linux-kernel - Re: [PATCH 1/3] ARM: dra762: hwmod: Add MCAN support

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Message-ID: <20180515171459.GP98604@atomide.com>
Date:   Tue, 15 May 2018 10:14:59 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Faiz Abbas <faiz_abbas@...com>
Cc:     linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        devicetree@...r.kernel.org, bcousson@...libre.com,
        robh+dt@...nel.org, mark.rutland@....com, paul@...an.com,
        lokeshvutla@...com, linux@...linux.org.uk
Subject: Re: [PATCH 1/3] ARM: dra762: hwmod: Add MCAN support

* Faiz Abbas <faiz_abbas@...com> [180515 06:05]:
> Hi Tony,
> 
> On Tuesday 01 May 2018 08:56 PM, Tony Lindgren wrote:
> > Hi,
> > 
> > * Faiz Abbas <faiz_abbas@...com> [180408 09:59]:
> >> From: Lokesh Vutla <lokeshvutla@...com>
> >>
> >> Add MCAN hwmod data and register it for dra762 silicons.
> >>
> >> Signed-off-by: Lokesh Vutla <lokeshvutla@...com>
> >> Signed-off-by: Faiz Abbas <faiz_abbas@...com>
> >> ---
> >>  arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 32 +++++++++++++++++++++++++++++++
> >>  1 file changed, 32 insertions(+)
> >>
> >> diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
> >> index 62352d1..a2cd7f8 100644
> >> --- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
> >> +++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
> >> @@ -1356,6 +1356,29 @@ static struct omap_hwmod dra7xx_mailbox13_hwmod = {
> >>  };
> >>  
> >>  /*
> >> + * 'mcan' class
> >> + *
> >> + */
> >> +static struct omap_hwmod_class dra76x_mcan_hwmod_class = {
> >> +	.name	= "mcan",
> >> +};
> > 
> > Looks like you're missing the related struct omap_hwmod_class_sysconfig
> > entry for this with the rev and sysconfig registers.
> > 
> 
> Sorry, I missed this email earlier. The MCAN module doesn't have
> sysconfig registers.

If there's no sysconfig register you should have no need for adding
anything to omap_hwmod_7xx_data.c. We now have the dts clkctrl
clocks, you can just add that to the dts node for the device.

Regards,

Tony