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realtek: dsa,pcs: rtl931x: let PCS driver setup SerDes

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Remove SerDes initialization/configuration calls from the DSA driver in
'rtl931x_phylink_mac_config' and let our PCS driver setup the SerDes now
that the driver is able to do that.

pcs_config of the PCS driver is automatically called by phylink, thus
there's no need to call it on our own.

Note that in rtl931x_phylink_mac_config the MAC is enabled before
pcs_config is called. While this seems to work, it isn't good and needs
to be fixed.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/20369
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Jonas Jelonek 2025-10-08 14:21:57 +00:00 committed by Hauke Mehrtens
parent 8bdc3d1b56
commit 4a5de35dba
2 changed files with 2 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c
View File

@ -692,52 +692,11 @@ static void rtl931x_phylink_mac_config(struct dsa_switch *ds, int port,
{
struct rtl838x_switch_priv *priv = ds->priv;
int sds_num;
u32 reg, band;
u32 reg;
sds_num = priv->ports[port].sds_num;
pr_info("%s: speed %d sds_num %d\n", __func__, state->speed, sds_num);
switch (state->interface) {
case PHY_INTERFACE_MODE_1000BASEX:
band = rtl931x_sds_cmu_band_get(sds_num, PHY_INTERFACE_MODE_1000BASEX);
rtl931x_sds_init(sds_num, PHY_INTERFACE_MODE_1000BASEX);
break;
case PHY_INTERFACE_MODE_XGMII:
band = rtl931x_sds_cmu_band_get(sds_num, PHY_INTERFACE_MODE_XGMII);
rtl931x_sds_init(sds_num, PHY_INTERFACE_MODE_XGMII);
break;
case PHY_INTERFACE_MODE_10GBASER:
case PHY_INTERFACE_MODE_10GKR:
band = rtl931x_sds_cmu_band_get(sds_num, PHY_INTERFACE_MODE_10GBASER);
rtl931x_sds_init(sds_num, PHY_INTERFACE_MODE_10GBASER);
break;
case PHY_INTERFACE_MODE_USXGMII:
/*
* TODO: USXGMII is currently the swiss army knife to declare 10G
* multi port PHYs. Real devices use other modes instead. Especially
*
* - RTL8224 is driven in 10G_QXGMII
* - RTL8218D/E are driven in (Realtek proprietary) XSGMII (10G SGMII)
*
* For now disable all USXGMII SerDes handling and rely on U-Boot setup.
*/
break;
case PHY_INTERFACE_MODE_SGMII:
pr_info("%s setting mode PHY_INTERFACE_MODE_SGMII\n", __func__);
band = rtl931x_sds_cmu_band_get(sds_num, PHY_INTERFACE_MODE_SGMII);
rtl931x_sds_init(sds_num, PHY_INTERFACE_MODE_SGMII);
band = rtl931x_sds_cmu_band_set(sds_num, true, 62, PHY_INTERFACE_MODE_SGMII);
break;
case PHY_INTERFACE_MODE_QSGMII:
band = rtl931x_sds_cmu_band_get(sds_num, PHY_INTERFACE_MODE_QSGMII);
rtl931x_sds_init(sds_num, PHY_INTERFACE_MODE_QSGMII);
break;
default:
pr_err("%s: unknown serdes mode: %s\n",
__func__, phy_modes(state->interface));
return;
}
reg = sw_r32(priv->r->mac_force_mode_ctrl(port));
pr_info("%s reading FORCE_MODE_CTRL: %08x\n", __func__, reg);
@ -755,7 +714,6 @@ static void rtl931x_phylink_mac_config(struct dsa_switch *ds, int port,
reg |= RTL931X_DUPLEX_MODE;
sw_w32(reg, priv->r->mac_force_mode_ctrl(port));
}
static void rtl93xx_phylink_mac_config(struct dsa_switch *ds, int port,

1
target/linux/realtek/files-6.12/drivers/net/pcs/pcs-rtl-otto.c
View File

@ -1069,6 +1069,7 @@ static const struct rtpcs_config rtpcs_931x_cfg = {
.mac_tx_pause_sts = RTPCS_931X_MAC_TX_PAUSE_STS,
.pcs_ops = &rtpcs_931x_pcs_ops,
.set_autoneg = rtpcs_93xx_set_autoneg,
.setup_serdes = rtpcs_931x_setup_serdes,
};
static const struct of_device_id rtpcs_of_match[] = {