- 根目录:
- drivers
- clk
- tegra
- clk-tegra20.c
/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk/tegra.h>
#include <linux/delay.h>
#include "clk.h"
#define RST_DEVICES_L 0x004
#define RST_DEVICES_H 0x008
#define RST_DEVICES_U 0x00c
#define RST_DEVICES_SET_L 0x300
#define RST_DEVICES_CLR_L 0x304
#define RST_DEVICES_SET_H 0x308
#define RST_DEVICES_CLR_H 0x30c
#define RST_DEVICES_SET_U 0x310
#define RST_DEVICES_CLR_U 0x314
#define RST_DEVICES_NUM 3
#define CLK_OUT_ENB_L 0x010
#define CLK_OUT_ENB_H 0x014
#define CLK_OUT_ENB_U 0x018
#define CLK_OUT_ENB_SET_L 0x320
#define CLK_OUT_ENB_CLR_L 0x324
#define CLK_OUT_ENB_SET_H 0x328
#define CLK_OUT_ENB_CLR_H 0x32c
#define CLK_OUT_ENB_SET_U 0x330
#define CLK_OUT_ENB_CLR_U 0x334
#define CLK_OUT_ENB_NUM 3
#define OSC_CTRL 0x50
#define OSC_CTRL_OSC_FREQ_MASK (3<<30)
#define OSC_CTRL_OSC_FREQ_13MHZ (0<<30)
#define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30)
#define OSC_CTRL_OSC_FREQ_12MHZ (2<<30)
#define OSC_CTRL_OSC_FREQ_26MHZ (3<<30)
#define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK)
#define OSC_CTRL_PLL_REF_DIV_MASK (3<<28)
#define OSC_CTRL_PLL_REF_DIV_1 (0<<28)
#define OSC_CTRL_PLL_REF_DIV_2 (1<<28)
#define OSC_CTRL_PLL_REF_DIV_4 (2<<28)
#define OSC_FREQ_DET 0x58
#define OSC_FREQ_DET_TRIG (1<<31)
#define OSC_FREQ_DET_STATUS 0x5c
#define OSC_FREQ_DET_BUSY (1<<31)
#define OSC_FREQ_DET_CNT_MASK 0xFFFF
#define PLLS_BASE 0xf0
#define PLLS_MISC 0xf4
#define PLLC_BASE 0x80
#define PLLC_MISC 0x8c
#define PLLM_BASE 0x90
#define PLLM_MISC 0x9c
#define PLLP_BASE 0xa0
#define PLLP_MISC 0xac
#define PLLA_BASE 0xb0
#define PLLA_MISC 0xbc
#define PLLU_BASE 0xc0
#define PLLU_MISC 0xcc
#define PLLD_BASE 0xd0
#define PLLD_MISC 0xdc
#define PLLX_BASE 0xe0
#define PLLX_MISC 0xe4
#define PLLE_BASE 0xe8
#define PLLE_MISC 0xec
#define PLL_BASE_LOCK BIT(27)
#define PLLE_MISC_LOCK BIT(11)
#define PLL_MISC_LOCK_ENABLE 18
#define PLLDU_MISC_LOCK_ENABLE 22
#define PLLE_MISC_LOCK_ENABLE 9
#define PLLC_OUT 0x84
#define PLLM_OUT 0x94
#define PLLP_OUTA 0xa4
#define PLLP_OUTB 0xa8
#define PLLA_OUT 0xb4
#define CCLK_BURST_POLICY 0x20
#define SUPER_CCLK_DIVIDER 0x24
#define SCLK_BURST_POLICY 0x28
#define SUPER_SCLK_DIVIDER 0x2c
#define CLK_SYSTEM_RATE 0x30
#define CCLK_BURST_POLICY_SHIFT 28
#define CCLK_RUN_POLICY_SHIFT 4
#define CCLK_IDLE_POLICY_SHIFT 0
#define CCLK_IDLE_POLICY 1
#define CCLK_RUN_POLICY 2
#define CCLK_BURST_POLICY_PLLX 8
#define CLK_SOURCE_I2S1 0x100
#define CLK_SOURCE_I2S2 0x104
#define CLK_SOURCE_SPDIF_OUT 0x108
#define CLK_SOURCE_SPDIF_IN 0x10c
#define CLK_SOURCE_PWM 0x110
#define CLK_SOURCE_SPI 0x114
#define CLK_SOURCE_SBC1 0x134
#define CLK_SOURCE_SBC2 0x118
#define CLK_SOURCE_SBC3 0x11c
#define CLK_SOURCE_SBC4 0x1b4
#define CLK_SOURCE_XIO 0x120
#define CLK_SOURCE_TWC 0x12c
#define CLK_SOURCE_IDE 0x144
#define CLK_SOURCE_NDFLASH 0x160
#define CLK_SOURCE_VFIR 0x168
#define CLK_SOURCE_SDMMC1 0x150
#define CLK_SOURCE_SDMMC2 0x154
#define CLK_SOURCE_SDMMC3 0x1bc
#define CLK_SOURCE_SDMMC4 0x164
#define CLK_SOURCE_CVE 0x140
#define CLK_SOURCE_TVO 0x188
#define CLK_SOURCE_TVDAC 0x194
#define CLK_SOURCE_HDMI 0x18c
#define CLK_SOURCE_DISP1 0x138
#define CLK_SOURCE_DISP2 0x13c
#define CLK_SOURCE_CSITE 0x1d4
#define CLK_SOURCE_LA 0x1f8
#define CLK_SOURCE_OWR 0x1cc
#define CLK_SOURCE_NOR 0x1d0
#define CLK_SOURCE_MIPI 0x174
#define CLK_SOURCE_I2C1 0x124
#define CLK_SOURCE_I2C2 0x198
#define CLK_SOURCE_I2C3 0x1b8
#define CLK_SOURCE_DVC 0x128
#define CLK_SOURCE_UARTA 0x178
#define CLK_SOURCE_UARTB 0x17c
#define CLK_SOURCE_UARTC 0x1a0
#define CLK_SOURCE_UARTD 0x1c0
#define CLK_SOURCE_UARTE 0x1c4
#define CLK_SOURCE_3D 0x158
#define CLK_SOURCE_2D 0x15c
#define CLK_SOURCE_MPE 0x170
#define CLK_SOURCE_EPP 0x16c
#define CLK_SOURCE_HOST1X 0x180
#define CLK_SOURCE_VDE 0x1c8
#define CLK_SOURCE_VI 0x148
#define CLK_SOURCE_VI_SENSOR 0x1a8
#define CLK_SOURCE_EMC 0x19c
#define AUDIO_SYNC_CLK 0x38
#define PMC_CTRL 0x0
#define PMC_CTRL_BLINK_ENB 7
#define PMC_DPD_PADS_ORIDE 0x1c
#define PMC_DPD_PADS_ORIDE_BLINK_ENB 20
#define PMC_BLINK_TIMER 0x40
/* Tegra CPU clock and reset control regs */
#define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX 0x4c
#define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET 0x340
#define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR 0x344
#define CPU_CLOCK(cpu) (0x1 << (8 + cpu))
#define CPU_RESET(cpu) (0x1111ul << (cpu))
#ifdef CONFIG_PM_SLEEP
static struct cpu_clk_suspend_context {
u32 pllx_misc;
u32 pllx_base;
u32 cpu_burst;
u32 clk_csite_src;
u32 cclk_divider;
} tegra20_cpu_clk_sctx;
#endif
static int periph_clk_enb_refcnt[CLK_OUT_ENB_NUM * 32];
static void __iomem *clk_base;
static void __iomem *pmc_base;
static DEFINE_SPINLOCK(pll_div_lock);
static DEFINE_SPINLOCK(sysrate_lock);
#define TEGRA_INIT_DATA_MUX(_name, _con_id, _dev_id, _parents, _offset, \
_clk_num, _regs, _gate_flags, _clk_id) \
TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \
30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP, \
_regs, _clk_num, periph_clk_enb_refcnt, \
_gate_flags, _clk_id)
#define TEGRA_INIT_DATA_INT(_name, _con_id, _dev_id, _parents, _offset, \
_clk_num, _regs, _gate_flags, _clk_id) \
TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \
30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_INT, _regs, \
_clk_num, periph_clk_enb_refcnt, _gate_flags, \
