[U-Boot] [PATCH v3 28/66] rockchip: rk3368: spl: define COUNTER_FREQUENCY to 24MHz

Philipp Tomsich
2017-07-28T19:22:00Z

The BootROM of the RK3368 Boot ROM does not initialise cntfrq_el0.
This change defines COUNTER_FREQUENCY, which is used by the AArch64 init
code in arch/arm/cpu/armv8/start.S to set up cntfrq_el0.

If the counter-frequency is not correctly set up, the calculation of
delays using the ARMv8 generic timer can not work correctly.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

Reviewed-by: Simon Glass <sjg@chromium.org>
---

Changes in v3: None
Changes in v2: None

include/configs/rk3368_common.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/configs/rk3368_common.h b/include/configs/rk3368_common.h
index b0c858c..ddb7df0 100644
--- a/include/configs/rk3368_common.h
+++ b/include/configs/rk3368_common.h
@@ -21,6 +21,8 @@
#define CONFIG_SYS_CBSIZE 1024
#define CONFIG_SKIP_LOWLEVEL_INIT

+#define COUNTER_FREQUENCY 24000000
+
#define CONFIG_SYS_NS16550_MEM32

#define CONFIG_SYS_TEXT_BASE 0x00200000
--
2.1.4