> -----Original Message----- > From: Russell King - ARM Linux admin <linux@xxxxxxxxxxxxxxx> > Sent: Wednesday, February 3, 2021 16:39 > To: Kostya Porotchkin <kostap@xxxxxxxxxxx> > Cc: Baruch Siach <baruch@xxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; andrew@xxxxxxx; jaz@xxxxxxxxxxxx; > gregory.clement@xxxxxxxxxxx; Nadav Haklai <nadavh@xxxxxxxxxxx>; > robh+dt@xxxxxxxxxx; Stefan Chulski <stefanc@xxxxxxxxxxx>; > mw@xxxxxxxxxxxx; Ben Peled <bpeled@xxxxxxxxxxx>; > sebastian.hesselbarth@xxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > 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 <baruch@xxxxxxxxxx> > > > Sent: Wednesday, February 3, 2021 15:59 > > > To: Kostya Porotchkin <kostap@xxxxxxxxxxx> > > > Cc: linux-kernel@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; > > > andrew@xxxxxxx; jaz@xxxxxxxxxxxx; gregory.clement@xxxxxxxxxxx; > > > linux@xxxxxxxxxxxxxxx; Nadav Haklai <nadavh@xxxxxxxxxxx>; > > > robh+dt@xxxxxxxxxx; Stefan Chulski <stefanc@xxxxxxxxxxx>; > > > mw@xxxxxxxxxxxx; Ben Peled <bpeled@xxxxxxxxxxx>; > > > sebastian.hesselbarth@xxxxxxxxx; > > > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > > > Subject: [EXT] Re: [PATCH 02/11] dts: mvebu: Update A8K AP806 SDHCI > > > settings > > > > > > External Email > > > > > > -------------------------------------------------------------------- > > > -- > > > Hi Konstantin, > > > > > > On Wed, Feb 03 2021, kostap@xxxxxxxxxxx wrote: > > > > From: Konstantin Porotchkin <kostap@xxxxxxxxxxx> > > > > > > > > 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- > 3A__www.armlinux.org.uk_developer_patches_&d=DwIBAg&c=nKjWec2b6R0 > mOyPaz7xtfQ&r=- > N9sN4p5NSr0JGQoQ_2UCOgAqajG99W1EbSOww0WU8o&m=yMC9YPQXZUm > QPwlD7KCTVoVTPXCTQwTXD2yVsAo6sxA&s=OuBO2QArzHvV4k_vsNZdmSoDX > rL4Q_voTqxrlYU6KKE&e= > FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
