mirror of
https://github.com/AsahiLinux/u-boot
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02c41535b6
The commit
f3f98bb0
: "ARM: OMAP4/5: Do not configure non essential pads, clocks, dplls"
removed the config option aimed towards moving that stuff into kernel, which
renders some code unreachable. Remove that code.
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
733 lines
19 KiB
C
733 lines
19 KiB
C
/*
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*
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* Clock initialization for OMAP4
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*
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* (C) Copyright 2010
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* Texas Instruments, <www.ti.com>
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*
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* Aneesh V <aneesh@ti.com>
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*
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* Based on previous work by:
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* Santosh Shilimkar <santosh.shilimkar@ti.com>
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* Rajendra Nayak <rnayak@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/omap_common.h>
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#include <asm/gpio.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/utils.h>
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#include <asm/omap_gpio.h>
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#include <asm/emif.h>
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#ifndef CONFIG_SPL_BUILD
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/*
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* printing to console doesn't work unless
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* this code is executed from SPL
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*/
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#define printf(fmt, args...)
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#define puts(s)
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#endif
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const u32 sys_clk_array[8] = {
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12000000, /* 12 MHz */
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20000000, /* 20 MHz */
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16800000, /* 16.8 MHz */
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19200000, /* 19.2 MHz */
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26000000, /* 26 MHz */
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27000000, /* 27 MHz */
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38400000, /* 38.4 MHz */
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};
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static inline u32 __get_sys_clk_index(void)
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{
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s8 ind;
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/*
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* For ES1 the ROM code calibration of sys clock is not reliable
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* due to hw issue. So, use hard-coded value. If this value is not
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* correct for any board over-ride this function in board file
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* From ES2.0 onwards you will get this information from
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* CM_SYS_CLKSEL
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*/
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if (omap_revision() == OMAP4430_ES1_0)
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ind = OMAP_SYS_CLK_IND_38_4_MHZ;
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else {
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/* SYS_CLKSEL - 1 to match the dpll param array indices */
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ind = (readl((*prcm)->cm_sys_clksel) &
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CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1;
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}
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return ind;
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}
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u32 get_sys_clk_index(void)
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__attribute__ ((weak, alias("__get_sys_clk_index")));
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u32 get_sys_clk_freq(void)
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{
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u8 index = get_sys_clk_index();
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return sys_clk_array[index];
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}
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void setup_post_dividers(u32 const base, const struct dpll_params *params)
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{
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struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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/* Setup post-dividers */
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if (params->m2 >= 0)
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writel(params->m2, &dpll_regs->cm_div_m2_dpll);
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if (params->m3 >= 0)
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writel(params->m3, &dpll_regs->cm_div_m3_dpll);
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if (params->m4_h11 >= 0)
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writel(params->m4_h11, &dpll_regs->cm_div_m4_h11_dpll);
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if (params->m5_h12 >= 0)
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writel(params->m5_h12, &dpll_regs->cm_div_m5_h12_dpll);
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if (params->m6_h13 >= 0)
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writel(params->m6_h13, &dpll_regs->cm_div_m6_h13_dpll);
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if (params->m7_h14 >= 0)
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writel(params->m7_h14, &dpll_regs->cm_div_m7_h14_dpll);
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if (params->h21 >= 0)
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writel(params->h21, &dpll_regs->cm_div_h21_dpll);
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if (params->h22 >= 0)
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writel(params->h22, &dpll_regs->cm_div_h22_dpll);
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if (params->h23 >= 0)
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writel(params->h23, &dpll_regs->cm_div_h23_dpll);
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if (params->h24 >= 0)
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writel(params->h24, &dpll_regs->cm_div_h24_dpll);
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}
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static inline void do_bypass_dpll(u32 const base)
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{
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struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
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clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
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CM_CLKMODE_DPLL_DPLL_EN_MASK,
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DPLL_EN_FAST_RELOCK_BYPASS <<
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CM_CLKMODE_DPLL_EN_SHIFT);
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}
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static inline void wait_for_bypass(u32 const base)
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{
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struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll,
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LDELAY)) {
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printf("Bypassing DPLL failed %x\n", base);
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}
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}
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static inline void do_lock_dpll(u32 const base)
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{
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struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
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CM_CLKMODE_DPLL_DPLL_EN_MASK,
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DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT);
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}
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static inline void wait_for_lock(u32 const base)
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{
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struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK,
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&dpll_regs->cm_idlest_dpll, LDELAY)) {
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printf("DPLL locking failed for %x\n", base);
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hang();
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}
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}
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inline u32 check_for_lock(u32 const base)
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{
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struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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u32 lock = readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK;
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return lock;
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}
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const struct dpll_params *get_mpu_dpll_params(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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return &dpll_data->mpu[sysclk_ind];
