blob: 8051995da4447a22f5e66f87ee73766b944c8cdb [file] [log] [blame]
/*
* Copyright (C) 2013-2017 Altera Corporation <www.altera.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <wait_bit.h>
#include <asm/io.h>
#include <asm/arch/clock_manager.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct socfpga_clock_manager *clock_manager_base =
(struct socfpga_clock_manager *)SOCFPGA_CLKMGR_ADDRESS;
void cm_wait_for_lock(u32 mask)
{
u32 inter_val;
u32 retry = 0;
do {
inter_val = readl(&clock_manager_base->inter) & mask;
if (inter_val == mask)
retry++;
else
retry = 0;
if (retry >= 10)
break;
} while (1);
}
/* function to poll in the fsm busy bit */
int cm_wait_for_fsm(void)
{
return wait_for_bit(__func__, (const u32 *)&clock_manager_base->stat,
CLKMGR_STAT_BUSY, false, 20000, false);
}
int set_cpu_clk_info(void)
{
/* Calculate the clock frequencies required for drivers */
cm_get_l4_sp_clk_hz();
cm_get_mmc_controller_clk_hz();
gd->bd->bi_arm_freq = cm_get_mpu_clk_hz() / 1000000;
gd->bd->bi_dsp_freq = 0;
gd->bd->bi_ddr_freq = cm_get_sdram_clk_hz() / 1000000;
return 0;
}
int do_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
cm_print_clock_quick_summary();
return 0;
}
U_BOOT_CMD(
clocks, CONFIG_SYS_MAXARGS, 1, do_showclocks,
"display clocks",
""
);