Re: [PATCH net-next v5 4/5] net: cadence: macb: enable EEE for Raspberry Pi RP1
From: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Date: 2026-02-28 13:31:47
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From: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Date: 2026-02-28 13:31:47
Also in:
lkml
On 2/27/26 17:06, Nicolai Buchwitz wrote:
Set MACB_CAPS_EEE for the Raspberry Pi 5 RP1 southbridge (Cadence GEM_GXL rev 0x00070109 paired with BCM54213PE PHY). EEE has been verified on RP1 hardware: the LPI counter registers at 0x270-0x27c return valid data, the TXLPIEN bit in NCR (bit 19) controls LPI transmission correctly, and ethtool --show-eee reports the negotiated state after link-up. Other GEM variants that share the same LPI register layout (SAMA5D2, SAME70, PIC32CZ) can be enabled by adding MACB_CAPS_EEE to their respective config entries once tested. Reviewed-by: Théo Lebrun<theo.lebrun@bootlin.com> Signed-off-by: Nicolai Buchwitz<redacted>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>