RE: [PATCH 4/8] ARM: dts: iwg22d: Enable SDHI0 controller

[Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>]

Hello Simon, Geert

thank you for your patience on this one. We found out that there is an HW issue on SDHI0 , SDHC_CD# and SDHC_CMD (on the carrier board) are pulled up to 3.3V, therefore we are dropping UHS on this interface, and as result we are dropping this patch. We will send a V2 shortly.

Thanks,
Fabrizio

> -----Original Message-----
> From: Simon Horman [mailto:horms@xxxxxxxxxxxx]
> Sent: 15 September 2017 09:06
> To: Chris Paterson <Chris.Paterson2@xxxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>; Mark Rutland <mark.rutland@xxxxxxx>; Magnus Damm <magnus.damm@xxxxxxxxx>;
> Russell King <linux@xxxxxxxxxxxxxxx>; Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>; devicetree@xxxxxxxxxxxxxxx; linux-renesas-
> soc@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 4/8] ARM: dts: iwg22d: Enable SDHI0 controller
>
> On Wed, Sep 13, 2017 at 06:05:37PM +0100, Chris Paterson wrote:
> > From: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
> >
> > Enable the SDHI0 controller on iWave RZ/G1E carrier board.
>
> ...
>
> > @@ -63,3 +88,15 @@
> >  micrel,led-mode = <1>;
> >  };
> >  };
> > +
> > +&sdhi0 {
> > +pinctrl-0 = <&sdhi0_pins>;
> > +pinctrl-1 = <&sdhi0_pins_uhs>;
> > +pinctrl-names = "default", "state_uhs";
> > +
> > +vmmc-supply = <&reg_3p3v>;
> > +vqmmc-supply = <&vccq_sdhi0>;
> > +cd-gpios = <&gpio6 6 GPIO_ACTIVE_LOW>;
>
> I take that the absence of a wp-gpio means that that this is a µSD slot.
> Could you help me by documenting this correctly on
> http://elinux.org/index.php?title=Renesas-MMC-Enabled-Speeds ?
>
> For some reason I thought that SDHI0 wasn't exposed at all, so I guess
> my reading of the documentation was incorrect.
>
>
> I think you also want sd-uhs-sdr50 here too.
> You can test it by removing the sd-uhs-sdr104 property.
>
> > +sd-uhs-sdr104;
> > +status = "okay";
> > +};
> > --
> > 1.9.1
> >



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