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u-boot/arch/arm/cpu/armv7/omap4/clocks.c
SRICHARAN R 8de17f4617 OMAP5: palmas: Configure nominal opp vdd values 
The nominal opp vdd values as recommended for
ES1.0 silicon is set for mpu, core, mm domains using palmas.

Also used the right sequence to enable the vcores as per
a previous patch from Nishant Menon, which can be dropped now.
	http://lists.denx.de/pipermail/u-boot/2012-March/119151.html

Signed-off-by: R Sricharan <r.sricharan@ti.com>
2012-05-15 08:31:23 +02:00

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/*
*
* Clock initialization for OMAP4
*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* Aneesh V <aneesh@ti.com>
*
* Based on previous work by:
* Santosh Shilimkar <santosh.shilimkar@ti.com>
* Rajendra Nayak <rnayak@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/omap_common.h>
#include <asm/gpio.h>
#include <asm/arch/clocks.h>
#include <asm/arch/sys_proto.h>
#include <asm/utils.h>
#include <asm/omap_gpio.h>
#ifndef CONFIG_SPL_BUILD
/*
* printing to console doesn't work unless
* this code is executed from SPL
*/
#define printf(fmt, args...)
#define puts(s)
#endif
#define abs(x) (((x) < 0) ? ((x)*-1) : (x))
struct omap4_prcm_regs *const prcm = (struct omap4_prcm_regs *)0x4A004100;
const u32 sys_clk_array[8] = {
12000000, /* 12 MHz */
13000000, /* 13 MHz */
16800000, /* 16.8 MHz */
19200000, /* 19.2 MHz */
26000000, /* 26 MHz */
27000000, /* 27 MHz */
38400000, /* 38.4 MHz */
};
/*
* The M & N values in the following tables are created using the
* following tool:
* tools/omap/clocks_get_m_n.c
* Please use this tool for creating the table for any new frequency.
*/
/* dpll locked at 1400 MHz MPU clk at 700 MHz(OPP100) - DCC OFF */
static const struct dpll_params mpu_dpll_params_1400mhz[NUM_SYS_CLKS] = {
{175, 2, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
{700, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
{125, 2, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{401, 10, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{350, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
{700, 26, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
{638, 34, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
/* dpll locked at 1584 MHz - MPU clk at 792 MHz(OPP Turbo 4430) */
static const struct dpll_params mpu_dpll_params_1600mhz[NUM_SYS_CLKS] = {
{200, 2, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
{800, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
{619, 12, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{125, 2, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{400, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
{800, 26, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
{125, 5, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
/* dpll locked at 1200 MHz - MPU clk at 600 MHz */
static const struct dpll_params mpu_dpll_params_1200mhz[NUM_SYS_CLKS] = {
{50, 0, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
{600, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