_clk_id)
#define TEGRA_INIT_DATA_DIV16(_name, _con_id, _dev_id, _parents, _offset, \
_clk_num, _regs, _gate_flags, _clk_id) \
TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \
30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, _regs, \
_clk_num, periph_clk_enb_refcnt, _gate_flags, \
_clk_id)
#define TEGRA_INIT_DATA_NODIV(_name, _con_id, _dev_id, _parents, _offset, \
_mux_shift, _mux_width, _clk_num, _regs, \
_gate_flags, _clk_id) \
TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \
_mux_shift, _mux_width, 0, 0, 0, 0, 0, _regs, \
_clk_num, periph_clk_enb_refcnt, _gate_flags, \
_clk_id)
/* IDs assigned here must be in sync with DT bindings definition
* for Tegra20 clocks .
*/
enum tegra20_clk {
cpu, ac97 = 3, rtc, timer, uarta, gpio = 8, sdmmc2, i2s1 = 11, i2c1,
ndflash, sdmmc1, sdmmc4, twc, pwm, i2s2, epp, gr2d = 21, usbd, isp,
gr3d, ide, disp2, disp1, host1x, vcp, cache2 = 31, mem, ahbdma, apbdma,
kbc = 36, stat_mon, pmc, fuse, kfuse, sbc1, nor, spi, sbc2, xio, sbc3,
dvc, dsi, mipi = 50, hdmi, csi, tvdac, i2c2, uartc, emc = 57, usb2,
usb3, mpe, vde, bsea, bsev, speedo, uartd, uarte, i2c3, sbc4, sdmmc3,
pex, owr, afi, csite, pcie_xclk, avpucq = 75, la, irama = 84, iramb,
iramc, iramd, cram2, audio_2x, clk_d, csus = 92, cdev2, cdev1,
uartb = 96, vfir, spdif_in, spdif_out, vi, vi_sensor, tvo, cve,
osc, clk_32k, clk_m, sclk, cclk, hclk, pclk, blink, pll_a, pll_a_out0,
pll_c, pll_c_out1, pll_d, pll_d_out0, pll_e, pll_m, pll_m_out1,
pll_p, pll_p_out1, pll_p_out2, pll_p_out3, pll_p_out4, pll_s, pll_u,
pll_x, cop, audio, pll_ref, twd, clk_max,
};
static struct clk *clks[clk_max];
static struct clk_onecell_data clk_data;
static struct tegra_clk_pll_freq_table pll_c_freq_table[] = {
{ 12000000, 600000000, 600, 12, 0, 8 },
{ 13000000, 600000000, 600, 13, 0, 8 },
{ 19200000, 600000000, 500, 16, 0, 6 },
{ 26000000, 600000000, 600, 26, 0, 8 },
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_m_freq_table[] = {
{ 12000000, 666000000, 666, 12, 0, 8},
{ 13000000, 666000000, 666, 13, 0, 8},
{ 19200000, 666000000, 555, 16, 0, 8},
{ 26000000, 666000000, 666, 26, 0, 8},
{ 12000000, 600000000, 600, 12, 0, 8},
{ 13000000, 600000000, 600, 13, 0, 8},
{ 19200000, 600000000, 375, 12, 0, 6},
{ 26000000, 600000000, 600, 26, 0, 8},
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_p_freq_table[] = {
{ 12000000, 216000000, 432, 12, 1, 8},
{ 13000000, 216000000, 432, 13, 1, 8},
{ 19200000, 216000000, 90, 4, 1, 1},
{ 26000000, 216000000, 432, 26, 1, 8},
{ 12000000, 432000000, 432, 12, 0, 8},
{ 13000000, 432000000, 432, 13, 0, 8},
{ 19200000, 432000000, 90, 4, 0, 1},
{ 26000000, 432000000, 432, 26, 0, 8},
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_a_freq_table[] = {
{ 28800000, 56448000, 49, 25, 0, 1},
{ 28800000, 73728000, 64, 25, 0, 1},
{ 28800000, 24000000, 5, 6, 0, 1},
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_d_freq_table[] = {
{ 12000000, 216000000, 216, 12, 0, 4},
{ 13000000, 216000000, 216, 13, 0, 4},
{ 19200000, 216000000, 135, 12, 0, 3},
{ 26000000, 216000000, 216, 26, 0, 4},
{ 12000000, 594000000, 594, 12, 0, 8},
{ 13000000, 594000000, 594, 13, 0, 8},
{ 19200000, 594000000, 495, 16, 0, 8},
{ 26000000, 594000000, 594, 26, 0, 8},
{ 12000000, 1000000000, 1000, 12, 0, 12},
{ 13000000, 1000000000, 1000, 13, 0, 12},
{ 19200000, 1000000000, 625, 12, 0, 8},
{ 26000000, 1000000000, 1000, 26, 0, 12},
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_u_freq_table[] = {
{ 12000000, 480000000, 960, 12, 0, 0},
{ 13000000, 480000000, 960, 13, 0, 0},
{ 19200000, 480000000, 200, 4, 0, 0},
{ 26000000, 480000000, 960, 26, 0, 0},
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_x_freq_table[] = {
/* 1 GHz */
{ 12000000, 1000000000, 1000, 12, 0, 12},
{ 13000000, 1000000000, 1000, 13, 0, 12},
{ 19200000, 1000000000, 625, 12, 0, 8},
{ 26000000, 1000000000, 1000, 26, 0, 12},
/* 912 MHz */
{ 12000000, 912000000, 912, 12, 0, 12},
{ 13000000, 912000000, 912, 13, 0, 12},
{ 19200000, 912000000, 760, 16, 0, 8},
{ 26000000, 912000000, 912, 26, 0, 12},
/* 816 MHz */
{ 12000000, 816000000, 816, 12, 0, 12},
{ 13000000, 816000000, 816, 13, 0, 12},
{ 19200000, 816000000, 680, 16, 0, 8},
{ 26000000, 816000000, 816, 26, 0, 12},
/* 760 MHz */
{ 12000000, 760000000, 760, 12, 0, 12},
{ 13000000, 760000000, 760, 13, 0, 12},
{ 19200000, 760000000, 950, 24, 0, 8},
{ 26000000, 760000000, 760, 26, 0, 12},
/* 750 MHz */
{ 12000000, 750000000, 750, 12, 0, 12},
{ 13000000, 750000000, 750, 13, 0, 12},
{ 19200000, 750000000, 625, 16, 0, 8},
{ 26000000, 750000000, 750, 26, 0, 12},
/* 608 MHz */
{ 12000000, 608000000, 608, 12, 0, 12},
{ 13000000, 608000000, 608, 13, 0, 12},
{ 19200000, 608000000, 380, 12, 0, 8},
{ 26000000, 608000000, 608, 26, 0, 12},
/* 456 MHz */
{ 12000000, 456000000, 456, 12, 0, 12},
{ 13000000, 456000000, 456, 13, 0, 12},
{ 19200000, 456000000, 380, 16, 0, 8},
{ 26000000, 456000000, 456, 26, 0, 12},
/* 312 MHz */
{ 12000000, 312000000, 312, 12, 0, 12},
{ 13000000, 312000000, 312, 13, 0, 12},
{ 19200000, 312000000, 260, 16, 0, 8},
{ 26000000, 312000000, 312, 26, 0, 12},
{ 0, 0, 0, 0, 0, 0 },
};
static struct tegra_clk_pll_freq_table pll_e_freq_table[] = {
{ 12000000, 100000000, 200, 24, 0, 0 },
{ 0, 0, 0, 0, 0, 0 },
};
/* PLL parameters */
