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linux/arch/arm/mach-omap2/clock33xx_data.c
Vaibhav Hiremath 12ac7f9e11 ARM: AM33XX: Fix configuration of dmtimer parent clock by dmtimer driverDate:Wed, 17 Oct 2012 13:55:55 -0500 
Add dmtimer clock aliases for AM33XX devices so that the parent clock for
the dmtimer can be set correctly by the dmtimer driver. Without these clock
aliases the dmtimer driver will fail to find the parent clocks for the dmtimer.

Verified that DMTIMERs can be successfully requested on AM335x beagle bone.

Original patch was provided by Vaibhav Hiremath [1]. Changelog and
additional verification performed by Jon Hunter.

[1] http://marc.info/?l=linux-omap&m=134693631608018&w=2

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-23 18:58:21 -07:00

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/*
* AM33XX Clock data
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
* Vaibhav Hiremath <hvaibhav@ti.com>
*
* 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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/clk.h>
#include <plat/clkdev_omap.h>
#include "am33xx.h"
#include "iomap.h"
#include "control.h"
#include "clock.h"
#include "cm.h"
#include "cm33xx.h"
#include "cm-regbits-33xx.h"
#include "prm.h"
/* Maximum DPLL multiplier, divider values for AM33XX */
#define AM33XX_MAX_DPLL_MULT 2047
#define AM33XX_MAX_DPLL_DIV 128
/* Modulemode control */
#define AM33XX_MODULEMODE_HWCTRL 0
#define AM33XX_MODULEMODE_SWCTRL 1
/* TRM ERRATA: Timer 3 & 6 default parent (TCLKIN) may not be always
* physically present, in such a case HWMOD enabling of
* clock would be failure with default parent. And timer
* probe thinks clock is already enabled, this leads to
* crash upon accessing timer 3 & 6 registers in probe.
* Fix by setting parent of both these timers to master
* oscillator clock.
*/
static inline void am33xx_init_timer_parent(struct clk *clk)
{
omap2_clksel_set_parent(clk, clk->parent);
}
/* Root clocks */
/* RTC 32k */
static struct clk clk_32768_ck = {
.name = "clk_32768_ck",
.clkdm_name = "l4_rtc_clkdm",
.rate = 32768,
.ops = &clkops_null,
};
/* On-Chip 32KHz RC OSC */
static struct clk clk_rc32k_ck = {
.name = "clk_rc32k_ck",
.rate = 32000,
.ops = &clkops_null,
};
/* Crystal input clks */
static struct clk virt_24000000_ck = {
.name = "virt_24000000_ck",
.rate = 24000000,
.ops = &clkops_null,
};
static struct clk virt_25000000_ck = {
.name = "virt_25000000_ck",
.rate = 25000000,
.ops = &clkops_null,
};
/* Oscillator clock */
/* 19.2, 24, 25 or 26 MHz */
static const struct clksel sys_clkin_sel[] = {
{ .parent = &virt_19200000_ck, .rates = div_1_0_rates },
{ .parent = &virt_24000000_ck, .rates = div_1_1_rates },
{ .parent = &virt_25000000_ck, .rates = div_1_2_rates },
{ .parent = &virt_26000000_ck, .rates = div_1_3_rates },
{ .parent = NULL },
};
/* External clock - 12 MHz */
static struct clk tclkin_ck = {
.name = "tclkin_ck",
.rate = 12000000,
.ops = &clkops_null,
};
/*
* sys_clk in: input to the dpll and also used as funtional clock for,
* adc_tsc, smartreflex0-1, timer1-7, mcasp0-1, dcan0-1, cefuse
*
*/
static struct clk sys_clkin_ck = {
.name = "sys_clkin_ck",
.parent = &virt_24000000_ck,
.init = &omap2_init_clksel_parent,
.clksel_reg = AM33XX_CTRL_REGADDR(AM33XX_CONTROL_STATUS),
.clksel_mask = AM33XX_CONTROL_STATUS_SYSBOOT1_MASK,
.clksel = sys_clkin_sel,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
/* DPLL_CORE */
static struct dpll_data dpll_core_dd = {
.mult_div1_reg = AM33XX_CM_CLKSEL_DPLL_CORE,
.clk_bypass = &sys_clkin_ck,
.clk_ref = &sys_clkin_ck,
.control_reg = AM33XX_CM_CLKMODE_DPLL_CORE,
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
.idlest_reg = AM33XX_CM_IDLEST_DPLL_CORE,
.mult_mask = AM33XX_DPLL_MULT_MASK,
.div1_mask = AM33XX_DPLL_DIV_MASK,
.enable_mask = AM33XX_DPLL_EN_MASK,
.idlest_mask = AM33XX_ST_DPLL_CLK_MASK,
.max_multiplier = AM33XX_MAX_DPLL_MULT,
.max_divider = AM33XX_MAX_DPLL_DIV,
.min_divider = 1,
};
/* CLKDCOLDO output */
static struct clk dpll_core_ck = {
