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core support for Freescale mx31

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This patch adds the core support for Freescale mx31

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
master
Sascha Hauer 17 years ago committed by Peter Pearse
parent 8bf69d8178
commit c98b47ad24
6 changed files with 654 additions and 0 deletions
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  1. 44
      cpu/arm1136/mx31/Makefile
  2. 99
      cpu/arm1136/mx31/generic.c
  3. 113
      cpu/arm1136/mx31/interrupts.c
  4. 230
      cpu/arm1136/mx31/serial.c
  5. 136
      include/asm-arm/arch-mx31/mx31-regs.h
  6. 32
      include/asm-arm/arch-mx31/mx31.h

44
cpu/arm1136/mx31/Makefile
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#
# (C) Copyright 2000-2008
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# 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 Foundatio; either version 2 of
# the License, or (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).a
COBJS = interrupts.o serial.o generic.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
all: $(obj).depend $(LIB)
$(LIB): $(OBJS)
$(AR) $(ARFLAGS) $@ $(OBJS)
#######################################################################
##
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend

99
cpu/arm1136/mx31/generic.c
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/*
* (C) Copyright 2007
* Sascha Hauer, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/arch/mx31-regs.h>
static u32 mx31_decode_pll(u32 reg, u32 infreq)
{
u32 mfi = (reg >> 10) & 0xf;
u32 mfn = reg & 0x3f;
u32 mfd = (reg >> 16) & 0x3f;
u32 pd = (reg >> 26) & 0xf;
mfi = mfi <= 5 ? 5 : mfi;
mfd += 1;
pd += 1;
return ((2 * (infreq >> 10) * (mfi * mfd + mfn)) /
(mfd * pd)) << 10;
}
u32 mx31_get_mpl_dpdgck_clk(void)
{
u32 infreq;
if ((__REG(CCM_CCMR) & CCMR_PRCS_MASK) == CCMR_FPM)
infreq = CONFIG_MX31_CLK32 * 1024;
else
infreq = CONFIG_MX31_HCLK_FREQ;
return mx31_decode_pll(__REG(CCM_MPCTL), infreq); }
u32 mx31_get_mcu_main_clk(void)
{
/* For now we assume mpl_dpdgck_clk == mcu_main_clk
* which should be correct for most boards
*/
return mx31_get_mpl_dpdgck_clk();
}
u32 mx31_get_ipg_clk(void)
{
u32 freq = mx31_get_mcu_main_clk();
u32 pdr0 = __REG(CCM_PDR0);
freq /= ((pdr0 >> 3) & 0x7) + 1;
freq /= ((pdr0 >> 6) & 0x3) + 1;
return freq;
}
void mx31_dump_clocks(void)
{
u32 cpufreq = mx31_get_mcu_main_clk();
printf("mx31 cpu clock: %dMHz\n", cpufreq / 1000000);
printf("ipg clock : %dHz\n", mx31_get_ipg_clk());
}
void mx31_gpio_mux(unsigned long mode)
{
unsigned long reg, shift, tmp;
reg = IOMUXC_BASE + (mode & 0xfc);
shift = (~mode & 0x3) * 8;
tmp = __REG(reg);
tmp &= ~(0xff << shift);
tmp |= ((mode >> 8) & 0xff) << shift;
__REG(reg) = tmp;
}
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
printf("CPU: Freescale i.MX31 at %d MHz\n",
mx31_get_mcu_main_clk() / 1000000);
return 0;
}
#endif

