[U-Boot] [PATCH v3 04/12] omap4: add clock support

Aneesh V
2011-07-16T12:53:14Z

Add support for:
1. DPLL locking
2. Initialization of clock domains and clock modules
3. Setting up the right voltage on voltage rails

This work draws upon previous work done for x-loader by:
Santosh Shilimkar <santosh.shilimkar@ti.com>
Rajendra Nayak <rnayak@ti.com>

Signed-off-by: Aneesh V <aneesh@ti.com>
---
V2:
* Use pre-calculated M & N values instead of calculated ones
* Changes due to make file changes
* Some corrections
* Do all clock initialization in SPL itself instead of differing some
work to u-boot

V3:
* Use struct for register addressing
* Support only Turbo OPP for MPU. OPP's above this need Smart Reflex
enabled
* Cleaned up the scale_vcore(). Now takes into account the differing
voltage offsets for different revisions of Phoenix.
* Removed references to deprecated utility functions - modify_reg_32() etc.
* Changed all spl_debug() to debug()
* Moved the host-program for calculating DPLL multiplier/divider to
tools/omap/ directory. Added more documentation
* Replaced calls to omap4_revision() with omap_revision()
* Some changes to IVA and ABE dpll locking code
---
arch/arm/cpu/armv7/omap4/Makefile | 1 +
arch/arm/cpu/armv7/omap4/board.c | 1 +
arch/arm/cpu/armv7/omap4/clocks.c | 809 +++++++++++++++++++++++++++
arch/arm/include/asm/arch-omap4/clocks.h | 664 ++++++++++++++++++++++
arch/arm/include/asm/arch-omap4/sys_proto.h | 8 +
arch/arm/include/asm/omap_common.h | 3 +
tools/omap/clocks_get_m_n.c | 197 +++++++
7 files changed, 1683 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/cpu/armv7/omap4/clocks.c
create mode 100644 arch/arm/include/asm/arch-omap4/clocks.h
create mode 100644 tools/omap/clocks_get_m_n.c

diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile
index 987dc9d..ac4b2a6 100644
--- a/arch/arm/cpu/armv7/omap4/Makefile
+++ b/arch/arm/cpu/armv7/omap4/Makefile
@@ -28,6 +28,7 @@ LIB = $(obj)lib$(SOC).o
SOBJS += lowlevel_init.o

COBJS += board.o
+COBJS += clocks.o
COBJS += mem.o
COBJS += sys_info.o

diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c
index 09861a9..1c26a66 100644
--- a/arch/arm/cpu/armv7/omap4/board.c
+++ b/arch/arm/cpu/armv7/omap4/board.c
@@ -154,6 +154,7 @@ void s_init(void)
init_omap4_revision();
watchdog_init();
set_mux_conf_regs();
+ prcm_init();
}

/*
diff --git a/arch/arm/cpu/armv7/omap4/clocks.c b/arch/arm/cpu/armv7/omap4/clocks.c
new file mode 100644
index 0000000..e8d3a52
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap4/clocks.c
@@ -0,0 +1,809 @@
+/*
+ *
+ * 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/arch/clocks.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/utils.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;
+
+static 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 1584 MHz - MPU clk at 792 MHz(OPP Turbo) */
+static const struct dpll_params mpu_dpll_params_1584mhz[NUM_SYS_CLKS] = {
+ {66, 0, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
+ {792, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
+ {330, 6, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
+ {165, 3, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
+ {396, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
+ {88, 2, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
+ {165, 7, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
+};
+
+/* dpll locked at 1200 MHz - MPU clk@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 */
+};
+
+static inline u32 __get_sys_clk_index(void)
+{
+ u32 ind;
+ /*
+ * For ES1 the ROM code calibration of sys clock is not reliable
+ * due to hw issue. So, use hard-coded value. If this value is not
+ * correct for any board over-ride this function in board file
+ * From ES2.0 onwards you will get this information from
+ * CM_SYS_CLKSEL
+ */
+ if (omap_revision() == OMAP4430_ES1_0)
+ ind = OMAP_SYS_CLK_IND_38_4_MHZ;
+ else {
+ /* SYS_CLKSEL - 1 to match the dpll param array indices */
+ ind = (readl(&prcm->cm_sys_clksel) &
+ CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1;
+ }
+ return ind;
+}
+
+u32 get_sys_clk_index(void)
+ __attribute__ ((weak, alias("__get_sys_clk_index")));
+
+u32 get_sys_clk_freq(void)
+{
+ u8 index = get_sys_clk_index();
+ return sys_clk_array[index];
+}
+
+static inline void do_bypass_dpll(u32 *const base)
+{
+ struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+ clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
+ CM_CLKMODE_DPLL_DPLL_EN_MASK,
+ DPLL_EN_FAST_RELOCK_BYPASS <<
+ CM_CLKMODE_DPLL_EN_SHIFT);
+}
+
+static inline void wait_for_bypass(u32 *const base)
+{
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll,
+ LDELAY)) {
+ printf("Bypassing DPLL failed %p\n", base);
+ }
+}
+
+static inline void do_lock_dpll(u32 *const base)
+{
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
+ CM_CLKMODE_DPLL_DPLL_EN_MASK,
+ DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT);
+}
+
+static inline void wait_for_lock(u32 *const base)
+{
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK,
+ &dpll_regs->cm_idlest_dpll, LDELAY)) {
+ printf("DPLL locking failed for %p\n", base);
+ hang();
+ }
+}
+
+static void do_setup_dpll(u32 *const base, const struct dpll_params *params,
+ u8 lock)
+{
+ u32 temp;
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ bypass_dpll(base);
+
+ /* Set M & N */
+ temp = readl(&dpll_regs->cm_clksel_dpll);
+
+ temp &= ~CM_CLKSEL_DPLL_M_MASK;
+ temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK;
+
+ temp &= ~CM_CLKSEL_DPLL_N_MASK;
+ temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK;
+
+ writel(temp, &dpll_regs->cm_clksel_dpll);
+
+ /* Lock */
+ if (lock)
+ do_lock_dpll(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);
+
+ /* Wait till the DPLL locks */
+ if (lock)
+ wait_for_lock(base);
+}
+
+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];
+ }
+}
+
+u32 omap4_ddr_clk(void)
+{
+ u32 ddr_clk, sys_clk_khz;
+ const struct dpll_params *core_dpll_params;
+
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+
+ core_dpll_params = get_core_dpll_params();
+
+ debug("sys_clk %d\n ", sys_clk_khz * 1000);
+
+ /* Find Core DPLL locked frequency first */
+ ddr_clk = sys_clk_khz * 2 * core_dpll_params->m /
+ (core_dpll_params->n + 1);
+ /*
+ * DDR frequency is PHY_ROOT_CLK/2
+ * PHY_ROOT_CLK = Fdpll/2/M2
+ */
+ ddr_clk = ddr_clk / 4 / core_dpll_params->m2;
+
+ ddr_clk *= 1000; /* convert to Hz */
+ debug("ddr_clk %d\n ", ddr_clk);
+
+ return ddr_clk;
+}
+
+static void setup_dplls(void)
+{
+ u32 sysclk_ind, temp;
+ const struct dpll_params *params;
+ debug("setup_dplls\n");
+
+ sysclk_ind = get_sys_clk_index();
+
+ /* CORE dpll */
+ params = get_core_dpll_params(); /* default - safest */
+ /*
+ * Do not lock the core DPLL now. Just set it up.