.name = "dpll_core_ck",
.parent = &sys_clkin_ck,
.dpll_data = &dpll_core_dd,
.init = &omap2_init_dpll_parent,
.ops = &clkops_omap3_core_dpll_ops,
.recalc = &omap3_dpll_recalc,
};
static struct clk dpll_core_x2_ck = {
.name = "dpll_core_x2_ck",
.parent = &dpll_core_ck,
.flags = CLOCK_CLKOUTX2,
.ops = &clkops_null,
.recalc = &omap3_clkoutx2_recalc,
};
static const struct clksel dpll_core_m4_div[] = {
{ .parent = &dpll_core_x2_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_core_m4_ck = {
.name = "dpll_core_m4_ck",
.parent = &dpll_core_x2_ck,
.init = &omap2_init_clksel_parent,
.clksel = dpll_core_m4_div,
.clksel_reg = AM33XX_CM_DIV_M4_DPLL_CORE,
.clksel_mask = AM33XX_HSDIVIDER_CLKOUT1_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
static const struct clksel dpll_core_m5_div[] = {
{ .parent = &dpll_core_x2_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_core_m5_ck = {
.name = "dpll_core_m5_ck",
.parent = &dpll_core_x2_ck,
.init = &omap2_init_clksel_parent,
.clksel = dpll_core_m5_div,
.clksel_reg = AM33XX_CM_DIV_M5_DPLL_CORE,
.clksel_mask = AM33XX_HSDIVIDER_CLKOUT2_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
static const struct clksel dpll_core_m6_div[] = {
{ .parent = &dpll_core_x2_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_core_m6_ck = {
.name = "dpll_core_m6_ck",
.parent = &dpll_core_x2_ck,
.init = &omap2_init_clksel_parent,
.clksel = dpll_core_m6_div,
.clksel_reg = AM33XX_CM_DIV_M6_DPLL_CORE,
.clksel_mask = AM33XX_HSDIVIDER_CLKOUT3_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
/* DPLL_MPU */
static struct dpll_data dpll_mpu_dd = {
.mult_div1_reg = AM33XX_CM_CLKSEL_DPLL_MPU,
.clk_bypass = &sys_clkin_ck,
.clk_ref = &sys_clkin_ck,
.control_reg = AM33XX_CM_CLKMODE_DPLL_MPU,
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
.idlest_reg = AM33XX_CM_IDLEST_DPLL_MPU,
.mult_mask = AM33XX_DPLL_MULT_MASK,
.div1_mask = AM33XX_DPLL_DIV_MASK,
.enable_mask = AM33XX_DPLL_EN_MASK,
.idlest_mask = AM33XX_ST_DPLL_CLK_MASK,
.max_multiplier = AM33XX_MAX_DPLL_MULT,
.max_divider = AM33XX_MAX_DPLL_DIV,
.min_divider = 1,
};
/* CLKOUT: fdpll/M2 */
static struct clk dpll_mpu_ck = {
.name = "dpll_mpu_ck",
.parent = &sys_clkin_ck,
.dpll_data = &dpll_mpu_dd,
.init = &omap2_init_dpll_parent,
.ops = &clkops_omap3_noncore_dpll_ops,
.recalc = &omap3_dpll_recalc,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_noncore_dpll_set_rate,
};
/*
* TODO: Add clksel here (sys_clkin, CORE_CLKOUTM6, PER_CLKOUTM2
* and ALT_CLK1/2)
*/
static const struct clksel dpll_mpu_m2_div[] = {
{ .parent = &dpll_mpu_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_mpu_m2_ck = {
.name = "dpll_mpu_m2_ck",
.clkdm_name = "mpu_clkdm",
.parent = &dpll_mpu_ck,
.clksel = dpll_mpu_m2_div,
.clksel_reg = AM33XX_CM_DIV_M2_DPLL_MPU,
.clksel_mask = AM33XX_DPLL_CLKOUT_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
/* DPLL_DDR */
static struct dpll_data dpll_ddr_dd = {
.mult_div1_reg = AM33XX_CM_CLKSEL_DPLL_DDR,
.clk_bypass = &sys_clkin_ck,
.clk_ref = &sys_clkin_ck,
.control_reg = AM33XX_CM_CLKMODE_DPLL_DDR,
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
.idlest_reg = AM33XX_CM_IDLEST_DPLL_DDR,
.mult_mask = AM33XX_DPLL_MULT_MASK,
.div1_mask = AM33XX_DPLL_DIV_MASK,
.enable_mask = AM33XX_DPLL_EN_MASK,
.idlest_mask = AM33XX_ST_DPLL_CLK_MASK,
.max_multiplier = AM33XX_MAX_DPLL_MULT,
.max_divider = AM33XX_MAX_DPLL_DIV,
.min_divider = 1,
};
/* CLKOUT: fdpll/M2 */
static struct clk dpll_ddr_ck = {
.name = "dpll_ddr_ck",
.parent = &sys_clkin_ck,
.dpll_data = &dpll_ddr_dd,
.init = &omap2_init_dpll_parent,
.ops = &clkops_null,
.recalc = &omap3_dpll_recalc,
};
/*
* TODO: Add clksel here (sys_clkin, CORE_CLKOUTM6, PER_CLKOUTM2
* and ALT_CLK1/2)
*/
static const struct clksel dpll_ddr_m2_div[] = {
{ .parent = &dpll_ddr_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_ddr_m2_ck = {
.name = "dpll_ddr_m2_ck",
.parent = &dpll_ddr_ck,
.clksel = dpll_ddr_m2_div,
.clksel_reg = AM33XX_CM_DIV_M2_DPLL_DDR,
