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| author | Wjatscheslaw Stoljarski (Slawa) <wjatscheslaw.stoljarski@kiwigrid.com> | 2012-07-24 15:50:08 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-07-25 08:40:16 +0200 |
| commit | 1e3d002d5a33ade1bd0fc369fa0ea0ca8b0e3a83 (patch) | |
| tree | f996f13f4f26da0f2fff04bc073005336b0c7c15 /arch/arm/mach-imx/imx53.c | |
| parent | 4c6122a2f6805bae0ded59345b8ff89723c7b811 (diff) | |
| download | barebox-1e3d002d5a33ade1bd0fc369fa0ea0ca8b0e3a83.tar.gz barebox-1e3d002d5a33ade1bd0fc369fa0ea0ca8b0e3a83.tar.xz | |
ARM i.MX53: notify clocksource about changing clock
This fix a clock inaccuracy in get_time_ns (used by sleep, time, etc).
At i.MX53 power-on GPT clock is typically 55500000 Hz, and it will be used
to calc the clock multiplier. After call imx53_init_lowlevel() GPT clock
will changed (e.g. to 66666666 Hz), but multiplier not. To fix this behavior call
clock_notifier_call_chain() after changing clock in imx53_init_lowlevel().
Signed-off-by: Wjatscheslaw Stoljarski <wjatscheslaw.stoljarski@kiwigrid.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx/imx53.c')
| -rw-r--r-- | arch/arm/mach-imx/imx53.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c index b5dbc39dad..7c679bbe79 100644 --- a/arch/arm/mach-imx/imx53.c +++ b/arch/arm/mach-imx/imx53.c @@ -18,6 +18,7 @@ #include <init.h> #include <common.h> #include <io.h> +#include <notifier.h> #include <sizes.h> #include <mach/imx5.h> #include <mach/imx-regs.h> @@ -210,5 +211,6 @@ void imx53_init_lowlevel(unsigned int cpufreq_mhz) writel(0xffffffff, ccm + MX5_CCM_CCGR6); writel(0xffffffff, ccm + MX53_CCM_CCGR7); + clock_notifier_call_chain(); writel(0, ccm + MX5_CCM_CCDR); } |