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SubjectRe: [PATCH v2 1/8] arm64: dts: imx8mm-nitrogen-r2: add wifi/bt chip
On Fri, Feb 19, 2021 at 03:03:55PM +0100, Adrien Grassein wrote:
> Le ven. 19 févr. 2021 à 14:18, Krzysztof Kozlowski <krzk@kernel.org> a écrit :
> >
> > On Wed, Feb 17, 2021 at 05:10:45PM +0100, Adrien Grassein wrote:
> > > Add usdhc3 description which corresponds to the wifi/bt chip
> > >
> > > Signed-off-by: Adrien Grassein <adrien.grassein@gmail.com>
> > > ---
> > > .../boot/dts/freescale/imx8mm-nitrogen-r2.dts | 31 +++++++++++++++++++
> > > 1 file changed, 31 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts b/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
> > > index c0c384d76147..212dc9e5e85d 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
> > > @@ -9,6 +9,17 @@
> > > / {
> > > model = "Boundary Devices i.MX8MMini Nitrogen8MM Rev2";
> > > compatible = "boundary,imx8mm-nitrogen8mm", "fsl,imx8mm";
> > > +
> > > + reg_wlan_vmmc: regulator-wlan-vmmc {
> > > + compatible = "regulator-fixed";
> > > + pinctrl-names = "default";
> > > + pinctrl-0 = <&pinctrl_reg_wlan_vmmc>;
> > > + regulator-name = "reg_wlan_vmmc";
> > > + regulator-min-microvolt = <3300000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + gpio = <&gpio3 20 GPIO_ACTIVE_HIGH>;
> > > + enable-active-high;
> > > + };
> > > };
> > >
> > > &A53_0 {
> > > @@ -206,6 +217,20 @@ &usdhc2 {
> > > status = "okay";
> > > };
> > >
> > > +/* wlan */
> > > +&usdhc3 {
> > > + bus-width = <4>;
> > > + sdhci-caps-mask = <0x2 0x0>;
> > > + non-removable;
> > > + pinctrl-names = "default", "state_100mhz", "state_200mhz";
> > > + pinctrl-0 = <&pinctrl_usdhc3>;
> > > + pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
> > > + pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
> > > + vmmc-supply = <&reg_wlan_vmmc>;
> > > + vqmmc-1-8-v;
> >
> > There is no such property in the bindings.
> >
>
> Sorry, I copied a property from the FSL kernel.
> I will fix this with a "fixed-regulator".

I would assume this goes from PMIC, so check your schematics. There is
little point in adding a fixed regulator which is non-controllable.
I think bindings don't require it.

Best regards,
Krzysztof

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