diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index a3845edf0e48..ff48012c8046 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -28,6 +28,12 @@ #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; @@ -47,10 +53,11 @@ 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 diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h index 02a28b709163..160d94a7cee6 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.h +++ b/drivers/net/ethernet/microchip/lan743x_main.h @@ -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)