+ * Core DPLL will be locked after setting up EMIF
+ * using the FREQ_UPDATE method(freq_update_core())
+ */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK);
+ /* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */
+ temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) |
+ (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) |
+ (CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT);
+ writel(temp, &prcm->cm_clksel_core);
+ debug("Core DPLL configured\n");
+
+ /* lock PER dpll */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_per,
+ &per_dpll_params_1536mhz[sysclk_ind], DPLL_LOCK);
+ debug("PER DPLL locked\n");
+
+ /* MPU dpll */
+ if (omap_revision() == OMAP4430_ES1_0)
+ params = &mpu_dpll_params_1200mhz[sysclk_ind];
+ else
+ params = &mpu_dpll_params_1584mhz[sysclk_ind];
+ do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK);
+ debug("MPU DPLL locked\n");
+}
+
+static void setup_non_essential_dplls(void)
+{
+ u32 sys_clk_khz, abe_ref_clk;
+ u32 sysclk_ind, sd_div, num, den;
+ const struct dpll_params *params;
+
+ sysclk_ind = get_sys_clk_index();
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+
+ /* IVA */
+ clrsetbits_le32(&prcm->cm_bypclk_dpll_iva,
+ CM_BYPCLK_DPLL_IVA_CLKSEL_MASK, DPLL_IVA_CLKSEL_CORE_X2_DIV_2);
+
+ do_setup_dpll(&prcm->cm_clkmode_dpll_iva,
+ &iva_dpll_params_1862mhz[sysclk_ind], DPLL_LOCK);
+
+ /*
+ * USB:
+ * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
+ * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
+ * - where CLKINP is sys_clk in MHz
+ * Use CLKINP in KHz and adjust the denominator accordingly so
+ * that we have enough accuracy and at the same time no overflow
+ */
+ params = &usb_dpll_params_1920mhz[sysclk_ind];
+ num = params->m * sys_clk_khz;
+ den = (params->n + 1) * 250 * 1000;
+ num += den - 1;
+ sd_div = num / den;
+ clrsetbits_le32(&prcm->cm_clksel_dpll_usb,
+ CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
+ sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
+
+ /* Now setup the dpll with the regular function */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK);
+
+#ifdef CONFIG_SYS_OMAP4_ABE_SYSCK
+ params = &abe_dpll_params_sysclk_196608khz[sysclk_ind];
+ abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK;
+#else
+ params = &abe_dpll_params_32k_196608khz;
+ abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK;
+ /*
+ * We need to enable some additional options to achieve
+ * 196.608MHz from 32768 Hz
+ */
+ setbits_le32(&prcm->cm_clkmode_dpll_abe,
+ CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK|
+ CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK|
+ CM_CLKMODE_DPLL_LPMODE_EN_MASK|
+ CM_CLKMODE_DPLL_REGM4XEN_MASK);
+ /* Spend 4 REFCLK cycles at each stage */
+ clrsetbits_le32(&prcm->cm_clkmode_dpll_abe,
+ CM_CLKMODE_DPLL_RAMP_RATE_MASK,
+ 1 << CM_CLKMODE_DPLL_RAMP_RATE_SHIFT);
+#endif
+
+ /* Select the right reference clk */
+ clrsetbits_le32(&prcm->cm_abe_pll_ref_clksel,
+ CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK,
+ abe_ref_clk << CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT);
+ /* Lock the dpll */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_abe, params, DPLL_LOCK);
+}
+
+static void do_scale_vcore(u32 vcore_reg, u32 volt_mv)
+{
+ u32 temp, offset_code;
+ u32 step = 12660; /* 12.66 mV represented in uV */
+ u32 offset = volt_mv;
+
+ /* convert to uV for better accuracy in the calculations */
+ offset *= 1000;
+
+ 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 */
+ offset_code++;
+
+ debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
+ offset_code);
+
+ temp = SMPS_I2C_SLAVE_ADDR |
+ (vcore_reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) |
+ (offset_code << PRM_VC_VAL_BYPASS_DATA_SHIFT) |
+ PRM_VC_VAL_BYPASS_VALID_BIT;
+ writel(temp, &prcm->prm_vc_val_bypass);
+ if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0,
+ &prcm->prm_vc_val_bypass, LDELAY)) {
+ printf("Scaling voltage failed for 0x%x\n", vcore_reg);
+ }
+}
+
+/*
+ * 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
+ */
+static void scale_vcores(void)
+{
+ u32 volt, sys_clk_khz, cycles_hi, cycles_low, temp;
+
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+
+ /*
+ * Setup the dedicated I2C controller for Voltage Control
+ * I2C clk - high period 40% low period 60%
+ */
+ cycles_hi = sys_clk_khz * 4 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
+ cycles_low = sys_clk_khz * 6 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
+ /* values to be set in register - less by 5 & 7 respectively */
+ cycles_hi -= 5;
+ cycles_low -= 7;
+ temp = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) |
+ (cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT);
+ writel(temp, &prcm->prm_vc_cfg_i2c_clk);
+
+ /* Disable high speed mode and all advanced features */
+ writel(0x0, &prcm->prm_vc_cfg_i2c_mode);
+
+ /*
+ * VCORE 1 - 4430 : supplies 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 = 1417;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
