Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features

From	Santosh Shilimkar <santosh.shilimkar@oracle.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features
Date	2016-06-02 20:20 +0200
Message-ID	<rFFnP-13m-9@gated-at.bofh.it> (permalink)
References	<rFm1Q-5Ac-3@gated-at.bofh.it> <rFmXU-6a2-11@gated-at.bofh.it> <rFnKi-6FR-13@gated-at.bofh.it> <rFA4O-5VV-41@gated-at.bofh.it>
Organization	Oracle Corporation

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On 6/2/2016 5:34 AM, Nishanth Menon wrote:
> On 06/01/2016 06:26 PM, Santosh Shilimkar wrote:
> [...]
>>>> Side note on LPAE:
>>>> For our current device tree and u-boot, LPAE is mandatory to bootup
>>>> for current Keystone boards - but this is not a SoC requirement,
>>>> booting without LPAE/HIGHMEM results in non-coherent DDR accesses.
>>>
>>> This sounds like a regression, I thought we had this working when
>>> keystone was initially merged and we got both the coherent and
>>> non-coherent mode working with the same DT.
>>>
>> Yes and it works. The coherent memory space itself is beyond 4GB so
>
> Hmm... True, I just tested next-20160602 with mem_lpae set to 0 in
> u-boot and it seems to boot just fine.
>
>> I don't understand a requirement of having coherent memory without
>> LPAE.
>
> Looks like a messed up description on my end, Looks like I have to
> update my automated test framework to incorporate the manual steps
> involved.
>
No worries. Am glad you got your setup working.

Regards,
Santosh

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[PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features Nishanth Menon <nm@ti.com> - 2016-06-01 23:40 +0200
  Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features Arnd Bergmann <arnd@arndb.de> - 2016-06-02 00:40 +0200
    Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Nishanth Menon <nm@ti.com> - 2016-06-02 01:00 +0200
      Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2016-06-02 01:30 +0200
      Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Tony Lindgren <tony@atomide.com> - 2016-06-07 06:30 +0200
        Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features Arnd Bergmann <arnd@arndb.de> - 2016-06-07 10:10 +0200
          Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Mark Brown <broonie@kernel.org> - 2016-06-07 14:10 +0200
          Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Tony Lindgren <tony@atomide.com> - 2016-06-08 11:50 +0200
            Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in typical Keystone features Arnd Bergmann <arnd@arndb.de> - 2016-06-08 18:10 +0200
              Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Tony Lindgren <tony@atomide.com> - 2016-06-09 09:00 +0200
                Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Mark Brown <broonie@kernel.org> - 2016-06-09 12:40 +0200
    Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2016-06-02 01:30 +0200
      Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Nishanth Menon <nm@ti.com> - 2016-06-02 14:40 +0200
        Re: [PATCH] ARM: Keystone: Introduce Kconfig option to compile in  typical Keystone features Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2016-06-02 20:20 +0200

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