[PATCH] ARM: S3C6410: Support 800MHz operation in cpufreq
Kukjin Kim
kgene.kim at samsung.com
Fri May 6 00:48:44 EDT 2011
Mark Brown wrote:
>
> At least some newer S3C6410 silicon supports operation up to 800MHz rather
> than just 667MHz. Unfortunately I don't have access to any of
documentation
> of this other than some running systems, add a new cpufreq table entry for
> this based on the behaviour of those systems.
>
> Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
> ---
> arch/arm/mach-s3c64xx/cpufreq.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-s3c64xx/cpufreq.c b/arch/arm/mach-
> s3c64xx/cpufreq.c
> index 4375b97..db722a5 100644
> --- a/arch/arm/mach-s3c64xx/cpufreq.c
> +++ b/arch/arm/mach-s3c64xx/cpufreq.c
> @@ -32,6 +32,7 @@ static struct s3c64xx_dvfs s3c64xx_dvfs_table[] = {
> [1] = { 1050000, 1150000 },
> [2] = { 1100000, 1150000 },
> [3] = { 1200000, 1350000 },
> + [4] = { 1300000, 1350000 },
> };
>
> static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
> @@ -44,6 +45,7 @@ static struct cpufreq_frequency_table
s3c64xx_freq_table[]
> = {
> { 2, 532000 },
> { 2, 533000 },
> { 3, 667000 },
> + { 4, 800000 },
> { 0, CPUFREQ_TABLE_END },
> };
> #endif
> --
Hi Mark,
Yes, some newer S3C6410 can support 800Mhz(ARM clock) and you can
distinguish it from its marking on top of silicon. According to a design
guide, its typical VDD ARM is 1.3V :)
Will apply and thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim at samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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