linux-kernel - RE: [PATCH v8 6/6] ARM: dts: imx6: RIoTboard provide standby on power off option

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Message-ID: <DB6PR04MB3223FA7B91D0D43B2EC1EE2A892A0@DB6PR04MB3223.eurprd04.prod.outlook.com>
Date:   Fri, 27 Jul 2018 09:33:28 +0000
From:   Robin Gong <yibin.gong@....com>
To:     Oleksij Rempel <o.rempel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
CC:     "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Leonard Crestez <leonard.crestez@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Russell King <linux@...linux.org.uk>,
        dl-linux-imx <linux-imx@....com>,
        "A.s. Dong" <aisheng.dong@....com>
Subject: RE: [PATCH v8 6/6] ARM: dts: imx6: RIoTboard provide standby on power
 off option



> -----Original Message-----
> From: Oleksij Rempel [mailto:o.rempel@...gutronix.de]
> Sent: 2018年7月26日 17:22
> To: Shawn Guo <shawnguo@...nel.org>; Mark Brown <broonie@...nel.org>;
> Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Cc: Oleksij Rempel <o.rempel@...gutronix.de>; kernel@...gutronix.de;
> devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-clk@...r.kernel.org; linux-kernel@...r.kernel.org; Andrew Morton
> <akpm@...ux-foundation.org>; Liam Girdwood <lgirdwood@...il.com>;
> Leonard Crestez <leonard.crestez@....com>; Rob Herring
> <robh+dt@...nel.org>; Mark Rutland <mark.rutland@....com>; Michael
> Turquette <mturquette@...libre.com>; Stephen Boyd
> <sboyd@...eaurora.org>; Fabio Estevam <fabio.estevam@....com>; Russell
> King <linux@...linux.org.uk>; dl-linux-imx <linux-imx@....com>; Robin Gong
> <yibin.gong@....com>; A.s. Dong <aisheng.dong@....com>
> Subject: [PATCH v8 6/6] ARM: dts: imx6: RIoTboard provide standby on power
> off option
> 
> This board, as well as some other boards with i.MX6 and a PMIC, uses a
> "PMIC_STBY_REQ" line to notify the PMIC about a state change.
> The PMIC is programmed for a specific state change before triggering the line.
> In this case, PMIC_STBY_REQ can be used for stand by, sleep and power off
> modes.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  arch/arm/boot/dts/imx6dl-riotboard.dts | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx6dl-riotboard.dts
> b/arch/arm/boot/dts/imx6dl-riotboard.dts
> index 2e98c92adff7..a0e9753ee767 100644
> --- a/arch/arm/boot/dts/imx6dl-riotboard.dts
> +++ b/arch/arm/boot/dts/imx6dl-riotboard.dts
> @@ -90,6 +90,10 @@
>  	status = "okay";
>  };
> 
> +&clks {
> +	fsl,pmic-stby-poweroff;
> +};
It's better remove the default "syscon-poweroff" power off node.
> +
>  &fec {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_enet>;
> @@ -170,6 +174,7 @@
>  		reg = <0x08>;
>  		interrupt-parent = <&gpio5>;
>  		interrupts = <16 8>;
> +		fsl,pmic-stby-poweroff;
> 
>  		regulators {
>  			reg_vddcore: sw1ab {				/* VDDARM_IN */
> --
> 2.18.0