static struct tegra_clk_pll_params pll_c_params = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.base_reg = PLLC_BASE,
.misc_reg = PLLC_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
};
static struct tegra_clk_pll_params pll_m_params = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1200000000,
.base_reg = PLLM_BASE,
.misc_reg = PLLM_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
};
static struct tegra_clk_pll_params pll_p_params = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.base_reg = PLLP_BASE,
.misc_reg = PLLP_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
};
static struct tegra_clk_pll_params pll_a_params = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.base_reg = PLLA_BASE,
.misc_reg = PLLA_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
};
static struct tegra_clk_pll_params pll_d_params = {
.input_min = 2000000,
.input_max = 40000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 40000000,
.vco_max = 1000000000,
.base_reg = PLLD_BASE,
.misc_reg = PLLD_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
.lock_delay = 1000,
};
static struct pdiv_map pllu_p[] = {
{ .pdiv = 1, .hw_val = 1 },
{ .pdiv = 2, .hw_val = 0 },
{ .pdiv = 0, .hw_val = 0 },
};
static struct tegra_clk_pll_params pll_u_params = {
.input_min = 2000000,
.input_max = 40000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 48000000,
.vco_max = 960000000,
.base_reg = PLLU_BASE,
.misc_reg = PLLU_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
.lock_delay = 1000,
.pdiv_tohw = pllu_p,
};
static struct tegra_clk_pll_params pll_x_params = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1200000000,
.base_reg = PLLX_BASE,
.misc_reg = PLLX_MISC,
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
};
static struct tegra_clk_pll_params pll_e_params = {
.input_min = 12000000,
.input_max = 12000000,
.cf_min = 0,
.cf_max = 0,
.vco_min = 0,
.vco_max = 0,
.base_reg = PLLE_BASE,
.misc_reg = PLLE_MISC,
.lock_mask = PLLE_MISC_LOCK,
.lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE,
.lock_delay = 0,
};
/* Peripheral clock registers */
static struct tegra_clk_periph_regs periph_l_regs = {
.enb_reg = CLK_OUT_ENB_L,
.enb_set_reg = CLK_OUT_ENB_SET_L,
.enb_clr_reg = CLK_OUT_ENB_CLR_L,
.rst_reg = RST_DEVICES_L,
.rst_set_reg = RST_DEVICES_SET_L,
.rst_clr_reg = RST_DEVICES_CLR_L,
};
static struct tegra_clk_periph_regs periph_h_regs = {
.enb_reg = CLK_OUT_ENB_H,
.enb_set_reg = CLK_OUT_ENB_SET_H,
.enb_clr_reg = CLK_OUT_ENB_CLR_H,
.rst_reg = RST_DEVICES_H,
.rst_set_reg = RST_DEVICES_SET_H,
.rst_clr_reg = RST_DEVICES_CLR_H,
};
static struct tegra_clk_periph_regs periph_u_regs = {
.enb_reg = CLK_OUT_ENB_U,
.enb_set_reg = CLK_OUT_ENB_SET_U,
.enb_clr_reg = CLK_OUT_ENB_CLR_U,
.rst_reg = RST_DEVICES_U,
.rst_set_reg = RST_DEVICES_SET_U,
.rst_clr_reg = RST_DEVICES_CLR_U,
};
static unsigned long tegra20_clk_measure_input_freq(void)
{
u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL);
u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK;
u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK;
unsigned long input_freq;
switch (auto_clk_control) {
case OSC_CTRL_OSC_FREQ_12MHZ:
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
input_freq = 12000000;
break;
case OSC_CTRL_OSC_FREQ_13MHZ:
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
input_freq = 13000000;
break;
case OSC_CTRL_OSC_FREQ_19_2MHZ:
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
input_freq = 19200000;
break;
case OSC_CTRL_OSC_FREQ_26MHZ:
BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
input_freq = 26000000;
break;
default:
pr_err("Unexpected clock autodetect value %d",
auto_clk_control);
BUG();
return 0;
}
return input_freq;
}
static unsigned int tegra20_get_pll_ref_div(void)
{
u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) &
OSC_CTRL_PLL_REF_DIV_MASK;
switch (pll_ref_div) {
case OSC_CTRL_PLL_REF_DIV_1:
return 1;
case OSC_CTRL_PLL_REF_DIV_2:
return 2;
case OSC_CTRL_PLL_REF_DIV_4:
return 4;
default:
pr_err("Invalied pll ref divider %d\n", pll_ref_div);
BUG();
}
return 0;
}
static void tegra20_pll_init(void)
{
struct clk *clk;
/* PLLC */
clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0,
0, &pll_c_params, TEGRA_PLL_HAS_CPCON,
pll_c_freq_table, NULL);
clk_register_clkdev(clk, "pll_c", NULL);
clks[pll_c] = clk;
/* PLLC_OUT1 */
clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c",
clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
8, 8, 1, NULL);
clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div",
clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT,
0, NULL);
clk_register_clkdev(clk, "pll_c_out1", NULL);
clks[pll_c_out1] = clk;
/* PLLP */
clk = tegra_clk_register_pll("pll_p", "pll_ref", clk_base, NULL, 0,
216000000, &pll_p_params, TEGRA_PLL_FIXED |
TEGRA_PLL_HAS_CPCON, pll_p_freq_table, NULL);
clk_register_clkdev(clk, "pll_p", NULL);
clks[pll_p] = clk;
/* PLLP_OUT1 */
clk = tegra_clk_register_divider("pll_p_out1_div", "pll_p",
clk_base + PLLP_OUTA, 0,
TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP,
8, 8, 1, &pll_div_lock);
clk = tegra_clk_register_pll_out("pll_p_out1", "pll_p_out1_div",
clk_base + PLLP_OUTA, 1, 0,
CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0,
&pll_div_lock);
clk_register_clkdev(clk, "pll_p_out1", NULL);
clks[pll_p_out1] = clk;
/* PLLP_OUT2 */
clk = tegra_clk_register_divider("pll_p_out2_div", "pll_p",
