linux-kernel - Re: [PATCH] arm64: dts: mediatek: mt8195-demo: fix the memory size of

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Date:   Wed, 28 Sep 2022 09:47:50 +0800
From:   Miles Chen <miles.chen@...iatek.com>
To:     <macpaul.lin@...iatek.com>
CC:     <bear.wang@...iatek.com>, <devicetree@...r.kernel.org>,
        <fparent@...libre.com>, <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-usb@...r.kernel.org>,
        <macpaul@...il.com>, <matthias.bgg@...il.com>,
        <miles.chen@...iatek.com>, <pablo.sun@...iatek.com>,
        <robh+dt@...nel.org>, <stable@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: mediatek: mt8195-demo: fix the memory size of

>On 9/26/22 15:05, Miles Chen wrote:
>> Hi Macpaul,
>> 
>>> The size of device tree node secmon (bl31_secmon_reserved) was
>>> incorrect. It should be increased to 2MiB (0x200000).
>> 
>> 192K should work when the patch(6147314aeedc) was accepted.
>> Does the trusted-firmware-a get larger now, so we need to
>> increase the size to 2MiB?
>> 
>> thanks,
>> Miles
>
>When mt8195-demo.dts sent to the upstream, at that time the size of
>BL31 was small. Because supported functions and modules in BL31 are 
>basic sets when the board was under early development stage.
>
>Now BL31 includes more firmwares of coprocessors and maturer functions
>so the size has grown bigger in real applications. According to the 
>value reported by customers, we think reserved 2MiB for BL31 might be 
>enough for maybe the following 2 or 3 years.

Thanks for your explanation,
please add this to the commit message and submit next version.

With that, feel free to add:
Reviewed-by: Miles Chen <miles.chen@...iatek.com> 

thanks,
Miles