linux-kernel - Re: [PATCH v2 5/6] ARM: dts: Add generic interconnect target module node for MCAN

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Date:   Thu, 31 May 2018 06:45:07 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Faiz Abbas <faiz_abbas@...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
Subject: Re: [PATCH v2 5/6] ARM: dts: Add generic interconnect target module
 node for MCAN

* Faiz Abbas <faiz_abbas@...com> [180531 10:22]:
> On Wednesday 30 May 2018 08:34 PM, Tony Lindgren wrote:
> > Looks good to me except I think the reset won't do anything currently
> > with ti-sysc.c unless you specfify also "ti,hwmods" for the module?
> > 
> > Can you please check? It might be worth adding the reset function to
> > ti-sysc.c for non "ti,hwmods" case and that just might remove the
> > need for any hwmod code for this module.
> > 
> 
> If I understand correctly, this involves adding a (*reset_module) in
> ti_sysc_platform_data and defining a ti_sysc_reset_module() in ti-sysc.c
> similar to ti_sysc_idle_module(). Right?

Well try moving "ti,hwmods" to the module level first. Then reset will
happen with enable.

Then for simple cases we can add reset directly to ti-sysc.c without
pdata callbacks and and drop "ti,hwmods". For more complex cases we
need to use reset-simple for the RSTCTRL registers.

Regards,

Tony