board: ti: am33xx: Add support for BeagleBoard Green Eco

SeeedStudio BeagleBone Green Eco (BBGE) is a clone of the BeagleBone Green
(BBG). It has minor differences from the BBG, such as a different PMIC,
a different Ethernet PHY, and a larger eMMC.

The PMIC is not yet supported in mainline, but the work is ongoing.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>

arch/arm/dts/Makefile

@@ -419,6 +419,7 @@ dtb-$(CONFIG_AM33XX) += \
 	am335x-evm.dtb \
 	am335x-evmsk.dtb \
 	am335x-bonegreen.dtb \
+	am335x-bonegreen-eco.dtb \
 	am335x-bonegreen-wireless.dtb \
 	am335x-icev2.dtb \
 	am335x-pocketbeagle.dtb \

arch/arm/dts/am335x-bonegreen-eco.dts

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2025 Bootlin
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bonegreen-common.dtsi"
+
+/ {
+	model = "TI AM335x BeagleBone Green Eco";
+	compatible = "ti,am335x-bone-green-eco", "ti,am335x-bone-green",
+		     "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	cpus {
+		cpu@0 {
+			/delete-property/ cpu0-supply;
+		};
+	};
+};
+
+&usb0 {
+	interrupts-extended = <&intc 18>;
+	interrupt-names = "mc";
+};
+
+&baseboard_eeprom {
+	/delete-property/ vcc-supply;
+};
+
+&i2c0 {
+	/delete-node/ tps@24;
+};

board/ti/am335x/board.c

@@ -307,6 +307,9 @@ const struct dpll_params *get_dpll_mpu_params(void)
 	if (board_is_pb() || board_is_bone_lt())
 		freq = MPUPLL_M_1000;
 
+	if (board_is_bbge())
+		freq = MPUPLL_M_600;
+
 	switch (freq) {
 	case MPUPLL_M_1000:
 		return &dpll_mpu_opp[ind][5];
@@ -823,6 +826,8 @@ int board_late_init(void)
 
 	if (board_is_bbg1())
 		name = "BBG1";
+	if (board_is_bbge())
+		name = "BBGE";
 	if (board_is_bben()) {
 		char subtype_id = board_ti_get_config()[1];
 
@@ -955,7 +960,7 @@ int board_fit_config_name_match(const char *name)
 		return 0;
 	else if (board_is_bone() && !strcmp(name, "am335x-bone"))
 		return 0;
-	else if (board_is_bone_lt() && !board_is_bbg1() &&
+	else if (board_is_bone_lt() && !board_is_bbg1() && !board_is_bbge() &&
 		 !strcmp(name, "am335x-boneblack"))
 		return 0;
 	else if (board_is_pb() && !strcmp(name, "am335x-pocketbeagle"))
@@ -964,6 +969,8 @@ int board_fit_config_name_match(const char *name)
 		return 0;
 	else if (board_is_bbg1() && !strcmp(name, "am335x-bonegreen"))
 		return 0;
+	else if (board_is_bbge() && !strcmp(name, "am335x-bonegreen-eco"))
+		return 0;
 	else if (board_is_icev2() && !strcmp(name, "am335x-icev2"))
 		return 0;
 	else if (board_is_bben()) {

board/ti/am335x/board.h

@@ -45,6 +45,11 @@ static inline int board_is_bbg1(void)
 	return board_is_bone_lt() && !strncmp(board_ti_get_rev(), "BBG1", 4);
 }
 
+static inline int board_is_bbge(void)
+{
+	return board_is_bone_lt() && !strncmp(board_ti_get_rev(), "BBGE", 4);
+}
+
 static inline int board_is_bben(void)
 {
 	return board_is_bone_lt() && !strncmp(board_ti_get_rev(), "SE", 2);

configs/am335x_evm_defconfig

@@ -52,7 +52,7 @@ CONFIG_MTDIDS_DEFAULT="nand0=nand.0"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=nand.0:128k(NAND.SPL),128k(NAND.SPL.backup1),128k(NAND.SPL.backup2),128k(NAND.SPL.backup3),256k(NAND.u-boot-spl-os),1m(NAND.u-boot),128k(NAND.u-boot-env),128k(NAND.u-boot-env.backup1),8m(NAND.kernel),-(NAND.file-system)"
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
-CONFIG_OF_LIST="am335x-evm am335x-bone am335x-sancloud-bbe am335x-sancloud-bbe-lite am335x-sancloud-bbe-extended-wifi am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle"
+CONFIG_OF_LIST="am335x-evm am335x-bone am335x-sancloud-bbe am335x-sancloud-bbe-lite am335x-sancloud-bbe-extended-wifi am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle am335x-bonegreen-eco"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y

configs/am335x_evm_spiboot_defconfig

@@ -41,7 +41,7 @@ CONFIG_CMD_MTDPARTS=y
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
-CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle"
+CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle am335x-bonegreen-eco"
 CONFIG_ENV_OVERWRITE=y
 # CONFIG_ENV_IS_IN_FAT is not set
 CONFIG_ENV_IS_IN_SPI_FLASH=y

configs/am335x_hs_evm_defconfig

@@ -39,7 +39,7 @@ CONFIG_MTDIDS_DEFAULT="nand0=nand.0"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=nand.0:128k(NAND.SPL),128k(NAND.SPL.backup1),128k(NAND.SPL.backup2),128k(NAND.SPL.backup3),256k(NAND.u-boot-spl-os),1m(NAND.u-boot),128k(NAND.u-boot-env),128k(NAND.u-boot-env.backup1),8m(NAND.kernel),-(NAND.file-system)"
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
-CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle"
+CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle am335x-bonegreen-eco"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y

configs/am335x_hs_evm_uart_defconfig

@@ -41,7 +41,7 @@ CONFIG_MTDIDS_DEFAULT="nand0=nand.0"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=nand.0:128k(NAND.SPL),128k(NAND.SPL.backup1),128k(NAND.SPL.backup2),128k(NAND.SPL.backup3),256k(NAND.u-boot-spl-os),1m(NAND.u-boot),128k(NAND.u-boot-env),128k(NAND.u-boot-env.backup1),8m(NAND.kernel),-(NAND.file-system)"
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
-CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle"
+CONFIG_OF_LIST="am335x-evm am335x-bone am335x-boneblack am335x-evmsk am335x-bonegreen am335x-icev2 am335x-pocketbeagle am335x-bonegreen-eco"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y

include/configs/am335x_evm.h

@@ -126,6 +126,8 @@
 			"setenv fdtfile am335x-bonegreen.dtb; fi; " \
 		"if test $board_name = BBGW; then " \
 			"setenv fdtfile am335x-bonegreen-wireless.dtb; fi; " \
+		"if test $board_name = BBGE; then " \
+			"setenv fdtfile am335x-bonegreen-eco.dtb; fi; " \
 		"if test $board_name = BBBL; then " \
 			"setenv fdtfile am335x-boneblue.dtb; fi; " \
 		"if test $board_name = BBEN; then " \