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>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a1d15309800110d5ffa3fbb96039f0d5f75ffc0b..8d5c4f9c15f978b7800ac002174ac7e62f77f051 100644 (file)
--- 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 9416613c8ecadf8d677d9d47bf5a8cec03985767..e2cd30f6c23d56ac1a3e98d5ed43453bd253da01 100644 (file)
--- 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