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}
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const struct dpll_params *get_core_dpll_params(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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return &dpll_data->core[sysclk_ind];
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}
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const struct dpll_params *get_per_dpll_params(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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return &dpll_data->per[sysclk_ind];
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}
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const struct dpll_params *get_iva_dpll_params(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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return &dpll_data->iva[sysclk_ind];
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}
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const struct dpll_params *get_usb_dpll_params(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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return &dpll_data->usb[sysclk_ind];
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}
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const struct dpll_params *get_abe_dpll_params(struct dplls const *dpll_data)
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{
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#ifdef CONFIG_SYS_OMAP_ABE_SYSCK
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u32 sysclk_ind = get_sys_clk_index();
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return &dpll_data->abe[sysclk_ind];
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#else
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return dpll_data->abe;
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#endif
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}
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static const struct dpll_params *get_ddr_dpll_params
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(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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if (!dpll_data->ddr)
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return NULL;
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return &dpll_data->ddr[sysclk_ind];
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}
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#ifdef CONFIG_DRIVER_TI_CPSW
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static const struct dpll_params *get_gmac_dpll_params
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(struct dplls const *dpll_data)
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{
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u32 sysclk_ind = get_sys_clk_index();
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if (!dpll_data->gmac)
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return NULL;
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return &dpll_data->gmac[sysclk_ind];
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}
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#endif
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static void do_setup_dpll(u32 const base, const struct dpll_params *params,
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u8 lock, char *dpll)
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{
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u32 temp, M, N;
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struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
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if (!params)
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return;
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temp = readl(&dpll_regs->cm_clksel_dpll);
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if (check_for_lock(base)) {
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/*
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* The Dpll has already been locked by rom code using CH.
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* Check if M,N are matching with Ideal nominal opp values.
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* If matches, skip the rest otherwise relock.
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*/
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M = (temp & CM_CLKSEL_DPLL_M_MASK) >> CM_CLKSEL_DPLL_M_SHIFT;
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N = (temp & CM_CLKSEL_DPLL_N_MASK) >> CM_CLKSEL_DPLL_N_SHIFT;
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if ((M != (params->m)) || (N != (params->n))) {
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debug("\n %s Dpll locked, but not for ideal M = %d,"
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"N = %d values, current values are M = %d,"
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"N= %d" , dpll, params->m, params->n,
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M, N);
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} else {
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/* Dpll locked with ideal values for nominal opps. */
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debug("\n %s Dpll already locked with ideal"
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"nominal opp values", dpll);
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goto setup_post_dividers;
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}
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}
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bypass_dpll(base);
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/* Set M & N */
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temp &= ~CM_CLKSEL_DPLL_M_MASK;
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temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK;
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temp &= ~CM_CLKSEL_DPLL_N_MASK;
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temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK;
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writel(temp, &dpll_regs->cm_clksel_dpll);
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/* Lock */
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if (lock)
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do_lock_dpll(base);
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setup_post_dividers:
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setup_post_dividers(base, params);
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/* Wait till the DPLL locks */
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if (lock)
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wait_for_lock(base);
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}
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u32 omap_ddr_clk(void)
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{
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u32 ddr_clk, sys_clk_khz, omap_rev, divider;
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const struct dpll_params *core_dpll_params;
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omap_rev = omap_revision();
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sys_clk_khz = get_sys_clk_freq() / 1000;
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core_dpll_params = get_core_dpll_params(*dplls_data);
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debug("sys_clk %d\n ", sys_clk_khz * 1000);
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/* Find Core DPLL locked frequency first */
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ddr_clk = sys_clk_khz * 2 * core_dpll_params->m /
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(core_dpll_params->n + 1);
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if (omap_rev < OMAP5430_ES1_0) {
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/*
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* DDR frequency is PHY_ROOT_CLK/2
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* PHY_ROOT_CLK = Fdpll/2/M2
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*/
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divider = 4;
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} else {
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/*
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* DDR frequency is PHY_ROOT_CLK
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* PHY_ROOT_CLK = Fdpll/2/M2
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*/
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divider = 2;
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}
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ddr_clk = ddr_clk / divider / core_dpll_params->m2;
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ddr_clk *= 1000; /* convert to Hz */
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debug("ddr_clk %d\n ", ddr_clk);
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return ddr_clk;
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}
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/*
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* Lock MPU dpll
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*
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* Resulting MPU frequencies:
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* 4430 ES1.0 : 600 MHz
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* 4430 ES2.x : 792 MHz (OPP Turbo)
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* 4460 : 920 MHz (OPP Turbo) - DCC disabled
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*/
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void configure_mpu_dpll(void)
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{
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const struct dpll_params *params;
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struct dpll_regs *mpu_dpll_regs;
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u32 omap_rev;
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omap_rev = omap_revision();
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/*
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* DCC and clock divider settings for 4460.