.clksel_mask = AM33XX_DPLL_CLKOUT_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
/* emif_fck functional clock */
static struct clk dpll_ddr_m2_div2_ck = {
.name = "dpll_ddr_m2_div2_ck",
.clkdm_name = "l3_clkdm",
.parent = &dpll_ddr_m2_ck,
.ops = &clkops_null,
.fixed_div = 2,
.recalc = &omap_fixed_divisor_recalc,
};
/* DPLL_DISP */
static struct dpll_data dpll_disp_dd = {
.mult_div1_reg = AM33XX_CM_CLKSEL_DPLL_DISP,
.clk_bypass = &sys_clkin_ck,
.clk_ref = &sys_clkin_ck,
.control_reg = AM33XX_CM_CLKMODE_DPLL_DISP,
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
.idlest_reg = AM33XX_CM_IDLEST_DPLL_DISP,
.mult_mask = AM33XX_DPLL_MULT_MASK,
.div1_mask = AM33XX_DPLL_DIV_MASK,
.enable_mask = AM33XX_DPLL_EN_MASK,
.idlest_mask = AM33XX_ST_DPLL_CLK_MASK,
.max_multiplier = AM33XX_MAX_DPLL_MULT,
.max_divider = AM33XX_MAX_DPLL_DIV,
.min_divider = 1,
};
/* CLKOUT: fdpll/M2 */
static struct clk dpll_disp_ck = {
.name = "dpll_disp_ck",
.parent = &sys_clkin_ck,
.dpll_data = &dpll_disp_dd,
.init = &omap2_init_dpll_parent,
.ops = &clkops_null,
.recalc = &omap3_dpll_recalc,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_noncore_dpll_set_rate,
};
/*
* TODO: Add clksel here (sys_clkin, CORE_CLKOUTM6, PER_CLKOUTM2
* and ALT_CLK1/2)
*/
static const struct clksel dpll_disp_m2_div[] = {
{ .parent = &dpll_disp_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_disp_m2_ck = {
.name = "dpll_disp_m2_ck",
.parent = &dpll_disp_ck,
.clksel = dpll_disp_m2_div,
.clksel_reg = AM33XX_CM_DIV_M2_DPLL_DISP,
.clksel_mask = AM33XX_DPLL_CLKOUT_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
/* DPLL_PER */
static struct dpll_data dpll_per_dd = {
.mult_div1_reg = AM33XX_CM_CLKSEL_DPLL_PERIPH,
.clk_bypass = &sys_clkin_ck,
.clk_ref = &sys_clkin_ck,
.control_reg = AM33XX_CM_CLKMODE_DPLL_PER,
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
.idlest_reg = AM33XX_CM_IDLEST_DPLL_PER,
.mult_mask = AM33XX_DPLL_MULT_PERIPH_MASK,
.div1_mask = AM33XX_DPLL_PER_DIV_MASK,
.enable_mask = AM33XX_DPLL_EN_MASK,
.idlest_mask = AM33XX_ST_DPLL_CLK_MASK,
.max_multiplier = AM33XX_MAX_DPLL_MULT,
.max_divider = AM33XX_MAX_DPLL_DIV,
.min_divider = 1,
.flags = DPLL_J_TYPE,
};
/* CLKDCOLDO */
static struct clk dpll_per_ck = {
.name = "dpll_per_ck",
.parent = &sys_clkin_ck,
.dpll_data = &dpll_per_dd,
.init = &omap2_init_dpll_parent,
.ops = &clkops_null,
.recalc = &omap3_dpll_recalc,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_noncore_dpll_set_rate,
};
/* CLKOUT: fdpll/M2 */
static const struct clksel dpll_per_m2_div[] = {
{ .parent = &dpll_per_ck, .rates = div31_1to31_rates },
{ .parent = NULL },
};
static struct clk dpll_per_m2_ck = {
.name = "dpll_per_m2_ck",
.parent = &dpll_per_ck,
.clksel = dpll_per_m2_div,
.clksel_reg = AM33XX_CM_DIV_M2_DPLL_PER,
.clksel_mask = AM33XX_DPLL_CLKOUT_DIV_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
static struct clk dpll_per_m2_div4_wkupdm_ck = {
.name = "dpll_per_m2_div4_wkupdm_ck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &dpll_per_m2_ck,
.fixed_div = 4,
.ops = &clkops_null,
.recalc = &omap_fixed_divisor_recalc,
};
static struct clk dpll_per_m2_div4_ck = {
.name = "dpll_per_m2_div4_ck",
.clkdm_name = "l4ls_clkdm",
.parent = &dpll_per_m2_ck,
.fixed_div = 4,
.ops = &clkops_null,
.recalc = &omap_fixed_divisor_recalc,
};
static struct clk l3_gclk = {
.name = "l3_gclk",
.clkdm_name = "l3_clkdm",
.parent = &dpll_core_m4_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk dpll_core_m4_div2_ck = {
.name = "dpll_core_m4_div2_ck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &dpll_core_m4_ck,
.ops = &clkops_null,
.fixed_div = 2,
.recalc = &omap_fixed_divisor_recalc,
};
static struct clk l4_rtc_gclk = {
.name = "l4_rtc_gclk",
.parent = &dpll_core_m4_ck,
.ops = &clkops_null,
.fixed_div = 2,
.recalc = &omap_fixed_divisor_recalc,
};
static struct clk clk_24mhz = {
.name = "clk_24mhz",
.parent = &dpll_per_m2_ck,
.fixed_div = 8,
.ops = &clkops_null,
.recalc = &omap_fixed_divisor_recalc,
};
/*
* Below clock nodes describes clockdomains derived out
* of core clock.
