net: stmmac: sun8i: add support for Allwinner H616 EMAC1

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The H616 secondary EMAC uses a separate system-control clock register
and supports only RMII at 10/100 Mbps. It connects internally to the
co-packaged AC200 or AC300 EPHY and has no external PHY pins.

Add an EMAC1 variant using the dedicated register and enable only RMII.
Leave PHY initialization to the PHY driver instead of using the H3
internal-PHY controls. No RX or TX clock delays are configured for this
RMII-only variant.

Co-developed-by: Richard Genoud <richard.genoud@bootlin.com>
Signed-off-by: Richard Genoud <richard.genoud@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Tested-by: Alastair D'Silva <alastair@d-silva.org>
Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Link: https://patch.msgid.link/20260927-submit-h616-emac1-v1-v6-3-e64971f4e414@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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James Hilliard 2026-09-27 12:52:21 -06:00 • committed by Jakub Kicinski

parent 1cf9c2ac57

commit 61240e48a6

1 changed files with 16 additions and 0 deletions

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drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c

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