From: myungjoo.ham@samsung.com (MyungJoo Ham)
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 10:13:30 +0900 [thread overview]
Message-ID: <AANLkTikaUugKaDFCHW234eWLPn7KnV-wudeNY2-KwWR0@mail.gmail.com> (raw)
In-Reply-To: <4C464127.5040405@simtec.co.uk>
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.
--
MyungJoo Ham (???), Ph.D.
Mobile Software Platform Lab,
Digital Media and Communications (DMC) Business
Samsung Electronics
cell: 82-10-6714-2858
next prev parent reply other threads:[~2010-07-21 1:13 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 [this message]
2010-07-21 11:47 ` Ben Dooks
2010-07-21 13:51 ` Kyungmin Park
2010-07-22 0:57 ` MyungJoo Ham
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