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rpi: Copy eth PHY address from fw DT to loaded DT

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Some Raspberry Pi 400 boards, specifically rev 1.1, have a different
address for the ethernet PHY device than what is provided by the kernel
DTB. The correct address is provided by the firmware, so we should carry
it over into the loaded device tree so that ethernet works on such boards.

Signed-off-by: Antoine Mazeas <antoine@karthanis.net>
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
This commit is contained in:
Antoine Mazeas 2022-08-19 10:56:46 +02:00 committed by Peter Robinson
parent 6d06424949
commit 4a45086c0c
1 changed files with 3 additions and 0 deletions
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3
board/raspberrypi/rpi/rpi.c
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@ -547,6 +547,9 @@ void update_fdt_from_fw(void *fdt, void *fw_fdt)
/* kernel address randomisation seed as provided by the firmware */
copy_property(fdt, fw_fdt, "/chosen", "kaslr-seed");
/* address of the PHY device as provided by the firmware */
copy_property(fdt, fw_fdt, "ethernet0/mdio@e14/ethernet-phy@1", "reg");
}
int ft_board_setup(void *blob, struct bd_info *bd)