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Message-ID: <CAMuHMdX+SJPTvDqKDwD_3DaAxDT3KcEbcjLNjj4JsbcpRwd92w@mail.gmail.com>
Date: Fri, 21 Feb 2020 11:15:04 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: Linux I2C <linux-i2c@...r.kernel.org>,
Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
linux-i3c@...ts.infradead.org,
Kieran Bingham <kieran@...uared.org.uk>,
Niklas Söderlund <niklas.soderlund@...natech.se>,
Luca Ceresoli <luca@...aceresoli.net>,
Jacopo Mondi <jacopo@...ndi.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Vladimir Zapolskiy <vz@...ia.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>
Subject: Re: [RFC PATCH 0/7] i2c: of: reserve unknown and ancillary addresses
Hi Wolfram,
On Thu, Feb 20, 2020 at 6:26 PM Wolfram Sang
<wsa+renesas@...g-engineering.com> wrote:
> One outcome of my dynamic address assignment RFC series[1] was that we
> need a way to describe an I2C bus in DT fully. This includes unknown
> devices and devices requiring multiple addresses. This series implements
> that.
>
> Patches 1+2 do some preparational refactoring. After patch 3, we can
> have child nodes with an address, but no compatible. Those addresses
> will be marked busy now. They are handled by the dummy driver as well,
> but named "reserved" instead of dummy. Patches 4+5 are again some
> preparational refactoring. After patch 6, all addresses in a 'reg' array
> are now blocked by the I2C core, also using the dummy driver but named
> "reserved". So, we can have something like this:
>
> dummy@13 {
Hence should that be "reserved@13"?
> reg = <0x13>, <0x14>;
> };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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