linux-kernel - Re: [PATCH 2/2] ARM: dts: qcom: ipq4019-ap.dk01.1: align flash node with bindings

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Message-ID: <CAOX2RU6vG=cwW=A3zzMc0WT02a57LEpdZhHP_Bks5P_y486Fbg@mail.gmail.com>
Date:   Mon, 14 Aug 2023 12:54:52 +0200
From:   Robert Marko <robimarko@...il.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     agross@...nel.org, andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Caleb Connolly <caleb.connolly@...aro.org>
Subject: Re: [PATCH 2/2] ARM: dts: qcom: ipq4019-ap.dk01.1: align flash node
 with bindings

On Sat, 12 Aug 2023 at 16:15, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
> On 12.08.2023 16:12, Robert Marko wrote:
> > On Sat, 12 Aug 2023 at 16:08, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
> >>
> >> On 12.08.2023 16:07, Robert Marko wrote:
> >>> On Sat, 12 Aug 2023 at 12:47, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
> >>>>
> >>>> On 12.08.2023 11:55, Robert Marko wrote:
> >>>>> On Sat, 12 Aug 2023 at 00:56, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
> >>>>>>
> >>>>>> On 11.08.2023 23:35, Robert Marko wrote:
> >>>>>>> On Fri, 11 Aug 2023 at 23:28, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
> >>>>>>>>
> >>>>>>>> On 11.08.2023 23:01, Robert Marko wrote:
> >>>>>>>>> Rename the SPI-NOR node to flash@0, remove #address-cells and #size-cells
> >>>>>>>>> as they should be under the partitions subnode and use the generic
> >>>>>>>>> jedec,spi-nor compatible.
> >>>>>>>>>
> >>>>>>>>> Signed-off-by: Robert Marko <robimarko@...il.com>
> >>>>>>>>> ---
> >>>>>>>> You can also do "nandmanufacturer,mx25l25635e", "jedec,spi-nor"
> >>>>>>>
> >>>>>>> Hi,
> >>>>>>> I grepped the vendor U-Boot to make sure it's not being triggered off
> >>>>>>> the mx25l25635e
> >>>>>>> compatible but the only hit is the IC support itself.
> >>>>>>> MX25L25635 was just the original NOR IC Qualcomm used on the board so
> >>>>>>> to me it made
> >>>>>>> most sense to just use the JEDEC compatible as NOR itself is JEDEC NOR
> >>>>>>> compatible.
> >>>>>> OK if dynamic identification works fine
> >>>>>
> >>>>> It should work fine, datasheet is clear that its JEDEC compatible.
> >>>>> That being said, I dont actually have the board, just figured it was
> >>>>> time for a cleanup as
> >>>>> OpenWrt has been patching DK01 and DK04 for ages.
> >>>> Hm. Do we know whether there are still users of this boards?
> >>>
> >>> I honestly doubt it as they have been broken in OpenWrt for years and
> >>> nobody complained.
> >>> So we are currently removing support for them, but I still wanted to
> >>> at least fixup the DTS state
> >>> upstream.
> >>> These boards are not obtainable anymore.
> >> I also noticed they were detached from the other snapdragons in u-boot
> >> for no good reason (at first glance anyway).
> >
> > If you are talking about the mainline U-Boot then yeah, my basic port was done
> > years ago and I knew way less about the SoC then now.
> > Currently its on my TODO to merge them with Snapdragon and add some proper
> > GPIO and pinctrl drivers as well as using the Linux DTS.
> Take a look at this branch of mine [1], I already did some of that.
>
> If you wish to upstream that, please coordinate with Caleb (+CC) who
> may be interested in the same in parallel.
>
> [1] https://github.com/konradybcio/u-boot/commits/konrad/rb1_forcepushing

That is great, though this is very low hanging fruit for me, I have
plenty more of IPQ807x
stuff that needs to make its way upstream.

Regards,
Robert
>
> Konrad