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u-boot/arch/arm/cpu/tegra114-common/clock.c
Tom Warren b40f734af9 Tegra114: Initialize System Counter (TSC) with osc frequency 
T114 needs the SYSCTR0 counter initialized so the TSC can be
read by the kernel. Do it in the bootloader since it's a write-once
deal (secure/non-secure mode dependent).

Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
2013-04-15 11:01:38 -07:00

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/*
* 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/>.
*/
/* Tegra114 Clock control functions */
#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/sysctr.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 Tegra114 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_I2C5, 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 */
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(RTC),
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),
NONE(SBC1), /* SBC1, 0x34, is this SPI1? */
PERIPHC_NOR,
NONE(RESERVED43),
PERIPHC_SBC2,
NONE(RESERVED45),
PERIPHC_SBC3,
PERIPHC_I2C5,
/* 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(RESERVED1_SATACOLD),
NONE(RESERVED2_PCIERX0),
NONE(RESERVED3_PCIERX1),
NONE(RESERVED4_PCIERX2),
NONE(RESERVED5_PCIERX3),
NONE(RESERVED6_PCIERX4),
NONE(RESERVED7_PCIERX5),
/* 40 */
NONE(CEC),
NONE(PCIE2_IOBIST),
NONE(EMC_IOBIST),
NONE(HDMI_IOBIST),
NONE(SATA_IOBIST),
NONE(MIPI_IOBIST),
NONE(EMC1_IOBIST),
NONE(XUSB),
/* 48 */
NONE(CILAB),
NONE(CILCD),
NONE(CILE),
NONE(DSIA_LP),
NONE(DSIB_LP),
NONE(RESERVED21_ENTROPY),
NONE(RESERVED22_W),
NONE(RESERVED23_W),
/* 56 */
NONE(RESERVED24_W),
NONE(AMX0),
NONE(ADX0),
NONE(DVFS),
NONE(XUSB_SS),
NONE(EMC_DLL),
NONE(MC1),
NONE(EMC1),
};
/*
* Get the oscillator frequency, from the corresponding hardware configuration
* field. Note that T30/T114 support 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 tegra114 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_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)
{
struct clk_rst_ctlr *clkrst =
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
/*
* PLLP output frequency set to 408Mhz
* PLLC output frequency set to 600Mhz
* PLLD output frequency set to 925Mhz
*/
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, 600, 12, 0, 8);
clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
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);
clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
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);
clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
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;
}
/* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */
writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]);
/* PLLC_MISC: Set LOCK_ENABLE */
writel(0x01000000, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc);
udelay(2);
/* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1 */
writel(0x40000C10, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
udelay(2);
}
void arch_timer_init(void)
{
struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
u32 freq, val;
freq = clock_get_rate(CLOCK_ID_OSC);
debug("%s: osc freq is %dHz [0x%08X]\n", __func__, freq, freq);
/* ARM CNTFRQ */
asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq));
/* Only T114 has the System Counter regs */
debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
writel(freq, &sysctr->cntfid0);
val = readl(&sysctr->cntcr);
val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
writel(val, &sysctr->cntcr);
debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
}
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