From: ben@simtec•co.uk (Ben Dooks)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 1/7] ARM: S5PV210: Add a Kconfig entry "S5PC110_EVT0_WORKAROUND"
Date: Wed, 21 Jul 2010 12:47:03 +0100 [thread overview]
Message-ID: <4C46DE37.5060105@simtec.co.uk> (raw)
In-Reply-To: <AANLkTikaUugKaDFCHW234eWLPn7KnV-wudeNY2-KwWR0@mail.gmail.com>
On 21/07/10 02:13, MyungJoo Ham wrote:
> On Wed, Jul 21, 2010 at 9:36 AM, Ben Dooks <ben@simtec•co.uk> wrote:
>> On 07/19/10 06:31, MyungJoo Ham wrote:
>>>
>>> Early S5PC110 (EVT0) chip had some issues required workaround from a
>>> kernel. We can add such workaround codes with this Kconfig entry.
>>>
>>> Signed-off-by: MyungJoo Ham<myungjoo.ham@samsung•com>
>>> Signed-off-by: Kyungmin Park<kyungmin.park@samsung•com>
>>> ---
>>> arch/arm/mach-s5pv210/Kconfig | 7 +++++++
>>> 1 files changed, 7 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
>>> index 631019a..18802e7 100644
>>> --- a/arch/arm/mach-s5pv210/Kconfig
>>> +++ b/arch/arm/mach-s5pv210/Kconfig
>>> @@ -101,4 +101,11 @@ config MACH_SMDKC110
>>> Machine support for Samsung SMDKC110
>>> S5PC110(MCP) is one of package option of S5PV210
>>>
>>> +config S5PC110_EVT0_WORKAROUND
>>> + bool "S5PC110 Early Chip Workaround (EVT0)"
>>> + help
>>> + Early S5PC110 (so called EVT0) has errata items that should be
>>> + addressed; otherwise the kernel may panic or be locked up.
>>> Enable
>>> + this option to execute workaround instructions.
>>> +
>>> endif
>>
>> What happens for non EVT0, is the a performance issue or is it exclusive?
>>
>
> This S5PC110_EVT0_WORKAROUND addresses issues (erratic behaviors, not
> performance issues) of "EVT-0" revisions, which is exclusive for these
> EVT-0 only. They do not apply to the later (EVT-1 and so on) chips.
Ok, so does the fix work for just EVT0? Does it exclude supporting other
EVT sillicon as well?
--
Ben
next prev parent reply other threads:[~2010-07-21 11:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-19 5:31 [PATCH v3 0/7] ARM: S5PV210: CPUFREQ Initial Support MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 1/7] ARM: S5PV210: Add a Kconfig entry "S5PC110_EVT0_WORKAROUND" MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 2/7] ARM: Samsung SoC: added hclk/pclk info to s3c_freq for s5pv210 cpu-freq MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 3/7] ARM: S5P: Added default pll values for APLL 800/1000MHz MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 4/7] ARM: S5P: Virtual Addresses for DMCx registers MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 5/7] ARM: S5PV210: macros for clock registers at regs-clock.h MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 6/7] ARM: S5PV210: Access for DMCx registers MyungJoo Ham
2010-07-19 5:31 ` [PATCH v3 7/7] ARM: S5PV210: Initial CPUFREQ Support MyungJoo Ham
2010-07-19 8:47 ` Mark Brown
2010-07-20 0:37 ` Kukjin Kim
2010-07-20 7:00 ` MyungJoo Ham
2010-07-21 0:38 ` [PATCH v3 5/7] ARM: S5PV210: macros for clock registers at regs-clock.h Ben Dooks
2010-07-21 2:03 ` MyungJoo Ham
2010-07-21 0:37 ` [PATCH v3 3/7] ARM: S5P: Added default pll values for APLL 800/1000MHz Ben Dooks
2010-07-21 1:28 ` MyungJoo Ham
2010-07-19 7:59 ` [PATCH v3 1/7] ARM: S5PV210: Add a Kconfig entry "S5PC110_EVT0_WORKAROUND" Kukjin Kim
2010-07-19 8:09 ` Kyungmin Park
2010-07-21 0:36 ` Ben Dooks
2010-07-21 1:13 ` MyungJoo Ham
2010-07-21 11:47 ` Ben Dooks [this message]
2010-07-21 13:51 ` Kyungmin Park
2010-07-22 0:57 ` MyungJoo Ham
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