diff options
Diffstat (limited to 'arch/arm/mach-omap1/clock_data.c')
| -rw-r--r-- | arch/arm/mach-omap1/clock_data.c | 847 |
1 files changed, 847 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/clock_data.c b/arch/arm/mach-omap1/clock_data.c new file mode 100644 index 00000000000..65e7b5b85d8 --- /dev/null +++ b/arch/arm/mach-omap1/clock_data.c @@ -0,0 +1,847 @@ +/* + * linux/arch/arm/mach-omap1/clock_data.c + * + * Copyright (C) 2004 - 2005, 2009 Nokia corporation + * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> + * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <asm/mach-types.h> /* for machine_is_* */ + +#include <plat/clock.h> +#include <plat/cpu.h> +#include <plat/clkdev_omap.h> +#include <plat/usb.h> /* for OTG_BASE */ + +#include "clock.h" + +/*------------------------------------------------------------------------ + * Omap1 clocks + *-------------------------------------------------------------------------*/ + +/* XXX is this necessary? */ +static struct clk dummy_ck = { + .name = "dummy", + .ops = &clkops_dummy, + .flags = RATE_FIXED, +}; + +static struct clk ck_ref = { + .name = "ck_ref", + .ops = &clkops_null, + .rate = 12000000, +}; + +static struct clk ck_dpll1 = { + .name = "ck_dpll1", + .ops = &clkops_null, + .parent = &ck_ref, +}; + +/* + * FIXME: This clock seems to be necessary but no-one has asked for its + * activation. [ FIX: SoSSI, SSR ] + */ +static struct arm_idlect1_clk ck_dpll1out = { + .clk = { + .name = "ck_dpll1out", + .ops = &clkops_generic, + .parent = &ck_dpll1, + .flags = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT | + ENABLE_ON_INIT, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_CKOUT_ARM, + .recalc = &followparent_recalc, + }, + .idlect_shift = 12, +}; + +static struct clk sossi_ck = { + .name = "ck_sossi", + .ops = &clkops_generic, + .parent = &ck_dpll1out.clk, + .flags = CLOCK_NO_IDLE_PARENT | ENABLE_REG_32BIT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_1), + .enable_bit = 16, + .recalc = &omap1_sossi_recalc, + .set_rate = &omap1_set_sossi_rate, +}; + +static struct clk arm_ck = { + .name = "arm_ck", + .ops = &clkops_null, + .parent = &ck_dpll1, + .rate_offset = CKCTL_ARMDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, +}; + +static struct arm_idlect1_clk armper_ck = { + .clk = { + .name = "armper_ck", + .ops = &clkops_generic, + .parent = &ck_dpll1, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_PERCK, + .rate_offset = CKCTL_PERDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, + }, + .idlect_shift = 2, +}; + +/* + * FIXME: This clock seems to be necessary but no-one has asked for its + * activation. [ GPIO code for 1510 ] + */ +static struct clk arm_gpio_ck = { + .name = "arm_gpio_ck", + .ops = &clkops_generic, + .parent = &ck_dpll1, + .flags = ENABLE_ON_INIT, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_GPIOCK, + .recalc = &followparent_recalc, +}; + +static struct arm_idlect1_clk armxor_ck = { + .clk = { + .name = "armxor_ck", + .ops = &clkops_generic, + .parent = &ck_ref, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_XORPCK, + .recalc = &followparent_recalc, + }, + .idlect_shift = 1, +}; + +static struct arm_idlect1_clk armtim_ck = { + .clk = { + .name = "armtim_ck", + .ops = &clkops_generic, + .parent = &ck_ref, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_TIMCK, + .recalc = &followparent_recalc, + }, + .idlect_shift = 