{250, 6, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{125, 3, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{300, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
{200, 8, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
{125, 7, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params core_dpll_params_1600mhz[NUM_SYS_CLKS] = {
{200, 2, 1, 5, 8, 4, 6, 5}, /* 12 MHz */
{800, 12, 1, 5, 8, 4, 6, 5}, /* 13 MHz */
{619, 12, 1, 5, 8, 4, 6, 5}, /* 16.8 MHz */
{125, 2, 1, 5, 8, 4, 6, 5}, /* 19.2 MHz */
{400, 12, 1, 5, 8, 4, 6, 5}, /* 26 MHz */
{800, 26, 1, 5, 8, 4, 6, 5}, /* 27 MHz */
{125, 5, 1, 5, 8, 4, 6, 5} /* 38.4 MHz */
};
static const struct dpll_params core_dpll_params_es1_1524mhz[NUM_SYS_CLKS] = {
{127, 1, 1, 5, 8, 4, 6, 5}, /* 12 MHz */
{762, 12, 1, 5, 8, 4, 6, 5}, /* 13 MHz */
{635, 13, 1, 5, 8, 4, 6, 5}, /* 16.8 MHz */
{635, 15, 1, 5, 8, 4, 6, 5}, /* 19.2 MHz */
{381, 12, 1, 5, 8, 4, 6, 5}, /* 26 MHz */
{254, 8, 1, 5, 8, 4, 6, 5}, /* 27 MHz */
{496, 24, 1, 5, 8, 4, 6, 5} /* 38.4 MHz */
};
static const struct dpll_params
core_dpll_params_es2_1600mhz_ddr200mhz[NUM_SYS_CLKS] = {
{200, 2, 2, 5, 8, 4, 6, 5}, /* 12 MHz */
{800, 12, 2, 5, 8, 4, 6, 5}, /* 13 MHz */
{619, 12, 2, 5, 8, 4, 6, 5}, /* 16.8 MHz */
{125, 2, 2, 5, 8, 4, 6, 5}, /* 19.2 MHz */
{400, 12, 2, 5, 8, 4, 6, 5}, /* 26 MHz */
{800, 26, 2, 5, 8, 4, 6, 5}, /* 27 MHz */
{125, 5, 2, 5, 8, 4, 6, 5} /* 38.4 MHz */
};
static const struct dpll_params per_dpll_params_1536mhz[NUM_SYS_CLKS] = {
{64, 0, 8, 6, 12, 9, 4, 5}, /* 12 MHz */
{768, 12, 8, 6, 12, 9, 4, 5}, /* 13 MHz */
{320, 6, 8, 6, 12, 9, 4, 5}, /* 16.8 MHz */
{40, 0, 8, 6, 12, 9, 4, 5}, /* 19.2 MHz */
{384, 12, 8, 6, 12, 9, 4, 5}, /* 26 MHz */
{256, 8, 8, 6, 12, 9, 4, 5}, /* 27 MHz */
{20, 0, 8, 6, 12, 9, 4, 5} /* 38.4 MHz */
};
static const struct dpll_params iva_dpll_params_1862mhz[NUM_SYS_CLKS] = {
{931, 11, -1, -1, 4, 7, -1, -1}, /* 12 MHz */
{931, 12, -1, -1, 4, 7, -1, -1}, /* 13 MHz */
{665, 11, -1, -1, 4, 7, -1, -1}, /* 16.8 MHz */
{727, 14, -1, -1, 4, 7, -1, -1}, /* 19.2 MHz */
{931, 25, -1, -1, 4, 7, -1, -1}, /* 26 MHz */
{931, 26, -1, -1, 4, 7, -1, -1}, /* 27 MHz */
{412, 16, -1, -1, 4, 7, -1, -1} /* 38.4 MHz */
};
/* ABE M & N values with sys_clk as source */
static const struct dpll_params
abe_dpll_params_sysclk_196608khz[NUM_SYS_CLKS] = {
{49, 5, 1, 1, -1, -1, -1, -1}, /* 12 MHz */
{68, 8, 1, 1, -1, -1, -1, -1}, /* 13 MHz */
{35, 5, 1, 1, -1, -1, -1, -1}, /* 16.8 MHz */
{46, 8, 1, 1, -1, -1, -1, -1}, /* 19.2 MHz */
{34, 8, 1, 1, -1, -1, -1, -1}, /* 26 MHz */
{29, 7, 1, 1, -1, -1, -1, -1}, /* 27 MHz */
{64, 24, 1, 1, -1, -1, -1, -1} /* 38.4 MHz */
};
/* ABE M & N values with 32K clock as source */
static const struct dpll_params abe_dpll_params_32k_196608khz = {
750, 0, 1, 1, -1, -1, -1, -1
};
static const struct dpll_params usb_dpll_params_1920mhz[NUM_SYS_CLKS] = {
{80, 0, 2, -1, -1, -1, -1, -1}, /* 12 MHz */
{960, 12, 2, -1, -1, -1, -1, -1}, /* 13 MHz */
{400, 6, 2, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{50, 0, 2, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{480, 12, 2, -1, -1, -1, -1, -1}, /* 26 MHz */
