| Message ID | 1501065662-52029-27-git-send-email-philipp.tomsich@theobroma-systems.com |
|---|---|
| State | Superseded |
| Delegated to: | Philipp Tomsich |
| Headers | show |
On 26 July 2017 at 04:40, Philipp Tomsich <philipp.tomsich@theobroma-systems.com> wrote: > 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> > --- > > Changes in v2: None > > include/configs/rk3368_common.h | 2 ++ > 1 file changed, 2 insertions(+) > Reviewed-by: Simon Glass <sjg@chromium.org>
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
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> --- Changes in v2: None include/configs/rk3368_common.h | 2 ++ 1 file changed, 2 insertions(+)