upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
622 lines
16 KiB
622 lines
16 KiB
/*
|
|
* Copyright (c) 2010-2013, 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/>.
|
|
*/
|
|
|
|
/* Tegra30 Clock control functions */
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/tegra.h>
|
|
#include <asm/arch-tegra/clk_rst.h>
|
|
#include <asm/arch-tegra/timer.h>
|
|
#include <div64.h>
|
|
#include <fdtdec.h>
|
|
|
|
/*
|
|
* Clock types that we can use as a source. The Tegra30 has muxes for the
|
|
* peripheral clocks, and in most cases there are four options for the clock
|
|
* source. This gives us a clock 'type' and exploits what commonality exists
|
|
* in the device.
|
|
*
|
|
* Letters are obvious, except for T which means CLK_M, and S which means the
|
|
* clock derived from 32KHz. Beware that CLK_M (also called OSC in the
|
|
* datasheet) and PLL_M are different things. The former is the basic
|
|
* clock supplied to the SOC from an external oscillator. The latter is the
|
|
* memory clock PLL.
|
|
*
|
|
* See definitions in clock_id in the header file.
|
|
*/
|
|
enum clock_type_id {
|
|
CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */
|
|
CLOCK_TYPE_MCPA, /* and so on */
|
|
CLOCK_TYPE_MCPT,
|
|
CLOCK_TYPE_PCM,
|
|
CLOCK_TYPE_PCMT,
|
|
CLOCK_TYPE_PCMT16,
|
|
CLOCK_TYPE_PDCT,
|
|
CLOCK_TYPE_ACPT,
|
|
CLOCK_TYPE_ASPTE,
|
|
CLOCK_TYPE_PMDACD2T,
|
|
CLOCK_TYPE_PCST,
|
|
|
|
CLOCK_TYPE_COUNT,
|
|
CLOCK_TYPE_NONE = -1, /* invalid clock type */
|
|
};
|
|
|
|
enum {
|
|
CLOCK_MAX_MUX = 8 /* number of source options for each clock */
|
|
};
|
|
|
|
enum {
|
|
MASK_BITS_31_30 = 2, /* num of bits used to specify clock source */
|
|
MASK_BITS_31_29,
|
|
MASK_BITS_29_28,
|
|
};
|
|
|
|
/*
|
|
* Clock source mux for each clock type. This just converts our enum into
|
|
* a list of mux sources for use by the code.
|
|
*
|
|
* Note:
|
|
* The extra column in each clock source array is used to store the mask
|
|
* bits in its register for the source.
|
|
*/
|
|
#define CLK(x) CLOCK_ID_ ## x
|
|
static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
|
|
{ CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_30},
|
|
{ CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC),
|
|
CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_31_29},
|
|
{ CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO),
|
|
CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE),
|
|
MASK_BITS_31_29},
|
|
{ CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC),
|
|
CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
|
|
MASK_BITS_29_28}
|
|
};
|
|
|
|
/*
|
|
* Clock type for each peripheral clock source. We put the name in each
|
|
* record just so it is easy to match things up
|
|
*/
|
|
#define TYPE(name, type) type
|
|
static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
|
|
/* 0x00 */
|
|
TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT),
|
|
TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT),
|
|
TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT),
|
|
TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PCM),
|
|
TYPE(PERIPHC_PWM, CLOCK_TYPE_PCST), /* only PWM uses b29:28 */
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_SBC2, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_SBC3, CLOCK_TYPE_PCMT),
