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Pull Request - lan743x driver commits for 26.04-linux-nvidia #416

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dthompso wants to merge 3 commits into from
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Pull Request - lan743x driver commits for 26.04-linux-nvidia #416

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7ef6335
net: microchip: lan743x: add ethtool nway_reset support
nbuchwitz Feb 23, 2026
8d419af
net: lan743x: fix SGMII detection on PCI1xxxx B0+ during warm reset
Thangaraj-Samynathan Mar 18, 2026
3848cff
net: lan743x: rename chip_rev to fpga_rev
Thangaraj-Samynathan Apr 10, 2026
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8 changes: 8 additions & 0 deletions drivers/net/ethernet/microchip/lan743x_ethtool.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1079,6 +1079,13 @@ static int lan743x_ethtool_set_eee(struct net_device *netdev,
return phylink_ethtool_set_eee(adapter->phylink, eee);
}

static int lan743x_ethtool_nway_reset(struct net_device *netdev)
{
struct lan743x_adapter *adapter = netdev_priv(netdev);

return phylink_ethtool_nway_reset(adapter->phylink);
}

static int
lan743x_ethtool_set_link_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *cmd)
Expand Down Expand Up @@ -1369,6 +1376,7 @@ const struct ethtool_ops lan743x_ethtool_ops = {
.set_rxfh = lan743x_ethtool_set_rxfh,
.get_rxfh_fields = lan743x_ethtool_get_rxfh_fields,
.get_ts_info = lan743x_ethtool_get_ts_info,
.nway_reset = lan743x_ethtool_nway_reset,
.get_eee = lan743x_ethtool_get_eee,
.set_eee = lan743x_ethtool_set_eee,
.get_link_ksettings = lan743x_ethtool_get_link_ksettings,
Expand Down
23 changes: 15 additions & 8 deletions drivers/net/ethernet/microchip/lan743x_main.c
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Expand Up @@ -28,9 +28,15 @@

#define RFE_RD_FIFO_TH_3_DWORDS 0x3

static bool pci11x1x_is_a0(struct lan743x_adapter *adapter)
{
u32 dev_rev = adapter->csr.id_rev & ID_REV_CHIP_REV_MASK_;
return dev_rev == ID_REV_CHIP_REV_PCI11X1X_A0_;
}

static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter)
{
u32 chip_rev;
u32 fpga_rev;
u32 cfg_load;
u32 hw_cfg;
u32 strap;
Expand All @@ -47,18 +53,19 @@ static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter)
cfg_load = lan743x_csr_read(adapter, ETH_SYS_CONFIG_LOAD_STARTED_REG);
lan743x_hs_syslock_release(adapter);
hw_cfg = lan743x_csr_read(adapter, HW_CFG);

if (cfg_load & GEN_SYS_LOAD_STARTED_REG_ETH_ ||
hw_cfg & HW_CFG_RST_PROTECT_) {
strap = lan743x_csr_read(adapter, STRAP_READ);
strap = lan743x_csr_read(adapter, STRAP_READ);
if ((pci11x1x_is_a0(adapter) &&
(cfg_load & GEN_SYS_LOAD_STARTED_REG_ETH_ ||
hw_cfg & HW_CFG_RST_PROTECT_)) ||
(strap & STRAP_READ_USE_SGMII_EN_)) {
if (strap & STRAP_READ_SGMII_EN_)
adapter->is_sgmii_en = true;
else
adapter->is_sgmii_en = false;
} else {
chip_rev = lan743x_csr_read(adapter, FPGA_REV);
if (chip_rev) {
if (chip_rev & FPGA_SGMII_OP)
fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
if (fpga_rev) {
if (fpga_rev & FPGA_SGMII_OP)
adapter->is_sgmii_en = true;
else
adapter->is_sgmii_en = false;
Expand Down
1 change: 1 addition & 0 deletions drivers/net/ethernet/microchip/lan743x_main.h
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Expand Up @@ -27,6 +27,7 @@
#define ID_REV_CHIP_REV_MASK_ (0x0000FFFF)
#define ID_REV_CHIP_REV_A0_ (0x00000000)
#define ID_REV_CHIP_REV_B0_ (0x00000010)
#define ID_REV_CHIP_REV_PCI11X1X_A0_ (0x000000A0)
#define ID_REV_CHIP_REV_PCI11X1X_B0_ (0x000000B0)

#define FPGA_REV (0x04)
Expand Down
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