RE: [PATCH V4 12/14] arm64: dts: imx8mm-evk: Enable usdhc1 to support wifi

[Sherry Sun]

> -----Original Message-----
> From: Peng Fan <peng.fan@xxxxxxx>
> Sent: 2022年11月11日 17:08
> To: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>; Peng Fan (OSS)
> <peng.fan@xxxxxxxxxxx>
> Cc: shawnguo@xxxxxxxxxx; s.hauer@xxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; Sherry Sun <sherry.sun@xxxxxxx>;
> kernel@xxxxxxxxxxxxxx; festevam@xxxxxxxxx; linux-arm-
> kernel@xxxxxxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>
> Subject: RE: [PATCH V4 12/14] arm64: dts: imx8mm-evk: Enable usdhc1 to
> support wifi
> 
> Sherry,
> 
> > Subject: Re: [PATCH V4 12/14] arm64: dts: imx8mm-evk: Enable usdhc1 to
> > support wifi
> >
> > Hi Peng,
> >
> > On 22-11-11, Peng Fan (OSS) wrote:
> > > From: Sherry Sun <sherry.sun@xxxxxxx>
> > >
> > > Enable usdhc1 which is used for wifi.
> > >
> > > Signed-off-by: Sherry Sun <sherry.sun@xxxxxxx>
> > > Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
> > > ---
> > >  arch/arm64/boot/dts/freescale/imx8mm-evk.dts  | 27 +++++++++++++
> > > arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 39
> > +++++++++++++++++++
> > >  2 files changed, 66 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > index a2b24d4d4e3e..7b80f144327d 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > @@ -15,6 +15,13 @@ / {
> > >  	aliases {
> > >  		spi0 = &flexspi;
> > >  	};
> > > +
> > > +	usdhc1_pwrseq: usdhc1_pwrseq {
> > > +		compatible = "mmc-pwrseq-simple";
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&pinctrl_usdhc1_gpio>;
> > > +		reset-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
> > > +	};
> > >  };
> > >
> > >  &ddrc {
> > > @@ -53,6 +60,19 @@ flash@0 {
> > >  	};
> > >  };
> > >
> > > +&usdhc1 {
> > > +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
> > > +	pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_wlan>;
> > > +	pinctrl-1 = <&pinctrl_usdhc1_100mhz>, <&pinctrl_wlan>;
> > > +	pinctrl-2 = <&pinctrl_usdhc1_200mhz>, <&pinctrl_wlan>;
> > > +	bus-width = <4>;
> > > +	keep-power-in-suspend;
> > > +	mmc-pwrseq = <&usdhc1_pwrseq>;
> > > +	non-removable;
> > > +	wakeup-source;
> > > +	status = "okay";
> > > +};
> > > +
> > >  &usdhc3 {
> > >  	assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
> > >  	assigned-clock-rates = <400000000>; @@ -125,4 +145,11 @@
> > > MX8MM_IOMUXC_NAND_CLE_USDHC3_DATA7
> > 0x1d6
> > >  			MX8MM_IOMUXC_NAND_CE1_B_USDHC3_STROBE
> > 0x196
> > >  		>;
> > >  	};
> > > +
> > > +	pinctrl_wlan: wlangrp {
> > > +		fsl,pins = <
> > > +
> > 	MX8MM_IOMUXC_GPIO1_IO00_ANAMIX_REF_CLK_32K
> > 	0x141
> > > +			MX8MM_IOMUXC_SD1_DATA7_GPIO2_IO9
> > 	0x159
> > > +		>;
> > > +	};
> >
> > Out of curiousity, this is not shareable with the other ddr4 evk?
> [Peng Fan]
> 
> Could you please help answer?
> 

Hi Peng, I suggest to remove the pinctrl_wlan configure here, it should be added along with the wifi wowlan subnode later.

Best Regards
Sherry


> Thanks,
> Peng.
> 
> >
> > Regards,
> >   Marco
> >
> > >  };
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > > b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > > index 7d6317d95b13..ce450965e837 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > > @@ -559,6 +559,45 @@ MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX
> > 	0x140
> > >  		>;
> > >  	};
> > >
> > > +	pinctrl_usdhc1_gpio: usdhc1grpgpio {
> > > +		fsl,pins = <
> > > +			MX8MM_IOMUXC_SD1_RESET_B_GPIO2_IO10	0x41
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc1: usdhc1grp {
> > > +		fsl,pins = <
> > > +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK
> > 	0x190
> > > +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD
> > 	0x1d0
> > > +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0
> > 	0x1d0
> > > +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1
> > 	0x1d0
> > > +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2
> > 	0x1d0
> > > +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3
> > 	0x1d0
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> > > +		fsl,pins = <
> > > +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK
> > 	0x194
> > > +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD
> > 	0x1d4
> > > +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0
> > 	0x1d4
> > > +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1
> > 	0x1d4
> > > +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2
> > 	0x1d4
> > > +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3
> > 	0x1d4
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> > > +		fsl,pins = <
> > > +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK
> > 	0x196
> > > +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD
> > 	0x1d6
> > > +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0
> > 	0x1d6
> > > +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1
> > 	0x1d6
> > > +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2
> > 	0x1d6
> > > +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3
> > 	0x1d6
> > > +		>;
> > > +	};
> > > +
> > >  	pinctrl_usdhc2_gpio: usdhc2grpgpiogrp {
> > >  		fsl,pins = <
> > >  			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15
> > 	0x1c4
> > > --
> > > 2.37.1
> > >
> > >
> > >