*/
static struct clk l4hs_gclk = {
.name = "l4hs_gclk",
.clkdm_name = "l4hs_clkdm",
.parent = &dpll_core_m4_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk l3s_gclk = {
.name = "l3s_gclk",
.clkdm_name = "l3s_clkdm",
.parent = &dpll_core_m4_div2_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk l4fw_gclk = {
.name = "l4fw_gclk",
.clkdm_name = "l4fw_clkdm",
.parent = &dpll_core_m4_div2_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk l4ls_gclk = {
.name = "l4ls_gclk",
.clkdm_name = "l4ls_clkdm",
.parent = &dpll_core_m4_div2_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk sysclk_div_ck = {
.name = "sysclk_div_ck",
.parent = &dpll_core_m4_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
/*
* In order to match the clock domain with hwmod clockdomain entry,
* separate clock nodes is required for the modules which are
* directly getting their funtioncal clock from sys_clkin.
*/
static struct clk adc_tsc_fck = {
.name = "adc_tsc_fck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk dcan0_fck = {
.name = "dcan0_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk dcan1_fck = {
.name = "dcan1_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk mcasp0_fck = {
.name = "mcasp0_fck",
.clkdm_name = "l3s_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk mcasp1_fck = {
.name = "mcasp1_fck",
.clkdm_name = "l3s_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk smartreflex0_fck = {
.name = "smartreflex0_fck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk smartreflex1_fck = {
.name = "smartreflex1_fck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &sys_clkin_ck,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
/*
* Modules clock nodes
*
* The following clock leaf nodes are added for the moment because:
*
* - hwmod data is not present for these modules, either hwmod
* control is not required or its not populated.
* - Driver code is not yet migrated to use hwmod/runtime pm
* - Modules outside kernel access (to disable them by default)
*
* - debugss
* - mmu (gfx domain)
* - cefuse
* - usbotg_fck (its additional clock and not really a modulemode)
* - ieee5000
*/
static struct clk debugss_ick = {
.name = "debugss_ick",
.clkdm_name = "l3_aon_clkdm",
.parent = &dpll_core_m4_ck,
.ops = &clkops_omap2_dflt,
.enable_reg = AM33XX_CM_WKUP_DEBUGSS_CLKCTRL,
.enable_bit = AM33XX_MODULEMODE_SWCTRL,
.recalc = &followparent_recalc,
};
static struct clk mmu_fck = {
.name = "mmu_fck",
.clkdm_name = "gfx_l3_clkdm",
.parent = &dpll_core_m4_ck,
.ops = &clkops_omap2_dflt,
.enable_reg = AM33XX_CM_GFX_MMUDATA_CLKCTRL,
.enable_bit = AM33XX_MODULEMODE_SWCTRL,
.recalc = &followparent_recalc,
};
static struct clk cefuse_fck = {
.name = "cefuse_fck",
.clkdm_name = "l4_cefuse_clkdm",
.parent = &sys_clkin_ck,
.enable_reg = AM33XX_CM_CEFUSE_CEFUSE_CLKCTRL,
.enable_bit = AM33XX_MODULEMODE_SWCTRL,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
/*
* clkdiv32 is generated from fixed division of 732.4219
*/
static struct clk clkdiv32k_ick = {
.name = "clkdiv32k_ick",
.clkdm_name = "clk_24mhz_clkdm",
.rate = 32768,
.parent = &clk_24mhz,
.enable_reg = AM33XX_CM_PER_CLKDIV32K_CLKCTRL,
.enable_bit = AM33XX_MODULEMODE_SWCTRL,
.ops = &clkops_omap2_dflt,
};
static struct clk usbotg_fck = {
.name = "usbotg_fck",
.clkdm_name = "l3s_clkdm",
.parent = &dpll_per_ck,
.enable_reg = AM33XX_CM_CLKDCOLDO_DPLL_PER,
.enable_bit = AM33XX_ST_DPLL_CLKDCOLDO_SHIFT,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
static struct clk ieee5000_fck = {
.name = "ieee5000_fck",
.clkdm_name = "l3s_clkdm",
