| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2014 Google Inc. |
| * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that 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. |
| */ |
| |
| #ifndef __SOC_NVIDIA_TEGRA124_CLOCK_H__ |
| #define __SOC_NVIDIA_TEGRA124_CLOCK_H__ |
| |
| #include <arch/hlt.h> |
| #include <arch/io.h> |
| #include <console/console.h> |
| #include <soc/clk_rst.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| |
| enum { |
| CLK_L_CPU = 0x1 << 0, |
| CLK_L_COP = 0x1 << 1, |
| CLK_L_TRIG_SYS = 0x1 << 2, |
| CLK_L_RTC = 0x1 << 4, |
| CLK_L_TMR = 0x1 << 5, |
| CLK_L_UARTA = 0x1 << 6, |
| CLK_L_UARTB = 0x1 << 7, |
| CLK_L_GPIO = 0x1 << 8, |
| CLK_L_SDMMC2 = 0x1 << 9, |
| CLK_L_SPDIF = 0x1 << 10, |
| CLK_L_I2S1 = 0x1 << 11, |
| CLK_L_I2C1 = 0x1 << 12, |
| CLK_L_NDFLASH = 0x1 << 13, |
| CLK_L_SDMMC1 = 0x1 << 14, |
| CLK_L_SDMMC4 = 0x1 << 15, |
| CLK_L_PWM = 0x1 << 17, |
| CLK_L_I2S2 = 0x1 << 18, |
| CLK_L_EPP = 0x1 << 19, |
| CLK_L_VI = 0x1 << 20, |
| CLK_L_2D = 0x1 << 21, |
| CLK_L_USBD = 0x1 << 22, |
| CLK_L_ISP = 0x1 << 23, |
| CLK_L_3D = 0x1 << 24, |
| CLK_L_DISP2 = 0x1 << 26, |
| CLK_L_DISP1 = 0x1 << 27, |
| CLK_L_HOST1X = 0x1 << 28, |
| CLK_L_VCP = 0x1 << 29, |
| CLK_L_I2S0 = 0x1 << 30, |
| CLK_L_CACHE2 = 0x1 << 31, |
| |
| CLK_H_MEM = 0x1 << 0, |
| CLK_H_AHBDMA = 0x1 << 1, |
| CLK_H_APBDMA = 0x1 << 2, |
| CLK_H_KBC = 0x1 << 4, |
| CLK_H_STAT_MON = 0x1 << 5, |
| CLK_H_PMC = 0x1 << 6, |
| CLK_H_FUSE = 0x1 << 7, |
| CLK_H_KFUSE = 0x1 << 8, |
| CLK_H_SBC1 = 0x1 << 9, |
| CLK_H_SNOR = 0x1 << 10, |
| CLK_H_JTAG2TBC = 0x1 << 11, |
| CLK_H_SBC2 = 0x1 << 12, |
| CLK_H_SBC3 = 0x1 << 14, |
| CLK_H_I2C5 = 0x1 << 15, |
| CLK_H_DSI = 0x1 << 16, |
| CLK_H_HSI = 0x1 << 18, |
| CLK_H_HDMI = 0x1 << 19, |
| CLK_H_CSI = 0x1 << 20, |
| CLK_H_I2C2 = 0x1 << 22, |
| CLK_H_UARTC = 0x1 << 23, |
| CLK_H_MIPI_CAL = 0x1 << 24, |
| CLK_H_EMC = 0x1 << 25, |
| CLK_H_USB2 = 0x1 << 26, |
| CLK_H_USB3 = 0x1 << 27, |
| CLK_H_MPE = 0x1 << 28, |
| CLK_H_VDE = 0x1 << 29, |
| CLK_H_BSEA = 0x1 << 30, |
| CLK_H_BSEV = 0x1 << 31, |
| |
| CLK_U_UARTD = 0x1 << 1, |
| CLK_U_UARTE = 0x1 << 2, |
| CLK_U_I2C3 = 0x1 << 3, |
| CLK_U_SBC4 = 0x1 << 4, |
| CLK_U_SDMMC3 = 0x1 << 5, |
| CLK_U_PCIE = 0x1 << 6, |
| CLK_U_OWR = 0x1 << 7, |
| CLK_U_AFI = 0x1 << 8, |
| CLK_U_CSITE = 0x1 << 9, |
| CLK_U_PCIEXCLK = 0x1 << 10, |
| CLK_U_AVPUCQ = 0x1 << 11, |
| CLK_U_TRACECLKIN = 0x1 << 13, |
| CLK_U_SOC_THERM = 0x1 << 14, |
| CLK_U_DTV = 0x1 << 15, |
| CLK_U_NAND_SPEED = 0x1 << 16, |
| CLK_U_I2C_SLOW = 0x1 << 17, |
