On Sat, 16 Jan 2021 10:12:21 +0100 Jan Kiszka wrote:

On 06.11.20 10:43, Wong Vee Khee wrote:

quoted

From: Voon Weifeng <redacted>

Set all EHL/TGL phy_addr to -1 so that the driver will automatically
detect it at run-time by probing all the possible 32 addresses.

Signed-off-by: Voon Weifeng <redacted>
Signed-off-by: Wong Vee Khee <redacted>

This fixes PHY detection on one of our EHL-based boards. Can this also
be applied to stable 5.10?

Sure.

Greg, we'd like to request a backport of the following commit to 5.10.

commit bff6f1db91e330d7fba56f815cdbc412c75fe163
Author: Voon Weifeng [off-list ref]
Date:   Fri Nov 6 17:43:41 2020 +0800

    stmmac: intel: change all EHL/TGL to auto detect phy addr
    
    Set all EHL/TGL phy_addr to -1 so that the driver will automatically
    detect it at run-time by probing all the possible 32 addresses.
    
    Signed-off-by: Voon Weifeng [off-list ref]
    Signed-off-by: Wong Vee Khee [off-list ref]
    Link: https://lore.kernel.org/r/20201106094341.4241-1-vee.khee.wong@intel.com (local)
    Signed-off-by: Jakub Kicinski [off-list ref]


It's relatively small, and Jan reports it makes his boards detect the
PHY. The change went in via -next and into Linus's tree during the 5.11
merge window.

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