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- From 312753d0aadba0f58841ae513b80fdbabc887523 Mon Sep 17 00:00:00 2001
- From: Chukun Pan <[email protected]>
- Date: Wed, 8 Feb 2023 16:32:18 +0800
- Subject: [PATCH] net: phy: realtek: support switching between SGMII and
- 2500BASE-X for RTL822x series
- After commit ace6aba ("net: phy: realtek: rtl8221: allow to configure
- SERDES mode"), the rtl8221 phy can work in SGMII and 2500base-x modes
- respectively. So add interface automatic switching for rtl8221 phy to
- match various wire speeds.
- Signed-off-by: Chukun Pan <[email protected]>
- ---
- drivers/net/phy/realtek.c | 26 ++++++++++++++++++++++++--
- 1 file changed, 24 insertions(+), 2 deletions(-)
- --- a/drivers/net/phy/realtek.c
- +++ b/drivers/net/phy/realtek.c
- @@ -714,6 +714,25 @@ static int rtl822x_config_aneg(struct ph
- return __genphy_config_aneg(phydev, ret);
- }
-
- +static void rtl822x_update_interface(struct phy_device *phydev)
- +{
- + /* Automatically switch SERDES interface between
- + * SGMII and 2500-BaseX according to speed.
- + */
- + switch (phydev->speed) {
- + case SPEED_2500:
- + phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
- + break;
- + case SPEED_1000:
- + case SPEED_100:
- + case SPEED_10:
- + phydev->interface = PHY_INTERFACE_MODE_SGMII;
- + break;
- + default:
- + break;
- + }
- +}
- +
- static int rtl822x_read_status(struct phy_device *phydev)
- {
- int ret;
- @@ -732,11 +751,14 @@ static int rtl822x_read_status(struct ph
- phydev->lp_advertising, lpadv & RTL_LPADV_2500FULL);
- }
-
- - ret = genphy_read_status(phydev);
- + ret = rtlgen_read_status(phydev);
- if (ret < 0)
- return ret;
-
- - return rtlgen_get_speed(phydev);
- + if (phydev->is_c45 && phydev->link)
- + rtl822x_update_interface(phydev);
- +
- + return 0;
- }
-
- static bool rtlgen_supports_2_5gbps(struct phy_device *phydev)
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