|
|
|
|
/* 0x08 */
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_I2C1, CLOCK_TYPE_PCMT16),
|
|
TYPE(PERIPHC_DVC_I2C, CLOCK_TYPE_PCMT16),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_SBC1, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T),
|
|
TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T),
|
|
|
|
/* 0x10 */
|
|
TYPE(PERIPHC_CVE, CLOCK_TYPE_PDCT),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_VI, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_G3D, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_G2D, CLOCK_TYPE_MCPA),
|
|
|
|
/* 0x18 */
|
|
TYPE(PERIPHC_NDFLASH, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_VFIR, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_EPP, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_MPE, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_MIPI, CLOCK_TYPE_PCMT), /* MIPI base-band HSI */
|
|
TYPE(PERIPHC_UART1, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_UART2, CLOCK_TYPE_PCMT),
|
|
|
|
/* 0x20 */
|
|
TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_TVO, CLOCK_TYPE_PDCT),
|
|
TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_TVDAC, CLOCK_TYPE_PDCT),
|
|
TYPE(PERIPHC_I2C2, CLOCK_TYPE_PCMT16),
|
|
TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPT),
|
|
|
|
/* 0x28 */
|
|
TYPE(PERIPHC_UART3, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_VI, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_SBC4, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_I2C3, CLOCK_TYPE_PCMT16),
|
|
TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PCMT),
|
|
|
|
/* 0x30 */
|
|
TYPE(PERIPHC_UART4, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_UART5, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_VDE, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_OWR, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_NOR, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_CSITE, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
|
|
/* 0x38h */ /* Jumps to reg offset 0x3B0h - new for T30 */
|
|
TYPE(PERIPHC_G3D2, CLOCK_TYPE_MCPA),
|
|
TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PCST), /* s/b PCTS */
|
|
TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT),
|
|
TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT),
|
|
TYPE(PERIPHC_I2C4, CLOCK_TYPE_PCMT16),
|
|
TYPE(PERIPHC_SBC5, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_SBC6, CLOCK_TYPE_PCMT),
|
|
|
|
/* 0x40 */
|
|
TYPE(PERIPHC_AUDIO, CLOCK_TYPE_ACPT),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_DAM0, CLOCK_TYPE_ACPT),
|
|
TYPE(PERIPHC_DAM1, CLOCK_TYPE_ACPT),
|
|
TYPE(PERIPHC_DAM2, CLOCK_TYPE_ACPT),
|
|
TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PCST), /* MASK 31:30 */
|
|
TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
|
|
|
|
/* 0x48 */
|
|
TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
|
|
TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
|
|
TYPE(PERIPHC_NANDSPEED, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PCST), /* MASK 31:30 */
|
|
TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_SPEEDO, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
|
|
/* 0x50 */
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE),
|
|
TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT), /* offset 0x420h */