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* DCC is required, if more than a certain frequency is required.
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* For, 4460 > 1GHZ.
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* 5430 > 1.4GHZ.
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*/
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if ((omap_rev >= OMAP4460_ES1_0) && (omap_rev < OMAP5430_ES1_0)) {
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mpu_dpll_regs =
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(struct dpll_regs *)((*prcm)->cm_clkmode_dpll_mpu);
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bypass_dpll((*prcm)->cm_clkmode_dpll_mpu);
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clrbits_le32((*prcm)->cm_mpu_mpu_clkctrl,
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MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK);
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setbits_le32((*prcm)->cm_mpu_mpu_clkctrl,
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MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK);
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clrbits_le32(&mpu_dpll_regs->cm_clksel_dpll,
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CM_CLKSEL_DCC_EN_MASK);
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}
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params = get_mpu_dpll_params(*dplls_data);
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do_setup_dpll((*prcm)->cm_clkmode_dpll_mpu, params, DPLL_LOCK, "mpu");
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debug("MPU DPLL locked\n");
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}
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#if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP)
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static void setup_usb_dpll(void)
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{
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const struct dpll_params *params;
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u32 sys_clk_khz, sd_div, num, den;
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sys_clk_khz = get_sys_clk_freq() / 1000;
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/*
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* USB:
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* USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
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* DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
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* - where CLKINP is sys_clk in MHz
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* Use CLKINP in KHz and adjust the denominator accordingly so
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* that we have enough accuracy and at the same time no overflow
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*/
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params = get_usb_dpll_params(*dplls_data);
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num = params->m * sys_clk_khz;
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den = (params->n + 1) * 250 * 1000;
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num += den - 1;
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sd_div = num / den;
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clrsetbits_le32((*prcm)->cm_clksel_dpll_usb,
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CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
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sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
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/* Now setup the dpll with the regular function */
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do_setup_dpll((*prcm)->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb");
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}
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#endif
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static void setup_dplls(void)
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{
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u32 temp;
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const struct dpll_params *params;
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debug("setup_dplls\n");
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/* CORE dpll */
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params = get_core_dpll_params(*dplls_data); /* default - safest */
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/*
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* Do not lock the core DPLL now. Just set it up.
