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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2015-03-13 22:57:24 +0100
committerNicolas Ferre <nicolas.ferre@atmel.com>2015-03-19 16:37:45 +0100
commit1164f672d71ac103d85207b0453f3127c0efefb3 (patch)
treec0ea3759b5de41c77e7cf26a8d00fc2512d79c97 /arch/arm/mach-at91
parent23b8408246aef28499a918b10425c1da4fef613a (diff)
downloadlinux-1164f672d71ac103d85207b0453f3127c0efefb3.tar.bz2
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/arm/mach-at91')
-rw-r--r--arch/arm/mach-at91/Kconfig18
1 files changed, 0 insertions, 18 deletions
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