|
|
TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT),
|
|
TYPE(PERIPHC_HDA, CLOCK_TYPE_PCMT),
|
|
};
|
|
|
|
/*
|
|
* This array translates a periph_id to a periphc_internal_id
|
|
*
|
|
* Not present/matched up:
|
|
* uint vi_sensor; _VI_SENSOR_0, 0x1A8
|
|
* SPDIF - which is both 0x08 and 0x0c
|
|
*
|
|
*/
|
|
#define NONE(name) (-1)
|
|
#define OFFSET(name, value) PERIPHC_ ## name
|
|
static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
|
|
/* Low word: 31:0 */
|
|
NONE(CPU),
|
|
NONE(COP),
|
|
NONE(TRIGSYS),
|
|
NONE(RESERVED3),
|
|
NONE(RESERVED4),
|
|
NONE(TMR),
|
|
PERIPHC_UART1,
|
|
PERIPHC_UART2, /* and vfir 0x68 */
|
|
|
|
/* 8 */
|
|
NONE(GPIO),
|
|
PERIPHC_SDMMC2,
|
|
NONE(SPDIF), /* 0x08 and 0x0c, unclear which to use */
|
|
PERIPHC_I2S1,
|
|
PERIPHC_I2C1,
|
|
PERIPHC_NDFLASH,
|
|
PERIPHC_SDMMC1,
|
|
PERIPHC_SDMMC4,
|
|
|
|
/* 16 */
|
|
NONE(RESERVED16),
|
|
PERIPHC_PWM,
|
|
PERIPHC_I2S2,
|
|
PERIPHC_EPP,
|
|
PERIPHC_VI,
|
|
PERIPHC_G2D,
|
|
NONE(USBD),
|
|
NONE(ISP),
|
|
|
|
/* 24 */
|
|
PERIPHC_G3D,
|
|
NONE(RESERVED25),
|
|
PERIPHC_DISP2,
|
|
PERIPHC_DISP1,
|
|
PERIPHC_HOST1X,
|
|
NONE(VCP),
|
|
PERIPHC_I2S0,
|
|
NONE(CACHE2),
|
|
|
|
/* Middle word: 63:32 */
|
|
NONE(MEM),
|
|
NONE(AHBDMA),
|
|
NONE(APBDMA),
|
|
NONE(RESERVED35),
|
|
NONE(RESERVED36),
|
|
NONE(STAT_MON),
|
|
NONE(RESERVED38),
|
|
NONE(RESERVED39),
|
|
|
|
/* 40 */
|
|
NONE(KFUSE),
|
|
PERIPHC_SBC1,
|
|
PERIPHC_NOR,
|
|
NONE(RESERVED43),
|
|
PERIPHC_SBC2,
|
|
NONE(RESERVED45),
|
|
PERIPHC_SBC3,
|
|
PERIPHC_DVC_I2C,
|
|
|
|
/* 48 */
|
|
NONE(DSI),
|
|
PERIPHC_TVO, /* also CVE 0x40 */
|
|
PERIPHC_MIPI,
|
|
PERIPHC_HDMI,
|
|
NONE(CSI),
|
|
PERIPHC_TVDAC,
|
|
PERIPHC_I2C2,
|
|
PERIPHC_UART3,
|
|
|
|
/* 56 */
|
|
NONE(RESERVED56),
|
|
PERIPHC_EMC,
|
|
NONE(USB2),
|
|
NONE(USB3),
|
|
PERIPHC_MPE,
|
|
PERIPHC_VDE,
|
|
NONE(BSEA),
|
|
NONE(BSEV),
|
|
|
|
/* Upper word 95:64 */
|
|
PERIPHC_SPEEDO,
|
|
PERIPHC_UART4,
|
|
PERIPHC_UART5,
|
|
PERIPHC_I2C3,
|
|
PERIPHC_SBC4,
|
|
PERIPHC_SDMMC3,
|
|
NONE(PCIE),
|
|
PERIPHC_OWR,
|
|
|
|
/* 72 */
|
|
NONE(AFI),
|
|
PERIPHC_CSITE,
|
|
NONE(PCIEXCLK),
|
|
NONE(AVPUCQ),
|
|
NONE(RESERVED76),
|
|
NONE(RESERVED77),
|
|
NONE(RESERVED78),
|
|
NONE(DTV),
|
|
|
|
/* 80 */
|
|
PERIPHC_NANDSPEED,
|
|
PERIPHC_I2CSLOW,
|
|
NONE(DSIB),
|
|
NONE(RESERVED83),
|
|
NONE(IRAMA),
|
|
NONE(IRAMB),
|
|
NONE(IRAMC),
|
|
NONE(IRAMD),
|
|
|
|
/* 88 */
|
|
NONE(CRAM2),
|
|
NONE(RESERVED89),
|
|
NONE(MDOUBLER),
|
|
NONE(RESERVED91),
|
|
NONE(SUSOUT),
|
|
NONE(RESERVED93),
|
|
NONE(RESERVED94),
|
|
NONE(RESERVED95),
|
|
|
|
/* V word: 31:0 */
|
|
NONE(CPUG),
|
|
NONE(CPULP),
|
|
PERIPHC_G3D2,
|
|
PERIPHC_MSELECT,
|
|
PERIPHC_TSENSOR,
|
|
PERIPHC_I2S3,
|
|
PERIPHC_I2S4,
|
|
PERIPHC_I2C4,
|
|
|
|
/* 08 */
|
|
PERIPHC_SBC5,
|
|
PERIPHC_SBC6,
|
|
PERIPHC_AUDIO,
|
|
NONE(APBIF),
|
|
PERIPHC_DAM0,
|
|
PERIPHC_DAM1,
|
|
PERIPHC_DAM2,
|
|
PERIPHC_HDA2CODEC2X,
|
|
|
|
/* 16 */
|
|
NONE(ATOMICS),
|
|
NONE(RESERVED17),
|
|
NONE(RESERVED18),
|
|
NONE(RESERVED19),
|
|
NONE(RESERVED20),
|
|
NONE(RESERVED21),
|
|
NONE(RESERVED22),
|
|
PERIPHC_ACTMON,
|
|
|
|
/* 24 */
|
|
NONE(RESERVED24),
|
|
NONE(RESERVED25),
|
|
NONE(RESERVED26),
|
|
NONE(RESERVED27),
|
|
PERIPHC_SATA,
|
|
PERIPHC_HDA,
|
|
NONE(RESERVED30),
|
|