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* Core DPLL will be locked after setting up EMIF
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* using the FREQ_UPDATE method(freq_update_core())
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*/
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if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2)
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do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params,
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DPLL_NO_LOCK, "core");
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else
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do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params,
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DPLL_LOCK, "core");
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/* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */
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temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) |
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(CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) |
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(CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT);
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writel(temp, (*prcm)->cm_clksel_core);
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debug("Core DPLL configured\n");
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/* lock PER dpll */
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params = get_per_dpll_params(*dplls_data);
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do_setup_dpll((*prcm)->cm_clkmode_dpll_per,
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params, DPLL_LOCK, "per");
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debug("PER DPLL locked\n");
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/* MPU dpll */
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configure_mpu_dpll();
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#if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP)
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setup_usb_dpll();
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#endif
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params = get_ddr_dpll_params(*dplls_data);
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do_setup_dpll((*prcm)->cm_clkmode_dpll_ddrphy,
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params, DPLL_LOCK, "ddr");
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#ifdef CONFIG_DRIVER_TI_CPSW
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params = get_gmac_dpll_params(*dplls_data);
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do_setup_dpll((*prcm)->cm_clkmode_dpll_gmac, params,
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DPLL_LOCK, "gmac");
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#endif
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}
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u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic)
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{
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u32 offset_code;
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volt_offset -= pmic->base_offset;
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offset_code = (volt_offset + pmic->step - 1) / pmic->step;
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/*
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* Offset codes 1-6 all give the base voltage in Palmas
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* Offset code 0 switches OFF the SMPS
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*/
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return offset_code + pmic->start_code;
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}
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void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic)
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{
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u32 offset_code;
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u32 offset = volt_mv;
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int ret = 0;
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if (!volt_mv)
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return;
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pmic->pmic_bus_init();
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/* See if we can first get the GPIO if needed */
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if (pmic->gpio_en)
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ret = gpio_request(pmic->gpio, "PMIC_GPIO");
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if (ret < 0) {
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printf("%s: gpio %d request failed %d\n", __func__,
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pmic->gpio, ret);
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return;
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}
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/* Pull the GPIO low to select SET0 register, while we program SET1 */
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if (pmic->gpio_en)
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gpio_direction_output(pmic->gpio, 0);
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|
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/* convert to uV for better accuracy in the calculations */
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offset *= 1000;
