Mason <slash.tmp@xxxxxxx> writes: > Hello everyone, > > I'm working on a SoC which embeds an IP block from Synopsys labeled > Synopsys DesignWare Cores Serial ATA AHCI Core, aka DWC_ahsata > (DWC SATA AHCI Host 6Gb/s AXI Interface). > > Would the sata_dwc_460ex driver support this DWC_ahsata hardware? > > I suppose I would also need to enable AHCI support, right? > > What is the difference between SATA_AHCI and SATA_AHCI_PLATFORM ? > > SATA_AHCI = 971db06e09231 > SATA_AHCI_PLATFORM = 1c2a49f61785e > > If I understand correctly, SATA_AHCI is for platforms with a PCI bus, > while SATA_AHCI_PLATFORM is for other platforms. I probably want the > latter then? > > On the analog side, the SATA PHY is also made by Synopsys. > Do I need to enable a specific driver? > I didn't see anything relevant in drivers/phy > > (The documentation mentions 11 registers for tweaking the controller, > but maybe it's the boot-loader's job to set this up correctly?) The sata_dwc_460ex driver can be made to work with the tango3/4 chips. You need a dmaengine driver (I've written one for tango3, needs slight tweaking for tango4) and some additions to the SATA driver to handle the DMA glue logic (I have unpublished code for this as well). There are a bunch of fixes for the SATA driver currently in linux-next, and I was planning to take another look at supporting tango3/4 once these hit mainline (4.7-rc1 most likely). A driver for the PHY is probably a good idea, even if the boot loader does some configuration, since this allows it to be powered down when not in use. -- Måns Rullgård -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
