u-boot-brain/arch/arm/mach-at91/armv7/cpu.c
Nicolas Ferre 62495e2cdb ARM: at91: armv7: sama7g5 uses CCF clock driver
SAMA7G5 uses CCF driver under drivers/clk/at91/ and not the custom older
at91 clock.c driver. Remove it from the compilation list and adapt cpu.c
arch_cpu_init() to avoid calling at91_clock_init() which is wrong
anyway.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
2020-11-26 10:12:47 +02:00

85 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Reinhard Meyer, reinhard.meyer@emk-elektronik.de
* (C) Copyright 2009
* Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* (C) Copyright 2013
* Bo Shen <voice.shen@atmel.com>
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <vsprintf.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_pit.h>
#include <asm/arch/at91_gpbr.h>
#include <asm/arch/clk.h>
#ifndef CONFIG_SYS_AT91_MAIN_CLOCK
#define CONFIG_SYS_AT91_MAIN_CLOCK 0
#endif
int arch_cpu_init(void)
{
#if defined(CONFIG_CLK_CCF)
return 0;
#else
return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK);
#endif
}
void arch_preboot_os(void)
{
#if (IS_ENABLED(CONFIG_ATMEL_PIT_TIMER))
ulong cpiv;
at91_pit_t *pit = (at91_pit_t *)ATMEL_BASE_PIT;
cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir));
/*
* Disable PITC
* Add 0x1000 to current counter to stop it faster
* without waiting for wrapping back to 0
*/
writel(cpiv + 0x1000, &pit->mr);
#endif
}
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
char buf[32];
printf("CPU: %s\n", get_cpu_name());
printf("Crystal frequency: %8s MHz\n",
strmhz(buf, get_main_clk_rate()));
printf("CPU clock : %8s MHz\n",
strmhz(buf, get_cpu_clk_rate()));
printf("Master clock : %8s MHz\n",
strmhz(buf, get_mck_clk_rate()));
return 0;
}
#endif
void enable_caches(void)
{
icache_enable();
dcache_enable();
}
#define ATMEL_CHIPID_CIDR_VERSION 0x1f
unsigned int get_chip_id(void)
{
return readl(ATMEL_CHIPID_CIDR) & ~ATMEL_CHIPID_CIDR_VERSION;
}
unsigned int get_extension_chip_id(void)
{
return readl(ATMEL_CHIPID_EXID);
}