.parent = &dpll_core_m4_div2_ck,
.enable_reg = AM33XX_CM_PER_IEEE5000_CLKCTRL,
.enable_bit = AM33XX_MODULEMODE_SWCTRL,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
/* Timers */
static const struct clksel timer1_clkmux_sel[] = {
{ .parent = &sys_clkin_ck, .rates = div_1_0_rates },
{ .parent = &clkdiv32k_ick, .rates = div_1_1_rates },
{ .parent = &tclkin_ck, .rates = div_1_2_rates },
{ .parent = &clk_rc32k_ck, .rates = div_1_3_rates },
{ .parent = &clk_32768_ck, .rates = div_1_4_rates },
{ .parent = NULL },
};
static struct clk timer1_fck = {
.name = "timer1_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &omap2_init_clksel_parent,
.clksel = timer1_clkmux_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER1MS_CLK,
.clksel_mask = AM33XX_CLKSEL_0_2_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static const struct clksel timer2_to_7_clk_sel[] = {
{ .parent = &tclkin_ck, .rates = div_1_0_rates },
{ .parent = &sys_clkin_ck, .rates = div_1_1_rates },
{ .parent = &clkdiv32k_ick, .rates = div_1_2_rates },
{ .parent = NULL },
};
static struct clk timer2_fck = {
.name = "timer2_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &omap2_init_clksel_parent,
.clksel = timer2_to_7_clk_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER2_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk timer3_fck = {
.name = "timer3_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &am33xx_init_timer_parent,
.clksel = timer2_to_7_clk_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER3_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk timer4_fck = {
.name = "timer4_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &omap2_init_clksel_parent,
.clksel = timer2_to_7_clk_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER4_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk timer5_fck = {
.name = "timer5_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &omap2_init_clksel_parent,
.clksel = timer2_to_7_clk_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER5_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk timer6_fck = {
.name = "timer6_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &am33xx_init_timer_parent,
.clksel = timer2_to_7_clk_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER6_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk timer7_fck = {
.name = "timer7_fck",
.clkdm_name = "l4ls_clkdm",
.parent = &sys_clkin_ck,
.init = &omap2_init_clksel_parent,
.clksel = timer2_to_7_clk_sel,
.clksel_reg = AM33XX_CLKSEL_TIMER7_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk cpsw_125mhz_gclk = {
.name = "cpsw_125mhz_gclk",
.clkdm_name = "cpsw_125mhz_clkdm",
.parent = &dpll_core_m5_ck,
.ops = &clkops_null,
.fixed_div = 2,
.recalc = &omap_fixed_divisor_recalc,
};
static const struct clksel cpsw_cpts_rft_clkmux_sel[] = {
{ .parent = &dpll_core_m5_ck, .rates = div_1_0_rates },
{ .parent = &dpll_core_m4_ck, .rates = div_1_1_rates },
{ .parent = NULL },
};
static struct clk cpsw_cpts_rft_clk = {
.name = "cpsw_cpts_rft_clk",
.clkdm_name = "cpsw_125mhz_clkdm",
.parent = &dpll_core_m5_ck,
.clksel = cpsw_cpts_rft_clkmux_sel,
.clksel_reg = AM33XX_CM_CPTS_RFT_CLKSEL,
.clksel_mask = AM33XX_CLKSEL_0_0_MASK,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
/* gpio */
static const struct clksel gpio0_dbclk_mux_sel[] = {
{ .parent = &clk_rc32k_ck, .rates = div_1_0_rates },
{ .parent = &clk_32768_ck, .rates = div_1_1_rates },
{ .parent = &clkdiv32k_ick, .rates = div_1_2_rates },
{ .parent = NULL },
};
static struct clk gpio0_dbclk_mux_ck = {
