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From: DENG Qingfang <dqfext@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: "Andrew Lunn" <andrew@lunn.ch>,
	"Vivien Didelot" <vivien.didelot@gmail.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Vladimir Oltean" <olteanv@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"Sean Wang" <sean.wang@mediatek.com>,
	"Landen Chao" <Landen.Chao@mediatek.com>,
	"Philipp Zabel" <p.zabel@pengutronix.de>,
	"Russell King" <linux@armlinux.org.uk>,
	netdev <netdev@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
	"moderated list:ARM/Mediatek SoC support"
	<linux-mediatek@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"René van Dorst" <opensource@vdorst.com>,
	"Frank Wunderlich" <frank-w@public-files.de>
Subject: Re: [PATCH net-next 2/2] drivers: net: dsa: mt7530: MT7530 optional GPIO support
Date: Tue, 19 Jan 2021 11:20:48 +0800	[thread overview]
Message-ID: <CALW65jbJ2DFqLw-i91y7oRfRhcukHSAS3A0XMuy4kA+1AtLtLQ@mail.gmail.com> (raw)
In-Reply-To: <CACRpkdYA2fWF_1K+2aYoZnBAsm9H3=VHpeT4ZDU5sCdrOUWx=w@mail.gmail.com>

Hi Linus,

On Mon, Jan 18, 2021 at 10:55 PM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> So for offset 0..14 this becomes bits
> 0, 1, 2, 4, 5, 6, 8, 9, 10, 12  ... 18
>
> What is the logic in this and is it what you intend?

Yes. Bit 0..2 are phy 0's LED 0..2, bit 4..6 are phy 1's LED 0..2, etc.

> Please add a comment explaining what the offset is supposed
> to become for offsets 0..14 and why.

I already added to mt7530.h, perhaps I should copy it here?

>
> > +       gc->ngpio = 15;
>
> And it really IS 15 not 16? Not that I know network equipment
> very well...

Yes, 3 LEDs for each phy.

>
> Yours,
> Linus Walleij

  reply	other threads:[~2021-01-19  3:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-11  5:44 [PATCH net-next 0/2] dsa: add MT7530 GPIO support DENG Qingfang
2021-01-11  5:44 ` [PATCH net-next 1/2] dt-bindings: net: dsa: add MT7530 GPIO controller binding DENG Qingfang
2021-01-14 19:11   ` Rob Herring
2021-01-18 14:43   ` Linus Walleij
2021-01-11  5:44 ` [PATCH net-next 2/2] drivers: net: dsa: mt7530: MT7530 optional GPIO support DENG Qingfang
2021-01-11 11:04   ` Russell King - ARM Linux admin
2021-01-11 13:40     ` DENG Qingfang
2021-01-11 13:55       ` Russell King - ARM Linux admin
2021-01-18 14:55   ` Linus Walleij
2021-01-19  3:20     ` DENG Qingfang [this message]
2021-01-22 10:06       ` Linus Walleij
2021-01-11 13:43 ` [PATCH net-next 0/2] dsa: add MT7530 " Vladimir Oltean
2021-01-14  9:36   ` Bartosz Golaszewski
2021-01-11 15:46 ` Marek Behún
2021-01-12  2:50   ` DENG Qingfang
2021-01-14 17:08     ` Florian Fainelli

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