clk_base + PLLP_OUTA, 0,
TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP,
24, 8, 1, &pll_div_lock);
clk = tegra_clk_register_pll_out("pll_p_out2", "pll_p_out2_div",
clk_base + PLLP_OUTA, 17, 16,
CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0,
&pll_div_lock);
clk_register_clkdev(clk, "pll_p_out2", NULL);
clks[pll_p_out2] = clk;
/* PLLP_OUT3 */
clk = tegra_clk_register_divider("pll_p_out3_div", "pll_p",
clk_base + PLLP_OUTB, 0,
TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP,
8, 8, 1, &pll_div_lock);
clk = tegra_clk_register_pll_out("pll_p_out3", "pll_p_out3_div",
clk_base + PLLP_OUTB, 1, 0,
CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0,
&pll_div_lock);
clk_register_clkdev(clk, "pll_p_out3", NULL);
clks[pll_p_out3] = clk;
/* PLLP_OUT4 */
clk = tegra_clk_register_divider("pll_p_out4_div", "pll_p",
clk_base + PLLP_OUTB, 0,
TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP,
24, 8, 1, &pll_div_lock);
clk = tegra_clk_register_pll_out("pll_p_out4", "pll_p_out4_div",
clk_base + PLLP_OUTB, 17, 16,
CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0,
&pll_div_lock);
clk_register_clkdev(clk, "pll_p_out4", NULL);
clks[pll_p_out4] = clk;
/* PLLM */
clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL,
CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE, 0,
&pll_m_params, TEGRA_PLL_HAS_CPCON,
pll_m_freq_table, NULL);
clk_register_clkdev(clk, "pll_m", NULL);
clks[pll_m] = clk;
/* PLLM_OUT1 */
clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m",
clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
8, 8, 1, NULL);
clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div",
clk_base + PLLM_OUT, 1, 0, CLK_IGNORE_UNUSED |
CLK_SET_RATE_PARENT, 0, NULL);
clk_register_clkdev(clk, "pll_m_out1", NULL);
clks[pll_m_out1] = clk;
/* PLLX */
clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0,
0, &pll_x_params, TEGRA_PLL_HAS_CPCON,
pll_x_freq_table, NULL);
clk_register_clkdev(clk, "pll_x", NULL);
clks[pll_x] = clk;
/* PLLU */
clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0,
0, &pll_u_params, TEGRA_PLLU | TEGRA_PLL_HAS_CPCON,
pll_u_freq_table, NULL);
clk_register_clkdev(clk, "pll_u", NULL);
clks[pll_u] = clk;
/* PLLD */
clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0,
0, &pll_d_params, TEGRA_PLL_HAS_CPCON,
pll_d_freq_table, NULL);
clk_register_clkdev(clk, "pll_d", NULL);
clks[pll_d] = clk;
/* PLLD_OUT0 */
clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d",
CLK_SET_RATE_PARENT, 1, 2);
clk_register_clkdev(clk, "pll_d_out0", NULL);
clks[pll_d_out0] = clk;
/* PLLA */
clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0,
0, &pll_a_params, TEGRA_PLL_HAS_CPCON,
pll_a_freq_table, NULL);
clk_register_clkdev(clk, "pll_a", NULL);
clks[pll_a] = clk;
/* PLLA_OUT0 */
clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a",
clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
8, 8, 1, NULL);
clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div",
clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED |
CLK_SET_RATE_PARENT, 0, NULL);
clk_register_clkdev(clk, "pll_a_out0", NULL);
clks[pll_a_out0] = clk;
/* PLLE */
clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base,
0, 100000000, &pll_e_params,
0, pll_e_freq_table, NULL);
clk_register_clkdev(clk, "pll_e", NULL);
clks[pll_e] = clk;
}
static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
"pll_p", "pll_p_out4",
"pll_p_out3", "clk_d", "pll_x" };
static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
"pll_p_out3", "pll_p_out2", "clk_d",
"clk_32k", "pll_m_out1" };
static void tegra20_super_clk_init(void)
{
struct clk *clk;
/* CCLK */
clk = tegra_clk_register_super_mux("cclk", cclk_parents,
ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT,
clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
clk_register_clkdev(clk, "cclk", NULL);
clks[cclk] = clk;
/* SCLK */
clk = tegra_clk_register_super_mux("sclk", sclk_parents,
ARRAY_SIZE(sclk_parents), CLK_SET_RATE_PARENT,
clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
clk_register_clkdev(clk, "sclk", NULL);
clks[sclk] = clk;
/* HCLK */
clk = clk_register_divider(NULL, "hclk_div", "sclk", 0,
clk_base + CLK_SYSTEM_RATE, 4, 2, 0,
&sysrate_lock);
clk = clk_register_gate(NULL, "hclk", "hclk_div", CLK_SET_RATE_PARENT,
clk_base + CLK_SYSTEM_RATE, 7,
CLK_GATE_SET_TO_DISABLE, &sysrate_lock);
clk_register_clkdev(clk, "hclk", NULL);
clks[hclk] = clk;
/* PCLK */
clk = clk_register_divider(NULL, "pclk_div", "hclk", 0,
clk_base + CLK_SYSTEM_RATE, 0, 2, 0,
&sysrate_lock);
clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT,
clk_base + CLK_SYSTEM_RATE, 3,
CLK_GATE_SET_TO_DISABLE, &sysrate_lock);
clk_register_clkdev(clk, "pclk", NULL);
clks[pclk] = clk;
/* twd */
clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4);
clk_register_clkdev(clk, "twd", NULL);
clks[twd] = clk;
}
static const char *audio_parents[] = {"spdif_in", "i2s1", "i2s2", "unused",
"pll_a_out0", "unused", "unused",
"unused"};
static void __init tegra20_audio_clk_init(void)
{
struct clk *clk;
/* audio */
clk = clk_register_mux(NULL, "audio_mux", audio_parents,
ARRAY_SIZE(audio_parents), 0,
clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL);
clk = clk_register_gate(NULL, "audio", "audio_mux", 0,
clk_base + AUDIO_SYNC_CLK, 4,
CLK_GATE_SET_TO_DISABLE, NULL);
clk_register_clkdev(clk, "audio", NULL);
