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rockchip: rk3368: spl: define COUNTER_FREQUENCY to 24MHz

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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>
This commit is contained in:
Philipp Tomsich
2017-06-22 23:31:55 +02:00
parent 525a8c8f2c
commit e78b04f9d5
1 changed files with 2 additions and 0 deletions
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2
include/configs/rk3368_common.h
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@@ -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