linux-kernel - Re: [PATCH v1 03/11] drivers: soc: hisi: Add support for Hisilicon Djtag driver

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Date:   Tue, 08 Nov 2016 16:10:23 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     John Garry <john.garry@...wei.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Anurup M <anurupvasu@...il.com>, anurup.m@...wei.com,
        linux-kernel@...r.kernel.org, mark.rutland@....com,
        shyju.pv@...wei.com, gabriele.paoloni@...wei.com,
        will.deacon@....com, linuxarm@...wei.com, xuwei5@...ilicon.com,
        zhangshaokun@...ilicon.com, sanil.kumar@...ilicon.com,
        tanxiaojun@...wei.com, shiju.jose@...wei.com
Subject: Re: [PATCH v1 03/11] drivers: soc: hisi: Add support for Hisilicon Djtag driver

On Tuesday, November 8, 2016 1:49:43 PM CET John Garry wrote:
> 
> Hi Arnd,
> 
> Thanks for the reference.
> 
> I think the i2c interface doesn't fully satisfy our requirements as we 
> need more than just a slave bus address when accessing the slave device 
> (which I think is what i2c uses). We also need to pass "offset" and 
> "mod_mask" arguments to the djtag adapter to access specific registers 
> in the slave device.

Ok. Are those values constant per device, or maybe a range? We may want to
include those in the reg property as well then.

	Arnd