clks[audio] = clk;
/* audio_2x */
clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio",
CLK_SET_RATE_PARENT, 2, 1);
clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler",
TEGRA_PERIPH_NO_RESET, clk_base,
CLK_SET_RATE_PARENT, 89, &periph_u_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "audio_2x", NULL);
clks[audio_2x] = clk;
}
static const char *i2s1_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
"clk_m"};
static const char *i2s2_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
"clk_m"};
static const char *spdif_out_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
"clk_m"};
static const char *spdif_in_parents[] = {"pll_p", "pll_c", "pll_m"};
static const char *pwm_parents[] = {"pll_p", "pll_c", "audio", "clk_m",
"clk_32k"};
static const char *mux_pllpcm_clkm[] = {"pll_p", "pll_c", "pll_m", "clk_m"};
static const char *mux_pllmcpa[] = {"pll_m", "pll_c", "pll_c", "pll_a"};
static const char *mux_pllpdc_clkm[] = {"pll_p", "pll_d_out0", "pll_c",
"clk_m"};
static const char *mux_pllmcp_clkm[] = {"pll_m", "pll_c", "pll_p", "clk_m"};
static struct tegra_periph_init_data tegra_periph_clk_list[] = {
TEGRA_INIT_DATA_MUX("i2s1", NULL, "tegra20-i2s.0", i2s1_parents, CLK_SOURCE_I2S1, 11, &periph_l_regs, TEGRA_PERIPH_ON_APB, i2s1),
TEGRA_INIT_DATA_MUX("i2s2", NULL, "tegra20-i2s.1", i2s2_parents, CLK_SOURCE_I2S2, 18, &periph_l_regs, TEGRA_PERIPH_ON_APB, i2s2),
TEGRA_INIT_DATA_MUX("spdif_out", "spdif_out", "tegra20-spdif", spdif_out_parents, CLK_SOURCE_SPDIF_OUT, 10, &periph_l_regs, TEGRA_PERIPH_ON_APB, spdif_out),
TEGRA_INIT_DATA_MUX("spdif_in", "spdif_in", "tegra20-spdif", spdif_in_parents, CLK_SOURCE_SPDIF_IN, 10, &periph_l_regs, TEGRA_PERIPH_ON_APB, spdif_in),
TEGRA_INIT_DATA_MUX("sbc1", NULL, "spi_tegra.0", mux_pllpcm_clkm, CLK_SOURCE_SBC1, 41, &periph_h_regs, TEGRA_PERIPH_ON_APB, sbc1),
TEGRA_INIT_DATA_MUX("sbc2", NULL, "spi_tegra.1", mux_pllpcm_clkm, CLK_SOURCE_SBC2, 44, &periph_h_regs, TEGRA_PERIPH_ON_APB, sbc2),
TEGRA_INIT_DATA_MUX("sbc3", NULL, "spi_tegra.2", mux_pllpcm_clkm, CLK_SOURCE_SBC3, 46, &periph_h_regs, TEGRA_PERIPH_ON_APB, sbc3),
TEGRA_INIT_DATA_MUX("sbc4", NULL, "spi_tegra.3", mux_pllpcm_clkm, CLK_SOURCE_SBC4, 68, &periph_u_regs, TEGRA_PERIPH_ON_APB, sbc4),
TEGRA_INIT_DATA_MUX("spi", NULL, "spi", mux_pllpcm_clkm, CLK_SOURCE_SPI, 43, &periph_h_regs, TEGRA_PERIPH_ON_APB, spi),
TEGRA_INIT_DATA_MUX("xio", NULL, "xio", mux_pllpcm_clkm, CLK_SOURCE_XIO, 45, &periph_h_regs, 0, xio),
TEGRA_INIT_DATA_MUX("twc", NULL, "twc", mux_pllpcm_clkm, CLK_SOURCE_TWC, 16, &periph_l_regs, TEGRA_PERIPH_ON_APB, twc),
TEGRA_INIT_DATA_MUX("ide", NULL, "ide", mux_pllpcm_clkm, CLK_SOURCE_XIO, 25, &periph_l_regs, 0, ide),
TEGRA_INIT_DATA_MUX("ndflash", NULL, "tegra_nand", mux_pllpcm_clkm, CLK_SOURCE_NDFLASH, 13, &periph_l_regs, 0, ndflash),
TEGRA_INIT_DATA_MUX("vfir", NULL, "vfir", mux_pllpcm_clkm, CLK_SOURCE_VFIR, 7, &periph_l_regs, TEGRA_PERIPH_ON_APB, vfir),
TEGRA_INIT_DATA_MUX("csite", NULL, "csite", mux_pllpcm_clkm, CLK_SOURCE_CSITE, 73, &periph_u_regs, 0, csite),
TEGRA_INIT_DATA_MUX("la", NULL, "la", mux_pllpcm_clkm, CLK_SOURCE_LA, 76, &periph_u_regs, 0, la),
TEGRA_INIT_DATA_MUX("owr", NULL, "tegra_w1", mux_pllpcm_clkm, CLK_SOURCE_OWR, 71, &periph_u_regs, TEGRA_PERIPH_ON_APB, owr),
TEGRA_INIT_DATA_MUX("mipi", NULL, "mipi", mux_pllpcm_clkm, CLK_SOURCE_MIPI, 50, &periph_h_regs, TEGRA_PERIPH_ON_APB, mipi),
TEGRA_INIT_DATA_MUX("vde", NULL, "vde", mux_pllpcm_clkm, CLK_SOURCE_VDE, 61, &periph_h_regs, 0, vde),
TEGRA_INIT_DATA_MUX("vi", "vi", "tegra_camera", mux_pllmcpa, CLK_SOURCE_VI, 20, &periph_l_regs, 0, vi),
TEGRA_INIT_DATA_MUX("epp", NULL, "epp", mux_pllmcpa, CLK_SOURCE_EPP, 19, &periph_l_regs, 0, epp),
TEGRA_INIT_DATA_MUX("mpe", NULL, "mpe", mux_pllmcpa, CLK_SOURCE_MPE, 60, &periph_h_regs, 0, mpe),
TEGRA_INIT_DATA_MUX("host1x", NULL, "host1x", mux_pllmcpa, CLK_SOURCE_HOST1X, 28, &periph_l_regs, 0, host1x),
TEGRA_INIT_DATA_MUX("3d", NULL, "3d", mux_pllmcpa, CLK_SOURCE_3D, 24, &periph_l_regs, TEGRA_PERIPH_MANUAL_RESET, gr3d),
TEGRA_INIT_DATA_MUX("2d", NULL, "2d", mux_pllmcpa, CLK_SOURCE_2D, 21, &periph_l_regs, 0, gr2d),
TEGRA_INIT_DATA_MUX("nor", NULL, "tegra-nor", mux_pllpcm_clkm, CLK_SOURCE_NOR, 42, &periph_h_regs, 0, nor),
TEGRA_INIT_DATA_MUX("sdmmc1", NULL, "sdhci-tegra.0", mux_pllpcm_clkm, CLK_SOURCE_SDMMC1, 14, &periph_l_regs, 0, sdmmc1),
TEGRA_INIT_DATA_MUX("sdmmc2", NULL, "sdhci-tegra.1", mux_pllpcm_clkm, CLK_SOURCE_SDMMC2, 9, &periph_l_regs, 0, sdmmc2),
TEGRA_INIT_DATA_MUX("sdmmc3", NULL, "sdhci-tegra.2", mux_pllpcm_clkm, CLK_SOURCE_SDMMC3, 69, &periph_u_regs, 0, sdmmc3),
TEGRA_INIT_DATA_MUX("sdmmc4", NULL, "sdhci-tegra.3", mux_pllpcm_clkm, CLK_SOURCE_SDMMC4, 15, &periph_l_regs, 0, sdmmc4),
TEGRA_INIT_DATA_MUX("cve", NULL, "cve", mux_pllpdc_clkm, CLK_SOURCE_CVE, 49, &periph_h_regs, 0, cve),
TEGRA_INIT_DATA_MUX("tvo", NULL, "tvo", mux_pllpdc_clkm, CLK_SOURCE_TVO, 49, &periph_h_regs, 0, tvo),
TEGRA_INIT_DATA_MUX("tvdac", NULL, "tvdac", mux_pllpdc_clkm, CLK_SOURCE_TVDAC, 53, &periph_h_regs, 0, tvdac),
TEGRA_INIT_DATA_MUX("vi_sensor", "vi_sensor", "tegra_camera", mux_pllmcpa, CLK_SOURCE_VI_SENSOR, 20, &periph_l_regs, TEGRA_PERIPH_NO_RESET, vi_sensor),
TEGRA_INIT_DATA_DIV16("i2c1", "div-clk", "tegra-i2c.0", mux_pllpcm_clkm, CLK_SOURCE_I2C1, 12, &periph_l_regs, TEGRA_PERIPH_ON_APB, i2c1),
