linux-kernel - Re: [PATCH 2/2] nvmem: imx-ocotp: add write support

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Message-ID: <20170330061643.mxk3regx6col4zt7@pengutronix.de>
Date:   Thu, 30 Mar 2017 08:16:43 +0200
From:   Sascha Hauer <s.hauer@...gutronix.de>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Richard Leitner <richard.leitner@...data.com>,
        Sascha Hauer <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        dev@...l1n.net
Subject: Re: [PATCH 2/2] nvmem: imx-ocotp: add write support

On Mon, Mar 27, 2017 at 10:42:06AM -0300, Fabio Estevam wrote:
> [Adding Pengutronix folks and Shawn on Cc]
> 
> On Mon, Mar 27, 2017 at 10:31 AM, Richard Leitner
> <richard.leitner@...data.com> wrote:
> > Implement write routine for OCOTP controller found in i.MX6 SoC's.
> > Furthermore add locking to the read function to prevent race conditions.
> > The write routine code is based on the fsl_otp driver from Freescale.
> >
> > Signed-off-by: Richard Leitner <richard.leitner@...data.com>
> 
> Do we really want to have write support in the driver?

Why not? The fuses must be written somewhere and some like to do it
under Linux.

Sascha

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