arm64: dts: ti: k3-am642-main: fix ports mac properties

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[ Upstream commit 50c9bfca1b ]

The current device tree CPSW3g node adds non-zero "mac-address" property to
the ports, which prevents random MAC address assignment to network devices
if bootloader failed to update DT. This may cause more then one host to
have the same MAC in the network.

 mac-address = [00 00 de ad be ef];
 mac-address = [00 01 de ad be ef];

In addition, there is one MAC address available in eFuse registers which
can be used for default port 1.

Hence, fix ports MAC properties by:
- resetting "mac-address" property to 0
- adding ti,syscon-efuse = <&main_conf 0x200> to Port 1

Fixes: 3753b12877 ("arm64: dts: ti: k3-am64-main: Add CPSW DT node")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20210608184940.25934-1-grygorii.strashko@ti.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Grygorii Strashko 2021-06-08 21:49:40 +03:00 • committed by Greg Kroah-Hartman

parent 5b47aec030

commit 6f62efde1a

1 changed files with 3 additions and 2 deletions

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arch/arm64/boot/dts/ti/k3-am64-main.dtsi

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