u-boot/arch/arm/cpu/armv7/keystone/cmd_clock.c

/*
 * keystone2: commands for clocks
 *
 * (C) Copyright 2012-2014
 *     Texas Instruments Incorporated, <www.ti.com>
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <asm/arch/hardware.h>
#include <asm/arch/clock.h>
#include <asm/arch/psc_defs.h>

struct pll_init_data cmd_pll_data = {
	.pll			= MAIN_PLL,
	.pll_m			= 16,
	.pll_d			= 1,
	.pll_od			= 2,
};

int do_pll_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	if (argc != 5)
		goto pll_cmd_usage;

	if (strncmp(argv[1], "pa", 2) == 0)
		cmd_pll_data.pll = PASS_PLL;
	else if (strncmp(argv[1], "arm", 3) == 0)
		cmd_pll_data.pll = TETRIS_PLL;
	else if (strncmp(argv[1], "ddr3a", 5) == 0)
		cmd_pll_data.pll = DDR3A_PLL;
	else if (strncmp(argv[1], "ddr3b", 5) == 0)
		cmd_pll_data.pll = DDR3B_PLL;
	else
		goto pll_cmd_usage;

	cmd_pll_data.pll_m   = simple_strtoul(argv[2], NULL, 10);
	cmd_pll_data.pll_d   = simple_strtoul(argv[3], NULL, 10);
	cmd_pll_data.pll_od  = simple_strtoul(argv[4], NULL, 10);

	printf("Trying to set pll %d; mult %d; div %d; OD %d\n",
	       cmd_pll_data.pll, cmd_pll_data.pll_m,
	       cmd_pll_data.pll_d, cmd_pll_data.pll_od);
	init_pll(&cmd_pll_data);

	return 0;

pll_cmd_usage:
	return cmd_usage(cmdtp);
}

U_BOOT_CMD(
	pllset,	5,	0,	do_pll_cmd,
	"set pll multiplier and pre divider",
	"<pa|arm|ddr3a|ddr3b> <mult> <div> <OD>\n"
);

int do_getclk_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	unsigned int clk;
	unsigned int freq;

	if (argc != 2)
		goto getclk_cmd_usage;

	clk = simple_strtoul(argv[1], NULL, 10);

	freq = clk_get_rate(clk);
	printf("clock index [%d] - frequency %u\n", clk, freq);
	return 0;

getclk_cmd_usage:
	return cmd_usage(cmdtp);
}

U_BOOT_CMD(
	getclk,	2,	0,	do_getclk_cmd,
	"get clock rate",
	"<clk index>\n"
	"See the 'enum clk_e' in the k2hk clock.h for clk indexes\n"
);

int do_psc_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int	psc_module;
	int	res;

	if (argc != 3)
		goto psc_cmd_usage;

	psc_module = simple_strtoul(argv[1], NULL, 10);
	if (strcmp(argv[2], "en") == 0) {
		res = psc_enable_module(psc_module);
		printf("psc_enable_module(%d) - %s\n", psc_module,
		       (res) ? "ERROR" : "OK");
		return 0;
	}

	if (strcmp(argv[2], "di") == 0) {
		res = psc_disable_module(psc_module);
		printf("psc_disable_module(%d) - %s\n", psc_module,
		       (res) ? "ERROR" : "OK");
		return 0;
	}

	if (strcmp(argv[2], "domain") == 0) {
		res = psc_disable_domain(psc_module);
		printf("psc_disable_domain(%d) - %s\n", psc_module,
		       (res) ? "ERROR" : "OK");
		return 0;
	}

psc_cmd_usage:
	return cmd_usage(cmdtp);
}

U_BOOT_CMD(
	psc,	3,	0,	do_psc_cmd,
	"<enable/disable psc module os disable domain>",
	"<mod/domain index> <en|di|domain>\n"
	"See the hardware.h for Power and Sleep Controller (PSC) Domains\n"
);