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powerpc/85xx: Update timer-frequency prop in ptp_timer node of device tree

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Fix up the device tree property associated with the IEEE 1588 timer
source frequency.  Currently we only support the IEEE 1588 timer source
being the internal eTSEC system clock (for those SoCs with IEEE 1588
support).  The eTSEC clock is ccb_clk/2.

Signed-off-by: Bhaskar Upadhaya <Bhaskar.Upadhaya@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
bhaskar upadhaya 2011-02-02 14:44:28 +00:00 committed by Kumar Gala
parent 939cdcdc62
commit f5feb5afb2
1 changed files with 9 additions and 0 deletions
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9
arch/powerpc/cpu/mpc85xx/fdt.c
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@ -486,4 +486,13 @@ void ft_cpu_setup(void *blob, bd_t *bd)
#ifdef CONFIG_SYS_SRIO
ft_srio_setup(blob);
#endif
/*
* system-clock = CCB clock/2
* Here gd->bus_clk = CCB clock
* We are using the system clock as 1588 Timer reference
* clock source select
*/
do_fixup_by_compat_u32(blob, "fsl,gianfar-ptp-timer",
"timer-frequency", gd->bus_clk/2, 1);
}