linux-kernel - Re: [PATCH 4/8] arm64: dts: meson: remove fixed memory size for Khadas VIM3/VIM3L meson-khadas-vim3

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Message-ID: <3aa15c85-5dec-52df-c97f-67d45572d5be@baylibre.com>
Date:   Fri, 25 Sep 2020 09:40:28 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Artem Lapkin <email2tema@...il.com>, robh+dt@...nel.org
Cc:     khilman@...libre.com, jbrunet@...libre.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        art@...das.com, nick@...das.com, gouwa@...das.com
Subject: Re: [PATCH 4/8] arm64: dts: meson: remove fixed memory size for
 Khadas VIM3/VIM3L meson-khadas-vim3

On 25/09/2020 09:37, Martin Blumenstingl wrote:
> Hi Artem,
> 
> On Fri, Sep 25, 2020 at 5:31 AM Artem Lapkin <email2tema@...il.com> wrote:
>>
>> no need force setup memory size!
>> VIM3 boards have 2Gb and 4Gb variants
>> memory size will be automatically defined
>>
>> mainline uboot works properly in any case
>> but old vendor uboot works not properly for 4Gb variants
> can you be more specific with what "does not work properly"? is Linux
> then only able to use 2GB or is there any other problem?
> 
> overall this sounds like a bug in the vendor u-boot to me
> I don't see that we have any other Amlogic .dts which needs this hack,
> so I'd like to hear the feedback from the device-tree maintainers (for
> example Rob) as well

AFAIK the vendor u-boot updates the memory correctly, what it doesn't is adding
the reserved memory zones.

Neil

> 
> 
> Best regards,
> Martin
>