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-rw-r--r--arch/powerpc/cpu/mpc85xx/fdt.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c
index 6ed0284..642f6c5 100644
--- a/arch/powerpc/cpu/mpc85xx/fdt.c
+++ b/arch/powerpc/cpu/mpc85xx/fdt.c
@@ -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);
}