> Hi Igor > > Is the Atlantic a combined MAC and PHY in one silicon, or are there > two devices? Could the Atlantic MAC be used in combination with for > example a Marvell PHY?
Hi Andrew, No it can't. This is a monolitic MAC+Phy solution. We do have MAC only NIC (AQC100 with SFP+ connector) - but even there SFP Phy is controlled by MAC firmware and this is totally transparent for driver/OS. >> + aq_mdio_write_word(aq_hw, mmd, address, data); >> + hw_atl_reg_glb_cpu_sem_set(aq_hw, 1U, HW_ATL_FW_SM_MDIO); >> +} > > You have here the code needed to implement a real Linux MDIO bus > driver. Are the MDIO pins exposed? Could somebody combine the chip > with say a Marvell Ethernet switch? You then need access to the MDIO > bus to control the switch. So by using a Linux MDIO bus driver, you > make it easy for somebody to do that. You can keep with your firmware > mostly driving the PHY. No, these are not exposed as far as I know. Therefore it makes no sense to expose that to linux. >> + aq_hw->phy_id = HW_ATL_PHY_ID_MAX; >> + return false; >> + } > > For future proofing, should you not check it is actually one of your > PHYs? I don't think that makes sense, since that'll always be a hardcoded mac/phy pair. Regards, Igor