| CLK_U_DSIB = 0x1 << 18, |
| CLK_U_TSEC = 0x1 << 19, |
| CLK_U_IRAMA = 0x1 << 20, |
| CLK_U_IRAMB = 0x1 << 21, |
| CLK_U_IRAMC = 0x1 << 22, |
| |
| // Clock reset. |
| CLK_U_EMUCIF = 0x1 << 23, |
| // Clock enable. |
| CLK_U_IRAMD = 0x1 << 23, |
| |
| CLK_U_CRAM2 = 0x2 << 24, |
| CLK_U_XUSB_HOST = 0x1 << 25, |
| CLK_U_MSENC = 0x1 << 27, |
| CLK_U_SUS_OUT = 0x1 << 28, |
| CLK_U_DEV2_OUT = 0x1 << 29, |
| CLK_U_DEV1_OUT = 0x1 << 30, |
| CLK_U_XUSB_DEV = 0x1 << 31, |
| |
| CLK_V_CPUG = 0x1 << 0, |
| CLK_V_CPULP = 0x1 << 1, |
| CLK_V_3D2 = 0x1 << 2, |
| CLK_V_MSELECT = 0x1 << 3, |
| CLK_V_I2S3 = 0x1 << 5, |
| CLK_V_I2S4 = 0x1 << 6, |
| CLK_V_I2C4 = 0x1 << 7, |
| CLK_V_SBC5 = 0x1 << 8, |
| CLK_V_SBC6 = 0x1 << 9, |
| CLK_V_AUDIO = 0x1 << 10, |
| CLK_V_APBIF = 0x1 << 11, |
| CLK_V_DAM0 = 0x1 << 12, |
| CLK_V_DAM1 = 0x1 << 13, |
| CLK_V_DAM2 = 0x1 << 14, |
| CLK_V_HDA2CODEC_2X = 0x1 << 15, |
| CLK_V_ATOMICS = 0x1 << 16, |
| CLK_V_ACTMON = 0x1 << 23, |
| CLK_V_EXTPERIPH1 = 0x1 << 24, |
| CLK_V_SATA = 0x1 << 28, |
| CLK_V_HDA = 0x1 << 29, |
| |
| CLK_W_HDA2HDMICODEC = 0x1 << 0, |
| CLK_W_SATACOLD = 0x1 << 1, |
| CLK_W_CEC = 0x1 << 8, |
| CLK_W_XUSB_PADCTL = 0x1 << 14, |
| CLK_W_ENTROPY = 0x1 << 21, |
| CLK_W_AMX0 = 0x1 << 25, |
| CLK_W_ADX0 = 0x1 << 26, |
| CLK_W_DVFS = 0x1 << 27, |
| CLK_W_XUSB_SS = 0x1 << 28, |
| CLK_W_MC1 = 0x1 << 30, |
| CLK_W_EMC1 = 0x1 << 31, |
| |
| CLK_X_AFC0 = 0x1 << 31, |
| CLK_X_AFC1 = 0x1 << 30, |
| CLK_X_AFC2 = 0x1 << 29, |
| CLK_X_AFC3 = 0x1 << 28, |
| CLK_X_AFC4 = 0x1 << 27, |
| CLK_X_AFC5 = 0x1 << 26, |
| CLK_X_AMX1 = 0x1 << 25, |
| CLK_X_GPU = 0x1 << 24, |
| CLK_X_SOR0 = 0x1 << 22, |
| CLK_X_DPAUX = 0x1 << 21, |
| CLK_X_ADX1 = 0x1 << 20, |
| CLK_X_VIC = 0x1 << 18, |
| CLK_X_CLK72MHZ = 0x1 << 17, |
| CLK_X_HDMI_AUDIO = 0x1 << 16, |
| CLK_X_EMC_DLL = 0x1 << 14, |
| CLK_X_VIM2_CLK = 0x1 << 11, |
| CLK_X_I2C6 = 0x1 << 6, |
| CLK_X_CAM_MCLK2 = 0x1 << 5, |
| CLK_X_CAM_MCLK = 0x1 << 4, |
| CLK_X_SPARE = 0x1 << 0, |
| }; |
| |
| /* PLL stabilization delay in usec */ |
| #define CLOCK_PLL_STABLE_DELAY_US 300 |
| |
| #define IO_STABILIZATION_DELAY (2) |
| |
| /* Calculate clock fractional divider value from ref and target frequencies. |
| * This is for a U7.1 format. This is not well written up in the book and |
| * there have been some questions about this macro, so here we go. |
| * U7.1 format is defined as (ddddddd+1) + (h*.5) |
| * The lowest order bit is actually a fractional bit. |
| * Hence, the divider can be thought of as 9 bits. |
| * So: |
| * divider = ((ref/freq) << 1 - 1) (upper 7 bits) | |