.name = "gpio0_dbclk_mux_ck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &clk_rc32k_ck,
.init = &omap2_init_clksel_parent,
.clksel = gpio0_dbclk_mux_sel,
.clksel_reg = AM33XX_CLKSEL_GPIO0_DBCLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
static struct clk gpio0_dbclk = {
.name = "gpio0_dbclk",
.clkdm_name = "l4_wkup_clkdm",
.parent = &gpio0_dbclk_mux_ck,
.enable_reg = AM33XX_CM_WKUP_GPIO0_CLKCTRL,
.enable_bit = AM33XX_OPTFCLKEN_GPIO0_GDBCLK_SHIFT,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
static struct clk gpio1_dbclk = {
.name = "gpio1_dbclk",
.clkdm_name = "l4ls_clkdm",
.parent = &clkdiv32k_ick,
.enable_reg = AM33XX_CM_PER_GPIO1_CLKCTRL,
.enable_bit = AM33XX_OPTFCLKEN_GPIO_1_GDBCLK_SHIFT,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
static struct clk gpio2_dbclk = {
.name = "gpio2_dbclk",
.clkdm_name = "l4ls_clkdm",
.parent = &clkdiv32k_ick,
.enable_reg = AM33XX_CM_PER_GPIO2_CLKCTRL,
.enable_bit = AM33XX_OPTFCLKEN_GPIO_2_GDBCLK_SHIFT,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
static struct clk gpio3_dbclk = {
.name = "gpio3_dbclk",
.clkdm_name = "l4ls_clkdm",
.parent = &clkdiv32k_ick,
.enable_reg = AM33XX_CM_PER_GPIO3_CLKCTRL,
.enable_bit = AM33XX_OPTFCLKEN_GPIO_3_GDBCLK_SHIFT,
.ops = &clkops_omap2_dflt,
.recalc = &followparent_recalc,
};
static const struct clksel pruss_ocp_clk_mux_sel[] = {
{ .parent = &l3_gclk, .rates = div_1_0_rates },
{ .parent = &dpll_disp_m2_ck, .rates = div_1_1_rates },
{ .parent = NULL },
};
static struct clk pruss_ocp_gclk = {
.name = "pruss_ocp_gclk",
.clkdm_name = "pruss_ocp_clkdm",
.parent = &l3_gclk,
.init = &omap2_init_clksel_parent,
.clksel = pruss_ocp_clk_mux_sel,
.clksel_reg = AM33XX_CLKSEL_PRUSS_OCP_CLK,
.clksel_mask = AM33XX_CLKSEL_0_0_MASK,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static const struct clksel lcd_clk_mux_sel[] = {
{ .parent = &dpll_disp_m2_ck, .rates = div_1_0_rates },
{ .parent = &dpll_core_m5_ck, .rates = div_1_1_rates },
{ .parent = &dpll_per_m2_ck, .rates = div_1_2_rates },
{ .parent = NULL },
};
static struct clk lcd_gclk = {
.name = "lcd_gclk",
.clkdm_name = "lcdc_clkdm",
.parent = &dpll_disp_m2_ck,
.init = &omap2_init_clksel_parent,
.clksel = lcd_clk_mux_sel,
.clksel_reg = AM33XX_CLKSEL_LCDC_PIXEL_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static struct clk mmc_clk = {
.name = "mmc_clk",
.clkdm_name = "l4ls_clkdm",
.parent = &dpll_per_m2_ck,
.ops = &clkops_null,
.fixed_div = 2,
.recalc = &omap_fixed_divisor_recalc,
};
static struct clk mmc2_fck = {
.name = "mmc2_fck",
.clkdm_name = "l3s_clkdm",
.parent = &mmc_clk,
.ops = &clkops_null,
.recalc = &followparent_recalc,
};
static const struct clksel gfx_clksel_sel[] = {
{ .parent = &dpll_core_m4_ck, .rates = div_1_0_rates },
{ .parent = &dpll_per_m2_ck, .rates = div_1_1_rates },
{ .parent = NULL },
};
static struct clk gfx_fclk_clksel_ck = {
.name = "gfx_fclk_clksel_ck",
.parent = &dpll_core_m4_ck,
.clksel = gfx_clksel_sel,
.ops = &clkops_null,
.clksel_reg = AM33XX_CLKSEL_GFX_FCLK,
.clksel_mask = AM33XX_CLKSEL_GFX_FCLK_MASK,
.recalc = &omap2_clksel_recalc,
};
static const struct clksel_rate div_1_0_2_1_rates[] = {
{ .div = 1, .val = 0, .flags = RATE_IN_AM33XX },
{ .div = 2, .val = 1, .flags = RATE_IN_AM33XX },
{ .div = 0 },
};
static const struct clksel gfx_div_sel[] = {
{ .parent = &gfx_fclk_clksel_ck, .rates = div_1_0_2_1_rates },
{ .parent = NULL },
};
static struct clk gfx_fck_div_ck = {
.name = "gfx_fck_div_ck",
.clkdm_name = "gfx_l3_clkdm",
.parent = &gfx_fclk_clksel_ck,
.init = &omap2_init_clksel_parent,
