[PATCH net-next v6 07/15] net: ethernet: oa_tc6: Support for vendor specific MMS
From: Selvamani Rajagopal via B4 Relay <devnull+Selvamani.Rajagopal.onsemi.com@kernel.org>
Date: 2026-06-29 17:23:55
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b4-sent, linux-devicetree, linux-doc, lkml
Subsystem:
networking drivers, open alliance 10base-t1s macphy serial interface framework, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Parthiban Veerasooran, Linus Torvalds
From: Selvamani Rajagopal <redacted> OPEN Alliance 10BASE-T1x Serial Interface specification, table 6 allows vendors to use any memory map select (MMS) value between 10 and 15. This new API interface enables vendor to map one of thes MMS values to MDIO_MMD_VEND1. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Selvamani Rajagopal <redacted> --- changes in v6 - No change changes in v5 - no change changes in v4 - no change changes in v3 - no change changes in v2 - Moved the handling of vendor specific MMS mapping to separate patch - new patch --- drivers/net/ethernet/oa_tc6/oa_tc6.c | 21 ++++++++++++++++++--- include/linux/oa_tc6.h | 1 + 2 files changed, 19 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/oa_tc6/oa_tc6.c b/drivers/net/ethernet/oa_tc6/oa_tc6.c
index 6cc7c76d1d3c..0b8e29bbd703 100644
--- a/drivers/net/ethernet/oa_tc6/oa_tc6.c
+++ b/drivers/net/ethernet/oa_tc6/oa_tc6.c@@ -207,6 +207,18 @@ int oa_tc6_ioctl(struct oa_tc6 *tc6, struct ifreq *rq, int cmd) } EXPORT_SYMBOL_GPL(oa_tc6_ioctl); +/** + * oa_tc6_set_vend1_mms - Add vendor specific MDIO_MMD to OA TC6 MMS + * mapper value. + * @tc6: oa_tc6 struct. + * @mms: vendor defined MMS value for VEND1 mdio device. + */ +void oa_tc6_set_vend1_mms(struct oa_tc6 *tc6, int mms) +{ + tc6->vend1_mms = mms; +} +EXPORT_SYMBOL_GPL(oa_tc6_set_vend1_mms); + static __be32 oa_tc6_prepare_ctrl_header(u32 addr, u8 length, enum oa_tc6_register_op reg_op) {
@@ -460,7 +472,7 @@ static int oa_tc6_mdiobus_write(struct mii_bus *bus, int addr, int regnum, val); } -static int oa_tc6_get_phy_c45_mms(int devnum) +static int oa_tc6_get_phy_c45_mms(struct oa_tc6 *tc6, int devnum) { switch (devnum) { case MDIO_MMD_PCS:
@@ -473,6 +485,8 @@ static int oa_tc6_get_phy_c45_mms(int devnum) return OA_TC6_PHY_C45_AUTO_NEG_MMS5; case MDIO_MMD_POWER_UNIT: return OA_TC6_PHY_C45_POWER_UNIT_MMS6; + case MDIO_MMD_VEND1: + return tc6->vend1_mms; default: return -EOPNOTSUPP; }
@@ -485,7 +499,7 @@ static int oa_tc6_mdiobus_read_c45(struct mii_bus *bus, int addr, int devnum, u32 regval; int ret; - ret = oa_tc6_get_phy_c45_mms(devnum); + ret = oa_tc6_get_phy_c45_mms(tc6, devnum); if (ret < 0) return ret;
@@ -502,7 +516,7 @@ static int oa_tc6_mdiobus_write_c45(struct mii_bus *bus, int addr, int devnum, struct oa_tc6 *tc6 = bus->priv; int ret; - ret = oa_tc6_get_phy_c45_mms(devnum); + ret = oa_tc6_get_phy_c45_mms(tc6, devnum); if (ret < 0) return ret;
@@ -1332,6 +1346,7 @@ struct oa_tc6 *oa_tc6_init(struct spi_device *spi, struct net_device *netdev) SET_NETDEV_DEV(netdev, &spi->dev); mutex_init(&tc6->spi_ctrl_lock); spin_lock_init(&tc6->tx_skb_lock); + tc6->vend1_mms = -EOPNOTSUPP; tc6->tx_ts_idx = OA_TC6_TTSCA_REG_ID; INIT_LIST_HEAD(&tc6->tx_ts_skb_q);
diff --git a/include/linux/oa_tc6.h b/include/linux/oa_tc6.h
index 4047c22a366a..a89151267713 100644
--- a/include/linux/oa_tc6.h
+++ b/include/linux/oa_tc6.h@@ -47,5 +47,6 @@ void oa_tc6_get_ts_stats(struct oa_tc6 *tc6, struct ethtool_ts_stats *ts_stats); int oa_tc6_hwtstamp_set(struct oa_tc6 *tc6, struct kernel_hwtstamp_config *cfg); +void oa_tc6_set_vend1_mms(struct oa_tc6 *tc6, int mms); void oa_tc6_ptp_unregister(struct oa_tc6 *tc6); #endif /* _LINUX_OA_TC6_H */
--
2.43.0