arm: zynq: don't disable CONFIG_ARM_GLOBAL_TIMER due to CONFIG_CPU_FREQ anymore

Now ARM global timer driver could work even if it's source clock rate
changes, so we don't need to disable that driver when cpu frequency scaling
is in use.

This cause Zynq arch to get support for timer delay and get_cycles().

Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210406130045.15491-3-andrea.merello@gmail.com

diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
index 43fb941..a56748d 100644 (file)
--- a/arch/arm/mach-zynq/Kconfig
+++ b/arch/arm/mach-zynq/Kconfig
@@ -6,7 +6,7 @@ config ARCH_ZYNQ
        select ARCH_SUPPORTS_BIG_ENDIAN
        select ARM_AMBA
        select ARM_GIC
-       select ARM_GLOBAL_TIMER if !CPU_FREQ
+       select ARM_GLOBAL_TIMER
        select CADENCE_TTC_TIMER
        select HAVE_ARM_SCU if SMP
        select HAVE_ARM_TWD if SMP

diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 19fc5f8..9fa2823 100644 (file)
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -360,6 +360,7 @@ config ARM_GLOBAL_TIMER
 
 config ARM_GT_INITIAL_PRESCALER_VAL
        int "ARM global timer initial prescaler value"
+       default 2 if ARCH_ZYNQ
        default 1
        depends on ARM_GLOBAL_TIMER
        help