linux-kernel - Re: [PATCH 1/3] ARM: dts: at91: sama5d2_xplained: classd: pull-down the R1 and R3 lines

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Message-ID: <20200617212758.GD3675@piout.net>
Date:   Wed, 17 Jun 2020 23:27:58 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        nicolas.ferre@...rochip.com, ludovic.desroches@...rochip.com,
        claudiu.beznea@...rochip.com
Subject: Re: [PATCH 1/3] ARM: dts: at91: sama5d2_xplained: classd: pull-down
 the R1 and R3 lines

On 15/06/2020 12:55:23+0300, Codrin Ciubotariu wrote:
> The R1 and R3 lines drive NMOS transistors that are OFF with a low level.
> On the SAMA5D2 Xplained board, if the pins corresponding to R1 and R3
> have pull-ups enabled, there is an extra 2 x 30uA power consumption.
> Use pull-downs for these 2 lines to remove the unnecessary power
> consumption.
> 
> Fixes: b133ca7a653c ("ARM: dts: at91: sama5d2_xplained: add pin muxing and enable classd")
> Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
> ---
>  arch/arm/boot/dts/at91-sama5d2_xplained.dts | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
Applied, thanks.

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com