Config:

CONFIG_ARM=y
CONFIG_ARCH_SUNXI=y
CONFIG_MACH_SUN50I_H5=y
CONFIG_DRAM_CLK=504
CONFIG_DRAM_ZQ=3881977
CONFIG_MACPWR="PD6"
CONFIG_DEFAULT_DEVICE_TREE="sun50i-h5-nanopi-neo-core2"
# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
CONFIG_SPL=y
CONFIG_SPL_I2C_SUPPORT=y
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_FPGA is not set
# CONFIG_SPL_DOS_PARTITION is not set
# CONFIG_SPL_ISO_PARTITION is not set
# CONFIG_SPL_EFI_PARTITION is not set
CONFIG_SUN8I_EMAC=y
CONFIG_SY8106A_POWER=y
CONFIG_USB_EHCI_HCD=y
CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE=y
CONFIG_MMC_SUNXI_SLOT_EXTRA=2
CONFIG_OF_LIBFDT_OVERLAY=y


Changes to board/sunxi/board.c:

#ifdef CONFIG_MACPWR
	macpwr_pin = sunxi_name_to_gpio(CONFIG_MACPWR);
	printf("PHY Power Pin = %d\n", macpwr_pin);
	ret = gpio_request(macpwr_pin, "macpwr");
	printf("gpio_request ret %d\n", ret);
	ret = gpio_direction_output(macpwr_pin, 1);
	printf("gpio_direction_output ret %d\n", ret);
#endif

Boot output:

PHY Power Pin = -22
gpio_request ret -2
gpio_direction_output ret -2