Hi,

On Wed, Feb 25, 2015 at 01:12:01PM +0000, James Hartley wrote:

Hi Maxime, 

quoted

-----Original Message-----
From: Ezequiel Garcia
Sent: 25 February 2015 12:30
To: Maxime Ripard
Cc: Thierry Reding; Stephen Warren; Arnd Bergmann; Andrew Bresticker;
James Hartley; linux-arm-kernel at lists.infradead.org; linux-
kernel at vger.kernel.org
Subject: Re: [PATCH 0/7] New eFuse subsystem



On 02/25/2015 09:02 AM, Maxime Ripard wrote:

quoted

Hi Ezequiel,

On Wed, Feb 25, 2015 at 08:45:12AM -0300, Ezequiel Garcia wrote:

quoted

This patchset introduces a new driver subsystem, meant to support
eFuse (alias OTP, one-time-programmable) devices.

The motivation behind this work is to have a common place for drivers
that are currently more or less scattered: the tegra efuses are in
drivers/soc/ and the sunxi efuses in drivers/misc/eeprom.

For now, there's no proposal for a generic efuse API. Instead, we
simply group the drivers together.

This patchset is the result of the initial submission for IMG
Pistachio eFuse support [1]. Our first proposal was to follow the
Tegra efuse, and put the Pistachio efuse in drivers/soc. After some
discussion we finally agreed [2] to first create an efuse directoy,
and then put all efuse drivers in it.

As always, all comments are welcome!

[1] http://www.spinics.net/lists/devicetree/msg59246.html
[2] http://www.spinics.net/lists/arm-kernel/msg389325.html

Have you looked at the EEPROM framework currently in discussions? The
two seems to be covering pretty much the same use cases.

Shouldn't this be a PROM framework if it is going to support both
EEPROM and EFUSE/QFPROM, or am I missing something here (since an
eFuse is not eraseable)?

Does it really matter? I mean, it's just a name after all.

But feel free to suggest alternatives on the main thread.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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