linux-kernel - Re: [RFC PATCH v6 2/2] nvmem: Add Vybrid OCOTP and OCROM support

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Message-ID: <20150624051903.GA11753@Sanchayan-Arch.toradex.int>
Date:	Wed, 24 Jun 2015 10:49:04 +0530
From:	maitysanchayan@...il.com
To:	Stefan Wahren <stefan.wahren@...e.com>
Cc:	srinivas.kandagatla@...aro.org, maxime.ripard@...e-electrons.com,
	linux-arm-kernel@...ts.infradead.org, stefan@...er.ch,
	kernel@...gutronix.de, linux-kernel@...r.kernel.org,
	shawn.guo@...aro.org, arnd@...db.de
Subject: Re: [RFC PATCH v6 2/2] nvmem: Add Vybrid OCOTP and OCROM support

On 15-06-23 21:31:41, Stefan Wahren wrote:
> Hi Sanchayan,
> 
> > Sanchayan Maity <maitysanchayan@...il.com> hat am 23. Juni 2015 um 15:44
> > geschrieben:
> >
> >
> > The patch adds support for the On Chip One Time Programmable Peripheral
> > (OCOTP) and On Chip ROM (OCROM) support.
> >
> > On Vybrid OCOTP contain data like SoC ID, MAC address and OCROM has the
> > revision ID.
> >
> > Signed-off-by: Sanchayan Maity <maitysanchayan@...il.com>
> > ---
> > drivers/nvmem/Kconfig | 11 +++++++++
> > drivers/nvmem/Makefile | 2 ++
> > drivers/nvmem/vf610-ocotp.c | 60 +++++++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 73 insertions(+)
> > create mode 100644 drivers/nvmem/vf610-ocotp.c
> >
> > diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig
> > index 17f1a57..557c1e0 100644
> > --- a/drivers/nvmem/Kconfig
> > +++ b/drivers/nvmem/Kconfig
> > @@ -33,4 +33,15 @@ config NVMEM_SUNXI_SID
> > This driver can also be built as a module. If so, the module
> > will be called eeprom-sunxi-sid.
> >
> > +config NVMEM_VF610_OCOTP
> > + tristate "VF610 SoCs OCOTP support"
> > + depends on SOC_VF610
> > + select REGMAP_MMIO
> 
> how do you come to the conclusion that Vybrid On-Chip OTP is accessable via
> MMIO?

Frankly speaking I just changed the naming conventions and followed the qfrom
and sunxi sid examples in Srinivas's patches.

I just tested it without the "select REGMAP_MMIO" and it works just fine.

- Sanchayan.
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