+
+ /* VCORE 2 - supplies vdd_iva */
+ volt = 1200;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
+
+ /* VCORE 3 - supplies vdd_core */
+ volt = 1200;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE3, volt);
+}
+
+static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode)
+{
+ clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK,
+ enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT);
+ debug("Enable clock domain - 0x%08x\n", clkctrl_reg);
+}
+
+static inline void wait_for_clk_enable(u32 *clkctrl_addr)
+{
+ u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED;
+ u32 bound = LDELAY;
+
+ while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) ||
+ (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) {
+
+ clkctrl = readl(clkctrl_addr);
+ idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >>
+ MODULE_CLKCTRL_IDLEST_SHIFT;
+ if (--bound == 0) {
+ printf("Clock enable failed for 0x%p idlest 0x%x\n",
+ clkctrl_addr, clkctrl);
+ return;
+ }
+ }
+}
+
+static inline void enable_clock_module(u32 *const clkctrl_addr, u32 enable_mode,
+ u32 wait_for_enable)
+{
+ clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK,
+ enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT);
+ debug("Enable clock module - 0x%08x\n", clkctrl_addr);
+ if (wait_for_enable)
+ wait_for_clk_enable(clkctrl_addr);
+}
+
+/*
+ * Enable essential clock domains, modules and
+ * do some additional special settings needed
+ */
+static void enable_basic_clocks(void)
+{
+ u32 i, max = 100, wait_for_enable = 1;
+ 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_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_memif_emif_1_clkctrl,
+ &prcm->cm_memif_emif_2_clkctrl,
+ &prcm->cm_l3init_hsusbotg_clkctrl,
+ &prcm->cm_l3init_usbphy_clkctrl,
+ &prcm->cm_l4cfg_l4_cfg_clkctrl,
+ 0
+ };
+
+ u32 *const clk_modules_explicit_en_essential[] = {
+ &prcm->cm_l4per_gptimer2_clkctrl,
+ &prcm->cm_l3init_hsmmc1_clkctrl,
+ &prcm->cm_l3init_hsmmc2_clkctrl,
+ &prcm->cm_l4per_mcspi1_clkctrl,
+ &prcm->cm_wkup_gptimer1_clkctrl,
+ &prcm->cm_l4per_i2c1_clkctrl,
+ &prcm->cm_l4per_i2c2_clkctrl,
+ &prcm->cm_l4per_i2c3_clkctrl,
+ &prcm->cm_l4per_i2c4_clkctrl,
+ &prcm->cm_wkup_wdtimer2_clkctrl,
+ &prcm->cm_l4per_uart3_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);
+
+ /* Put the clock domains in SW_WKUP mode */
+ for (i = 0; (i < max) && clk_domains_essential[i]; i++) {
+ enable_clock_domain(clk_domains_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+ }
+
+ /* Clock modules that need to be put in HW_AUTO */
+ for (i = 0; (i < max) && clk_modules_hw_auto_essential[i]; i++) {
+ enable_clock_module(clk_modules_hw_auto_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
+ wait_for_enable);
+ };
+
+ /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
+ for (i = 0; (i < max) && clk_modules_explicit_en_essential[i]; i++) {
+ enable_clock_module(clk_modules_explicit_en_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
+ wait_for_enable);
+ };
+
+ /* Put the clock domains in HW_AUTO mode now */
+ for (i = 0; (i < max) && clk_domains_essential[i]; i++) {
+ enable_clock_domain(clk_domains_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+ }
+}
+
+/*
+ * Enable non-essential clock domains, modules and
+ * do some additional special settings needed
+ */
+static void enable_non_essential_clocks(void)
+{
+ u32 i, max = 100, wait_for_enable = 0;
+ 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);
+
+
+ /* Put the clock domains in SW_WKUP mode */
+ for (i = 0; (i < max) && clk_domains_non_essential[i]; i++) {
+ enable_clock_domain(clk_domains_non_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+ }
+
+ /* Clock modules that need to be put in HW_AUTO */
+ for (i = 0; (i < max) && clk_modules_hw_auto_non_essential[i]; i++) {
+ enable_clock_module(clk_modules_hw_auto_non_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
+ wait_for_enable);
+ };
+
+ /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
+ for (i = 0; (i < max) && clk_modules_explicit_en_non_essential[i];
+ i++) {
+ enable_clock_module(clk_modules_explicit_en_non_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
+ wait_for_enable);
+ };
+
+ /* Put the clock domains in HW_AUTO mode now */
+ for (i = 0; (i < max) && clk_domains_non_essential[i]; i++) {
+ enable_clock_domain(clk_domains_non_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+ }
+
+ /* 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);
+}
+
+
+void freq_update_core(void)
+{
+ u32 freq_config1 = 0;
+ const struct dpll_params *core_dpll_params;
+
+ core_dpll_params = get_core_dpll_params();
+ /* Put EMIF clock domain in sw wakeup mode */
+ enable_clock_domain(&prcm->cm_memif_clkstctrl,
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+ wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
+ wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
+
+ freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK |
+ SHADOW_FREQ_CONFIG1_DLL_RESET_MASK;
+
+ freq_config1 |= (DPLL_EN_LOCK << SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT) &
+ SHADOW_FREQ_CONFIG1_DPLL_EN_MASK;
+
+ freq_config1 |= (core_dpll_params->m2 <<
+ SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT) &
+ SHADOW_FREQ_CONFIG1_M2_DIV_MASK;
+
+ writel(freq_config1, &prcm->cm_shadow_freq_config1);
+ if (!wait_on_value(SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK, 0,
+ &prcm->cm_shadow_freq_config1, LDELAY)) {
+ puts("FREQ UPDATE procedure failed!!");
+ hang();
+ }
+
+ /* Put EMIF clock domain back in hw auto mode */
+ enable_clock_domain(&prcm->cm_memif_clkstctrl,
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+ wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
+ wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
+}
+
+void bypass_dpll(u32 *const base)
+{
+ do_bypass_dpll(base);
+ wait_for_bypass(base);
+}
+
+void lock_dpll(u32 *const base)
+{
+ do_lock_dpll(base);
+ wait_for_lock(base);
+}
+
+void prcm_init(void)
+{
+ switch (omap4_hw_init_context()) {
+ case OMAP_INIT_CONTEXT_SPL:
+ case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
+ scale_vcores();
+ setup_dplls();
+ enable_basic_clocks();
+ setup_non_essential_dplls();
+ enable_non_essential_clocks();
+ break;
+ default:
+ break;
+ }
+}
diff --git a/arch/arm/include/asm/arch-omap4/clocks.h b/arch/arm/include/asm/arch-omap4/clocks.h
new file mode 100644
index 0000000..71db39c
--- /dev/null
+++ b/arch/arm/include/asm/arch-omap4/clocks.h
@@ -0,0 +1,664 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@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
+ */
+#ifndef _CLOCKS_OMAP4_H_
+#define _CLOCKS_OMAP4_H_
+#include <common.h>
+
+/*
+ * Assuming a maximum of 1.5 GHz ARM speed and a minimum of 2 cycles per
+ * loop, allow for a minimum of 2 ms wait (in reality the wait will be
+ * much more than that)
+ */
+#define LDELAY 1000000
+
+#define CM_CLKMODE_DPLL_CORE (OMAP44XX_L4_CORE_BASE + 0x4120)
+#define CM_CLKMODE_DPLL_PER (OMAP44XX_L4_CORE_BASE + 0x8140)
+#define CM_CLKMODE_DPLL_MPU (OMAP44XX_L4_CORE_BASE + 0x4160)
+#define CM_CLKSEL_CORE (OMAP44XX_L4_CORE_BASE + 0x4100)
+
+struct omap4_prcm_regs {
+ /* cm1.ckgen */
+ u32 cm_clksel_core;
+ u32 pad001[1];
+ u32 cm_clksel_abe;
+ u32 pad002[1];
+ u32 cm_dll_ctrl;
+ u32 pad003[3];
+ u32 cm_clkmode_dpll_core;
+ u32 cm_idlest_dpll_core;
+ u32 cm_autoidle_dpll_core;
+ u32 cm_clksel_dpll_core;
+ u32 cm_div_m2_dpll_core;
+ u32 cm_div_m3_dpll_core;
+ u32 cm_div_m4_dpll_core;
+ u32 cm_div_m5_dpll_core;
+ u32 cm_div_m6_dpll_core;
+ u32 cm_div_m7_dpll_core;
+ u32 cm_ssc_deltamstep_dpll_core;
+ u32 cm_ssc_modfreqdiv_dpll_core;
+ u32 cm_emu_override_dpll_core;
+ u32 pad004[3];
+ u32 cm_clkmode_dpll_mpu;
+ u32 cm_idlest_dpll_mpu;
+ u32 cm_autoidle_dpll_mpu;
+ u32 cm_clksel_dpll_mpu;
+ u32 cm_div_m2_dpll_mpu;
+ u32 pad005[5];
+ u32 cm_ssc_deltamstep_dpll_mpu;
+ u32 cm_ssc_modfreqdiv_dpll_mpu;
+ u32 pad006[3];
+ u32 cm_bypclk_dpll_mpu;
+ u32 cm_clkmode_dpll_iva;
+ u32 cm_idlest_dpll_iva;
+ u32 cm_autoidle_dpll_iva;
+ u32 cm_clksel_dpll_iva;
+ u32 pad007[2];
+ u32 cm_div_m4_dpll_iva;
+ u32 cm_div_m5_dpll_iva;
+ u32 pad008[2];
+ u32 cm_ssc_deltamstep_dpll_iva;
+ u32 cm_ssc_modfreqdiv_dpll_iva;
+ u32 pad009[3];
+ u32 cm_bypclk_dpll_iva;
+ u32 cm_clkmode_dpll_abe;
+ u32 cm_idlest_dpll_abe;
+ u32 cm_autoidle_dpll_abe;
+ u32 cm_clksel_dpll_abe;
+ u32 cm_div_m2_dpll_abe;
+ u32 cm_div_m3_dpll_abe;
+ u32 pad010[4];
+ u32 cm_ssc_deltamstep_dpll_abe;
+ u32 cm_ssc_modfreqdiv_dpll_abe;
+ u32 pad011[4];
+ u32 cm_clkmode_dpll_ddrphy;
+ u32 cm_idlest_dpll_ddrphy;
+ u32 cm_autoidle_dpll_ddrphy;
+ u32 cm_clksel_dpll_ddrphy;
+ u32 cm_div_m2_dpll_ddrphy;
+ u32 pad012[1];
+ u32 cm_div_m4_dpll_ddrphy;
+ u32 cm_div_m5_dpll_ddrphy;
+ u32 cm_div_m6_dpll_ddrphy;
+ u32 pad013[1];
+ u32 cm_ssc_deltamstep_dpll_ddrphy;
+ u32 pad014[5];
+ u32 cm_shadow_freq_config1;
+
+ /* cm1.dsp */
+ u32 pad015[103];
+ u32 cm_dsp_clkstctrl;
+ u32 pad016[7];
+ u32 cm_dsp_dsp_clkctrl;
+
+ /* cm1.abe */
+ u32 pad017[55];
+ u32 cm1_abe_clkstctrl;
+ u32 pad018[7];
+ u32 cm1_abe_l4abe_clkctrl;
+ u32 pad019[1];
+ u32 cm1_abe_aess_clkctrl;
+ u32 pad020[1];
+ u32 cm1_abe_pdm_clkctrl;
+ u32 pad021[1];
+ u32 cm1_abe_dmic_clkctrl;
+ u32 pad022[1];
+ u32 cm1_abe_mcasp_clkctrl;
+ u32 pad023[1];
+ u32 cm1_abe_mcbsp1_clkctrl;
+ u32 pad024[1];
+ u32 cm1_abe_mcbsp2_clkctrl;
+ u32 pad025[1];
+ u32 cm1_abe_mcbsp3_clkctrl;
+ u32 pad026[1];
+ u32 cm1_abe_slimbus_clkctrl;
+ u32 pad027[1];
+ u32 cm1_abe_timer5_clkctrl;
+ u32 pad028[1];
+ u32 cm1_abe_timer6_clkctrl;
+ u32 pad029[1];
+ u32 cm1_abe_timer7_clkctrl;
+ u32 pad030[1];
+ u32 cm1_abe_timer8_clkctrl;
+ u32 pad031[1];
+ u32 cm1_abe_wdt3_clkctrl;
+
+ /* cm2.ckgen */
+ u32 pad032[3805];
+ u32 cm_clksel_mpu_m3_iss_root;
+ u32 cm_clksel_usb_60mhz;
+ u32 cm_scale_fclk;
+ u32 pad033[1];
+ u32 cm_core_dvfs_perf1;
+ u32 cm_core_dvfs_perf2;
