mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 16:07:30 +00:00
508791a035
Add Clock Manager driver support for Stratix SoC Signed-off-by: Chin Liang See <chin.liang.see@intel.com> Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2013-2017 Altera Corporation <www.altera.com>
|
|
*/
|
|
|
|
#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 {
|
|
#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
|
|
inter_val = readl(&clock_manager_base->inter) & mask;
|
|
#else
|
|
inter_val = readl(&clock_manager_base->stat) & mask;
|
|
#endif
|
|
/* Wait for stable lock */
|
|
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_le32(&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;
|
|
|
|
#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
|
|
gd->bd->bi_ddr_freq = cm_get_sdram_clk_hz() / 1000000;
|
|
#else
|
|
gd->bd->bi_ddr_freq = 0;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifndef CONFIG_SPL_BUILD
|
|
static 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",
|
|
""
|
|
);
|
|
#endif
|