diff options
| author | Nicolai Buchwitz <nb@tipi-net.de> | 2026-03-04 13:54:31 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-06 05:56:48 +0300 |
| commit | 92ba3307431a1756a3c8094787527a38ce19623d (patch) | |
| tree | 59f2748c6cf27ee5bf29227d017b361818959e7f /drivers | |
| parent | 61332b78761cb1638e2bf29273050cf009fbbc0e (diff) | |
| download | linux-92ba3307431a1756a3c8094787527a38ce19623d.tar.xz | |
net: cadence: macb: enable EEE for Raspberry Pi RP1
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: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Reviewed-by: Théo Lebrun <theo.lebrun@bootlin.com>
Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>
Link: https://patch.msgid.link/20260304105432.631186-5-nb@tipi-net.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb_main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index f01366394cff..5933a5042bc8 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -5537,7 +5537,8 @@ static const struct macb_config eyeq5_config = { static const struct macb_config raspberrypi_rp1_config = { .caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_CLK_HW_CHG | MACB_CAPS_JUMBO | - MACB_CAPS_GEM_HAS_PTP, + MACB_CAPS_GEM_HAS_PTP | + MACB_CAPS_EEE, .dma_burst_length = 16, .clk_init = macb_clk_init, .init = macb_init, |