From: bhaskar upadhaya Date: Wed, 2 Feb 2011 14:44:28 +0000 (+0000) Subject: powerpc/85xx: Update timer-frequency prop in ptp_timer node of device tree X-Git-Tag: v2011.06-rc1~185^2~9 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=f5feb5afb2d4cd02480056c37ebc111de3ee04fc;p=oweals%2Fu-boot.git powerpc/85xx: Update timer-frequency prop in ptp_timer node of device tree 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 Signed-off-by: Kumar Gala --- diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c index 6ed02845e8..642f6c54bd 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); }