diff options
Diffstat (limited to 'drivers/clk/tegra/clk-tegra20.c')
| -rw-r--r-- | drivers/clk/tegra/clk-tegra20.c | 1349 |
1 files changed, 1349 insertions, 0 deletions
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c new file mode 100644 index 0000000..5d41569 --- /dev/null +++ b/drivers/clk/tegra/clk-tegra20.c @@ -0,0 +1,1349 @@ +/* + * 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 27 +#define PLLE_MISC_LOCK 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); + +#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, cdev1, cdev2, + 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_u, + pll_x, 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, 1, 8 }, + { 13000000, 600000000, 600, 13, 1, 8 }, + { 19200000, 600000000, 500, 16, 1, 6 }, + { 26000000, 600000000, 600, 26, 1, 8 }, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_m_freq_table[] = { + { 12000000, 666000000, 666, 12, 1, 8}, + { 13000000, 666000000, 666, 13, 1, 8}, + { 19200000, 666000000, 555, 16, 1, 8}, + { 26000000, 666000000, 666, 26, 1, 8}, + { 12000000, 600000000, 600, 12, 1, 8}, + { 13000000, 600000000, 600, 13, 1, 8}, + { 19200000, 600000000, 375, 12, 1, 6}, + { 26000000, 600000000, 600, 26, 1, 8}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_p_freq_table[] = { + { 12000000, 216000000, 432, 12, 2, 8}, + { 13000000, 216000000, 432, 13, 2, 8}, + { 19200000, 216000000, 90, 4, 2, 1}, + { 26000000, 216000000, 432, 26, 2, 8}, + { 12000000, 432000000, 432, 12, 1, 8}, + { 13000000, 432000000, 432, 13, 1, 8}, + { 19200000, 432000000, 90, 4, 1, 1}, + { 26000000, 432000000, 432, 26, 1, 8}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_a_freq_table[] = { + { 28800000, 56448000, 49, 25, 1, 1}, + { 28800000, 73728000, 64, 25, 1, 1}, + { 28800000, 24000000, 5, 6, 1, 1}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_d_freq_table[] = { + { 12000000, 216000000, 216, 12, 1, 4}, + { 13000000, 216000000, 216, 13, 1, 4}, + { 19200000, 216000000, 135, 12, 1, 3}, + { 26000000, 216000000, 216, 26, 1, 4}, + + { 12000000, 594000000, 594, 12, 1, 8}, + { 13000000, 594000000, 594, 13, 1, 8}, + { 19200000, 594000000, 495, 16, 1, 8}, + { 26000000, 594000000, 594, 26, 1, 8}, + + { 12000000, 1000000000, 1000, 12, 1, 12}, + { 13000000, 1000000000, 1000, 13, 1, 12}, + { 19200000, 1000000000, 625, 12, 1, 8}, + { 26000000, 1000000000, 1000, 26, 1, 12}, + + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_u_freq_table[] = { + { 12000000, 480000000, 960, 12, 2, 0}, + { 13000000, 480000000, 960, 13, 2, 0}, + { 19200000, 480000000, 200, 4, 2, 0}, + { 26000000, 480000000, 960, 26, 2, 0}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_x_freq_table[] = { + /* 1 GHz */ + { 12000000, 1000000000, 1000, 12, 1, 12}, + { 13000000, 1000000000, 1000, 13, 1, 12}, + { 19200000, 1000000000, 625, 12, 1, 8}, + { 26000000, 1000000000, 1000, 26, 1, 12}, + + /* 912 MHz */ + { 12000000, 912000000, 912, 12, 1, 12}, + { 13000000, 912000000, 912, 13, 1, 12}, + { 19200000, 912000000, 760, 16, 1, 8}, + { 26000000, 912000000, 912, 26, 1, 12}, + + /* 816 MHz */ + { 12000000, 816000000, 816, 12, 1, 12}, + { 13000000, 816000000, 816, 13, 1, 12}, + { 19200000, 816000000, 680, 16, 1, 8}, + { 26000000, 816000000, 816, 26, 1, 12}, + + /* 760 MHz */ + { 12000000, 760000000, 760, 12, 1, 12}, + { 13000000, 760000000, 760, 13, 1, 12}, + { 19200000, 760000000, 950, 24, 1, 8}, + { 26000000, 760000000, 760, 26, 1, 12}, + + /* 750 MHz */ + { 12000000, 750000000, 750, 12, 1, 12}, + { 13000000, 750000000, 750, 13, 1, 12}, + { 19200000, 750000000, 625, 16, 1, 8}, + { 26000000, 750000000, 750, 26, 1, 12}, + + /* 608 