linux-kernel - Re: [PATCH RESEND 2/5] ARM: dts: imx7d-sdb: Assign corresponding power supply for LDOs

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Date:   Tue, 28 May 2019 19:24:04 +0000
From:   Leonard Crestez <leonard.crestez@....com>
To:     Anson Huang <anson.huang@....com>
CC:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "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>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH RESEND 2/5] ARM: dts: imx7d-sdb: Assign corresponding
 power supply for LDOs

On 12.05.2019 12:57, Anson Huang wrote:
> On i.MX7D SDB board, sw2 supplies 1p0d/1p2 LDO, this patch assigns
> corresponding power supply for 1p0d/1p2 LDO to avoid confusion by
> below log:
> 
> vdd1p0d: supplied by regulator-dummy
> vdd1p2: supplied by regulator-dummy
> 
> With this patch, the power supply is more accurate:
> 
> vdd1p0d: supplied by SW2
> vdd1p2: supplied by SW2
> 
> diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts
>
> +&reg_1p0d {
> +	vin-supply = <&sw2_reg>;
> +};
> +
> +&reg_1p2 {
> +	vin-supply = <&sw2_reg>;
> +};

It's not clear why but this patch breaks imx7d-sdb boot. Checked two 
boards: in a board farm and on my desk.

--
Regards,
Leonard