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board: ti: am33xx: Add Ethernet support for Beaglebone Green Eco

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Currently, the Ethernet interface of the BBGE board isn't properly
supported.

To support this interface, describe the MAC<->PHY RGMII link and the
DP83867 PHY in the BBGE device tree. Enable the DP83867 PHY driver in
U-Boot Proper and mux the relevant RGMII lines.

Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
Tested-by: Judith Mendez <jm@ti.com>
This commit is contained in:
Romain Gantois
2025-06-26 18:20:25 +02:00
committed by Tom Rini
parent 7eaa8aaa9a
commit 48b1f8a396
3 changed files with 23 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
arch/arm/dts/am335x-bonegreen-eco.dts
View File

@@ -7,6 +7,7 @@
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
#include "am335x-bonegreen-common.dtsi"
#include <dt-bindings/net/ti-dp83867.h>
/ {
model = "TI AM335x BeagleBone Green Eco";
@@ -25,6 +26,24 @@
interrupt-names = "mc";
};
&cpsw_emac0 {
phy-mode = "rgmii-id";
phy-handle = <&dp83867_0>;
};
&davinci_mdio {
/delete-node/ ethernet-phy@0;
dp83867_0: ethernet-phy@0 {
reg = <0>;
ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_50_NS>;
ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_50_NS>;
ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_8_B_NIB>;
ti,min-output-impedance;
ti,dp83867-rxctrl-strap-quirk;
};
};
&baseboard_eeprom {
/delete-property/ vcc-supply;
};

3
board/ti/am335x/mux.c
View File

@@ -408,6 +408,9 @@ void enable_board_pin_mux(void)
if (subtype_id == 'L')
configure_module_pin_mux(spi0_pin_mux);
} else if (board_is_bbge()) {
/* Beaglebone Green Eco pinmux */
configure_module_pin_mux(rgmii1_pin_mux);
} else {
/* Beaglebone LT pinmux */
configure_module_pin_mux(mii1_pin_mux);

1
configs/am335x_evm_defconfig
View File

@@ -91,6 +91,7 @@ CONFIG_SPI_FLASH_STMICRO=y
CONFIG_SPI_FLASH_WINBOND=y
CONFIG_PHY_ATHEROS=y
CONFIG_PHY_SMSC=y
CONFIG_PHY_TI_DP83867=y
CONFIG_PHY_GIGE=y
CONFIG_MII=y
CONFIG_DRIVER_TI_CPSW=y