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offset_code = get_offset_code(offset, pmic);
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debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
|
|
offset_code);
|
|
|
|
if (pmic->pmic_write(pmic->i2c_slave_addr, vcore_reg, offset_code))
|
|
printf("Scaling voltage failed for 0x%x\n", vcore_reg);
|
|
|
|
if (pmic->gpio_en)
|
|
gpio_direction_output(pmic->gpio, 1);
|
|
}
|
|
|
|
static u32 optimize_vcore_voltage(struct volts const *v)
|
|
{
|
|
u32 val;
|
|
if (!v->value)
|
|
return 0;
|
|
if (!v->efuse.reg)
|
|
return v->value;
|
|
|
|
switch (v->efuse.reg_bits) {
|
|
case 16:
|
|
val = readw(v->efuse.reg);
|
|
break;
|
|
case 32:
|
|
val = readl(v->efuse.reg);
|
|
break;
|
|
default:
|
|
printf("Error: efuse 0x%08x bits=%d unknown\n",
|
|
v->efuse.reg, v->efuse.reg_bits);
|
|
return v->value;
|
|
}
|
|
|
|
if (!val) {
|
|
printf("Error: efuse 0x%08x bits=%d val=0, using %d\n",
|
|
v->efuse.reg, v->efuse.reg_bits, v->value);
|
|
return v->value;
|
|
}
|
|
|
|
debug("%s:efuse 0x%08x bits=%d Vnom=%d, using efuse value %d\n",
|
|
__func__, v->efuse.reg, v->efuse.reg_bits, v->value, val);
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* 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(struct vcores_data const *vcores)
|
|
{
|
|
u32 val;
|
|
|
|
val = optimize_vcore_voltage(&vcores->core);
|
|
do_scale_vcore(vcores->core.addr, val, vcores->core.pmic);
|
|
|
|
val = optimize_vcore_voltage(&vcores->mpu);
|
|
do_scale_vcore(vcores->mpu.addr, val, vcores->mpu.pmic);
|
|
|
|
/* Configure MPU ABB LDO after scale */
|
|
abb_setup((*ctrl)->control_std_fuse_opp_vdd_mpu_2,
|
|
(*ctrl)->control_wkup_ldovbb_mpu_voltage_ctrl,
|
|
(*prcm)->prm_abbldo_mpu_setup,
|
|
(*prcm)->prm_abbldo_mpu_ctrl,
|
|
(*prcm)->prm_irqstatus_mpu_2,
|
|
OMAP_ABB_MPU_TXDONE_MASK,
|
|
OMAP_ABB_FAST_OPP);
|
|
|
|
val = optimize_vcore_voltage(&vcores->mm);
|
|
do_scale_vcore(vcores->mm.addr, val, vcores->mm.pmic);
|
|
|
|
val = optimize_vcore_voltage(&vcores->gpu);
|
|
do_scale_vcore(vcores->gpu.addr, val, vcores->gpu.pmic);
|
|
|
|
val = optimize_vcore_voltage(&vcores->eve);
|
|
do_scale_vcore(vcores->eve.addr, val, vcores->eve.pmic);
|
|
|
|
val = optimize_vcore_voltage(&vcores->iva);
|
|
do_scale_vcore(vcores->iva.addr, val, vcores->iva.pmic);
|
|
}
|
|
|
|
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 - %x\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%x 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 - %x\n", clkctrl_addr);
|
|
if (wait_for_enable)
|
|
wait_for_clk_enable(clkctrl_addr);
|
|
}
|
|
|
|
void freq_update_core(void)
|
|
{
|
|
u32 freq_config1 = 0;
|
|
const struct dpll_params *core_dpll_params;
|
|
u32 omap_rev = omap_revision();
|
|
|
|
core_dpll_params = get_core_dpll_params(*dplls_data);
|
|
/* 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,
|
|
(u32 *) (*prcm)->cm_shadow_freq_config1, LDELAY)) {
|
|
puts("FREQ UPDATE procedure failed!!");
|
|
hang();
|
|
}
|
|
|
|
/*
|
|
* Putting EMIF in HW_AUTO is seen to be causing issues with
|
|
* EMIF clocks and the master DLL. Keep EMIF in SW_WKUP
|
|
* in OMAP5430 ES1.0 silicon
|
|
*/
|
|
if (omap_rev != OMAP5430_ES1_0) {
|
|
/* 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 setup_clocks_for_console(void)
|
|
{
|
|
/* Do not add any spl_debug prints in this function */
|
|
clrsetbits_le32((*prcm)->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
|
|
CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
|
|
CD_CLKCTRL_CLKTRCTRL_SHIFT);
|
|
|
|
/* Enable all UARTs - console will be on one of them */
|
|
clrsetbits_le32((*prcm)->cm_l4per_uart1_clkctrl,
|
|
MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
|
clrsetbits_le32((*prcm)->cm_l4per_uart2_clkctrl,
|
|
MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
|
clrsetbits_le32((*prcm)->cm_l4per_uart3_clkctrl,
|
|
MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
|
clrsetbits_le32((*prcm)->cm_l4per_uart4_clkctrl,
|
|
MODULE_CLKCTRL_MODULEMODE_MASK,
|
|
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
|
|
MODULE_CLKCTRL_MODULEMODE_SHIFT);
|
|
|
|
clrsetbits_le32((*prcm)->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
|
|
CD_CLKCTRL_CLKTRCTRL_HW_AUTO <<
|
|
CD_CLKCTRL_CLKTRCTRL_SHIFT);
|
|
}
|
|
|
|
void do_enable_clocks(u32 const *clk_domains,
|
|
u32 const *clk_modules_hw_auto,
|
|
u32 const *clk_modules_explicit_en,
|
|
u8 wait_for_enable)
|
|
{
|
|
u32 i, max = 100;
|
|
|
|
/* Put the clock domains in SW_WKUP mode */
|
|
for (i = 0; (i < max) && clk_domains[i]; i++) {
|
|
enable_clock_domain(clk_domains[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[i]; i++) {
|
|
enable_clock_module(clk_modules_hw_auto[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[i]; i++) {
|
|
enable_clock_module(clk_modules_explicit_en[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[i]; i++) {
|
|
enable_clock_domain(clk_domains[i],
|
|
CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
|
|
}
|
|
}
|
|
|
|
void prcm_init(void)
|
|
{
|
|
switch (omap_hw_init_context()) {
|
|
case OMAP_INIT_CONTEXT_SPL:
|
|
case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
|
|
case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
|
|
enable_basic_clocks();
|
|
timer_init();
|
|
scale_vcores(*omap_vcores);
|
|
setup_dplls();
|
|
setup_warmreset_time();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context())
|
|
enable_basic_uboot_clocks();
|
|
}
|
|
|
|
void gpi2c_init(void)
|
|
{
|
|
static int gpi2c = 1;
|
|
|
|
if (gpi2c) {
|
|
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
|
|
CONFIG_SYS_OMAP24_I2C_SLAVE);
|
|
gpi2c = 0;
|
|
}
|
|
}
|