u-boot/arch/powerpc/cpu/mpc8xx/fdt.c
Christophe Leroy 6f65e75a8a powerpc, 8xx: Properly set CPM frequency in the device tree
For processors whose core runs at twice the bus frequency,
the fallback frequency calculation in Linux provides a wrong
result. Therefore, U-boot needs to pass the correct value.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Heiko Schocher <hs@denx.de>
2017-07-08 15:55:37 -04:00

29 lines
837 B
C

/*
* Copyright 2008 (C) Bryan O'Donoghue
*
* Code copied & edited from Freescale mpc85xx stuff.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <libfdt.h>
#include <fdt_support.h>
DECLARE_GLOBAL_DATA_PTR;
void ft_cpu_setup(void *blob, bd_t *bd)
{
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"timebase-frequency", get_tbclk(), 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"clock-frequency", bd->bi_intfreq, 1);
do_fixup_by_compat_u32(blob, "fsl,pq1-soc", "clock-frequency",
bd->bi_intfreq, 1);
do_fixup_by_compat_u32(blob, "fsl,cpm-brg", "clock-frequency",
gd->arch.brg_clk, 1);
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
}