MHz */ + { 12000000, 608000000, 608, 12, 1, 12}, + { 13000000, 608000000, 608, 13, 1, 12}, + { 19200000, 608000000, 380, 12, 1, 8}, + { 26000000, 608000000, 608, 26, 1, 12}, + + /* 456 MHz */ + { 12000000, 456000000, 456, 12, 1, 12}, + { 13000000, 456000000, 456, 13, 1, 12}, + { 19200000, 456000000, 380, 16, 1, 8}, + { 26000000, 456000000, 456, 26, 1, 12}, + + /* 312 MHz */ + { 12000000, 312000000, 312, 12, 1, 12}, + { 13000000, 312000000, 312, 13, 1, 12}, + { 19200000, 312000000, 260, 16, 1, 8}, + { 26000000, 312000000, 312, 26, 1, 12}, + + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct tegra_clk_pll_freq_table pll_e_freq_table[] = { + { 12000000, 100000000, 200, 24, 1, 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_bit_idx = 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_bit_idx = 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_bit_idx = 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_bit_idx = 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_bit_idx = PLL_BASE_LOCK, + .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, + .lock_delay = 1000, +}; + +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_bit_idx = PLL_BASE_LOCK, + .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, + .lock_delay = 1000, +}; + +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_bit_idx = 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_bit_idx = 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, NULL, + 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_cclk", "pll_p_out4_cclk", + "pll_p_out3_cclk", "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; + + /* + * DIV_U71 dividers for CCLK, these dividers are used only + * if parent clock is fixed rate. + */ + + /* + * Clock input to cclk divided from pll_p using + * U71 divider of cclk. + */ + clk = tegra_clk_register_divider("pll_p_cclk", "pll_p", + clk_base + SUPER_CCLK_DIVIDER, 0, + TEGRA_DIVIDER_INT, 16, 8, 1, NULL); + clk_register_clkdev(clk, "pll_p_cclk", NULL); + + /* + * Clock input to cclk divided from pll_p_out3 using + * U71 divider of cclk. + */ + clk = tegra_clk_register_divider("pll_p_out3_cclk", "pll_p_out3", + clk_base + SUPER_CCLK_DIVIDER, 0, + TEGRA_DIVIDER_INT, 16, 8, 1, NULL); + clk_register_clkdev(clk, "pll_p_out3_cclk", NULL); + + /* + * Clock input to cclk divided from pll_p_out4 using + * U71 divider of cclk. + */ + clk = tegra_clk_register_divider("pll_p_out4_cclk", "pll_p_out4", + clk_base + SUPER_CCLK_DIVIDER, 0, + TEGRA_DIVIDER_INT, 16, 8, 1, NULL); + clk_register_clkdev(clk, "pll_p_out4_cclk", NULL); + + /* 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, NULL); + clk = clk_register_gate(NULL, "hclk", "hclk_div", CLK_SET_RATE_PARENT, + clk_base + CLK_SYSTEM_RATE, 7, + CLK_GATE_SET_TO_DISABLE, NULL); + 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, NULL); + clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT, + clk_base + CLK_SYSTEM_RATE, 3, + CLK_GATE_SET_TO_DISABLE, NULL); + 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; + + /* 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); + 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, 1}, + {uartd, pll_p, 0, 1}, + {usbd, clk_max, 12000000, 0}, + {usb2, clk_max, 12000000, 0}, + {usb3, clk_max, 12000000, 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}, + {clk_max, clk_max, 0, 0}, /* This MUST be the last entry */ +}; + +/* + * 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(twd, "smp_twd", NULL), + 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_init_from_table(init_table, clks, clk_max); + + tegra_cpu_car_ops = &tegra20_cpu_car_ops; +} |
