linux-kernel - Re: [PATCH v4 4/6] bus: ti-sysc: Add support for software reset

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Date:   Fri, 6 Jul 2018 15:34:31 +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>
Subject: Re: [PATCH v4 4/6] bus: ti-sysc: Add support for software reset

Hi,

On Thursday 05 July 2018 09:17 PM, Tony Lindgren wrote:
> * Faiz Abbas <faiz_abbas@...com> [180705 14:24]:
>> +static int sysc_reset(struct sysc *ddata)
>> +{
>> +	int offset = ddata->offsets[SYSC_SYSCONFIG];
>> +	int val = sysc_read(ddata, offset);
> 
> Can you please just warn and return early for now if no
> syss_mask is specified? Otherwise we'll have mysterious
> errors if somebody leaves out "ti,hwmods" for module types
> we do not yet support reset for.

RESET write to sysconfig can still happen even if there's no syss_mask
right? Not all modules need to poll on reset status.

Thanks,
Faiz