ti-dp83867.h>
+#include "k3-pinctrl.h"
+
+&{/} {
+	aliases {
+		ethernet1 = "/bus@f0000/ethernet@8000000/ethernet-ports/port@2";
+	};
+};
+
+&cpsw3g {
+	pinctrl-0 = <&main_rgmii1_pins_default>, <&main_rgmii2_pins_default>;


One entry per line like below

pinctrl-0 = <&main_rgmii1_pins_default>,
	    <&main_rgmii2_pins_default>;


Thanks Ravi for pointing out this, I will update this in next
version.

+};
+
+&cpsw_port2 {
+	status = "okay";
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&cpsw3g_phy1>;
+};
+
+&cpsw3g_mdio {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	cpsw3g_phy1: ethernet-phy@1 {
+		reg = <1>;
+		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
+		ti,min-output-impedance;
+	};
+};
+
+&main_pmx0 {
+	main_rgmii2_pins_default: main-rgmii2-default-pins {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x0184, PIN_INPUT, 0) /* (AA21) RGMII2_RD0 */
+			AM62AX_IOPAD(0x0188, PIN_INPUT, 0) /* (Y20) RGMII2_RD1 */
+			AM62AX_IOPAD(0x018c, PIN_INPUT, 0) /* (AB21) RGMII2_RD2 */
+			AM62AX_IOPAD(0x0190, PIN_INPUT, 0) /* (AB20) RGMII2_RD3 */
+			AM62AX_IOPAD(0x0180, PIN_INPUT, 0) /* (AA20) RGMII2_RXC */
+			AM62AX_IOPAD(0x017c, PIN_INPUT, 0) /* (W18) RGMII2_RX_CTL */
+			AM62AX_IOPAD(0x016c, PIN_INPUT, 0) /* (AA19) RGMII2_TD0 */
+			AM62AX_IOPAD(0x0170, PIN_INPUT, 0) /* (Y18) RGMII2_TD1 */
+			AM62AX_IOPAD(0x0174, PIN_INPUT, 0) /* (AA18) RGMII2_TD2 */
+			AM62AX_IOPAD(0x0178, PIN_INPUT, 0) /* (W17) RGMII2_TD3 */
+			AM62AX_IOPAD(0x0168, PIN_INPUT, 0) /* (AB19) RGMII2_TXC */
+			AM62AX_IOPAD(0x0164, PIN_INPUT, 0) /* (Y19) RGMII2_TX_CTL */
+		>;
+	};
+};





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