{320, 8, 2, -1, -1, -1, -1, -1}, /* 27 MHz */
{25, 0, 2, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
void setup_post_dividers(u32 *const base, const struct dpll_params *params)
{
struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
/* Setup post-dividers */
if (params->m2 >= 0)
writel(params->m2, &dpll_regs->cm_div_m2_dpll);
if (params->m3 >= 0)
writel(params->m3, &dpll_regs->cm_div_m3_dpll);
if (params->m4 >= 0)
writel(params->m4, &dpll_regs->cm_div_m4_dpll);
if (params->m5 >= 0)
writel(params->m5, &dpll_regs->cm_div_m5_dpll);
if (params->m6 >= 0)
writel(params->m6, &dpll_regs->cm_div_m6_dpll);
if (params->m7 >= 0)
writel(params->m7, &dpll_regs->cm_div_m7_dpll);
}
/*
* Lock MPU dpll
*
* Resulting MPU frequencies:
* 4430 ES1.0 : 600 MHz
* 4430 ES2.x : 792 MHz (OPP Turbo)
* 4460 : 920 MHz (OPP Turbo) - DCC disabled
*/
const struct dpll_params *get_mpu_dpll_params(void)
{
u32 omap_rev, sysclk_ind;
omap_rev = omap_revision();
sysclk_ind = get_sys_clk_index();
if (omap_rev == OMAP4430_ES1_0)
return &mpu_dpll_params_1200mhz[sysclk_ind];
else if (omap_rev < OMAP4460_ES1_0)
return &mpu_dpll_params_1600mhz[sysclk_ind];
else
return &mpu_dpll_params_1400mhz[sysclk_ind];
}
const struct dpll_params *get_core_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
switch (omap_revision()) {
case OMAP4430_ES1_0:
return &core_dpll_params_es1_1524mhz[sysclk_ind];
case OMAP4430_ES2_0:
case OMAP4430_SILICON_ID_INVALID:
/* safest */
return &core_dpll_params_es2_1600mhz_ddr200mhz[sysclk_ind];
default:
return &core_dpll_params_1600mhz[sysclk_ind];
}
}
const struct dpll_params *get_per_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &per_dpll_params_1536mhz[sysclk_ind];
}
const struct dpll_params *get_iva_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &iva_dpll_params_1862mhz[sysclk_ind];
}
const struct dpll_params *get_usb_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &usb_dpll_params_1920mhz[sysclk_ind];
}
const struct dpll_params *get_abe_dpll_params(void)
{
#ifdef CONFIG_SYS_OMAP_ABE_SYSCK
u32 sysclk_ind = get_sys_clk_index();
return &abe_dpll_params_sysclk_196608khz[sysclk_ind];
#else
return &abe_dpll_params_32k_196608khz;
#endif
}
/*
* Setup the voltages for vdd_mpu, vdd_core, and vdd_iva
* We set the maximum voltages allowed here because Smart-Reflex is not
* enabled in bootloader. Voltage initialization in the kernel will set
* these to the nominal values after enabling Smart-Reflex
*/
void scale_vcores(void)
{
u32 volt, omap_rev;
omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ);
omap_rev = omap_revision();
/*
* Scale Voltage rails:
* 1. VDD_CORE
* 3. VDD_MPU
* 3. VDD_IVA
*/
if (omap_rev < OMAP4460_ES1_0) {
/*
* OMAP4430:
* VDD_CORE = TWL6030 VCORE3
* VDD_MPU = TWL6030 VCORE1
* VDD_IVA = TWL6030 VCORE2
*/
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE3, volt);
/*
* note on VDD_MPU:
* Setting a high voltage for Nitro mode as smart reflex is not
* enabled. We use the maximum possible value in the AVS range
* because the next higher voltage in the discrete range
* (code >= 0b111010) is way too high.