| * (ref/freq & 1) (low order half-bit) |
| * however we can't do fractional arithmetic ... these are integers! |
| * So we normalize by shifting the result left 1 bit, and extracting |
| * ddddddd and h directly to the returned u8. |
| * divider = 2*(ref/freq); |
| * We want to |
| * preserve 7 bits of divisor and one bit of fraction, in 8 bits, as well as |
| * subtract one from ddddddd. Since we computed ref*2, the dddddd is now nicely |
| * situated in the upper 7 bits, and the h is sitting there in the low order |
| * bit. To subtract 1 from ddddddd, just subtract 2 from the 8-bit number |
| * and voila, upper 7 bits are (ref/freq-1), and lowest bit is h. Since you |
| * will assign this to a u8, it gets nicely truncated for you. |
| */ |
| #define CLK_DIVIDER(REF, FREQ) (div_round_up(((REF) * 2), (FREQ)) - 2) |
| |
| /* Calculate clock frequency value from reference and clock divider value |
| * The discussion in the book is pretty lacking. |
| * The idea is that we need to divide a ref clock by a divisor |
| * in U7.1 format, where 7 upper bits are the integer |
| * and lowest order bit is a fraction. |
| * from the book, U7.1 is (ddddddd+1) + (h*.5) |
| * To normalize to an actual number, we might do this: |
| * ((d>>7+1)&0x7f) + (d&1 >> 1) |
| * but as you might guess, the low order bit would be lost. |
| * Since we can't express the fractional bit, we need to multiply it all by 2. |
| * ((d + 2)&0xfe) + (d & 1) |
| * Since we're just adding +2, the lowest order bit is preserved. Hence |
| * (d+2) is the same as ((d + 2)&0xfe) + (d & 1) |
| * |
| * Since you multiply denominator * 2 (by NOT shifting it), |
| * you multiply numerator * 2 to cancel it out. |
| */ |
| #define CLK_FREQUENCY(REF, REG) (((REF) * 2) / ((REG) + 2)) |
| |
| static inline void _clock_set_div(u32 *reg, const char *name, u32 div, |
| u32 div_mask, u32 src) |
| { |
| // The I2C and UART divisors are 16 bit while all the others are 8 bit. |
| // The I2C clocks are handled by the specialized macro below, but the |
| // UART clocks aren't. Don't use this function on UART clocks. |
| if (div & ~div_mask) { |
| printk(BIOS_ERR, "%s clock divisor overflow!", name); |
| hlt(); |
| } |
| clrsetbits_le32(reg, CLK_SOURCE_MASK | CLK_DIVISOR_MASK, |
| src << CLK_SOURCE_SHIFT | div); |
| } |
| |
| #define clock_configure_irregular_source(device, src, freq, src_id) \ |
| _clock_set_div(&clk_rst->clk_src_##device, #device, \ |
| CLK_DIVIDER(TEGRA_##src##_KHZ, freq), 0xff, src_id) |
| |
