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From: Neil Armstrong <narmstrong@baylibre.com>
To: Andreas Fenkart <afenkart@gmail.com>, linux-amlogic@lists.infradead.org
Cc: krzysztof.michonski@digitalstrom.com
Subject: Re: amlogic mmc_partitions support
Date: Mon, 14 Jan 2019 11:00:04 +0100	[thread overview]
Message-ID: <1d699426-5744-5149-f136-66db54b87056@baylibre.com> (raw)
In-Reply-To: <CALtMJECdszQv+ZqbPv9dfq2QbogVJMfth+fNL40pgwh0_RtbCw@mail.gmail.com>

Hi Andreas,

On 14/01/2019 10:54, Andreas Fenkart wrote:
> Hi,
> 
> What is a feasible way to port the vendor supplied
> drivers/amlogic/mmc/emmc_partitions.c into something that could be
> mainlined? My thought is to create a custom block/partition/amlogic.c
> driver. Would that have a chance to be included in mainline?

Basically, Amlogic uses the eMMC main partition as a MTD devices and uses a
custom DT partition scheme to export named MTD partitions to user-space.

They don't use any "standard" partitions schemes on the eMMC main HW partition.

Mainline will never support DT-defined MMC partitions, and will never support
a MTD indirection to a MMC HW partition either.

You can try to implement something similar using FUSE, but it won't be simple.

> 
> Anybody else that tries to support the existing amlogic partition
> format, not the implementation, as is. I want to upgrade the kernel
> via fw upgrade on existing installations, but not touch the u-boot nor
> the formatting.

Some people forward ported it, and is available on some git repos around the
Khadas VIM support.

Neil

> 
> /Andi
> 
> _______________________________________________
> linux-amlogic mailing list
> linux-amlogic@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-amlogic
> 


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  reply	other threads:[~2019-01-14 10:05 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-14  9:54 amlogic mmc_partitions support Andreas Fenkart
2019-01-14 10:00 ` Neil Armstrong [this message]
2019-01-14 14:35   ` Peter Korsgaard
2019-01-14 14:46     ` Neil Armstrong
2019-01-14 14:42   ` Andreas Fenkart

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