TEGRA_INIT_DATA_DIV16("i2c2", "div-clk", "tegra-i2c.1", mux_pllpcm_clkm, CLK_SOURCE_I2C2, 54, &periph_h_regs, TEGRA_PERIPH_ON_APB, i2c2),
TEGRA_INIT_DATA_DIV16("i2c3", "div-clk", "tegra-i2c.2", mux_pllpcm_clkm, CLK_SOURCE_I2C3, 67, &periph_u_regs, TEGRA_PERIPH_ON_APB, i2c3),
TEGRA_INIT_DATA_DIV16("dvc", "div-clk", "tegra-i2c.3", mux_pllpcm_clkm, CLK_SOURCE_DVC, 47, &periph_h_regs, TEGRA_PERIPH_ON_APB, dvc),
TEGRA_INIT_DATA_MUX("hdmi", NULL, "hdmi", mux_pllpdc_clkm, CLK_SOURCE_HDMI, 51, &periph_h_regs, 0, hdmi),
TEGRA_INIT_DATA("pwm", NULL, "tegra-pwm", pwm_parents, CLK_SOURCE_PWM, 28, 3, 0, 0, 8, 1, 0, &periph_l_regs, 17, periph_clk_enb_refcnt, TEGRA_PERIPH_ON_APB, pwm),
};
static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = {
TEGRA_INIT_DATA_NODIV("uarta", NULL, "tegra_uart.0", mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6, &periph_l_regs, TEGRA_PERIPH_ON_APB, uarta),
TEGRA_INIT_DATA_NODIV("uartb", NULL, "tegra_uart.1", mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7, &periph_l_regs, TEGRA_PERIPH_ON_APB, uartb),
TEGRA_INIT_DATA_NODIV("uartc", NULL, "tegra_uart.2", mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55, &periph_h_regs, TEGRA_PERIPH_ON_APB, uartc),
TEGRA_INIT_DATA_NODIV("uartd", NULL, "tegra_uart.3", mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65, &periph_u_regs, TEGRA_PERIPH_ON_APB, uartd),
TEGRA_INIT_DATA_NODIV("uarte", NULL, "tegra_uart.4", mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66, &periph_u_regs, TEGRA_PERIPH_ON_APB, uarte),
TEGRA_INIT_DATA_NODIV("disp1", NULL, "tegradc.0", mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27, &periph_l_regs, 0, disp1),
TEGRA_INIT_DATA_NODIV("disp2", NULL, "tegradc.1", mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26, &periph_l_regs, 0, disp2),
};
static void __init tegra20_periph_clk_init(void)
{
struct tegra_periph_init_data *data;
struct clk *clk;
int i;
/* ac97 */
clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0",
TEGRA_PERIPH_ON_APB,
clk_base, 0, 3, &periph_l_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "tegra20-ac97");
clks[ac97] = clk;
/* apbdma */
clk = tegra_clk_register_periph_gate("apbdma", "pclk", 0, clk_base,
0, 34, &periph_h_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "tegra-apbdma");
clks[apbdma] = clk;
/* rtc */
clk = tegra_clk_register_periph_gate("rtc", "clk_32k",
TEGRA_PERIPH_NO_RESET,
clk_base, 0, 4, &periph_l_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "rtc-tegra");
clks[rtc] = clk;
/* timer */
clk = tegra_clk_register_periph_gate("timer", "clk_m", 0, clk_base,
0, 5, &periph_l_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "timer");
clks[timer] = clk;
/* kbc */
clk = tegra_clk_register_periph_gate("kbc", "clk_32k",
TEGRA_PERIPH_NO_RESET | TEGRA_PERIPH_ON_APB,
clk_base, 0, 36, &periph_h_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "tegra-kbc");
clks[kbc] = clk;
/* csus */
clk = tegra_clk_register_periph_gate("csus", "clk_m",
TEGRA_PERIPH_NO_RESET,
clk_base, 0, 92, &periph_u_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "csus", "tengra_camera");
clks[csus] = clk;
/* vcp */
clk = tegra_clk_register_periph_gate("vcp", "clk_m", 0,
clk_base, 0, 29, &periph_l_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "vcp", "tegra-avp");
clks[vcp] = clk;
/* bsea */
clk = tegra_clk_register_periph_gate("bsea", "clk_m", 0,
clk_base, 0, 62, &periph_h_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "bsea", "tegra-avp");
clks[bsea] = clk;
/* bsev */
clk = tegra_clk_register_periph_gate("bsev", "clk_m", 0,
clk_base, 0, 63, &periph_h_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "bsev", "tegra-aes");
clks[bsev] = clk;
/* emc */
clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
ARRAY_SIZE(mux_pllmcp_clkm), 0,
clk_base + CLK_SOURCE_EMC,
30, 2, 0, NULL);
clk = tegra_clk_register_periph_gate("emc", "emc_mux", 0, clk_base, 0,
57, &periph_h_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, "emc", NULL);
clks[emc] = clk;
/* usbd */
clk = tegra_clk_register_periph_gate("usbd", "clk_m", 0, clk_base, 0,
22, &periph_l_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "fsl-tegra-udc");
clks[usbd] = clk;
/* usb2 */
clk = tegra_clk_register_periph_gate("usb2", "clk_m", 0, clk_base, 0,
58, &periph_h_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "tegra-ehci.1");
clks[usb2] = clk;
/* usb3 */
clk = tegra_clk_register_periph_gate("usb3", "clk_m", 0, clk_base, 0,
59, &periph_h_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "tegra-ehci.2");
clks[usb3] = clk;
/* dsi */
clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0,
48, &periph_h_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, NULL, "dsi");
clks[dsi] = clk;
/* csi */
clk = tegra_clk_register_periph_gate("csi", "pll_p_out3", 0, clk_base,
0, 52, &periph_h_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "csi", "tegra_camera");
clks[csi] = clk;
/* isp */
clk = tegra_clk_register_periph_gate("isp", "clk_m", 0, clk_base, 0, 23,
&periph_l_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, "isp", "tegra_camera");
clks[isp] = clk;
/* pex */
clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70,
&periph_u_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, "pex", NULL);
clks[pex] = clk;
/* afi */
clk = tegra_clk_register_periph_gate("afi", "clk_m", 0, clk_base, 0, 72,