.clksel = gfx_div_sel,
.clksel_reg = AM33XX_CLKSEL_GFX_FCLK,
.clksel_mask = AM33XX_CLKSEL_0_0_MASK,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
.ops = &clkops_null,
};
static const struct clksel sysclkout_pre_sel[] = {
{ .parent = &clk_32768_ck, .rates = div_1_0_rates },
{ .parent = &l3_gclk, .rates = div_1_1_rates },
{ .parent = &dpll_ddr_m2_ck, .rates = div_1_2_rates },
{ .parent = &dpll_per_m2_ck, .rates = div_1_3_rates },
{ .parent = &lcd_gclk, .rates = div_1_4_rates },
{ .parent = NULL },
};
static struct clk sysclkout_pre_ck = {
.name = "sysclkout_pre_ck",
.parent = &clk_32768_ck,
.init = &omap2_init_clksel_parent,
.clksel = sysclkout_pre_sel,
.clksel_reg = AM33XX_CM_CLKOUT_CTRL,
.clksel_mask = AM33XX_CLKOUT2SOURCE_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
/* Divide by 8 clock rates with default clock is 1/1*/
static const struct clksel_rate div8_rates[] = {
{ .div = 1, .val = 0, .flags = RATE_IN_AM33XX },
{ .div = 2, .val = 1, .flags = RATE_IN_AM33XX },
{ .div = 3, .val = 2, .flags = RATE_IN_AM33XX },
{ .div = 4, .val = 3, .flags = RATE_IN_AM33XX },
{ .div = 5, .val = 4, .flags = RATE_IN_AM33XX },
{ .div = 6, .val = 5, .flags = RATE_IN_AM33XX },
{ .div = 7, .val = 6, .flags = RATE_IN_AM33XX },
{ .div = 8, .val = 7, .flags = RATE_IN_AM33XX },
{ .div = 0 },
};
static const struct clksel clkout2_div[] = {
{ .parent = &sysclkout_pre_ck, .rates = div8_rates },
{ .parent = NULL },
};
static struct clk clkout2_ck = {
.name = "clkout2_ck",
.parent = &sysclkout_pre_ck,
.ops = &clkops_omap2_dflt,
.clksel = clkout2_div,
.clksel_reg = AM33XX_CM_CLKOUT_CTRL,
.clksel_mask = AM33XX_CLKOUT2DIV_MASK,
.enable_reg = AM33XX_CM_CLKOUT_CTRL,
.enable_bit = AM33XX_CLKOUT2EN_SHIFT,
.recalc = &omap2_clksel_recalc,
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap2_clksel_set_rate,
};
static const struct clksel wdt_clkmux_sel[] = {
{ .parent = &clk_rc32k_ck, .rates = div_1_0_rates },
{ .parent = &clkdiv32k_ick, .rates = div_1_1_rates },
{ .parent = NULL },
};
static struct clk wdt1_fck = {
.name = "wdt1_fck",
.clkdm_name = "l4_wkup_clkdm",
.parent = &clk_rc32k_ck,
.init = &omap2_init_clksel_parent,
.clksel = wdt_clkmux_sel,
.clksel_reg = AM33XX_CLKSEL_WDT1_CLK,
.clksel_mask = AM33XX_CLKSEL_0_1_MASK,
.ops = &clkops_null,
.recalc = &omap2_clksel_recalc,
};
/*
* clkdev
*/
static struct omap_clk am33xx_clks[] = {
CLK(NULL, "clk_32768_ck", &clk_32768_ck, CK_AM33XX),
CLK(NULL, "clk_rc32k_ck", &clk_rc32k_ck, CK_AM33XX),
CLK(NULL, "virt_19200000_ck", &virt_19200000_ck, CK_AM33XX),
CLK(NULL, "virt_24000000_ck", &virt_24000000_ck, CK_AM33XX),
CLK(NULL, "virt_25000000_ck", &virt_25000000_ck, CK_AM33XX),
CLK(NULL, "virt_26000000_ck", &virt_26000000_ck, CK_AM33XX),
CLK(NULL, "sys_clkin_ck", &sys_clkin_ck, CK_AM33XX),
CLK(NULL, "tclkin_ck", &tclkin_ck, CK_AM33XX),
CLK(NULL, "dpll_core_ck", &dpll_core_ck, CK_AM33XX),
CLK(NULL, "dpll_core_x2_ck", &dpll_core_x2_ck, CK_AM33XX),
CLK(NULL, "dpll_core_m4_ck", &dpll_core_m4_ck, CK_AM33XX),
CLK(NULL, "dpll_core_m5_ck", &dpll_core_m5_ck, CK_AM33XX),
CLK(NULL, "dpll_core_m6_ck", &dpll_core_m6_ck, CK_AM33XX),
CLK(NULL, "dpll_mpu_ck", &dpll_mpu_ck, CK_AM33XX),
CLK("cpu0", NULL, &dpll_mpu_ck, CK_AM33XX),
CLK(NULL, "dpll_mpu_m2_ck", &dpll_mpu_m2_ck, CK_AM33XX),
CLK(NULL, "dpll_ddr_ck", &dpll_ddr_ck, CK_AM33XX),
CLK(NULL, "dpll_ddr_m2_ck", &dpll_ddr_m2_ck, CK_AM33XX),
CLK(NULL, "dpll_ddr_m2_div2_ck", &dpll_ddr_m2_div2_ck, CK_AM33XX),
CLK(NULL, "dpll_disp_ck", &dpll_disp_ck, CK_AM33XX),
CLK(NULL, "dpll_disp_m2_ck", &dpll_disp_m2_ck, CK_AM33XX),
