linux-kernel - Re: [PATCH 0/2] ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists

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Message-ID: <53D03A93.90002@ti.com>
Date:	Wed, 23 Jul 2014 17:43:31 -0500
From:	Suman Anna <s-anna@...com>
To:	"Vutla, Lokesh" <lokeshvutla@...com>, "Menon, Nishanth" <nm@...com>
CC:	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tony@...mide.com" <tony@...mide.com>,
	"paul@...an.com" <paul@...an.com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"Nori, Sekhar" <nsekhar@...com>, "J, KEERTHY" <j-keerthy@...com>,
	"Quadros, Roger" <rogerq@...com>
Subject: Re: [PATCH 0/2] ARM: DRA7: hwmod: Add dra74x and dra72x specific
 ocp interface lists

Hi Lokesh,

On 07/22/2014 11:06 PM, Vutla, Lokesh wrote:
> Hi Nishanth,
> On Tuesday 22 July 2014 10:15 PM, Nishanth Menon wrote:
>> On 07/16/2014 03:36 AM, Lokesh Vutla wrote:
>>> This series add seperate ocp interface lists that are specific to dra74x
>>> and dra72x, and moving USB OTG SS4 to dra74x only since its not present
>>> in dra72x. Without this USB OTG SS4 hwmod gives an abort on dra72x.
>>>
>>> Adding support for soc_is_dra74x() and soc_is_dra72x() in order to differentiate
>>> between dra74x and dra72x and pass the respective ocp interface lists.
>>>
>>> Verified on dra74x evm and dra72x evm using 3.16-rc5 based mainline kernel.

Thanks for the series. I also need this for the differences in DSPs
present on both SoCs.

>>>
>>> Before:
>>> dra74x : http://paste.ubuntu.com/7802364/ 
>>> dra72x : http://paste.ubuntu.com/7802334/ (Kernel panic)
>>>
>>> After-
>>> dra74x : http://paste.ubuntu.com/7802340/
>>> dra72x : http://paste.ubuntu.com/7802338/ (booted)
>>>
>>> Rajendra Nayak (2):
>>>   ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x()
>>>     varients
>>>   ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
>>>
>>>  arch/arm/mach-omap2/omap_hwmod.c          |    3 +++
>>>  arch/arm/mach-omap2/omap_hwmod_7xx_data.c |   22 ++++++++++++++++++++--
>>>  arch/arm/mach-omap2/soc.h                 |    7 +++++++
>>>  3 files changed, 30 insertions(+), 2 deletions(-)
>>>
>> Tested-by: Nishanth Menon <nm@...com>
> Thanks..
>>
>> BUT, I suggest a follow up series to do exactly the same (moving stuff
>> that are not common from dra7.dtsi to dra72x.dtsi and 74x.dtsi) as
>> well to ensure that dts indicates exactly the same information (only
>> the applicable IPs are present in dts).

We also need a similar split for clockdomains, and possibly powerdomains
(I haven't compared all of them myself).

regards
Suman

> The separation of dra72x.dtsi and dra74x.dtsi is already happened and the patch is
> already present in mainline[1].
> Looks like usb_otg_ss4 is still present in dra7.dtsi, but this should go into dra74x.dtsi.
> I ll take it up.
> 
> [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=38b248db60e32734417534b57f9ab687c445113a
> 
> Thanks and regards,
> Lokesh
> 
>>
> 
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