On Wed, Dec 06, 2017 at 07:56:09PM +0100, Geert Uytterhoeven wrote:
> Hi Kaneko-san,
>
> On Wed, Dec 6, 2017 at 7:45 PM, Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx> wrote:
> > From: Khiem Nguyen <khiem.nguyen.xt@xxxxxxxxxxxxxxx>
> >
> > Because power of Salvator-X board is cut off in suspend,
> > it needs to reset SATA PHY state in resume.
> > Otherwise, SATA partition could not be accessed anymore.
>
> Thanks for your patch!
>
> So this is needed on R-Car Gen3 only.
>
> > --- a/drivers/ata/sata_rcar.c
> > +++ b/drivers/ata/sata_rcar.c
> > @@ -977,11 +977,43 @@ static int sata_rcar_resume(struct device *dev)
> > struct sata_rcar_priv *priv = host->private_data;
> > void __iomem *base = priv->base;
> > int ret;
> > + u32 val;
> >
> > ret = clk_prepare_enable(priv->clk);
> > if (ret)
> > return ret;
> >
> > + /* Re-use from sata_rcar_init_controller() */
> > + /* reset and setup phy */
> > + switch (priv->type) {
> > + case RCAR_GEN1_SATA:
> > + sata_rcar_gen1_phy_init(priv);
>
> Hence why do this (and the below) on R-Car Gen1, too?
>
> > + break;
> > + case RCAR_GEN2_SATA:
> > + sata_rcar_gen2_phy_init(priv);
>
> And on both R-Car Gen2 and Gen3 (currently Gen3 is treated like Gen2
> everywhere in the driver)?
> What about introducing RCAR_GEN3_SATA, and doing the reinit on R-Car Gen3
> only?
Agreed, that seems to make sense.
Kaneko-san, could you look into implementing this?
>
> > + break;
> > + default:
> > + dev_warn(host->dev, "SATA phy is not initialized\n");
> > + break;
> > + }
>
> [...]
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
>
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