> -----Original Message-----
> From: Russell King - ARM Linux admin <[email protected]>
> Sent: Wednesday, February 3, 2021 16:39
> To: Kostya Porotchkin <[email protected]>
> Cc: Baruch Siach <[email protected]>; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; Nadav Haklai <[email protected]>;
> [email protected]; Stefan Chulski <[email protected]>;
> [email protected]; Ben Peled <[email protected]>;
> [email protected]; [email protected]
> Subject: Re: [EXT] Re: [PATCH 02/11] dts: mvebu: Update A8K AP806 SDHCI
> settings
>
> On Wed, Feb 03, 2021 at 02:37:22PM +0000, Kostya Porotchkin wrote:
> > Hi, Baruch,
> >
> > > -----Original Message-----
> > > From: Baruch Siach <[email protected]>
> > > Sent: Wednesday, February 3, 2021 15:59
> > > To: Kostya Porotchkin <[email protected]>
> > > Cc: [email protected]; [email protected];
> > > [email protected]; [email protected]; [email protected];
> > > [email protected]; Nadav Haklai <[email protected]>;
> > > [email protected]; Stefan Chulski <[email protected]>;
> > > [email protected]; Ben Peled <[email protected]>;
> > > [email protected];
> > > [email protected]
> > > Subject: [EXT] Re: [PATCH 02/11] dts: mvebu: Update A8K AP806 SDHCI
> > > settings
> > >
> > > External Email
> > >
> > > --------------------------------------------------------------------
> > > --
> > > Hi Konstantin,
> > >
> > > On Wed, Feb 03 2021, [email protected] wrote:
> > > > From: Konstantin Porotchkin <[email protected]>
> > > >
> > > > Update the settings for AP806 SDHCI interface according to latest
> > > > Xenon drivers changes.
> > > > - no need to select the PHY slow mode anymore
> > >
> > > Why? Has anything changed since the introduction of
> > > marvell,xenon-phy-slow- mode?
> > [KP] AP806 B0, AP807 and later do not need the "slow mode" set by the
> default.
> > The HWE-7296210 errata is not applicable to these components and they
> > are able to run AP SDHCI in HS400 8-bit mode.
>
> So what about all those people, such as me, who have A0 silicon on their
> Macchiatobin boards?
>
> You can't just go around removing DT properties like this.
>
[KP] So for older systems this "slow mode" parameter could be set on the board
level.
When it is set in ap80x,dtsi file it downgrades all systems to HS-SDR52, even
if they support HS400 on AP side.
MacchiatoBIN AP eMMC is connected to 3.3v regulator and has "no-1-8-v" flag
set, so it should remain in low speed anyway.
> --
> RMK's Patch system: https://urldefense.proofpoint.com/v2/url?u=https-
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> rL4Q_voTqxrlYU6KKE&e=
> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