NONE(RESERVED31),
|
|
|
|
/* W word: 31:0 */
|
|
NONE(HDA2HDMICODEC),
|
|
NONE(SATACOLD),
|
|
NONE(RESERVED0_PCIERX0),
|
|
NONE(RESERVED1_PCIERX1),
|
|
NONE(RESERVED2_PCIERX2),
|
|
NONE(RESERVED3_PCIERX3),
|
|
NONE(RESERVED4_PCIERX4),
|
|
NONE(RESERVED5_PCIERX5),
|
|
|
|
/* 40 */
|
|
NONE(CEC),
|
|
NONE(RESERVED6_PCIE2),
|
|
NONE(RESERVED7_EMC),
|
|
NONE(RESERVED8_HDMI),
|
|
NONE(RESERVED9_SATA),
|
|
NONE(RESERVED10_MIPI),
|
|
NONE(EX_RESERVED46),
|
|
NONE(EX_RESERVED47),
|
|
};
|
|
|
|
/*
|
|
* Get the oscillator frequency, from the corresponding hardware configuration
|
|
* field. Note that T30 supports 3 new higher freqs, but we map back
|
|
* to the old T20 freqs. Support for the higher oscillators is TBD.
|
|
*/
|
|
enum clock_osc_freq clock_get_osc_freq(void)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 reg;
|
|
|
|
reg = readl(&clkrst->crc_osc_ctrl);
|
|
reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
|
|
|
|
if (reg & 1) /* one of the newer freqs */
|
|
printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg);
|
|
|
|
return reg >> 2; /* Map to most common (T20) freqs */
|
|
}
|
|
|
|
/* Returns a pointer to the clock source register for a peripheral */
|
|
u32 *get_periph_source_reg(enum periph_id periph_id)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
enum periphc_internal_id internal_id;
|
|
|
|
/* Coresight is a special case */
|
|
if (periph_id == PERIPH_ID_CSI)
|
|
return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
|
|
|
|
assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
|
|
internal_id = periph_id_to_internal_id[periph_id];
|
|
assert(internal_id != -1);
|
|
if (internal_id >= PERIPHC_VW_FIRST) {
|
|
internal_id -= PERIPHC_VW_FIRST;
|
|
return &clkrst->crc_clk_src_vw[internal_id];
|
|
} else
|
|
return &clkrst->crc_clk_src[internal_id];
|
|
}
|
|
|
|
/**
|
|
* Given a peripheral ID and the required source clock, this returns which
|
|
* value should be programmed into the source mux for that peripheral.
|
|
*
|
|
* There is special code here to handle the one source type with 5 sources.
|
|
*
|
|
* @param periph_id peripheral to start
|
|
* @param source PLL id of required parent clock
|
|
* @param mux_bits Set to number of bits in mux register: 2 or 4
|
|
* @param divider_bits Set to number of divider bits (8 or 16)
|
|
* @return mux value (0-4, or -1 if not found)
|
|
*/
|
|
int get_periph_clock_source(enum periph_id periph_id,
|
|
enum clock_id parent, int *mux_bits, int *divider_bits)
|
|
{
|
|
enum clock_type_id type;
|
|
enum periphc_internal_id internal_id;
|
|
int mux;
|
|
|
|
assert(clock_periph_id_isvalid(periph_id));
|
|
|
|
internal_id = periph_id_to_internal_id[periph_id];
|
|
assert(periphc_internal_id_isvalid(internal_id));
|
|
|
|
type = clock_periph_type[internal_id];
|
|
assert(clock_type_id_isvalid(type));
|
|
|
|
*mux_bits = clock_source[type][CLOCK_MAX_MUX];
|
|
|
|
if (type == CLOCK_TYPE_PCMT16)
|
|
*divider_bits = 16;
|
|
else
|
|
*divider_bits = 8;
|
|
|
|
for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
|
|
if (clock_source[type][mux] == parent)
|
|
return mux;
|
|
|
|
/* if we get here, either us or the caller has made a mistake */
|
|
printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
|
|
parent);
|
|
return -1;
|
|
}
|
|
|
|