*/
volt = 1325;
do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
} else {
/*
* OMAP4460:
* VDD_CORE = TWL6030 VCORE1
* VDD_MPU = TPS62361
* VDD_IVA = TWL6030 VCORE2
*/
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
/* TPS62361 */
volt = 1203;
do_scale_tps62361(TPS62361_VSEL0_GPIO,
TPS62361_REG_ADDR_SET1, volt);
/* VCORE 2 - supplies vdd_iva */
volt = 1200;
do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
}
}
u32 get_offset_code(u32 offset)
{
u32 offset_code, step = 12660; /* 12.66 mV represented in uV */
if (omap_revision() == OMAP4430_ES1_0)
offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV;
else
offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV;
offset_code = (offset + step - 1) / step;
/* The code starts at 1 not 0 */
return ++offset_code;
}
/*
* Enable essential clock domains, modules and
* do some additional special settings needed
*/
void enable_basic_clocks(void)
{
u32 *const clk_domains_essential[] = {
&prcm->cm_l4per_clkstctrl,
&prcm->cm_l3init_clkstctrl,
&prcm->cm_memif_clkstctrl,
&prcm->cm_l4cfg_clkstctrl,
0
};
u32 *const clk_modules_hw_auto_essential[] = {
&prcm->cm_memif_emif_1_clkctrl,
&prcm->cm_memif_emif_2_clkctrl,
&prcm->cm_l4cfg_l4_cfg_clkctrl,
&prcm->cm_wkup_gpio1_clkctrl,
&prcm->cm_l4per_gpio2_clkctrl,
&prcm->cm_l4per_gpio3_clkctrl,
&prcm->cm_l4per_gpio4_clkctrl,
&prcm->cm_l4per_gpio5_clkctrl,
&prcm->cm_l4per_gpio6_clkctrl,
&prcm->cm_l3init_usbphy_clkctrl,
&prcm->cm_clksel_usb_60mhz,
&prcm->cm_l3init_hsusbtll_clkctrl,
0
};
u32 *const clk_modules_explicit_en_essential[] = {
&prcm->cm_wkup_gptimer1_clkctrl,
&prcm->cm_l3init_hsmmc1_clkctrl,
&prcm->cm_l3init_hsmmc2_clkctrl,
&prcm->cm_l4per_gptimer2_clkctrl,
&prcm->cm_wkup_wdtimer2_clkctrl,
&prcm->cm_l4per_uart3_clkctrl,
&prcm->cm_l3init_fsusb_clkctrl,
&prcm->cm_l3init_hsusbhost_clkctrl,
0
};
/* Enable optional additional functional clock for GPIO4 */
setbits_le32(&prcm->cm_l4per_gpio4_clkctrl,
GPIO4_CLKCTRL_OPTFCLKEN_MASK);
/* Enable 96 MHz clock for MMC1 & MMC2 */
setbits_le32(&prcm->cm_l3init_hsmmc1_clkctrl,
HSMMC_CLKCTRL_CLKSEL_MASK);
setbits_le32(&prcm->cm_l3init_hsmmc2_clkctrl,
HSMMC_CLKCTRL_CLKSEL_MASK);
/* Select 32KHz clock as the source of GPTIMER1 */
setbits_le32(&prcm->cm_wkup_gptimer1_clkctrl,
GPTIMER1_CLKCTRL_CLKSEL_MASK);
/* Enable optional 48M functional clock for USB PHY */
setbits_le32(&prcm->cm_l3init_usbphy_clkctrl,
USBPHY_CLKCTRL_OPTFCLKEN_PHY_48M_MASK);
do_enable_clocks(clk_domains_essential,
clk_modules_hw_auto_essential,
clk_modules_explicit_en_essential,
1);
}
void enable_basic_uboot_clocks(void)
{
u32 *const clk_domains_essential[] = {
0
};
u32 *const clk_modules_hw_auto_essential[] = {
&prcm->cm_l3init_hsusbotg_clkctrl,
&prcm->cm_l3init_usbphy_clkctrl,
0
};
u32 *const clk_modules_explicit_en_essential[] = {
&prcm->cm_l4per_mcspi1_clkctrl,
&prcm->cm_l4per_i2c1_clkctrl,