9, +}; + +static struct arm_idlect1_clk armwdt_ck = { + .clk = { + .name = "armwdt_ck", + .ops = &clkops_generic, + .parent = &ck_ref, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_WDTCK, + .recalc = &omap1_watchdog_recalc, + }, + .idlect_shift = 0, +}; + +static struct clk arminth_ck16xx = { + .name = "arminth_ck", + .ops = &clkops_null, + .parent = &arm_ck, + .recalc = &followparent_recalc, + /* Note: On 16xx the frequency can be divided by 2 by programming + * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1 + * + * 1510 version is in TC clocks. + */ +}; + +static struct clk dsp_ck = { + .name = "dsp_ck", + .ops = &clkops_generic, + .parent = &ck_dpll1, + .enable_reg = OMAP1_IO_ADDRESS(ARM_CKCTL), + .enable_bit = EN_DSPCK, + .rate_offset = CKCTL_DSPDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, +}; + +static struct clk dspmmu_ck = { + .name = "dspmmu_ck", + .ops = &clkops_null, + .parent = &ck_dpll1, + .rate_offset = CKCTL_DSPMMUDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, +}; + +static struct clk dspper_ck = { + .name = "dspper_ck", + .ops = &clkops_dspck, + .parent = &ck_dpll1, + .enable_reg = DSP_IDLECT2, + .enable_bit = EN_PERCK, + .rate_offset = CKCTL_PERDIV_OFFSET, + .recalc = &omap1_ckctl_recalc_dsp_domain, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = &omap1_clk_set_rate_dsp_domain, +}; + +static struct clk dspxor_ck = { + .name = "dspxor_ck", + .ops = &clkops_dspck, + .parent = &ck_ref, + .enable_reg = DSP_IDLECT2, + .enable_bit = EN_XORPCK, + .recalc = &followparent_recalc, +}; + +static struct clk dsptim_ck = { + .name = "dsptim_ck", + .ops = &clkops_dspck, + .parent = &ck_ref, + .enable_reg = DSP_IDLECT2, + .enable_bit = EN_DSPTIMCK, + .recalc = &followparent_recalc, +}; + +/* Tie ARM_IDLECT1:IDLIF_ARM to this logical clock structure */ +static struct arm_idlect1_clk tc_ck = { + .clk = { + .name = "tc_ck", + .ops = &clkops_null, + .parent = &ck_dpll1, + .flags = CLOCK_IDLE_CONTROL, + .rate_offset = CKCTL_TCDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, + }, + .idlect_shift = 6, +}; + +static struct clk arminth_ck1510 = { + .name = "arminth_ck", + .ops = &clkops_null, + .parent = &tc_ck.clk, + .recalc = &followparent_recalc, + /* Note: On 1510 the frequency follows TC_CK + * + * 16xx version is in MPU clocks. + */ +}; + +static struct clk tipb_ck = { + /* No-idle controlled by "tc_ck" */ + .name = "tipb_ck", + .ops = &clkops_null, + .parent = &tc_ck.clk, + .recalc = &followparent_recalc, +}; + +static struct clk l3_ocpi_ck = { + /* No-idle controlled by "tc_ck" */ + .name = "l3_ocpi_ck", + .ops = &clkops_generic, + .parent = &tc_ck.clk, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), + .enable_bit = EN_OCPI_CK, + .recalc = &followparent_recalc, +}; + +static struct clk tc1_ck = { + .name = "tc1_ck", + .ops = &clkops_generic, + .parent = &tc_ck.clk, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), + .enable_bit = EN_TC1_CK, + .recalc = &followparent_recalc, +}; + +/* + * FIXME: This clock seems to be necessary but no-one has asked for its + * activation. [ pm.c (SRAM), CCP, Camera ] + */ +static struct clk tc2_ck = { + .name = "tc2_ck", + .ops = &clkops_generic, + .parent = &tc_ck.clk, + .flags = ENABLE_ON_INIT, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), + .enable_bit = EN_TC2_CK, + .recalc = &followparent_recalc, +}; + +static struct clk dma_ck = { + /* No-idle controlled by "tc_ck" */ + .name = "dma_ck", + .ops = &clkops_null, + .parent = &tc_ck.clk, + .recalc = &followparent_recalc, +}; + +static struct clk dma_lcdfree_ck = { + .name = "dma_lcdfree_ck", + .ops = &clkops_null, + .parent = &tc_ck.clk, + .recalc = &followparent_recalc, +}; + +static struct arm_idlect1_clk api_ck = { + .clk = { + .name = "api_ck", + .ops = &clkops_generic, + .parent = &tc_ck.clk, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_APICK, + .recalc = &followparent_recalc, + }, + .idlect_shift = 8, +}; + +static struct arm_idlect1_clk lb_ck = { + .clk = { + .name = "lb_ck", + .ops = &clkops_generic, + .parent = &tc_ck.clk, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_LBCK, + .recalc = &followparent_recalc, + }, + .idlect_shift = 4, +}; + +static struct clk rhea1_ck = { + .name = "rhea1_ck", + .ops = &clkops_null, + .parent = &tc_ck.clk, + .recalc = &followparent_recalc, +}; + +static struct clk rhea2_ck = { + .name = "rhea2_ck", + .ops = &clkops_null, + .parent = &tc_ck.clk, + .recalc = &followparent_recalc, +}; + +static struct clk lcd_ck_16xx = { + .name = "lcd_ck", + .ops = &clkops_generic, + .parent = &ck_dpll1, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_LCDCK, + .rate_offset = CKCTL_LCDDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, +}; + +static struct arm_idlect1_clk lcd_ck_1510 = { + .clk = { + .name = "lcd_ck", + .ops = &clkops_generic, + .parent = &ck_dpll1, + .flags = CLOCK_IDLE_CONTROL, + .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), + .enable_bit = EN_LCDCK, + .rate_offset = CKCTL_LCDDIV_OFFSET, + .recalc = &omap1_ckctl_recalc, + .round_rate = omap1_clk_round_rate_ckctl_arm, + .set_rate = omap1_clk_set_rate_ckctl_arm, + }, + .idlect_shift = 3, +}; + +static struct clk uart1_1510 = { + .name = "uart1_ck", + .ops = &clkops_null, + /* Direct from ULPD, no real parent */ + .parent = &armper_ck.clk, + .rate = 12000000, + .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 29, /* Chooses between 12MHz and 48MHz */ + .set_rate = &omap1_set_uart_rate, + .recalc = &omap1_uart_recalc, +}; + +static struct uart_clk uart1_16xx = { + .clk = { + .name = "uart1_ck", + .ops = &clkops_uart, + /* Direct from ULPD, no real parent */ + .parent = &armper_ck.clk, + .rate = 48000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT | + CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 29, + }, + .sysc_addr = 0xfffb0054, +}; + +static struct clk uart2_ck = { + .name = "uart2_ck", + .ops = &clkops_null, + /* Direct from ULPD, no real parent */ + .parent = &armper_ck.clk, + .rate = 12000000, + .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 30, /* Chooses between 12MHz and 48MHz */ + .set_rate = &omap1_set_uart_rate, + .recalc = &omap1_uart_recalc, +}; + +static struct clk uart3_1510 = { + .name = "uart3_ck", + .ops = &clkops_null, + /* Direct from ULPD, no real parent */ + .parent = &armper_ck.clk, + .rate = 12000000, + .