linux-kernel - Re: [PATCH v2 0/6] Add support for Actions Semi Owl socinfo

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Message-ID: <20210401102717.GF14052@work>
Date:   Thu, 1 Apr 2021 15:57:17 +0530
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Cristian Ciocaltea <cristian.ciocaltea@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Andreas Färber <afaerber@...e.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] Add support for Actions Semi Owl socinfo

On Thu, Apr 01, 2021 at 12:40:41PM +0300, Cristian Ciocaltea wrote:
> Hi Mani,
> 
> On Thu, Apr 01, 2021 at 10:54:38AM +0530, Manivannan Sadhasivam wrote:
> > On Tue, Mar 30, 2021 at 04:48:15PM +0300, Cristian Ciocaltea wrote:
> > > This patchset adds a socinfo driver which provides information about
> > > Actions Semi Owl SoCs to user space via sysfs: machine, family, soc_id,
> > > serial_number.
> > > 
> > > Please note the serial number is currently available only for the S500
> > > SoC variant.
> > > 
> > > This has been tested on the S500 SoC based RoseapplePi SBC.
> > > 
> > 
> > Is this the soc_id provided by the vendor bootloader (uboot)? If so, under
> > what basis it provides? I don't think the SoC has the provision for
> > soc_id based on HW parameters.
> 
> No, the soc_id is not provided by the bootloader, or at least I couldn't
> identify any related implementation. Instead, I provided this via the
> driver itself, since I've encountered this approach in some other soc
> drivers as well (e.g. imx/soc-imx.c, versatile/soc-integrator.c). 
> 

Sorry, I was referring to serial_number. Since your comment says so, can
you point to the corresponding code?

Thanks,
Mani

> Thanks,
> Cristi
> 
> > Thanks,
> > Mani
>  
> [...]