&prcm->cm_l4per_i2c2_clkctrl,
&prcm->cm_l4per_i2c3_clkctrl,
&prcm->cm_l4per_i2c4_clkctrl,
0
};
do_enable_clocks(clk_domains_essential,
clk_modules_hw_auto_essential,
clk_modules_explicit_en_essential,
1);
}
/*
* Enable non-essential clock domains, modules and
* do some additional special settings needed
*/
void enable_non_essential_clocks(void)
{
u32 *const clk_domains_non_essential[] = {
&prcm->cm_mpu_m3_clkstctrl,
&prcm->cm_ivahd_clkstctrl,
&prcm->cm_dsp_clkstctrl,
&prcm->cm_dss_clkstctrl,
&prcm->cm_sgx_clkstctrl,
&prcm->cm1_abe_clkstctrl,
&prcm->cm_c2c_clkstctrl,
&prcm->cm_cam_clkstctrl,
&prcm->cm_dss_clkstctrl,
&prcm->cm_sdma_clkstctrl,
0
};
u32 *const clk_modules_hw_auto_non_essential[] = {
&prcm->cm_mpu_m3_mpu_m3_clkctrl,
&prcm->cm_ivahd_ivahd_clkctrl,
&prcm->cm_ivahd_sl2_clkctrl,
&prcm->cm_dsp_dsp_clkctrl,
&prcm->cm_l3_2_gpmc_clkctrl,
&prcm->cm_l3instr_l3_3_clkctrl,
&prcm->cm_l3instr_l3_instr_clkctrl,
&prcm->cm_l3instr_intrconn_wp1_clkctrl,
&prcm->cm_l3init_hsi_clkctrl,
&prcm->cm_l3init_hsusbtll_clkctrl,
0
};
u32 *const clk_modules_explicit_en_non_essential[] = {
&prcm->cm1_abe_aess_clkctrl,
&prcm->cm1_abe_pdm_clkctrl,
&prcm->cm1_abe_dmic_clkctrl,
&prcm->cm1_abe_mcasp_clkctrl,
&prcm->cm1_abe_mcbsp1_clkctrl,
&prcm->cm1_abe_mcbsp2_clkctrl,
&prcm->cm1_abe_mcbsp3_clkctrl,
&prcm->cm1_abe_slimbus_clkctrl,
&prcm->cm1_abe_timer5_clkctrl,
&prcm->cm1_abe_timer6_clkctrl,
&prcm->cm1_abe_timer7_clkctrl,
&prcm->cm1_abe_timer8_clkctrl,
&prcm->cm1_abe_wdt3_clkctrl,
&prcm->cm_l4per_gptimer9_clkctrl,
&prcm->cm_l4per_gptimer10_clkctrl,
&prcm->cm_l4per_gptimer11_clkctrl,
&prcm->cm_l4per_gptimer3_clkctrl,
&prcm->cm_l4per_gptimer4_clkctrl,
&prcm->cm_l4per_hdq1w_clkctrl,
&prcm->cm_l4per_mcbsp4_clkctrl,
&prcm->cm_l4per_mcspi2_clkctrl,
&prcm->cm_l4per_mcspi3_clkctrl,
&prcm->cm_l4per_mcspi4_clkctrl,
&prcm->cm_l4per_mmcsd3_clkctrl,
&prcm->cm_l4per_mmcsd4_clkctrl,
&prcm->cm_l4per_mmcsd5_clkctrl,
&prcm->cm_l4per_uart1_clkctrl,
&prcm->cm_l4per_uart2_clkctrl,
&prcm->cm_l4per_uart4_clkctrl,
&prcm->cm_wkup_keyboard_clkctrl,
&prcm->cm_wkup_wdtimer2_clkctrl,
&prcm->cm_cam_iss_clkctrl,
&prcm->cm_cam_fdif_clkctrl,
&prcm->cm_dss_dss_clkctrl,
&prcm->cm_sgx_sgx_clkctrl,
&prcm->cm_l3init_hsusbhost_clkctrl,
&prcm->cm_l3init_fsusb_clkctrl,
0
};
/* Enable optional functional clock for ISS */
setbits_le32(&prcm->cm_cam_iss_clkctrl, ISS_CLKCTRL_OPTFCLKEN_MASK);
/* Enable all optional functional clocks of DSS */
setbits_le32(&prcm->cm_dss_dss_clkctrl, DSS_CLKCTRL_OPTFCLKEN_MASK);
do_enable_clocks(clk_domains_non_essential,
clk_modules_hw_auto_non_essential,
clk_modules_explicit_en_non_essential,
0);
/* Put camera module in no sleep mode */
clrsetbits_le32(&prcm->cm_cam_clkstctrl, MODULE_CLKCTRL_MODULEMODE_MASK,
CD_CLKCTRL_CLKTRCTRL_NO_SLEEP <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
}
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