linux-kernel - Re: [PATCH v5 4/6] bus: ti-sysc: Add support for software reset

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Message-ID: <0ece4ef9-1306-d36a-acff-6ee4b98337c8@ti.com>
Date:   Tue, 10 Jul 2018 18:50:14 +0530
From:   Faiz Abbas <faiz_abbas@...com>
To:     Tony Lindgren <tony@...mide.com>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-clk@...r.kernel.org>, <robh+dt@...nel.org>,
        <bcousson@...libre.com>, <paul@...an.com>, <t-kristo@...com>,
        <mark.rutland@....com>, <sboyd@...nel.org>
Subject: Re: [PATCH v5 4/6] bus: ti-sysc: Add support for software reset

Hi Tony,

On Tuesday 10 July 2018 05:12 PM, Tony Lindgren wrote:
> Hi,
> 
> * Faiz Abbas <faiz_abbas@...com> [180709 16:50]:
>> Add support for the software reset of a target interconnect
>> module using its sysconfig and sysstatus registers.
> ...
>> --- a/drivers/bus/ti-sysc.c
>> +++ b/drivers/bus/ti-sysc.c
> ...
>> +static int sysc_reset(struct sysc *ddata)
>> +{
>> +	int offset = ddata->offsets[SYSC_SYSCONFIG];
>> +	int val = sysc_read(ddata, offset);
> 
> Testing with omap4 sysc dts data I noticed we already
> have modules where there is only rev register and no
> SYSC_SYSCONFIG. So not using legacy mode. The
> above offset with -ENODEV value will not work :)
> 
> I added some more checks and moved them to the reset
> function.

Great. Thanks for the fix.

Thanks,
Faiz