linux-kernel - Re: [PATCH v5 2/2] clk: intel: Add CGU clock driver for a new SoC

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Date:   Tue, 3 Mar 2020 12:09:36 +0200
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     "Tanwar, Rahul" <rahul.tanwar@...ux.intel.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>, mturquette@...libre.com,
        sboyd@...nel.org, robh@...nel.org, mark.rutland@....com,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, qi-ming.wu@...el.com,
        yixin.zhu@...ux.intel.com, cheol.yong.kim@...el.com,
        rtanwar <rahul.tanwar@...el.com>
Subject: Re: [PATCH v5 2/2] clk: intel: Add CGU clock driver for a new SoC

On Tue, Mar 03, 2020 at 11:37:23AM +0800, Tanwar, Rahul wrote:
> On 27/2/2020 6:02 PM, Andy Shevchenko wrote:
> > On Thu, Feb 27, 2020 at 03:19:26PM +0800, Tanwar, Rahul wrote:
> >> On 19/2/2020 3:59 PM, Randy Dunlap wrote:
> >>> On 2/18/20 11:40 PM, Rahul Tanwar wrote:
> >>>
> >>>> +config CLK_LGM_CGU
> >>>> +	depends on (OF && HAS_IOMEM) || COMPILE_TEST
> >>> This "depends on" looks problematic to me. I guess we shall see when
> >>> all the build bots get to it.
> >> At the moment, i am not able to figure out possible problems in this..
> > COMPILE_TEST should be accompanied by non-generic dependency.
> > There is none.
> >
> > So, I quite agree with Randy.
> 
> I see COMPILE_TEST is mostly ORed with ARCH_xx. How about below?
> 
> depends on OF && HAS_IOMEM && (CONFIG_X86 || COMPILE_TEST)

How about to leave logical parts separately?
How is OF related to architecture?

On top of that, is this code only for x86 for sure?

> >>>> +	select OF_EARLY_FLATTREE
> >>> If OF is not set and HAS_IOMEM is not set, but COMPILE_TEST is set,
> >>> I expect that this should not be attempting to select OF_EARLY_FLATTREE.
> >>>
> >>> Have you tried such a config combination?
> >> Agree, that would be a problem. I will change it to
> >>
> >> select OF_EARLY_FLATTREE if OF
> > Nope, I think this is wrong work around.
> > See above.
> 
> With above proposed change, i can simply switch to
> select OF_EARLY_FLATTREE since all dependencies are already
> in place..

Right.

-- 
With Best Regards,
Andy Shevchenko