Add code to properly initialize system counter, so it would be posible to get accurate time delays.
Signed-off-by: Andrey Smirnov <[email protected]> --- arch/arm/mach-imx/imx8mq.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/mach-imx/imx8mq.c b/arch/arm/mach-imx/imx8mq.c index 74fa8aca7..f3246e437 100644 --- a/arch/arm/mach-imx/imx8mq.c +++ b/arch/arm/mach-imx/imx8mq.c @@ -14,6 +14,8 @@ #include <init.h> #include <common.h> #include <io.h> +#include <asm/syscounter.h> +#include <asm/system.h> #include <mach/generic.h> #include <mach/revision.h> #include <mach/imx8mq-regs.h> @@ -58,6 +60,23 @@ static void imx8mq_silicon_revision(void) imx_set_silicon_revision(cputypestr, reg); } +static int imx8mq_init_syscnt_frequency(void) +{ + void __iomem *syscnt = IOMEM(MX8MQ_SYSCNT_CTRL_BASE_ADDR); + /* + * Update with accurate clock frequency + */ + set_cntfrq(syscnt_get_cntfrq(syscnt)); + syscnt_enable(syscnt); + + return 0; +} +/* + * This call needs to happen before timer driver gets probed and + * requests its update frequency via cntfrq_el0 + */ +core_initcall(imx8mq_init_syscnt_frequency); + int imx8mq_init(void) { imx8mq_silicon_revision(); -- 2.17.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
