[PATCH v3 1/7] ARM: S5PV210: Add a Kconfig entry "S5PC110_EVT0_WORKAROUND"
kmpark at infradead.org
Wed Jul 21 09:51:32 EDT 2010
On Wed, Jul 21, 2010 at 8:47 PM, Ben Dooks <ben at simtec.co.uk> wrote:
> On 21/07/10 02:13, MyungJoo Ham wrote:
>> 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.
>>>> + this option to execute workaround instructions.
>>> 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?
Mr. Ham will reply it.
As I know "yes", just FYI now Mr. Ham works on it. you can see it
http://git.infradead.org/users/kmpark/linux-2.6-samsung clock and
If you have a good idea, give your opinions.
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