Re: [PATCH 1/3] ARM: dts: imx6: rdu2: Add node for UCS1002 USB charger chip

[Lucas Stach <l.stach@pengutronix.de>]

Am Mittwoch, den 29.05.2019, 00:18 -0700 schrieb Andrey Smirnov:
> Add node for UCS1002 USB charger chip connected to front panel USB and
> replace "regulator-fixed" previously used to control VBUS.
> 
> > Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> > Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> > Cc: Shawn Guo <shawnguo@kernel.org>
> > Cc: Chris Healy <cphealy@gmail.com>
> > Cc: Fabio Estevam <festevam@gmail.com>
> > Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org

FWIW:

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

> ---
> 
> Changes since [v1]:
> 
>     - Added GPIO hog configuration to put UCS1002 into correct mode
>       even before its driver takes over. The code for that is taken
>       from similar patch from Lucas, so I added his Signed-off-by as
>       well.
> 
> [v1] lore.kernel.org/r/20190522071227.31488-1-andrew.smirnov@gmail.com
> 
>  arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi | 77 +++++++++++++++++++------
>  1 file changed, 59 insertions(+), 18 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
> index 93be00a60c88..07e21d1e5b4c 100644
> --- a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
> @@ -60,18 +60,6 @@
> >  		regulator-always-on;
> >  	};
>  
> > -	reg_5p0v_user_usb: regulator-5p0v-user-usb {
> > -		compatible = "regulator-fixed";
> > -		pinctrl-names = "default";
> > -		pinctrl-0 = <&pinctrl_reg_user_usb>;
> > -		vin-supply = <&reg_5p0v_main>;
> > -		regulator-name = "5V_USER_USB";
> > -		regulator-min-microvolt = <5000000>;
> > -		regulator-max-microvolt = <5000000>;
> > -		gpio = <&gpio3 22 GPIO_ACTIVE_LOW>;
> > -		startup-delay-us = <1000>;
> > -	};
> -
> >  	reg_3p3v_pmic: regulator-3p3v-pmic {
> >  		compatible = "regulator-fixed";
> >  		vin-supply = <&reg_12p0v>;
> @@ -331,6 +319,39 @@
> >  	};
>  };
>  
> +&gpio3 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&pinctrl_gpio3_hog>;
> +
> > +	usb-emulation {
> > +		gpio-hog;
> > +		gpios = <19 GPIO_ACTIVE_HIGH>;
> > +		output-low;
> > +		line-name = "usb-emulation";
> > +	};
> +
> > +	usb-mode1 {
> > +		gpio-hog;
> > +		gpios = <20 GPIO_ACTIVE_HIGH>;
> > +		output-high;
> > +		line-name = "usb-mode1";
> > +	};
> +
> > +	usb-pwr {
> > +		gpio-hog;
> > +		gpios = <22 GPIO_ACTIVE_LOW>;
> > +		output-high;
> > +		line-name = "usb-pwr-ctrl-en-n";
> > +	};
> +
> > +	usb-mode2 {
> > +		gpio-hog;
> > +		gpios = <23 GPIO_ACTIVE_HIGH>;
> > +		output-high;
> > +		line-name = "usb-mode2";
> > +	};
> +};
> +
>  &i2c1 {
> >  	pinctrl-names = "default";
> >  	pinctrl-0 = <&pinctrl_i2c1>;
> @@ -590,6 +611,16 @@
> >  		status = "disabled";
> >  	};
>  
> > > +	reg_5p0v_user_usb: charger@32 {
> > +		compatible = "microchip,ucs1002";
> > +		pinctrl-names = "default";
> > +		pinctrl-0 = <&pinctrl_ucs1002_pins>;
> > +		reg = <0x32>;
> > +		interrupts-extended = <&gpio5 2 IRQ_TYPE_EDGE_BOTH>,
> > +				      <&gpio3 21 IRQ_TYPE_EDGE_BOTH>;
> > +		interrupt-names = "a_det", "alert";
> > +	};
> +
> > >  	hpa1: amp@60 {
> >  		compatible = "ti,tpa6130a2";
> >  		pinctrl-names = "default";
> @@ -935,6 +966,15 @@
> >  		>;
> >  	};
>  
> > +	pinctrl_gpio3_hog: gpio3hoggrp {
> > +		fsl,pins = <
> > > +			MX6QDL_PAD_EIM_D19__GPIO3_IO19		0x1b0b0
> > > +			MX6QDL_PAD_EIM_D20__GPIO3_IO20		0x1b0b0
> > > +			MX6QDL_PAD_EIM_D22__GPIO3_IO22		0x1b0b0
> > > +			MX6QDL_PAD_EIM_D23__GPIO3_IO23		0x1b0b0
> > +		>;
> > +	};
> +
> >  	pinctrl_i2c1: i2c1grp {
> >  		fsl,pins = <
> > >  			MX6QDL_PAD_CSI0_DAT8__I2C1_SDA		0x4001b8b1
> @@ -982,12 +1022,6 @@
> >  		>;
> >  	};
>  
> > -	pinctrl_reg_user_usb: usbotggrp {
> > -		fsl,pins = <
> > > -			MX6QDL_PAD_EIM_D22__GPIO3_IO22		0x40000038
> > -		>;
> > -	};
> -
> >  	pinctrl_rmii_phy_irq: phygrp {
> >  		fsl,pins = <
> > >  			MX6QDL_PAD_EIM_D30__GPIO3_IO30		0x40010000
> @@ -1047,6 +1081,13 @@
> >  		>;
> >  	};
>  
> > +	pinctrl_ucs1002_pins: ucs1002grp {
> > +		fsl,pins = <
> > > +			MX6QDL_PAD_EIM_A25__GPIO5_IO02  	0x1b0b0
> > > +			MX6QDL_PAD_EIM_D21__GPIO3_IO21  	0x1b0b0
> > +		>;
> > +	};
> +
> >  	pinctrl_usdhc2: usdhc2grp {
> >  		fsl,pins = <
> > >  			MX6QDL_PAD_SD2_CMD__SD2_CMD		0x10059

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