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 31, /* Chooses between 12MHz and 48MHz */ + .set_rate = &omap1_set_uart_rate, + .recalc = &omap1_uart_recalc, +}; + +static struct uart_clk uart3_16xx = { + .clk = { + .name = "uart3_ck", + .ops = &clkops_uart, + /* Direct from ULPD, no real parent */ + .parent = &armper_ck.clk, + .rate = 48000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT | + CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 31, + }, + .sysc_addr = 0xfffb9854, +}; + +static struct clk usb_clko = { /* 6 MHz output on W4_USB_CLKO */ + .name = "usb_clko", + .ops = &clkops_generic, + /* Direct from ULPD, no parent */ + .rate = 6000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT, + .enable_reg = OMAP1_IO_ADDRESS(ULPD_CLOCK_CTRL), + .enable_bit = USB_MCLK_EN_BIT, +}; + +static struct clk usb_hhc_ck1510 = { + .name = "usb_hhc_ck", + .ops = &clkops_generic, + /* Direct from ULPD, no parent */ + .rate = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */ + .flags = RATE_FIXED | ENABLE_REG_32BIT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = USB_HOST_HHC_UHOST_EN, +}; + +static struct clk usb_hhc_ck16xx = { + .name = "usb_hhc_ck", + .ops = &clkops_generic, + /* Direct from ULPD, no parent */ + .rate = 48000000, + /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */ + .flags = RATE_FIXED | ENABLE_REG_32BIT, + .enable_reg = OMAP1_IO_ADDRESS(OTG_BASE + 0x08), /* OTG_SYSCON_2 */ + .enable_bit = 8 /* UHOST_EN */, +}; + +static struct clk usb_dc_ck = { + .name = "usb_dc_ck", + .ops = &clkops_generic, + /* Direct from ULPD, no parent */ + .rate = 48000000, + .flags = RATE_FIXED, + .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), + .enable_bit = 4, +}; + +static struct clk usb_dc_ck7xx = { + .name = "usb_dc_ck", + .ops = &clkops_generic, + /* Direct from ULPD, no parent */ + .rate = 48000000, + .flags = RATE_FIXED, + .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), + .enable_bit = 8, +}; + +static struct clk mclk_1510 = { + .name = "mclk", + .ops = &clkops_generic, + /* Direct from ULPD, no parent. May be enabled by ext hardware. */ + .rate = 12000000, + .flags = RATE_FIXED, + .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), + .enable_bit = 6, +}; + +static struct clk mclk_16xx = { + .name = "mclk", + .ops = &clkops_generic, + /* Direct from ULPD, no parent. May be enabled by ext hardware. */ + .enable_reg = OMAP1_IO_ADDRESS(COM_CLK_DIV_CTRL_SEL), + .enable_bit = COM_ULPD_PLL_CLK_REQ, + .set_rate = &omap1_set_ext_clk_rate, + .round_rate = &omap1_round_ext_clk_rate, + .init = &omap1_init_ext_clk, +}; + +static struct clk bclk_1510 = { + .name = "bclk", + .ops = &clkops_generic, + /* Direct from ULPD, no parent. May be enabled by ext hardware. */ + .rate = 12000000, + .flags = RATE_FIXED, +}; + +static struct clk bclk_16xx = { + .name = "bclk", + .ops = &clkops_generic, + /* Direct from ULPD, no parent. May be enabled by ext hardware. */ + .enable_reg = OMAP1_IO_ADDRESS(SWD_CLK_DIV_CTRL_SEL), + .enable_bit = SWD_ULPD_PLL_CLK_REQ, + .set_rate = &omap1_set_ext_clk_rate, + .round_rate = &omap1_round_ext_clk_rate, + .init = &omap1_init_ext_clk, +}; + +static struct clk mmc1_ck = { + .name = "mmc_ck", + .ops = &clkops_generic, + /* Functional clock is direct from ULPD, interface clock is ARMPER */ + .parent = &armper_ck.clk, + .rate = 48000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 23, +}; + +static struct clk mmc2_ck = { + .name = "mmc_ck", + .id = 1, + .ops = &clkops_generic, + /* Functional clock is direct from ULPD, interface clock is ARMPER */ + .parent = &armper_ck.clk, + .rate = 48000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), + .enable_bit = 20, +}; + +static struct clk mmc3_ck = { + .name = "mmc_ck", + .id = 2, + .ops = &clkops_generic, + /* Functional clock is direct from ULPD, interface clock is ARMPER */ + .parent = &armper_ck.clk, + .rate = 48000000, + .flags = RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, + .