&periph_u_regs, periph_clk_enb_refcnt);
clk_register_clkdev(clk, "afi", NULL);
clks[afi] = clk;
/* pcie_xclk */
clk = tegra_clk_register_periph_gate("pcie_xclk", "clk_m", 0, clk_base,
0, 74, &periph_u_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "pcie_xclk", NULL);
clks[pcie_xclk] = clk;
/* cdev1 */
clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, CLK_IS_ROOT,
26000000);
clk = tegra_clk_register_periph_gate("cdev1", "cdev1_fixed", 0,
clk_base, 0, 94, &periph_u_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "cdev1", NULL);
clks[cdev1] = clk;
/* cdev2 */
clk = clk_register_fixed_rate(NULL, "cdev2_fixed", NULL, CLK_IS_ROOT,
26000000);
clk = tegra_clk_register_periph_gate("cdev2", "cdev2_fixed", 0,
clk_base, 0, 93, &periph_u_regs,
periph_clk_enb_refcnt);
clk_register_clkdev(clk, "cdev2", NULL);
clks[cdev2] = clk;
for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) {
data = &tegra_periph_clk_list[i];
clk = tegra_clk_register_periph(data->name, data->parent_names,
data->num_parents, &data->periph,
clk_base, data->offset, data->flags);
clk_register_clkdev(clk, data->con_id, data->dev_id);
clks[data->clk_id] = clk;
}
for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) {
data = &tegra_periph_nodiv_clk_list[i];
clk = tegra_clk_register_periph_nodiv(data->name,
data->parent_names,
data->num_parents, &data->periph,
clk_base, data->offset);
clk_register_clkdev(clk, data->con_id, data->dev_id);
clks[data->clk_id] = clk;
}
}
static void __init tegra20_fixed_clk_init(void)
{
struct clk *clk;
/* clk_32k */
clk = clk_register_fixed_rate(NULL, "clk_32k", NULL, CLK_IS_ROOT,
32768);
clk_register_clkdev(clk, "clk_32k", NULL);
clks[clk_32k] = clk;
}
static void __init tegra20_pmc_clk_init(void)
{
struct clk *clk;
/* blink */
writel_relaxed(0, pmc_base + PMC_BLINK_TIMER);
clk = clk_register_gate(NULL, "blink_override", "clk_32k", 0,
pmc_base + PMC_DPD_PADS_ORIDE,
PMC_DPD_PADS_ORIDE_BLINK_ENB, 0, NULL);
clk = clk_register_gate(NULL, "blink", "blink_override", 0,
pmc_base + PMC_CTRL,
PMC_CTRL_BLINK_ENB, 0, NULL);
clk_register_clkdev(clk, "blink", NULL);
clks[blink] = clk;
}
static void __init tegra20_osc_clk_init(void)
{
struct clk *clk;
unsigned long input_freq;
unsigned int pll_ref_div;
input_freq = tegra20_clk_measure_input_freq();
/* clk_m */
clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IS_ROOT |
CLK_IGNORE_UNUSED, input_freq);
clk_register_clkdev(clk, "clk_m", NULL);
clks[clk_m] = clk;
/* pll_ref */
pll_ref_div = tegra20_get_pll_ref_div();
clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m",
CLK_SET_RATE_PARENT, 1, pll_ref_div);
clk_register_clkdev(clk, "pll_ref", NULL);
clks[pll_ref] = clk;
}
/* Tegra20 CPU clock and reset control functions */
static void tegra20_wait_cpu_in_reset(u32 cpu)
{
unsigned int reg;
do {
reg = readl(clk_base +
TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
cpu_relax();
} while (!(reg & (1 << cpu))); /* check CPU been reset or not */
return;
}
static void tegra20_put_cpu_in_reset(u32 cpu)
{
writel(CPU_RESET(cpu),
clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
dmb();
}
static void tegra20_cpu_out_of_reset(u32 cpu)
{
writel(CPU_RESET(cpu),
clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR);
wmb();
}
static void tegra20_enable_cpu_clock(u32 cpu)
{
unsigned int reg;
reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
writel(reg & ~CPU_CLOCK(cpu),
clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
barrier();
reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
}
static void tegra20_disable_cpu_clock(u32 cpu)
{
unsigned int reg;
reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
writel(reg | CPU_CLOCK(cpu),
clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
}
#ifdef CONFIG_PM_SLEEP
static bool tegra20_cpu_rail_off_ready(void)
{
unsigned int cpu_rst_status;
cpu_rst_status = readl(clk_base +
TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
return !!(cpu_rst_status & 0x2);
}
static void tegra20_cpu_clock_suspend(void)
{
/* switch coresite to clk_m, save off original source */
tegra20_cpu_clk_sctx.clk_csite_src =
readl(clk_base + CLK_SOURCE_CSITE);
writel(3<<30, clk_base + CLK_SOURCE_CSITE);
tegra20_cpu_clk_sctx.cpu_burst =
readl(clk_base + CCLK_BURST_POLICY);
tegra20_cpu_clk_sctx.pllx_base =
readl(clk_base + PLLX_BASE);
tegra20_cpu_clk_sctx.pllx_misc =
readl(clk_base + PLLX_MISC);
tegra20_cpu_clk_sctx.cclk_divider =
readl(clk_base + SUPER_CCLK_DIVIDER);
}
static void tegra20_cpu_clock_resume(void)
{
unsigned int reg, policy;
/* Is CPU complex already running on PLLX? */
reg = readl(clk_base + CCLK_BURST_POLICY);
policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF;
if (policy == CCLK_IDLE_POLICY)
reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF;
else if (policy == CCLK_RUN_POLICY)
reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF;
else
BUG();
if (reg != CCLK_BURST_POLICY_PLLX) {
/* restore PLLX settings if CPU is on different PLL */
writel(tegra20_cpu_clk_sctx.pllx_misc,
clk_base + PLLX_MISC);
writel(tegra20_cpu_clk_sctx.pllx_base,
clk_base + PLLX_BASE);
/* wait for PLL stabilization if PLLX was enabled */
if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30))
udelay(300);
}
/*
* Restore original burst policy setting for calls resulting from CPU
* LP2 in idle or system suspend.
