linux-kernel - Re: [PATCH v2 2/3] ARM: dts: sun8i: Add Allwinner A83T dtsi

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Message-ID: <20151201085940.GC29263@lukather>
Date:	Tue, 1 Dec 2015 09:59:40 +0100
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Vishnu Patekar <vishnupatekar0510@...il.com>
Cc:	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Emilio Lopez <emilio@...pez.com.ar>,
	Linus Walleij <linus.walleij@...aro.org>,
	Jens Kuske <jenskuske@...il.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Chen-Yu Tsai <wens@...e.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-sunxi@...glegroups.com" <linux-sunxi@...glegroups.com>,
	linux-gpio@...r.kernel.org
Subject: Re: [PATCH v2 2/3] ARM: dts: sun8i: Add Allwinner A83T dtsi

Hi!

On Mon, Nov 30, 2015 at 02:09:14AM +0800, Vishnu Patekar wrote:
> >> +                     reg = <0x01c20800 0x400>;
> >> +                     clocks = <&osc24M>;
> >> +                     gpio-controller;
> >> +                     interrupt-controller;
> >> +                     #interrupt-cells = <3>;
> >> +                     #gpio-cells = <3>;
> >> +
> >> +                     i2c0_pins_a: i2c0@0 {
> >> +                             allwinner,pins = "PH0", "PH1";
> >> +                             allwinner,function = "i2c0";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     i2c1_pins_a: i2c1@0 {
> >> +                             allwinner,pins = "PH2", "PH3";
> >> +                             allwinner,function = "i2c1";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     i2c2_pins_a: i2c2@0 {
> >> +                             allwinner,pins = "PH4", "PH5";
> >> +                             allwinner,function = "i2c2";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     mmc0_pins_a: mmc0@0 {
> >> +                             allwinner,pins = "PF0", "PF1", "PF2",
> >> +                                              "PF3", "PF4", "PF5";
> >> +                             allwinner,function = "mmc0";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_30_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     mmc1_pins_a: mmc1@0 {
> >> +                             allwinner,pins = "PG0", "PG1", "PG2",
> >> +                                              "PG3", "PG4", "PG5";
> >> +                             allwinner,function = "mmc1";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_30_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     mmc2_8bit_pins: mmc2_8bit {
> >> +                             allwinner,pins = "PC5", "PC6", "PC8",
> >> +                                              "PC9", "PC10", "PC11",
> >> +                                              "PC12", "PC13", "PC14",
> >> +                                              "PC15";
> >> +                             allwinner,function = "mmc2";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_30_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     uart0_pins_a: uart0@0 {
> >> +                             allwinner,pins = "PF2", "PF4";
> >> +                             allwinner,function = "uart0";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >> +
> >> +                     uart0_pins_b: uart0@1 {
> >> +                             allwinner,pins = "PB9", "PB10";
> >> +                             allwinner,function = "uart0";
> >> +                             allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> >> +                             allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> >> +                     };
> >
> > Are you going to use all these options?
>
> Not, only uart0_pins_a and uart0_pins_b and mmc0_pins_a will be used for now.
> As, these are not enabled, I don't see any harm in keeping those here.

It bloats the DT for no particular reason.

> Let me know in case you want to remove, I'll do it.

Yes, please.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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