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net: thunderx: use proper interface type for RGMII

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The configuration of the OCTEONTX XCV_DLL_CTL register via
xcv_init_hw() is such that the RGMII RX delay is bypassed
leaving the RGMII TX delay enabled in the MAC:

	/* Configure DLL - enable or bypass
	 * TX no bypass, RX bypass
	 */
	cfg = readq_relaxed(xcv->reg_base + XCV_DLL_CTL);
	cfg &= ~0xFF03;
	cfg |= CLKRX_BYP;
	writeq_relaxed(cfg, xcv->reg_base + XCV_DLL_CTL);

This would coorespond to a interface type of PHY_INTERFACE_MODE_RGMII_RXID
and not PHY_INTERFACE_MODE_RGMII.

Fixing this allows RGMII PHY drivers to do the right thing (enable
RX delay in the PHY) instead of erroneously enabling both delays in the
PHY.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tim Harvey 2020-02-07 12:40:26 -08:00 committed by David S. Miller
parent c76b305c23
commit 29ca3b3175
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/cavium/thunder/thunder_bgx.c
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@ -1039,7 +1039,7 @@ static int phy_interface_mode(u8 lmac_type)
if (lmac_type == BGX_MODE_QSGMII)
return PHY_INTERFACE_MODE_QSGMII;
if (lmac_type == BGX_MODE_RGMII)
return PHY_INTERFACE_MODE_RGMII;
return PHY_INTERFACE_MODE_RGMII_RXID;
return PHY_INTERFACE_MODE_SGMII;
}