linux-kernel - Re: [PATCH v6 3/3] arm64: dts: imx93: Add Engicam i.Core MX93 EDIMM 2.0 Starter Kit

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Date: Fri, 26 Apr 2024 17:59:39 +0200
From: Michael Nazzareno Trimarchi <michael@...rulasolutions.com>
To: Fabio Estevam <festevam@...il.com>
Cc: Fabio Aiuto <fabio.aiuto@...icam.com>, Shawn Guo <shawnguo@...nel.org>, 
	Sascha Hauer <s.hauer@...gutronix.de>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Rob Herring <robh@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org, imx@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	Matteo Lisi <matteo.lisi@...icam.com>, Mirko Ardinghi <mirko.ardinghi@...icam.com>, 
	Peng Fan <peng.fan@....com>
Subject: Re: [PATCH v6 3/3] arm64: dts: imx93: Add Engicam i.Core MX93 EDIMM
 2.0 Starter Kit

Hi

On Fri, Apr 26, 2024 at 5:56 PM Fabio Estevam <festevam@...il.com> wrote:
>
> Hi Fabio,
>
> On Fri, Apr 26, 2024 at 12:31 PM Fabio Aiuto <fabio.aiuto@...icamcom> wrote:
>
> > +&usdhc3 { /* WiFi */
> > +       #address-cells = <1>;
> > +       #size-cells = <0>;
> > +       pinctrl-names = "default", "state_100mhz", "state_200mhz";
> > +       pinctrl-0 = <&pinctrl_usdhc3>;
> > +       pinctrl-1 = <&pinctrl_usdhc3>;
> > +       pinctrl-2 = <&pinctrl_usdhc3>;
> > +       mmc-pwrseq = <&usdhc3_pwrseq>;
> > +       bus-width = <4>;
> > +       no-1-8-v;
> > +       non-removable;
> > +       max-frequency = <25000000>;
>
> Is this 25MHz limitation correct?

This make the wifi a bit slow ;). You should be able to go to ~50Mhz at
3.3v. BTW the other mux
are not needed "state_100mhz", "state_200mhz";

Sorry both Fabio, I did not see before

Michael


Michael




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