+ u32 cm_core_dvfs_perf3;
+ u32 cm_core_dvfs_perf4;
+ u32 pad034[1];
+ u32 cm_core_dvfs_current;
+ u32 cm_iva_dvfs_perf_tesla;
+ u32 cm_iva_dvfs_perf_ivahd;
+ u32 cm_iva_dvfs_perf_abe;
+ u32 pad035[1];
+ u32 cm_iva_dvfs_current;
+ u32 pad036[1];
+ u32 cm_clkmode_dpll_per;
+ u32 cm_idlest_dpll_per;
+ u32 cm_autoidle_dpll_per;
+ u32 cm_clksel_dpll_per;
+ u32 cm_div_m2_dpll_per;
+ u32 cm_div_m3_dpll_per;
+ u32 cm_div_m4_dpll_per;
+ u32 cm_div_m5_dpll_per;
+ u32 cm_div_m6_dpll_per;
+ u32 cm_div_m7_dpll_per;
+ u32 cm_ssc_deltamstep_dpll_per;
+ u32 cm_ssc_modfreqdiv_dpll_per;
+ u32 cm_emu_override_dpll_per;
+ u32 pad037[3];
+ u32 cm_clkmode_dpll_usb;
+ u32 cm_idlest_dpll_usb;
+ u32 cm_autoidle_dpll_usb;
+ u32 cm_clksel_dpll_usb;
+ u32 cm_div_m2_dpll_usb;
+ u32 pad038[5];
+ u32 cm_ssc_deltamstep_dpll_usb;
+ u32 cm_ssc_modfreqdiv_dpll_usb;
+ u32 pad039[1];
+ u32 cm_clkdcoldo_dpll_usb;
+ u32 pad040[2];
+ u32 cm_clkmode_dpll_unipro;
+ u32 cm_idlest_dpll_unipro;
+ u32 cm_autoidle_dpll_unipro;
+ u32 cm_clksel_dpll_unipro;
+ u32 cm_div_m2_dpll_unipro;
+ u32 pad041[5];
+ u32 cm_ssc_deltamstep_dpll_unipro;
+ u32 cm_ssc_modfreqdiv_dpll_unipro;
+
+ /* cm2.core */
+ u32 pad0411[324];
+ u32 cm_l3_1_clkstctrl;
+ u32 pad042[1];
+ u32 cm_l3_1_dynamicdep;
+ u32 pad043[5];
+ u32 cm_l3_1_l3_1_clkctrl;
+ u32 pad044[55];
+ u32 cm_l3_2_clkstctrl;
+ u32 pad045[1];
+ u32 cm_l3_2_dynamicdep;
+ u32 pad046[5];
+ u32 cm_l3_2_l3_2_clkctrl;
+ u32 pad047[1];
+ u32 cm_l3_2_gpmc_clkctrl;
+ u32 pad048[1];
+ u32 cm_l3_2_ocmc_ram_clkctrl;
+ u32 pad049[51];
+ u32 cm_mpu_m3_clkstctrl;
+ u32 cm_mpu_m3_staticdep;
+ u32 cm_mpu_m3_dynamicdep;
+ u32 pad050[5];
+ u32 cm_mpu_m3_mpu_m3_clkctrl;
+ u32 pad051[55];
+ u32 cm_sdma_clkstctrl;
+ u32 cm_sdma_staticdep;
+ u32 cm_sdma_dynamicdep;
+ u32 pad052[5];
+ u32 cm_sdma_sdma_clkctrl;
+ u32 pad053[55];
+ u32 cm_memif_clkstctrl;
+ u32 pad054[7];
+ u32 cm_memif_dmm_clkctrl;
+ u32 pad055[1];
+ u32 cm_memif_emif_fw_clkctrl;
+ u32 pad056[1];
+ u32 cm_memif_emif_1_clkctrl;
+ u32 pad057[1];
+ u32 cm_memif_emif_2_clkctrl;
+ u32 pad058[1];
+ u32 cm_memif_dll_clkctrl;
+ u32 pad059[3];
+ u32 cm_memif_emif_h1_clkctrl;
+ u32 pad060[1];
+ u32 cm_memif_emif_h2_clkctrl;
+ u32 pad061[1];
+ u32 cm_memif_dll_h_clkctrl;
+ u32 pad062[39];
+ u32 cm_c2c_clkstctrl;
+ u32 cm_c2c_staticdep;
+ u32 cm_c2c_dynamicdep;
+ u32 pad063[5];
+ u32 cm_c2c_sad2d_clkctrl;
+ u32 pad064[1];
+ u32 cm_c2c_modem_icr_clkctrl;
+ u32 pad065[1];
+ u32 cm_c2c_sad2d_fw_clkctrl;
+ u32 pad066[51];
+ u32 cm_l4cfg_clkstctrl;
+ u32 pad067[1];
+ u32 cm_l4cfg_dynamicdep;
+ u32 pad068[5];
+ u32 cm_l4cfg_l4_cfg_clkctrl;
+ u32 pad069[1];
+ u32 cm_l4cfg_hw_sem_clkctrl;
+ u32 pad070[1];
+ u32 cm_l4cfg_mailbox_clkctrl;
+ u32 pad071[1];
+ u32 cm_l4cfg_sar_rom_clkctrl;
+ u32 pad072[49];
+ u32 cm_l3instr_clkstctrl;
+ u32 pad073[7];
+ u32 cm_l3instr_l3_3_clkctrl;
+ u32 pad074[1];
+ u32 cm_l3instr_l3_instr_clkctrl;
+ u32 pad075[5];
+ u32 cm_l3instr_intrconn_wp1_clkctrl;
+
+
+ /* cm2.ivahd */
+ u32 pad076[47];
+ u32 cm_ivahd_clkstctrl;
+ u32 pad077[7];
+ u32 cm_ivahd_ivahd_clkctrl;
+ u32 pad078[1];
+ u32 cm_ivahd_sl2_clkctrl;
+
+ /* cm2.cam */
+ u32 pad079[53];
+ u32 cm_cam_clkstctrl;
+ u32 pad080[7];
+ u32 cm_cam_iss_clkctrl;
+ u32 pad081[1];
+ u32 cm_cam_fdif_clkctrl;
+
+ /* cm2.dss */
+ u32 pad082[53];
+ u32 cm_dss_clkstctrl;
+ u32 pad083[7];
+ u32 cm_dss_dss_clkctrl;
+
+ /* cm2.sgx */
+ u32 pad084[55];
+ u32 cm_sgx_clkstctrl;
+ u32 pad085[7];
+ u32 cm_sgx_sgx_clkctrl;
+
+ /* cm2.l3init */
+ u32 pad086[55];
+ u32 cm_l3init_clkstctrl;
+
+ /* cm2.l3init */
+ u32 pad087[9];
+ u32 cm_l3init_hsmmc1_clkctrl;
+ u32 pad088[1];
+ u32 cm_l3init_hsmmc2_clkctrl;
+ u32 pad089[1];
+ u32 cm_l3init_hsi_clkctrl;
+ u32 pad090[7];
+ u32 cm_l3init_hsusbhost_clkctrl;
+ u32 pad091[1];
+ u32 cm_l3init_hsusbotg_clkctrl;
+ u32 pad092[1];
+ u32 cm_l3init_hsusbtll_clkctrl;
+ u32 pad093[3];
+ u32 cm_l3init_p1500_clkctrl;
+ u32 pad094[21];
+ u32 cm_l3init_fsusb_clkctrl;
+ u32 pad095[3];
+ u32 cm_l3init_usbphy_clkctrl;
+
+ /* cm2.l4per */
+ u32 pad096[7];
+ u32 cm_l4per_clkstctrl;
+ u32 pad097[1];
+ u32 cm_l4per_dynamicdep;
+ u32 pad098[5];
+ u32 cm_l4per_adc_clkctrl;
+ u32 pad100[1];
+ u32 cm_l4per_gptimer10_clkctrl;
+ u32 pad101[1];
+ u32 cm_l4per_gptimer11_clkctrl;
+ u32 pad102[1];
+ u32 cm_l4per_gptimer2_clkctrl;
+ u32 pad103[1];
+ u32 cm_l4per_gptimer3_clkctrl;
+ u32 pad104[1];
+ u32 cm_l4per_gptimer4_clkctrl;
+ u32 pad105[1];
+ u32 cm_l4per_gptimer9_clkctrl;
+ u32 pad106[1];
+ u32 cm_l4per_elm_clkctrl;
+ u32 pad107[1];
+ u32 cm_l4per_gpio2_clkctrl;
+ u32 pad108[1];
+ u32 cm_l4per_gpio3_clkctrl;
+ u32 pad109[1];
+ u32 cm_l4per_gpio4_clkctrl;
+ u32 pad110[1];
+ u32 cm_l4per_gpio5_clkctrl;
+ u32 pad111[1];
+ u32 cm_l4per_gpio6_clkctrl;
+ u32 pad112[1];
+ u32 cm_l4per_hdq1w_clkctrl;
+ u32 pad113[1];
+ u32 cm_l4per_hecc1_clkctrl;
+ u32 pad114[1];
+ u32 cm_l4per_hecc2_clkctrl;
+ u32 pad115[1];
+ u32 cm_l4per_i2c1_clkctrl;
+ u32 pad116[1];
+ u32 cm_l4per_i2c2_clkctrl;