void clock_set_enable(enum periph_id periph_id, int enable)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 *clk;
|
|
u32 reg;
|
|
|
|
/* Enable/disable the clock to this peripheral */
|
|
assert(clock_periph_id_isvalid(periph_id));
|
|
if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
|
|
clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
|
|
else
|
|
clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
|
|
reg = readl(clk);
|
|
if (enable)
|
|
reg |= PERIPH_MASK(periph_id);
|
|
else
|
|
reg &= ~PERIPH_MASK(periph_id);
|
|
writel(reg, clk);
|
|
}
|
|
|
|
void reset_set_enable(enum periph_id periph_id, int enable)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 *reset;
|
|
u32 reg;
|
|
|
|
/* Enable/disable reset to the peripheral */
|
|
assert(clock_periph_id_isvalid(periph_id));
|
|
if (periph_id < PERIPH_ID_VW_FIRST)
|
|
reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
|
|
else
|
|
reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
|
|
reg = readl(reset);
|
|
if (enable)
|
|
reg |= PERIPH_MASK(periph_id);
|
|
else
|
|
reg &= ~PERIPH_MASK(periph_id);
|
|
writel(reg, reset);
|
|
}
|
|
|
|
#ifdef CONFIG_OF_CONTROL
|
|
/*
|
|
* Convert a device tree clock ID to our peripheral ID. They are mostly
|
|
* the same but we are very cautious so we check that a valid clock ID is
|
|
* provided.
|
|
*
|
|
* @param clk_id Clock ID according to tegra30 device tree binding
|
|
* @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
|
|
*/
|
|
enum periph_id clk_id_to_periph_id(int clk_id)
|
|
{
|
|
if (clk_id > PERIPH_ID_COUNT)
|
|
return PERIPH_ID_NONE;
|
|
|
|
switch (clk_id) {
|
|
case PERIPH_ID_RESERVED3:
|
|
case PERIPH_ID_RESERVED4:
|
|
case PERIPH_ID_RESERVED16:
|
|
case PERIPH_ID_RESERVED24:
|
|
case PERIPH_ID_RESERVED35:
|
|
case PERIPH_ID_RESERVED43:
|
|
case PERIPH_ID_RESERVED45:
|
|
case PERIPH_ID_RESERVED56:
|
|
case PERIPH_ID_RESERVED76:
|
|
case PERIPH_ID_RESERVED77:
|
|
case PERIPH_ID_RESERVED78:
|
|
case PERIPH_ID_RESERVED83:
|
|
case PERIPH_ID_RESERVED89:
|
|
case PERIPH_ID_RESERVED91:
|
|
case PERIPH_ID_RESERVED93:
|
|
case PERIPH_ID_RESERVED94:
|
|
case PERIPH_ID_RESERVED95:
|
|
return PERIPH_ID_NONE;
|
|
default:
|
|
return clk_id;
|
|
}
|
|
}
|
|
#endif /* CONFIG_OF_CONTROL */
|
|
|
|
void clock_early_init(void)
|
|
{
|
|
/*
|
|
* PLLP output frequency set to 408Mhz
|
|
* PLLC output frequency set to 228Mhz
|
|
*/
|
|
switch (clock_get_osc_freq()) {
|
|
case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
|
|
clock_set_rate(CLOCK_ID_PERIPH, 408, 12, 0, 8);
|
|
clock_set_rate(CLOCK_ID_CGENERAL, 456, 12, 1, 8);
|
|
break;
|
|
|
|
case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
|
|
clock_set_rate(CLOCK_ID_PERIPH, 408, 26, 0, 8);
|
|
clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
|
|
break;
|
|
|
|
case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
|
|
clock_set_rate(CLOCK_ID_PERIPH, 408, 13, 0, 8);
|
|
clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
|
|
break;
|
|
case CLOCK_OSC_FREQ_19_2:
|
|
default:
|
|
/*
|
|
* These are not supported. It is too early to print a
|
|
* message and the UART likely won't work anyway due to the
|
|
* oscillator being wrong.
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
|
|
void arch_timer_init(void)
|
|
{
|
|
}
|
|
|