linux-kernel - Re: [PATCH v2 1/4] clocksource: rockchip: Make the driver more compatible

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Message-ID: <56379D46.1000402@linaro.org>
Date:	Mon, 2 Nov 2015 18:28:38 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Heiko Stuebner <heiko@...ech.de>
Cc:	Caesar Wang <caesar.upstream@...il.com>,
	devicetree@...r.kernel.org, catalin.marinas@....com,
	will.deacon@....com, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	Caesar Wang <wxt@...k-chips.com>
Subject: Re: [PATCH v2 1/4] clocksource: rockchip: Make the driver more
 compatible

On 10/31/2015 12:47 AM, Heiko Stuebner wrote:
> Hi Daniel,
>
> Am Freitag, 30. Oktober 2015, 11:42:29 schrieb Daniel Lezcano:
>> On 10/30/2015 04:43 AM, Caesar Wang wrote:
>>> Hi Daniel,
>>>
>>> 在 2015年10月01日 03:14, Heiko Stübner 写道:
>>>> Hi Daniel,
>>>>
>>>> Am Dienstag, 29. September 2015, 06:18:03 schrieb Daniel Lezcano:
>>>>> On 09/25/2015 04:14 AM, Caesar Wang wrote:
>>>>>> Build the arm64 SoCs (e.g.: RK3368) on Rockchip platform,
>>>>>> There are some failure with build up on timer driver for rockchip.
>>>>>>
>>>>>> Says:
>>>>>> /tmp/ccdAnNy5.s:47: Error: missing immediate expression at  operand
>>>>>> 1 --
>>>>>> `dsb`
>>>>>> ...
>>>>>>
>>>>>> The problem was different semantics of dsb on btw arm32 and arm64,
>>>>>> Here we can convert the dsb with insteading of dsb(sy).The "sy" param
>>>>>> is the default which you are allow to omit, so on arm32 dsb()and
>>>>>> dsb(sy)
>>>>>> are the same.
>>>>>>
>>>>>> Signed-off-by: Caesar Wang <wxt@...k-chips.com>
>>>>> Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>
>>>> as you have "just" Acked these patches, I guess you are expecting them
>>>> to go
>>>> through the same tree as the devicetree changes, right?
>>>
>>> I'm wonder if someone will apply this series patchs but the wait.:-)
>>> In fact, I'm no sure that the Acked is really meaning.:-
>>
>> Yes, by acking the patch I say I am ok with it and I agree it can go
>> through another tree.
>
> although I guess the two clocksource changes could very well just go
> through your tree. dsb() -> dsb(sy) is supposed to be equal and the second
> one is just cosmetics.  The Kconfig and dts changes need to wait in any case
> for 4.5 ... but I guess that may be true for the clocksource changes as well?

Heiko, Caesar,

I am wondering if the dsb() is really necessary. Is it possible you test 
the timer by removing this instruction ? Otherwise I will have to setup 
my board again and it will take awhile.


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