+ u32 pad117[1];
+ u32 cm_l4per_i2c3_clkctrl;
+ u32 pad118[1];
+ u32 cm_l4per_i2c4_clkctrl;
+ u32 pad119[1];
+ u32 cm_l4per_l4per_clkctrl;
+ u32 pad1191[3];
+ u32 cm_l4per_mcasp2_clkctrl;
+ u32 pad120[1];
+ u32 cm_l4per_mcasp3_clkctrl;
+ u32 pad121[1];
+ u32 cm_l4per_mcbsp4_clkctrl;
+ u32 pad122[1];
+ u32 cm_l4per_mgate_clkctrl;
+ u32 pad123[1];
+ u32 cm_l4per_mcspi1_clkctrl;
+ u32 pad124[1];
+ u32 cm_l4per_mcspi2_clkctrl;
+ u32 pad125[1];
+ u32 cm_l4per_mcspi3_clkctrl;
+ u32 pad126[1];
+ u32 cm_l4per_mcspi4_clkctrl;
+ u32 pad127[5];
+ u32 cm_l4per_mmcsd3_clkctrl;
+ u32 pad128[1];
+ u32 cm_l4per_mmcsd4_clkctrl;
+ u32 pad129[1];
+ u32 cm_l4per_msprohg_clkctrl;
+ u32 pad130[1];
+ u32 cm_l4per_slimbus2_clkctrl;
+ u32 pad131[1];
+ u32 cm_l4per_uart1_clkctrl;
+ u32 pad132[1];
+ u32 cm_l4per_uart2_clkctrl;
+ u32 pad133[1];
+ u32 cm_l4per_uart3_clkctrl;
+ u32 pad134[1];
+ u32 cm_l4per_uart4_clkctrl;
+ u32 pad135[1];
+ u32 cm_l4per_mmcsd5_clkctrl;
+ u32 pad136[1];
+ u32 cm_l4per_i2c5_clkctrl;
+ u32 pad137[5];
+ u32 cm_l4sec_clkstctrl;
+ u32 cm_l4sec_staticdep;
+ u32 cm_l4sec_dynamicdep;
+ u32 pad138[5];
+ u32 cm_l4sec_aes1_clkctrl;
+ u32 pad139[1];
+ u32 cm_l4sec_aes2_clkctrl;
+ u32 pad140[1];
+ u32 cm_l4sec_des3des_clkctrl;
+ u32 pad141[1];
+ u32 cm_l4sec_pkaeip29_clkctrl;
+ u32 pad142[1];
+ u32 cm_l4sec_rng_clkctrl;
+ u32 pad143[1];
+ u32 cm_l4sec_sha2md51_clkctrl;
+ u32 pad144[3];
+ u32 cm_l4sec_cryptodma_clkctrl;
+ u32 pad145[776841];
+
+ /* l4 wkup regs */
+ u32 pad201[6211];
+ u32 cm_abe_pll_ref_clksel;
+ u32 cm_sys_clksel;
+ u32 pad202[1467];
+ u32 cm_wkup_clkstctrl;
+ u32 pad203[7];
+ u32 cm_wkup_l4wkup_clkctrl;
+ u32 pad204;
+ u32 cm_wkup_wdtimer1_clkctrl;
+ u32 pad205;
+ u32 cm_wkup_wdtimer2_clkctrl;
+ u32 pad206;
+ u32 cm_wkup_gpio1_clkctrl;
+ u32 pad207;
+ u32 cm_wkup_gptimer1_clkctrl;
+ u32 pad208;
+ u32 cm_wkup_gptimer12_clkctrl;
+ u32 pad209;
+ u32 cm_wkup_synctimer_clkctrl;
+ u32 pad210;
+ u32 cm_wkup_usim_clkctrl;
+ u32 pad211;
+ u32 cm_wkup_sarram_clkctrl;
+ u32 pad212[5];
+ u32 cm_wkup_keyboard_clkctrl;
+ u32 pad213;
+ u32 cm_wkup_rtc_clkctrl;
+ u32 pad214;
+ u32 cm_wkup_bandgap_clkctrl;
+ u32 pad215[197];
+ u32 prm_vc_val_bypass;
+ u32 prm_vc_cfg_channel;
+ u32 prm_vc_cfg_i2c_mode;
+ u32 prm_vc_cfg_i2c_clk;
+
+};
+
+/* DPLL register offsets */
+#define CM_CLKMODE_DPLL 0
+#define CM_IDLEST_DPLL 0x4
+#define CM_AUTOIDLE_DPLL 0x8
+#define CM_CLKSEL_DPLL 0xC
+#define CM_DIV_M2_DPLL 0x10
+#define CM_DIV_M3_DPLL 0x14
+#define CM_DIV_M4_DPLL 0x18
+#define CM_DIV_M5_DPLL 0x1C
+#define CM_DIV_M6_DPLL 0x20
+#define CM_DIV_M7_DPLL 0x24
+
+#define DPLL_CLKOUT_DIV_MASK 0x1F /* post-divider mask */
+
+/* CM_CLKMODE_DPLL */
+#define CM_CLKMODE_DPLL_REGM4XEN_SHIFT 11
+#define CM_CLKMODE_DPLL_REGM4XEN_MASK (1 << 11)
+#define CM_CLKMODE_DPLL_LPMODE_EN_SHIFT 10
+#define CM_CLKMODE_DPLL_LPMODE_EN_MASK (1 << 10)
+#define CM_CLKMODE_DPLL_RELOCK_RAMP_EN_SHIFT 9
+#define CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK (1 << 9)
+#define CM_CLKMODE_DPLL_DRIFTGUARD_EN_SHIFT 8
+#define CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK (1 << 8)
+#define CM_CLKMODE_DPLL_RAMP_RATE_SHIFT 5
+#define CM_CLKMODE_DPLL_RAMP_RATE_MASK (0x7 << 5)
+#define CM_CLKMODE_DPLL_EN_SHIFT 0
+#define CM_CLKMODE_DPLL_EN_MASK (0x7 << 0)
+
+#define CM_CLKMODE_DPLL_DPLL_EN_SHIFT 0
+#define CM_CLKMODE_DPLL_DPLL_EN_MASK 7
+
+#define DPLL_EN_STOP 1
+#define DPLL_EN_MN_BYPASS 4
+#define DPLL_EN_LOW_POWER_BYPASS 5
+#define DPLL_EN_FAST_RELOCK_BYPASS 6
+#define DPLL_EN_LOCK 7
+
+/* CM_IDLEST_DPLL fields */
+#define ST_DPLL_CLK_MASK 1
+
+/* CM_CLKSEL_DPLL */
+#define CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT 24
+#define CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK (0xFF << 24)
+#define CM_CLKSEL_DPLL_M_SHIFT 8
+#define CM_CLKSEL_DPLL_M_MASK (0x7FF << 8)
+#define CM_CLKSEL_DPLL_N_SHIFT 0
+#define CM_CLKSEL_DPLL_N_MASK 0x7F
+
+#define OMAP4_DPLL_MAX_N 127
+
+/* CM_SYS_CLKSEL */
+#define CM_SYS_CLKSEL_SYS_CLKSEL_MASK 7
+
+/* CM_CLKSEL_CORE */
+#define CLKSEL_CORE_SHIFT 0
+#define CLKSEL_L3_SHIFT 4
+#define CLKSEL_L4_SHIFT 8
+
+#define CLKSEL_CORE_X2_DIV_1 0
+#define CLKSEL_L3_CORE_DIV_2 1
+#define CLKSEL_L4_L3_DIV_2 1
+
+/* CM_ABE_PLL_REF_CLKSEL */
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT 0
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK 1
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK 0
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK 1
+
+/* CM_BYPCLK_DPLL_IVA */
+#define CM_BYPCLK_DPLL_IVA_CLKSEL_SHIFT 0
+#define CM_BYPCLK_DPLL_IVA_CLKSEL_MASK 3
+
+#define DPLL_IVA_CLKSEL_CORE_X2_DIV_2 1
+
+/* CM_SHADOW_FREQ_CONFIG1 */
+#define SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK 1
+#define SHADOW_FREQ_CONFIG1_DLL_OVERRIDE_MASK 4
+#define SHADOW_FREQ_CONFIG1_DLL_RESET_MASK 8
+
+#define SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT 8
+#define SHADOW_FREQ_CONFIG1_DPLL_EN_MASK (7 << 8)
+
