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/*
* DRA7XX OPP table definitions.
*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/io.h>
#include <linux/module.h>
#include "control.h"
#include "omap_opp_data.h"
#include "pm.h"
#include "soc.h"
/* From DRA7x TRM, SPRUHI2Q */
#define DRA7XX_STD_FUSE_DIE_ID_2 0x4AE0C20C
#define SPEED_VAL_MASK (0x1F << 19)
#define SPEED_VAL_SHFT 19
/*
* These values indicate the highest available OPP so if the value
* is found we want that OPP and all below it
*/
#define EFUSE_HAS_OD_MPU_OPP 11
#define EFUSE_HAS_HIGH_MPU_OPP 15
#define EFUSE_HAS_ALL_MPU_OPP 23
/*
* We only include OPP_OD and OPP_HIGH here, OPP_NOM is common to all
* variants and left to be supplied by DT.
*/
static struct omap_opp_def dra7xx_es1_0_opp_list[] __initdata = {
/* MPU OPP - OPP_OD */
OPP_INITIALIZER("mpu", false, 1176000000, 1160000),
/* MPU OPP - OPP_HIGH */
OPP_INITIALIZER("mpu", false, 1500000000, 1210000),
};
/**
* dra7xx_opp_init() - initialize dra7xx opp table
*/
int __init dra7xx_opp_init(void)
{
int r = -ENODEV;
u32 rev, val, max_freq;
void __iomem *speed_reg_addr;
if (WARN(!soc_is_dra7xx(), "Cannot init OPPs: unsupported SoC.\n"))
return r;
speed_reg_addr = ioremap(DRA7XX_STD_FUSE_DIE_ID_2, SZ_1);
rev = omap_rev();
switch (rev) {
case DRA752_REV_ES1_0:
case DRA752_REV_ES1_1:
case DRA752_REV_ES2_0:
case DRA722_REV_ES1_0:
default:
/*
* First read speed reg to detect supported frequency
*/
val = readl(speed_reg_addr);
max_freq = val & SPEED_VAL_MASK;
max_freq >>= SPEED_VAL_SHFT;
switch (max_freq) {
case EFUSE_HAS_ALL_MPU_OPP:
case EFUSE_HAS_HIGH_MPU_OPP:
opp_def_list_enable_opp(dra7xx_es1_0_opp_list,
ARRAY_SIZE(dra7xx_es1_0_opp_list),
"mpu", 1500000000, true);
/* FALLTHROUGH */
case EFUSE_HAS_OD_MPU_OPP:
opp_def_list_enable_opp(dra7xx_es1_0_opp_list,
ARRAY_SIZE(dra7xx_es1_0_opp_list),
"mpu", 1176000000, true);
};
r = omap_init_opp_table(dra7xx_es1_0_opp_list,
ARRAY_SIZE(dra7xx_es1_0_opp_list));
break;
}
return r;
}
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