diff options
| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-03-13 22:57:24 +0100 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2015-03-19 16:37:45 +0100 |
| commit | 1164f672d71ac103d85207b0453f3127c0efefb3 (patch) | |
| tree | c0ea3759b5de41c77e7cf26a8d00fc2512d79c97 /arch | |
| parent | 23b8408246aef28499a918b10425c1da4fef613a (diff) | |
| download | linux-1164f672d71ac103d85207b0453f3127c0efefb3.tar.gz linux-1164f672d71ac103d85207b0453f3127c0efefb3.tar.bz2 linux-1164f672d71ac103d85207b0453f3127c0efefb3.zip | |
ARM: at91: drop AT91_TIMER_HZ
Drop AT91_TIMER_HZ as this can be handled using HZ_FIXED. Initial help message
was:
On AT91rm9200 chips where you're using a system clock derived
from the 32768 Hz hardware clock, this tick rate should divide
it exactly: use a power-of-two value, such as 128 or 256, to
reduce timing errors caused by rounding.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mach-at91/Kconfig | 18 |
2 files changed, 1 insertions, 19 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a1d153098001..8d5c4f9c15f9 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1502,7 +1502,7 @@ config HZ_FIXED int default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \ ARCH_S5PV210 || ARCH_EXYNOS4 - default AT91_TIMER_HZ if ARCH_AT91 + default 128 if SOC_AT91RM9200 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY default 0 diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 9416613c8eca..e2cd30f6c23d 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -103,22 +103,4 @@ config SOC_SAMA5 select SOC_SAM_V7 select SRAM if PM -comment "Atmel SoCs Feature Selections" - -config AT91_TIMER_HZ - int "Kernel HZ (jiffies per second)" - range 32 1024 - depends on ARCH_AT91 - default "128" if SOC_AT91RM9200 - default "100" - help - On AT91rm9200 chips where you're using a system clock derived - from the 32768 Hz hardware clock, this tick rate should divide - it exactly: use a power-of-two value, such as 128 or 256, to - reduce timing errors caused by rounding. - - On AT91sam926x chips, or otherwise when using a higher precision - system clock (of at least several MHz), rounding is less of a - problem so it can be safer to use a decimal values like 100. - endif |