+#define SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT 11
+#define SHADOW_FREQ_CONFIG1_M2_DIV_MASK (0x1F << 11)
+
+/*CM_<clock_domain>__CLKCTRL */
+#define CD_CLKCTRL_CLKTRCTRL_SHIFT 0
+#define CD_CLKCTRL_CLKTRCTRL_MASK 3
+
+#define CD_CLKCTRL_CLKTRCTRL_NO_SLEEP 0
+#define CD_CLKCTRL_CLKTRCTRL_SW_SLEEP 1
+#define CD_CLKCTRL_CLKTRCTRL_SW_WKUP 2
+#define CD_CLKCTRL_CLKTRCTRL_HW_AUTO 3
+
+
+/* CM_<clock_domain>_<module>_CLKCTRL */
+#define MODULE_CLKCTRL_MODULEMODE_SHIFT 0
+#define MODULE_CLKCTRL_MODULEMODE_MASK 3
+#define MODULE_CLKCTRL_IDLEST_SHIFT 16
+#define MODULE_CLKCTRL_IDLEST_MASK (3 << 16)
+
+#define MODULE_CLKCTRL_MODULEMODE_SW_DISABLE 0
+#define MODULE_CLKCTRL_MODULEMODE_HW_AUTO 1
+#define MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN 2
+
+#define MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL 0
+#define MODULE_CLKCTRL_IDLEST_TRANSITIONING 1
+#define MODULE_CLKCTRL_IDLEST_IDLE 2
+#define MODULE_CLKCTRL_IDLEST_DISABLED 3
+
+/* CM_L4PER_GPIO4_CLKCTRL */
+#define GPIO4_CLKCTRL_OPTFCLKEN_MASK (1 << 8)
+
+/* CM_L3INIT_HSMMCn_CLKCTRL */
+#define HSMMC_CLKCTRL_CLKSEL_MASK (1 << 24)
+
+/* CM_WKUP_GPTIMER1_CLKCTRL */
+#define GPTIMER1_CLKCTRL_CLKSEL_MASK (1 << 24)
+
+/* CM_CAM_ISS_CLKCTRL */
+#define ISS_CLKCTRL_OPTFCLKEN_MASK (1 << 8)
+
+/* CM_DSS_DSS_CLKCTRL */
+#define DSS_CLKCTRL_OPTFCLKEN_MASK 0xF00
+
+/* CM_L3INIT_USBPHY_CLKCTRL */
+#define USBPHY_CLKCTRL_OPTFCLKEN_PHY_48M_MASK 8
+
+/* Clock frequencies */
+#define OMAP_SYS_CLK_FREQ_38_4_MHZ 38400000
+#define OMAP_SYS_CLK_IND_38_4_MHZ 6
+#define OMAP_32K_CLK_FREQ 32768
+
+/* PRM_VC_CFG_I2C_CLK */
+#define PRM_VC_CFG_I2C_CLK_SCLH_SHIFT 0
+#define PRM_VC_CFG_I2C_CLK_SCLH_MASK 0xFF
+#define PRM_VC_CFG_I2C_CLK_SCLL_SHIFT 8
+#define PRM_VC_CFG_I2C_CLK_SCLL_MASK (0xFF << 8)
+
+/* PRM_VC_VAL_BYPASS */
+#define PRM_VC_I2C_CHANNEL_FREQ_KHZ 400
+
+#define PRM_VC_VAL_BYPASS_VALID_BIT 0x1000000
+#define PRM_VC_VAL_BYPASS_SLAVEADDR_SHIFT 0
+#define PRM_VC_VAL_BYPASS_SLAVEADDR_MASK 0x7F
+#define PRM_VC_VAL_BYPASS_REGADDR_SHIFT 8
+#define PRM_VC_VAL_BYPASS_REGADDR_MASK 0xFF
+#define PRM_VC_VAL_BYPASS_DATA_SHIFT 16
+#define PRM_VC_VAL_BYPASS_DATA_MASK 0xFF
+
+#define SMPS_I2C_SLAVE_ADDR 0x12
+#define SMPS_REG_ADDR_VCORE1 0x55
+#define SMPS_REG_ADDR_VCORE2 0x5B
+#define SMPS_REG_ADDR_VCORE3 0x61
+
+#define PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV 607700
+#define PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV 709000
+
+/* Defines for DPLL setup */
+#define DPLL_LOCKED_FREQ_TOLERANCE_0 0
+#define DPLL_LOCKED_FREQ_TOLERANCE_500_KHZ 500
+#define DPLL_LOCKED_FREQ_TOLERANCE_1_MHZ 1000
+
+#define DPLL_NO_LOCK 0
+#define DPLL_LOCK 1
+
+#define NUM_SYS_CLKS 7
+
+struct dpll_regs {
+ u32 cm_clkmode_dpll;
+ u32 cm_idlest_dpll;
+ u32 cm_autoidle_dpll;
+ u32 cm_clksel_dpll;
+ u32 cm_div_m2_dpll;
+ u32 cm_div_m3_dpll;
+ u32 cm_div_m4_dpll;
+ u32 cm_div_m5_dpll;
+ u32 cm_div_m6_dpll;
+ u32 cm_div_m7_dpll;
+};
+
+/* DPLL parameter table */
+struct dpll_params {
+ u32 m;
+ u32 n;
+ u8 m2;
+ u8 m3;
+ u8 m4;
+ u8 m5;
+ u8 m6;
+ u8 m7;
+};
+
+#endif /* _CLOCKS_OMAP4_H_ */
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index c10fa18..f871921 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -22,6 +22,7 @@
#define _SYS_PROTO_H_

#include <asm/arch/omap4.h>
+#include <asm/arch/clocks.h>
#include <asm/io.h>
#include <asm/omap_common.h>
#include <asm/arch/mux_omap4.h>
@@ -31,6 +32,8 @@ struct omap_sysinfo {
};
extern const struct omap_sysinfo sysinfo;

+extern struct omap4_prcm_regs *const prcm;
+
void gpmc_init(void);
void watchdog_init(void);
u32 get_device_type(void);
@@ -41,6 +44,11 @@ u32 wait_on_value(u32, u32, void *, u32);
void sdelay(unsigned long);
void set_pl310_ctrl_reg(u32 val);
void omap_rev_string(char *omap4_rev_string);
+void prcm_init(void);
+void bypass_dpll(u32 *const base);
+void freq_update_core(void);
+u32 get_sys_clk_freq(void);
+u32 omap4_ddr_clk(void);

static inline u32 running_from_sdram(void)
{
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index d80f665..33caa4e 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -25,6 +25,9 @@
#ifndef _OMAP_COMMON_H_
#define _OMAP_COMMON_H_

+/* Max value for DPLL multiplier M */
+#define OMAP_DPLL_MAX_N 127
+
/* HW Init Context */
#define OMAP_INIT_CONTEXT_SPL 0
#define OMAP_INIT_CONTEXT_UBOOT_FROM_NOR 1
diff --git a/tools/omap/clocks_get_m_n.c b/tools/omap/clocks_get_m_n.c
new file mode 100644
index 0000000..cfc1760
--- /dev/null
+++ b/tools/omap/clocks_get_m_n.c
@@ -0,0 +1,197 @@
+/*
+ * Program for finding M & N values for DPLLs
+ * To be run on Host PC
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@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 <stdlib.h>
+#include <stdio.h>
+typedef unsigned int u32;
+#define MAX_N 127
+
+/*
+ * get_m_n_optimized() - Finds optimal DPLL multiplier(M) and divider(N)
+ * values based on the reference frequency, required output frequency,
+ * maximum tolerance for output frequency etc.