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), + .enable_bit = 12, +}; + +static struct clk virtual_ck_mpu = { + .name = "mpu", + .ops = &clkops_null, + .parent = &arm_ck, /* Is smarter alias for */ + .recalc = &followparent_recalc, + .set_rate = &omap1_select_table_rate, + .round_rate = &omap1_round_to_table_rate, +}; + +/* virtual functional clock domain for I2C. Just for making sure that ARMXOR_CK +remains active during MPU idle whenever this is enabled */ +static struct clk i2c_fck = { + .name = "i2c_fck", + .id = 1, + .ops = &clkops_null, + .flags = CLOCK_NO_IDLE_PARENT, + .parent = &armxor_ck.clk, + .recalc = &followparent_recalc, +}; + +static struct clk i2c_ick = { + .name = "i2c_ick", + .id = 1, + .ops = &clkops_null, + .flags = CLOCK_NO_IDLE_PARENT, + .parent = &armper_ck.clk, + .recalc = &followparent_recalc, +}; + +/* + * clkdev integration + */ + +static struct omap_clk omap_clks[] = { + /* non-ULPD clocks */ + CLK(NULL, "ck_ref", &ck_ref, CK_16XX | CK_1510 | CK_310 | CK_7XX), + CLK(NULL, "ck_dpll1", &ck_dpll1, CK_16XX | CK_1510 | CK_310 | CK_7XX), + /* CK_GEN1 clocks */ + CLK(NULL, "ck_dpll1out", &ck_dpll1out.clk, CK_16XX), + CLK(NULL, "ck_sossi", &sossi_ck, CK_16XX), + CLK(NULL, "arm_ck", &arm_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "armper_ck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "arm_gpio_ck", &arm_gpio_ck, CK_1510 | CK_310), + CLK(NULL, "armxor_ck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), + CLK(NULL, "armtim_ck", &armtim_ck.clk, CK_16XX | CK_1510 | CK_310), + CLK("omap_wdt", "fck", &armwdt_ck.clk, CK_16XX | CK_1510 | CK_310), + CLK("omap_wdt", "ick", &armper_ck.clk, CK_16XX), + CLK("omap_wdt", "ick", &dummy_ck, CK_1510 | CK_310), + CLK(NULL, "arminth_ck", &arminth_ck1510, CK_1510 | CK_310), + CLK(NULL, "arminth_ck", &arminth_ck16xx, CK_16XX), + /* CK_GEN2 clocks */ + CLK(NULL, "dsp_ck", &dsp_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "dspmmu_ck", &dspmmu_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "dspper_ck", &dspper_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "dspxor_ck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "dsptim_ck", &dsptim_ck, CK_16XX | CK_1510 | CK_310), + /* CK_GEN3 clocks */ + CLK(NULL, "tc_ck", &tc_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), + CLK(NULL, "tipb_ck", &tipb_ck, CK_1510 | CK_310), + CLK(NULL, "l3_ocpi_ck", &l3_ocpi_ck, CK_16XX | CK_7XX), + CLK(NULL, "tc1_ck", &tc1_ck, CK_16XX), + CLK(NULL, "tc2_ck", &tc2_ck, CK_16XX), + CLK(NULL, "dma_ck", &dma_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "dma_lcdfree_ck", &dma_lcdfree_ck, CK_16XX), + CLK(NULL, "api_ck", &api_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), + CLK(NULL, "lb_ck", &lb_ck.clk, CK_1510 | CK_310), + CLK(NULL, "rhea1_ck", &rhea1_ck, CK_16XX), + CLK(NULL, "rhea2_ck", &rhea2_ck, CK_16XX), + CLK(NULL, "lcd_ck", &lcd_ck_16xx, CK_16XX | CK_7XX), + CLK(NULL, "lcd_ck", &lcd_ck_1510.clk, CK_1510 | CK_310), + /* ULPD clocks */ + CLK(NULL, "uart1_ck", &uart1_1510, CK_1510 | CK_310), + CLK(NULL, "uart1_ck", &uart1_16xx.clk, CK_16XX), + CLK(NULL, "uart2_ck", &uart2_ck, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "uart3_ck", &uart3_1510, CK_1510 | CK_310), + CLK(NULL, "uart3_ck", &uart3_16xx.clk, CK_16XX), + CLK(NULL, "usb_clko", &usb_clko, CK_16XX | CK_1510 | CK_310), + CLK(NULL, "usb_hhc_ck", &usb_hhc_ck1510, CK_1510 | CK_310), + CLK(NULL, "usb_hhc_ck", &usb_hhc_ck16xx, CK_16XX), + CLK(NULL, "usb_dc_ck", &usb_dc_ck, CK_16XX), + CLK(NULL, "usb_dc_ck", &usb_dc_ck7xx, CK_7XX), + CLK(NULL, "mclk", &mclk_1510, CK_1510 | CK_310), + CLK(NULL, "mclk", &mclk_16xx, CK_16XX), + CLK(NULL, "bclk", &bclk_1510, CK_1510 | CK_310), + CLK(NULL, "bclk", &bclk_16xx, CK_16XX), + CLK("mmci-omap.0", "fck", &mmc1_ck, CK_16XX | CK_1510 | CK_310), + CLK("mmci-omap.0", "fck", &mmc3_ck, CK_7XX), + CLK("mmci-omap.0", "ick", &armper_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), + CLK("mmci-omap.1", "fck", &mmc2_ck, CK_16XX), + CLK("mmci-omap.1", "ick", &armper_ck.clk, CK_16XX), + /* Virtual clocks */ + CLK(NULL, "mpu", &virtual_ck_mpu, CK_16XX | CK_1510 | CK_310), + CLK("i2c_omap.1", "fck", &i2c_fck, CK_16XX | CK_1510 | CK_310 | CK_7XX), + CLK("i2c_omap.1", "ick", &i2c_ick, CK_16XX), + CLK("i2c_omap.1", "ick", &dummy_ck, CK_1510 | CK_310 | CK_7XX), + CLK("omap1_spi100k.1", "fck", &dummy_ck, CK_7XX), + CLK("omap1_spi100k.1", "ick", &dummy_ck, CK_7XX), + CLK("omap1_spi100k.2", "fck", &dummy_ck, CK_7XX), + CLK("omap1_spi100k.2", "ick", &dummy_ck, CK_7XX), + CLK("omap_uwire", "fck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310), + CLK("omap-mcbsp.1", "ick", &dspper_ck, CK_16XX), + CLK("omap-mcbsp.1", "ick", &dummy_ck, CK_1510 | CK_310), + CLK("omap-mcbsp.2", "ick", &armper_ck.clk, CK_16XX), + CLK("omap-mcbsp.2", "ick", &dummy_ck, CK_1510 | CK_310), + CLK("omap-mcbsp.3", "ick", &dspper_ck, CK_16XX), + CLK("omap-mcbsp.3", "ick", &dummy_ck, CK_1510 | CK_310), + CLK("omap-mcbsp.1", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), + CLK("omap-mcbsp.2", "fck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), + CLK("omap-mcbsp.3", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), +}; + +/* + * init + */ + +static struct clk_functions omap1_clk_functions = { + .clk_enable = omap1_clk_enable, + .clk_disable = omap1_clk_disable, + .clk_round_rate = omap1_clk_round_rate, + .clk_set_rate = omap1_clk_set_rate, + .clk_disable_unused = omap1_clk_disable_unused, +}; + +int __init omap1_clk_init(void) +{ + struct omap_clk *c; + const struct omap_clock_config *info; + int crystal_type = 0; /* Default 12 MHz */ + u32 reg, cpu_mask; + +#ifdef CONFIG_DEBUG_LL + /* + * Resets some clocks that may be left on from bootloader, + * but leaves serial clocks on. + */ + omap_writel(0x3 << 29, MOD_CONF_CTRL_0); +#endif + + /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */ + reg = omap_readw(SOFT_REQ_REG) & (1 << 4); + omap_writew(reg, SOFT_REQ_REG); + if (!cpu_is_omap15xx()) + omap_writew(0, SOFT_REQ_REG2); + + clk_init(&omap1_clk_functions); + + /* By default all idlect1 clocks are allowed to idle */ + arm_idlect1_mask = ~0; + + for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) + clk_preinit(c->lk.clk); + + cpu_mask = 0; + if (cpu_is_omap16xx()) + cpu_mask |= CK_16XX; + if (cpu_is_omap1510()) + cpu_mask |= CK_1510; + if (cpu_is_omap7xx()) + cpu_mask |= CK_7XX; + if (cpu_is_omap310()) + cpu_mask |= CK_310; + + for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) + if (c->cpu & cpu_mask) { + clkdev_add(&c->lk); + clk_register(c->lk.clk); + } + + /* Pointers to these clocks are needed by code in clock.c */ + api_ck_p = clk_get(NULL, "api_ck"); + ck_dpll1_p = clk_get(NULL, "ck_dpll1"); + ck_ref_p = clk_get(NULL, "ck_ref"); + + info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config); + if (info != NULL) { + if (!cpu_is_omap15xx()) + crystal_type = info->system_clock_type; + } + +#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850) + ck_ref.rate = 13000000; +#elif defined(CONFIG_ARCH_OMAP16XX) + if (crystal_type == 2) + ck_ref.rate = 19200000; +#endif + + pr_info("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: " + "0x%04x\n", omap_readw(ARM_SYSST), omap_readw(DPLL_CTL), + omap_readw(ARM_CKCTL)); + + /* We want to be in syncronous scalable mode */ + omap_writew(0x1000, ARM_SYSST); + +#ifdef CONFIG_OMAP_CLOCKS_SET_BY_BOOTLOADER + /* Use values set by bootloader. Determine PLL rate and recalculate + * dependent clocks as if kernel had changed PLL or divisors. + */ + { + unsigned pll_ctl_val = omap_readw(DPLL_CTL); + + ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */ + if (pll_ctl_val & 0x10) { + /* PLL enabled, apply multiplier and divisor */ + if (pll_ctl_val & 0xf80) + ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7; + ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1; + } else { + /* PLL disabled, apply bypass divisor */ + switch (pll_ctl_val & 0xc) { + case 0: + break; + case 0x4: + ck_dpll1.rate /= 2; + break; + default: + ck_dpll1.rate /= 4; + break; + } + } + } +#else + /* Find the highest supported frequency and enable it */ + if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) { + printk(KERN_ERR "System frequencies not set. Check your config.\n"); + /* Guess sane values (60MHz) */ + omap_writew(0x2290, DPLL_CTL); + omap_writew(cpu_is_omap7xx() ? 0x3005 : 0x1005, ARM_CKCTL); + ck_dpll1.rate = 60000000; + } +#endif + propagate_rate(&ck_dpll1); + /* Cache rates for clocks connected to ck_ref (not dpll1) */ + propagate_rate(&ck_ref); + printk(KERN_INFO "Clocking rate (xtal/DPLL1/MPU): " + "%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n", + ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10, + ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10, + arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10); + +#if defined(CONFIG_MACH_OMAP_PERSEUS2) || defined(CONFIG_MACH_OMAP_FSAMPLE) + /* Select slicer output as OMAP input clock */ + omap_writew(omap_readw(OMAP7XX_PCC_UPLD_CTRL) & ~0x1, OMAP7XX_PCC_UPLD_CTRL); +#endif + + /* Amstrad Delta wants BCLK high when inactive */ + if (machine_is_ams_delta()) + omap_writel(omap_readl(ULPD_CLOCK_CTRL) | + (1 << SDW_MCLK_INV_BIT), + ULPD_CLOCK_CTRL); + + /* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */ + /* (on 730, bit 13 must not be cleared) */ + if (cpu_is_omap7xx()) + omap_writew(omap_readw(ARM_CKCTL) & 0x2fff, ARM_CKCTL); + else + omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL); + + /* Put DSP/MPUI into reset until needed */ + omap_writew(0, ARM_RSTCT1); + omap_writew(1, ARM_RSTCT2); + omap_writew(0x400, ARM_IDLECT1); + + /* + * According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8) + * of the ARM_IDLECT2 register must be set to zero. The power-on + * default value of this bit is one. + */ + omap_writew(0x0000, ARM_IDLECT2); /* Turn LCD clock off also */ + + /* + * Only enable those clocks we will need, let the drivers + * enable other clocks as necessary + */ + clk_enable(&armper_ck.clk); + clk_enable(&armxor_ck.clk); + clk_enable(&armtim_ck.clk); /* This should be done by timer code */ + + if (cpu_is_omap15xx()) + clk_enable(&arm_gpio_ck); + + return 0; +} |