CLK(NULL, "dpll_per_ck", &dpll_per_ck, CK_AM33XX),
CLK(NULL, "dpll_per_m2_ck", &dpll_per_m2_ck, CK_AM33XX),
CLK(NULL, "dpll_per_m2_div4_wkupdm_ck", &dpll_per_m2_div4_wkupdm_ck, CK_AM33XX),
CLK(NULL, "dpll_per_m2_div4_ck", &dpll_per_m2_div4_ck, CK_AM33XX),
CLK(NULL, "adc_tsc_fck", &adc_tsc_fck, CK_AM33XX),
CLK(NULL, "cefuse_fck", &cefuse_fck, CK_AM33XX),
CLK(NULL, "clkdiv32k_ick", &clkdiv32k_ick, CK_AM33XX),
CLK(NULL, "dcan0_fck", &dcan0_fck, CK_AM33XX),
CLK("481cc000.d_can", NULL, &dcan0_fck, CK_AM33XX),
CLK(NULL, "dcan1_fck", &dcan1_fck, CK_AM33XX),
CLK("481d0000.d_can", NULL, &dcan1_fck, CK_AM33XX),
CLK(NULL, "debugss_ick", &debugss_ick, CK_AM33XX),
CLK(NULL, "pruss_ocp_gclk", &pruss_ocp_gclk, CK_AM33XX),
CLK("davinci-mcasp.0", NULL, &mcasp0_fck, CK_AM33XX),
CLK("davinci-mcasp.1", NULL, &mcasp1_fck, CK_AM33XX),
CLK(NULL, "mcasp0_fck", &mcasp0_fck, CK_AM33XX),
CLK(NULL, "mcasp1_fck", &mcasp1_fck, CK_AM33XX),
CLK("NULL", "mmc2_fck", &mmc2_fck, CK_AM33XX),
CLK(NULL, "mmu_fck", &mmu_fck, CK_AM33XX),
CLK(NULL, "smartreflex0_fck", &smartreflex0_fck, CK_AM33XX),
CLK(NULL, "smartreflex1_fck", &smartreflex1_fck, CK_AM33XX),
CLK(NULL, "timer1_fck", &timer1_fck, CK_AM33XX),
CLK(NULL, "timer2_fck", &timer2_fck, CK_AM33XX),
CLK(NULL, "timer3_fck", &timer3_fck, CK_AM33XX),
CLK(NULL, "timer4_fck", &timer4_fck, CK_AM33XX),
CLK(NULL, "timer5_fck", &timer5_fck, CK_AM33XX),
CLK(NULL, "timer6_fck", &timer6_fck, CK_AM33XX),
CLK(NULL, "timer7_fck", &timer7_fck, CK_AM33XX),
CLK(NULL, "usbotg_fck", &usbotg_fck, CK_AM33XX),
CLK(NULL, "ieee5000_fck", &ieee5000_fck, CK_AM33XX),
CLK(NULL, "wdt1_fck", &wdt1_fck, CK_AM33XX),
CLK(NULL, "l4_rtc_gclk", &l4_rtc_gclk, CK_AM33XX),
CLK(NULL, "l3_gclk", &l3_gclk, CK_AM33XX),
CLK(NULL, "dpll_core_m4_div2_ck", &dpll_core_m4_div2_ck, CK_AM33XX),
CLK(NULL, "l4hs_gclk", &l4hs_gclk, CK_AM33XX),
CLK(NULL, "l3s_gclk", &l3s_gclk, CK_AM33XX),
CLK(NULL, "l4fw_gclk", &l4fw_gclk, CK_AM33XX),
CLK(NULL, "l4ls_gclk", &l4ls_gclk, CK_AM33XX),
CLK(NULL, "clk_24mhz", &clk_24mhz, CK_AM33XX),
CLK(NULL, "sysclk_div_ck", &sysclk_div_ck, CK_AM33XX),
CLK(NULL, "cpsw_125mhz_gclk", &cpsw_125mhz_gclk, CK_AM33XX),
CLK(NULL, "cpsw_cpts_rft_clk", &cpsw_cpts_rft_clk, CK_AM33XX),
CLK(NULL, "gpio0_dbclk_mux_ck", &gpio0_dbclk_mux_ck, CK_AM33XX),
CLK(NULL, "gpio0_dbclk", &gpio0_dbclk, CK_AM33XX),
CLK(NULL, "gpio1_dbclk", &gpio1_dbclk, CK_AM33XX),
CLK(NULL, "gpio2_dbclk", &gpio2_dbclk, CK_AM33XX),
CLK(NULL, "gpio3_dbclk", &gpio3_dbclk, CK_AM33XX),
CLK(NULL, "lcd_gclk", &lcd_gclk, CK_AM33XX),
CLK(NULL, "mmc_clk", &mmc_clk, CK_AM33XX),
CLK(NULL, "gfx_fclk_clksel_ck", &gfx_fclk_clksel_ck, CK_AM33XX),
CLK(NULL, "gfx_fck_div_ck", &gfx_fck_div_ck, CK_AM33XX),
CLK(NULL, "sysclkout_pre_ck", &sysclkout_pre_ck, CK_AM33XX),
CLK(NULL, "clkout2_ck", &clkout2_ck, CK_AM33XX),
CLK(NULL, "timer_32k_ck", &clkdiv32k_ick, CK_AM33XX),
CLK(NULL, "timer_sys_ck", &sys_clkin_ck, CK_AM33XX),
};
int __init am33xx_clk_init(void)
{
struct omap_clk *c;
u32 cpu_clkflg;
if (soc_is_am33xx()) {
cpu_mask = RATE_IN_AM33XX;
cpu_clkflg = CK_AM33XX;
}
clk_init(&omap2_clk_functions);
for (c = am33xx_clks; c < am33xx_clks + ARRAY_SIZE(am33xx_clks); c++)
clk_preinit(c->lk.clk);
for (c = am33xx_clks; c < am33xx_clks + ARRAY_SIZE(am33xx_clks); c++) {
if (c->cpu & cpu_clkflg) {
clkdev_add(&c->lk);
clk_register(c->lk.clk);
omap2_init_clk_clkdm(c->lk.clk);
}
}
recalculate_root_clocks();
/*
* Only enable those clocks we will need, let the drivers
* enable other clocks as necessary
*/
clk_enable_init_clocks();
return 0;
}
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