From: "Heiko Stübner" <heiko@sntech.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Yan <andy.yan@rock-chips.com>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
robh+dt@kernel.org, john.stultz@linaro.org, sjg@chromium.org,
treding@nvidia.com, galak@codeaurora.org,
ijc+devicetree@hellion.org.uk, wxt@rock-chips.com,
catalin.marinas@arm.com, olof@lixom.net, geert+renesas@glider.be,
linux-rockchip@lists.infradead.org, dbaryshkov@gmail.com,
sre@kernel.org, jun.nie@linaro.org, pawel.moll@arm.com,
will.deacon@arm.com, akpm@linux-foundation.org,
devicetree@vger.kernel.org, linux@arm.linux.org.uk,
gregkh@linuxfoundation.org, joel@jms.id.au,
linux-arm-kernel@lists.infradead.org, lorenzo.pieralisi@arm.com,
khilman@linaro.org, moritz.fischer@ettus.com,
linux-kernel@vger.kernel.org, mark.rutland@arm.com
Subject: Re: [PATCH v1 0/6] misc: add reboot mode driver
Date: Mon, 28 Dec 2015 16:56:12 +0100 [thread overview]
Message-ID: <3171716.cOpneyGyL8@diego> (raw)
In-Reply-To: <3460735.DIRnhNBgbJ@wuerfel>
Am Montag, 28. Dezember 2015, 16:28:55 schrieb Arnd Bergmann:
> On Wednesday 23 December 2015 17:31:45 Andy Yan wrote:
> > + { .compatible = "rockchip,reboot-mode-nvram",
> > + .data = (void *)&reboot-mode-nvram },
> > + {},
> > +};
>
> nvram is a complex topic by itself, because there are so many ways to do it.
> I think what you are referring to here is a battery-backed memory that uses
> one or more bytes at a fixed offset to store a particular piece of
> information, as the drivers/char/nvram.c driver does. Maybe we should put
> the reboot mode into that driver then?
>
> There are other nvram drivers at various places in the kernel, and each may
> be slightly different, or completely different, like the EFIVARs driver on
> UEFI firmware or the key/value store on Open Firmware, these probably need
> their own methods and not share the generic driver.
actually we now have drivers/nvmem/* that does that byte-wise addressing for
eeproms, efuses, etc in a generic way.
WARNING: multiple messages have this Message-ID (diff)
From: heiko@sntech.de (Heiko Stübner)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1 0/6] misc: add reboot mode driver
Date: Mon, 28 Dec 2015 16:56:12 +0100 [thread overview]
Message-ID: <3171716.cOpneyGyL8@diego> (raw)
In-Reply-To: <3460735.DIRnhNBgbJ@wuerfel>
Am Montag, 28. Dezember 2015, 16:28:55 schrieb Arnd Bergmann:
> On Wednesday 23 December 2015 17:31:45 Andy Yan wrote:
> > + { .compatible = "rockchip,reboot-mode-nvram",
> > + .data = (void *)&reboot-mode-nvram },
> > + {},
> > +};
>
> nvram is a complex topic by itself, because there are so many ways to do it.
> I think what you are referring to here is a battery-backed memory that uses
> one or more bytes at a fixed offset to store a particular piece of
> information, as the drivers/char/nvram.c driver does. Maybe we should put
> the reboot mode into that driver then?
>
> There are other nvram drivers at various places in the kernel, and each may
> be slightly different, or completely different, like the EFIVARs driver on
> UEFI firmware or the key/value store on Open Firmware, these probably need
> their own methods and not share the generic driver.
actually we now have drivers/nvmem/* that does that byte-wise addressing for
eeproms, efuses, etc in a generic way.
next prev parent reply other threads:[~2015-12-28 15:56 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-22 9:02 [PATCH v1 0/6] misc: add reboot mode driver Andy Yan
2015-12-22 9:02 ` Andy Yan
2015-12-22 9:05 ` [PATCH v1 1/6] dt-bindings: misc: add document for reboot-mode driver Andy Yan
2015-12-22 9:05 ` Andy Yan
2015-12-23 0:32 ` Rob Herring
2015-12-23 0:32 ` Rob Herring
2015-12-23 0:32 ` Rob Herring
2015-12-23 8:37 ` Moritz Fischer
2015-12-23 8:37 ` Moritz Fischer
2015-12-23 8:37 ` Moritz Fischer
2015-12-23 9:01 ` Andy Yan
2015-12-23 9:01 ` Andy Yan
2015-12-23 9:01 ` Andy Yan
2015-12-22 9:08 ` [PATCH v1 2/6] dt-bindings: soc: add document for rockchip " Andy Yan
2015-12-22 9:08 ` Andy Yan
2015-12-22 9:10 ` [PATCH v1 3/6] misc: add reboot mode driver Andy Yan
2015-12-22 9:10 ` Andy Yan
2015-12-22 9:13 ` [PATCH v1 4/6] soc: rockchip: " Andy Yan
2015-12-22 9:13 ` Andy Yan
2015-12-22 9:16 ` [PATCH v1 5/6] ARM: dts: rockchip: add reboot-mode node Andy Yan
2015-12-22 9:16 ` Andy Yan
2015-12-22 11:23 ` Heiko Stübner
2015-12-22 11:23 ` Heiko Stübner
2015-12-22 11:23 ` Heiko Stübner
2015-12-22 13:37 ` Andy Yan
2015-12-22 9:19 ` [PATCH v1 6/6] ARM64: " Andy Yan
2015-12-22 9:19 ` Andy Yan
2015-12-22 16:47 ` [PATCH v1 0/6] misc: add reboot mode driver Alexandre Belloni
2015-12-22 16:47 ` Alexandre Belloni
2015-12-22 16:47 ` Alexandre Belloni
2015-12-23 9:31 ` Andy Yan
2015-12-23 9:31 ` Andy Yan
2015-12-23 9:31 ` Andy Yan
2015-12-28 15:28 ` Arnd Bergmann
2015-12-28 15:28 ` Arnd Bergmann
2015-12-28 15:28 ` Arnd Bergmann
2015-12-28 15:56 ` Heiko Stübner [this message]
2015-12-28 15:56 ` Heiko Stübner
2015-12-28 16:09 ` Arnd Bergmann
2015-12-28 16:09 ` Arnd Bergmann
2015-12-28 16:09 ` Arnd Bergmann
2015-12-29 7:55 ` Andy Yan
2015-12-29 7:55 ` Andy Yan
2015-12-29 7:55 ` Andy Yan
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