linux-kernel - Re: [PATCH V2 0/5] Add support for custom names for AT24 EEPROMs

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Message-ID: <CAMpxmJUkS_VLa0A-izNngdSoyT36Y4PAEK1KTeXhQyo0XOCw4A@mail.gmail.com>
Date:   Wed, 23 Sep 2020 13:43:51 +0200
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     Jon Hunter <jonathanh@...dia.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        linux-devicetree <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, linux-tegra@...r.kernel.org
Subject: Re: [PATCH V2 0/5] Add support for custom names for AT24 EEPROMs

On Wed, Sep 23, 2020 at 1:38 PM Thierry Reding <thierry.reding@...il.com> wrote:
>
> On Wed, Sep 23, 2020 at 11:15:03AM +0200, Bartosz Golaszewski wrote:
> > On Wed, Sep 16, 2020 at 11:50 AM Jon Hunter <jonathanh@...dia.com> wrote:
> > >
> > > For platforms that have multiple boards and hence have multiple EEPROMs
> > > for identifying the different boards, it is useful to label the EEPROMs
> > > in device-tree so that they can be easily identified. For example, MAC
> > > address information is stored in the EEPROM on the processor module for
> > > some Jetson platforms which is not only required by the kernel but the
> > > bootloader as well. So having a simple way to identify the EEPROM is
> > > needed.
> > >
> > > Changes since V1:
> > > - By default initialise the nvmem_config.id as NVMEM_DEVID_AUTO and not
> > >   NVMEM_DEVID_NONE
> > > - Dropped the 'maxItems' from the dt-binding doc.
> > >
> > > Jon Hunter (5):
> > >   misc: eeprom: at24: Initialise AT24 NVMEM ID field
> > >   dt-bindings: eeprom: at24: Add label property for AT24
> > >   misc: eeprom: at24: Support custom device names for AT24 EEPROMs
> > >   arm64: tegra: Add label properties for EEPROMs
> > >   arm64: tegra: Populate EEPROMs for Jetson Xavier NX
> > >
> > >  .../devicetree/bindings/eeprom/at24.yaml      |  3 +++
> > >  .../boot/dts/nvidia/tegra186-p2771-0000.dts   |  1 +
> > >  .../arm64/boot/dts/nvidia/tegra186-p3310.dtsi |  1 +
> > >  .../arm64/boot/dts/nvidia/tegra194-p2888.dtsi |  1 +
> > >  .../boot/dts/nvidia/tegra194-p2972-0000.dts   |  1 +
> > >  .../nvidia/tegra194-p3509-0000+p3668-0000.dts | 14 ++++++++++++
> > >  .../boot/dts/nvidia/tegra194-p3668-0000.dtsi  | 16 ++++++++++++++
> > >  .../arm64/boot/dts/nvidia/tegra210-p2180.dtsi |  1 +
> > >  .../boot/dts/nvidia/tegra210-p2371-2180.dts   |  1 +
> > >  .../boot/dts/nvidia/tegra210-p3450-0000.dts   |  2 ++
> > >  drivers/misc/eeprom/at24.c                    | 22 ++++++++++++++++++-
> > >  11 files changed, 62 insertions(+), 1 deletion(-)
> > >
> > > --
> > > 2.25.1
> > >
> >
> > Just FYI: I'm fine with the at24 part. I can take them through my tree
> > for v5.10. Who is taking the DTS patches for tegra? Thierry? I can
> > provide you with an immutable branch if that's fine. I can't just ack
> > the at24 patches because they conflict with what I already have in my
> > tree for v5.10.
>
> I don't think I'll need an immutable branch since the device tree
> changes are not dependent on anything in the bindings, except maybe for
> validation, or the driver.
>
> Thierry

Ok sounds good then.

Bartosz