+ *
+ * target_freq_khz - output frequency required in KHz
+ * ref_freq_khz - reference(input) frequency in KHz
+ * m - pointer to computed M value
+ * n - pointer to computed N value
+ * tolerance_khz - tolerance for the output frequency. When the algorithm
+ * succeeds in finding vialble M and N values the corresponding output
+ * frequency will be in the range:
+ * [target_freq_khz - tolerance_khz, target_freq_khz]
+ *
+ * Formula:
+ * Fdpll = (2 * M * Fref) / (N + 1)
+ *
+ * Considerations for lock-time:
+ * - Smaller the N, better lock-time, especially lock-time will be
+ * - For acceptable lock-times:
+ * Fref / (M + 1) >= 1 MHz
+ *
+ * Considerations for power:
+ * - The difference in power for different N values giving the same
+ * output is negligible. So, we optimize for lock-time
+ *
+ * Hard-constraints:
+ * - N can not be greater than 127(7 bit field for representing N)
+ *
+ * Usage:
+ * $ gcc clocks_get_m_n.c
+ * $ ./a.out
+ */
+int get_m_n_optimized(u32 target_freq_khz, u32 ref_freq_khz, u32 *m, u32 *n,
+ u32 tolerance_khz)
+{
+ u32 min_freq = target_freq_khz - tolerance_khz;
+ u32 max_freq = target_freq_khz;
+ u32 freq, freq_old;
+ *n = 1;
+ while (1) {
+ *m = min_freq / ref_freq_khz / 2 * (*n) ;
+ freq_old = 0;
+ while (1) {
+ freq = ref_freq_khz * 2 * (*m) / (*n);
+ if (abs(target_freq_khz - freq_old) <=
+ abs(target_freq_khz - freq)) {
+ freq = freq_old;
+ (*m)--;
+ break;
+ }
+ (*m)++;
+ freq_old = freq;
+ }
+ if (freq >= min_freq && freq <= max_freq)
+ break;
+ (*n)++;
+ if ((*n) > MAX_N + 1) {
+ printf("ref %d m %d n %d target %d : ",
+ ref_freq_khz, *m, *n, target_freq_khz);
+ printf("can not find m & n - please consider"
+ " increasing tolerance\n");
+ return -1;
+ }
+ }
+ (*n)--;
+ printf("ref %d m %d n %d target %d locked %d\n",
+ ref_freq_khz, *m, *n, target_freq_khz, freq);
+ if ((ref_freq_khz / (*n + 1)) < 1000) {
+ printf("\tREFCLK - CLKINP/(N+1) is less than 1 MHz - less than"
+ " ideal, locking time will be high!\n");
+ }
+ return 0;
+}
+
+void main(void)
+{
+ u32 m, n;
+ printf("\nMPU - 2000000\n");
+ get_m_n_optimized(2000000, 12000, &m, &n, 0);
+ get_m_n_optimized(2000000, 13000, &m, &n, 0);
+ get_m_n_optimized(2000000, 16800, &m, &n, 800);
+ get_m_n_optimized(2000000, 19200, &m, &n, 0);
+ get_m_n_optimized(2000000, 26000, &m, &n, 0);
+ get_m_n_optimized(2000000, 27000, &m, &n, 0);
+ get_m_n_optimized(2000000, 38400, &m, &n, 0);
+
+ printf("\nMPU - 1200000\n");
+ get_m_n_optimized(1200000, 12000, &m, &n, 0);
+ get_m_n_optimized(1200000, 13000, &m, &n, 0);
+ get_m_n_optimized(1200000, 16800, &m, &n, 800);
+ get_m_n_optimized(1200000, 19200, &m, &n, 0);
+ get_m_n_optimized(1200000, 26000, &m, &n, 0);
+ get_m_n_optimized(1200000, 27000, &m, &n, 0);
+ get_m_n_optimized(1200000, 38400, &m, &n, 0);
+
+ printf("\nMPU - 1584000\n");
+ get_m_n_optimized(1584000, 12000, &m, &n, 0);
+ get_m_n_optimized(1584000, 13000, &m, &n, 0);
+ get_m_n_optimized(1584000, 16800, &m, &n, 400);
+ get_m_n_optimized(1584000, 19200, &m, &n, 0);
+ get_m_n_optimized(1584000, 26000, &m, &n, 0);
+ get_m_n_optimized(1584000, 27000, &m, &n, 0);
+ get_m_n_optimized(1584000, 38400, &m, &n, 0);
+
+ printf("\nCore 1600000\n");
+ get_m_n_optimized(1600000, 12000, &m, &n, 0);
+ get_m_n_optimized(1600000, 13000, &m, &n, 0);
+ get_m_n_optimized(1600000, 16800, &m, &n, 200);
+ get_m_n_optimized(1600000, 19200, &m, &n, 0);
+ get_m_n_optimized(1600000, 26000, &m, &n, 0);
+ get_m_n_optimized(1600000, 27000, &m, &n, 0);
+ get_m_n_optimized(1600000, 38400, &m, &n, 0);
+
+ printf("\nPER 1536000\n");
+ get_m_n_optimized(1536000, 12000, &m, &n, 0);
+ get_m_n_optimized(1536000, 13000, &m, &n, 0);
+ get_m_n_optimized(1536000, 16800, &m, &n, 0);
+ get_m_n_optimized(1536000, 19200, &m, &n, 0);
+ get_m_n_optimized(1536000, 26000, &m, &n, 0);
+ get_m_n_optimized(1536000, 27000, &m, &n, 0);
+ get_m_n_optimized(1536000, 38400, &m, &n, 0);
+
+ printf("\nIVA 1862000\n");
+ get_m_n_optimized(1862000, 12000, &m, &n, 0);
+ get_m_n_optimized(1862000, 13000, &m, &n, 0);
+ get_m_n_optimized(1862000, 16800, &m, &n, 0);
+ get_m_n_optimized(1862000, 19200, &m, &n, 900);
+ get_m_n_optimized(1862000, 26000, &m, &n, 0);
+ get_m_n_optimized(1862000, 27000, &m, &n, 0);
+ get_m_n_optimized(1862000, 38400, &m, &n, 800);
+
+ printf("\nABE 196608 sys clk\n");
+ get_m_n_optimized(196608, 12000, &m, &n, 700);
+ get_m_n_optimized(196608, 13000, &m, &n, 200);
+ get_m_n_optimized(196608, 16800, &m, &n, 700);
+ get_m_n_optimized(196608, 19200, &m, &n, 400);
+ get_m_n_optimized(196608, 26000, &m, &n, 200);
+ get_m_n_optimized(196608, 27000, &m, &n, 900);
+ get_m_n_optimized(196608, 38400, &m, &n, 0);
+
+ printf("\nABE 196608 32K\n");
+ get_m_n_optimized(196608000/4, 32768, &m, &n, 0);
+
+ printf("\nUSB 1920000\n");
+ get_m_n_optimized(1920000, 12000, &m, &n, 0);
+ get_m_n_optimized(1920000, 13000, &m, &n, 0);
+ get_m_n_optimized(1920000, 16800, &m, &n, 0);
+ get_m_n_optimized(1920000, 19200, &m, &n, 0);
+ get_m_n_optimized(1920000, 26000, &m, &n, 0);
+ get_m_n_optimized(1920000, 27000, &m, &n, 0);
+ get_m_n_optimized(1920000, 38400, &m, &n, 0);
+
+ printf("\nCore ES1 1523712\n");
+ get_m_n_optimized(1524000, 12000, &m, &n, 100);
+ get_m_n_optimized(1524000, 13000, &m, &n, 0);
+ get_m_n_optimized(1524000, 16800, &m, &n, 0);
+ get_m_n_optimized(1524000, 19200, &m, &n, 0);
+ get_m_n_optimized(1524000, 26000, &m, &n, 0);
+ get_m_n_optimized(1524000, 27000, &m, &n, 0);
+
+ /* exact recommendation for SDPs */
+ get_m_n_optimized(1523712, 38400, &m, &n, 0);
+
+}
--
1.7.0.4