[PATCH v3 1/7] ARM: S5PV210: Add a Kconfig entry "S5PC110_EVT0_WORKAROUND"

[MyungJoo Ham]

On Wed, Jul 21, 2010 at 9:36 AM, Ben Dooks <ben at 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 at samsung.com>
>> Signed-off-by: Kyungmin Park<kyungmin.park at 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 (함명주), Ph.D.
Mobile Software Platform Lab,
Digital Media and Communications (DMC) Business
Samsung Electronics
cell: 82-10-6714-2858