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>

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