*/
writel(tegra20_cpu_clk_sctx.cclk_divider,
clk_base + SUPER_CCLK_DIVIDER);
writel(tegra20_cpu_clk_sctx.cpu_burst,
clk_base + CCLK_BURST_POLICY);
writel(tegra20_cpu_clk_sctx.clk_csite_src,
clk_base + CLK_SOURCE_CSITE);
}
#endif
static struct tegra_cpu_car_ops tegra20_cpu_car_ops = {
.wait_for_reset = tegra20_wait_cpu_in_reset,
.put_in_reset = tegra20_put_cpu_in_reset,
.out_of_reset = tegra20_cpu_out_of_reset,
.enable_clock = tegra20_enable_cpu_clock,
.disable_clock = tegra20_disable_cpu_clock,
#ifdef CONFIG_PM_SLEEP
.rail_off_ready = tegra20_cpu_rail_off_ready,
.suspend = tegra20_cpu_clock_suspend,
.resume = tegra20_cpu_clock_resume,
#endif
};
static __initdata struct tegra_clk_init_table init_table[] = {
{pll_p, clk_max, 216000000, 1},
{pll_p_out1, clk_max, 28800000, 1},
{pll_p_out2, clk_max, 48000000, 1},
{pll_p_out3, clk_max, 72000000, 1},
{pll_p_out4, clk_max, 24000000, 1},
{pll_c, clk_max, 600000000, 1},
{pll_c_out1, clk_max, 120000000, 1},
{sclk, pll_c_out1, 0, 1},
{hclk, clk_max, 0, 1},
{pclk, clk_max, 60000000, 1},
{csite, clk_max, 0, 1},
{emc, clk_max, 0, 1},
{cclk, clk_max, 0, 1},
{uarta, pll_p, 0, 0},
{uartb, pll_p, 0, 0},
{uartc, pll_p, 0, 0},
{uartd, pll_p, 0, 0},
{uarte, pll_p, 0, 0},
{pll_a, clk_max, 56448000, 1},
{pll_a_out0, clk_max, 11289600, 1},
{cdev1, clk_max, 0, 1},
{blink, clk_max, 32768, 1},
{i2s1, pll_a_out0, 11289600, 0},
{i2s2, pll_a_out0, 11289600, 0},
{sdmmc1, pll_p, 48000000, 0},
{sdmmc3, pll_p, 48000000, 0},
{sdmmc4, pll_p, 48000000, 0},
{spi, pll_p, 20000000, 0},
{sbc1, pll_p, 100000000, 0},
{sbc2, pll_p, 100000000, 0},
{sbc3, pll_p, 100000000, 0},
{sbc4, pll_p, 100000000, 0},
{host1x, pll_c, 150000000, 0},
{disp1, pll_p, 600000000, 0},
{disp2, pll_p, 600000000, 0},
{gr2d, pll_c, 300000000, 0},
{gr3d, pll_c, 300000000, 0},
{clk_max, clk_max, 0, 0}, /* This MUST be the last entry */
};
static void __init tegra20_clock_apply_init_table(void)
{
tegra_init_from_table(init_table, clks, clk_max);
}
/*
* Some clocks may be used by different drivers depending on the board
* configuration. List those here to register them twice in the clock lookup
* table under two names.
*/
static struct tegra_clk_duplicate tegra_clk_duplicates[] = {
TEGRA_CLK_DUPLICATE(usbd, "utmip-pad", NULL),
TEGRA_CLK_DUPLICATE(usbd, "tegra-ehci.0", NULL),
TEGRA_CLK_DUPLICATE(usbd, "tegra-otg", NULL),
TEGRA_CLK_DUPLICATE(cclk, NULL, "cpu"),
TEGRA_CLK_DUPLICATE(clk_max, NULL, NULL), /* Must be the last entry */
};
static const struct of_device_id pmc_match[] __initconst = {
{ .compatible = "nvidia,tegra20-pmc" },
{},
};
void __init tegra20_clock_init(struct device_node *np)
{
int i;
struct device_node *node;
clk_base = of_iomap(np, 0);
if (!clk_base) {
pr_err("Can't map CAR registers\n");
BUG();
}
node = of_find_matching_node(NULL, pmc_match);
if (!node) {
pr_err("Failed to find pmc node\n");
BUG();
}
pmc_base = of_iomap(node, 0);
if (!pmc_base) {
pr_err("Can't map pmc registers\n");
BUG();
}
tegra20_osc_clk_init();
tegra20_pmc_clk_init();
tegra20_fixed_clk_init();
tegra20_pll_init();
tegra20_super_clk_init();
tegra20_periph_clk_init();
tegra20_audio_clk_init();
for (i = 0; i < ARRAY_SIZE(clks); i++) {
if (IS_ERR(clks[i])) {
pr_err("Tegra20 clk %d: register failed with %ld\n",
i, PTR_ERR(clks[i]));
BUG();
}
if (!clks[i])
clks[i] = ERR_PTR(-EINVAL);
}
tegra_init_dup_clks(tegra_clk_duplicates, clks, clk_max);
clk_data.clks = clks;
clk_data.clk_num = ARRAY_SIZE(clks);
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
tegra_clk_apply_init_table = tegra20_clock_apply_init_table;
tegra_cpu_car_ops = &tegra20_cpu_car_ops;
}