| /* Warning: Some devices just use different bits for the same sources for no |
| * apparent reason. *Always* double-check the TRM before trusting this macro. */ |
| #define clock_configure_source(device, src, freq) \ |
| clock_configure_irregular_source(device, src, freq, src) |
| |
| /* The I2C divisors are not 7.1 divisors like the others, they divide by n + 1 |
| * directly. Also, there are internal divisors in the I2C controller itself. |
| * We can deal with those here and make it easier to select what the actual |
| * bus frequency will be. The 0x19 value is the default divisor in the |
| * clk_divisor register in the controller, and 8 is just a magic number in the |
| * documentation. |
| */ |
| #define clock_configure_i2c_scl_freq(device, src, freq) \ |
| _clock_set_div(&clk_rst->clk_src_##device, #device, \ |
| div_round_up(TEGRA_##src##_KHZ, (freq) * (0x19 + 1) * 8) - 1, \ |
| 0xffff, src) |
| |
| enum clock_source { /* Careful: Not true for all sources, always check TRM! */ |
| PLLP = 0, |
| PLLC2 = 1, |
| PLLC = 2, |
| PLLD = 2, |
| PLLC3 = 3, |
| PLLA = 3, |
| PLLM = 4, |
| PLLD2 = 5, |
| CLK_M = 6, |
| }; |
| |
| /* soc-specific */ |
| #define TEGRA_CLK_M_KHZ clock_get_osc_khz() |
| #define TEGRA_PLLX_KHZ CONFIG_PLLX_KHZ |
| #define TEGRA_PLLP_KHZ (408000) |
| #define TEGRA_PLLC_KHZ (600000) |
| #define TEGRA_PLLD_KHZ (925000) |
| #define TEGRA_PLLU_KHZ (960000) |
| |
| #define TEGRA_SCLK_KHZ (300000) |
| #define TEGRA_HCLK_RATIO 1 |
| #define TEGRA_HCLK_KHZ (TEGRA_SCLK_KHZ / (1 + TEGRA_HCLK_RATIO)) |
| #define TEGRA_PCLK_RATIO 0 |
| #define TEGRA_PCLK_KHZ (TEGRA_HCLK_KHZ / (1 + TEGRA_PCLK_RATIO)) |
| |
| int clock_get_osc_khz(void); |
| int clock_get_pll_input_khz(void); |
| u32 clock_display(u32 frequency); |
| void clock_early_uart(void); |
| void clock_external_output(int clk_id); |
| void clock_sdram(u32 m, u32 n, u32 p, u32 setup, u32 ph45, u32 ph90, |
| u32 ph135, u32 kvco, u32 kcp, u32 stable_time, u32 emc_source, |
| u32 same_freq); |
| void clock_cpu0_config(void * entry); |
| void clock_cpu0_remove_reset(void); |
| void clock_halt_avp(void); |
| void clock_enable_clear_reset(u32 l, u32 h, u32 u, u32 v, u32 w, u32 x); |
| void clock_reset_l(u32 l); |
| void clock_reset_h(u32 h); |
| void clock_reset_u(u32 u); |
| void clock_reset_v(u32 v); |
| void clock_reset_w(u32 w); |
| void clock_reset_x(u32 x); |
| void clock_init(void); |
| void clock_init_arm_generic_timer(void); |
| void sor_clock_stop(void); |
| void sor_clock_start(void); |
| |
| #endif /* __SOC_NVIDIA_TEGRA124_CLOCK_H__ */ |