clock_manager_agilex.c
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 Intel Corporation <www.intel.com>
*
*/
#include <clk.h>
#include <common.h>
#include <dm.h>
#include <malloc.h>
#include <asm/arch/clock_manager.h>
#include <asm/arch/system_manager.h>
#include <asm/io.h>
#include <dt-bindings/clock/agilex-clock.h>
DECLARE_GLOBAL_DATA_PTR;
static ulong cm_get_rate_dm(u32 id)
{
struct udevice *dev;
struct clk clk;
ulong rate;
int ret;
ret = uclass_get_device_by_driver(UCLASS_CLK,
DM_GET_DRIVER(socfpga_agilex_clk),
&dev);
if (ret)
return 0;
clk.id = id;
ret = clk_request(dev, &clk);
if (ret < 0)
return 0;
rate = clk_get_rate(&clk);
clk_free(&clk);
if ((rate == (unsigned long)-ENOSYS) ||
(rate == (unsigned long)-ENXIO) ||
(rate == (unsigned long)-EIO)) {
debug("%s id %u: clk_get_rate err: %ld\n",
__func__, id, rate);
return 0;
}
return rate;
}
static u32 cm_get_rate_dm_khz(u32 id)
{
return cm_get_rate_dm(id) / 1000;
}
unsigned long cm_get_mpu_clk_hz(void)
{
return cm_get_rate_dm(AGILEX_MPU_CLK);
}
unsigned int cm_get_l4_sys_free_clk_hz(void)
{
return cm_get_rate_dm(AGILEX_L4_SYS_FREE_CLK);
}
u32 cm_get_qspi_controller_clk_hz(void)
{
return readl(socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_BOOT_SCRATCH_COLD0);
}
void cm_print_clock_quick_summary(void)
{
printf("MPU %10d kHz\n",
cm_get_rate_dm_khz(AGILEX_MPU_CLK));
printf("L4 Main %8d kHz\n",
cm_get_rate_dm_khz(AGILEX_L4_MAIN_CLK));
printf("L4 sys free %8d kHz\n",
cm_get_rate_dm_khz(AGILEX_L4_SYS_FREE_CLK));
printf("L4 MP %8d kHz\n",
cm_get_rate_dm_khz(AGILEX_L4_MP_CLK));
printf("L4 SP %8d kHz\n",
cm_get_rate_dm_khz(AGILEX_L4_SP_CLK));
printf("SDMMC %8d kHz\n",
cm_get_rate_dm_khz(AGILEX_SDMMC_CLK));
}