113
cpu/arm1136/mx31/interrupts.c
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/*
* (C) Copyright 2007
* Sascha Hauer, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/arch/mx31-regs.h>
#define TIMER_BASE 0x53f90000 /* General purpose timer 1 */
/* General purpose timers registers */
#define GPTCR __REG(TIMER_BASE) /* Control register */
#define GPTPR __REG(TIMER_BASE + 0x4) /* Prescaler register */
#define GPTSR __REG(TIMER_BASE + 0x8) /* Status register */
#define GPTCNT __REG(TIMER_BASE + 0x24) /* Counter register */
/* General purpose timers bitfields */
#define GPTCR_SWR (1<<15) /* Software reset */
#define GPTCR_FRR (1<<9) /* Freerun / restart */
#define GPTCR_CLKSOURCE_32 (4<<6) /* Clock source */
#define GPTCR_TEN (1) /* Timer enable */
/*
* nothing really to do with interrupts, just starts up a counter.
*/
int interrupt_init(void)
{
int i;
/* setup GP Timer 1 */
GPTCR = GPTCR_SWR;
for (i = 0; i < 100; i++) GPTCR = 0; /* We have no udelay by now */
GPTPR = 0; /* 32Khz */
/* Freerun Mode, PERCLK1 input */
GPTCR |= GPTCR_CLKSOURCE_32 | GPTCR_TEN;
return 0;
}
void reset_timer_masked(void)
{
GPTCR = 0;
/* Freerun Mode, PERCLK1 input*/
GPTCR = GPTCR_CLKSOURCE_32 | GPTCR_TEN;
}
ulong get_timer_masked(void)
{
ulong val = GPTCNT;
return val;
}
ulong get_timer(ulong base)
{
return get_timer_masked() - base;
}
void set_timer(ulong t)
{
}
/* delay x useconds AND perserve advance timstamp value */
void udelay(unsigned long usec)
{
ulong tmo, tmp;
if (usec >= 1000) {
/* "big" number, spread normalization to seconds */
/* start to normalize for usec to ticks per sec */
tmo = usec / 1000;
/* find number of "ticks" to wait to achieve target */
tmo *= CFG_HZ;
tmo /= 1000; /* finish normalize. */
} else {
/* else small number, don't kill it prior to HZ multiply */
tmo = usec * CFG_HZ;
tmo /= (1000*1000);
}
tmp = get_timer(0); /* get current timestamp */
if ((tmo + tmp + 1) < tmp)
/* setting this forward will roll time stamp */
/* reset "advancing" timestamp to 0, set lastinc value */
reset_timer_masked();
else
/* else, set advancing stamp wake up time */
tmo += tmp;
while (get_timer_masked() < tmo)/* loop till event */
/*NOP*/;
}
void reset_cpu(ulong addr)
{
__REG16(WDOG_BASE) = 4;
}

230
cpu/arm1136/mx31/serial.c
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/*
* (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <common.h>
#if defined CONFIG_MX31_UART
#include <asm/arch/mx31.h>
#define __REG(x) (*((volatile u32 *)(x)))
#ifdef CFG_MX31_UART1
#define UART_PHYS 0x43f90000
#elif defined(CFG_MX31_UART2)
#define UART_PHYS 0x43f94000
#elif defined(CFG_MX31_UART3)
#define UART_PHYS 0x5000c000
#elif defined(CFG_MX31_UART4)
#define UART_PHYS 0x43fb0000
#elif defined(CFG_MX31_UART5)
#define UART_PHYS 0x43fb4000
#else
#error "define CFG_MX31_UARTx to use the mx31 UART driver"
#endif
/* Register definitions */
#define URXD 0x0 /* Receiver Register */
#define UTXD 0x40 /* Transmitter Register */
#define UCR1 0x80 /* Control Register 1 */
#define UCR2 0x84 /* Control Register 2 */
#define UCR3 0x88 /* Control Register 3 */
#define UCR4 0x8c /* Control Register 4 */
#define UFCR 0x90 /* FIFO Control Register */
#define USR1 0x94 /* Status Register 1 */
#define USR2 0x98 /* Status Register 2 */
#define UESC 0x9c /* Escape Character Register */
#define UTIM 0xa0 /* Escape Timer Register */
#define UBIR 0xa4 /* BRM Incremental Register */
#define UBMR 0xa8 /* BRM Modulator Register */
#define UBRC 0xac /* Baud Rate Count Register */
#define UTS 0xb4 /* UART Test Register (mx31) */
/* UART Control Register Bit Fields.*/
#define URXD_CHARRDY (1<<15)
#define URXD_ERR (1<<14)
#define URXD_OVRRUN (1<<13)
#define URXD_FRMERR (1<<12)
#define URXD_BRK (1<<11)
#define URXD_PRERR (1<<10)
#define UCR1_ADEN (1<<15) /* Auto dectect interrupt */
#define UCR1_ADBR (1<<14) /* Auto detect baud rate */
#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */
#define UCR1_IDEN (1<<12) /* Idle condition interrupt */
#define UCR1_RRDYEN (1<<9) /* Recv ready interrupt enable */
#define UCR1_RDMAEN (1<<8) /* Recv ready DMA enable */
#define UCR1_IREN (1<<7) /* Infrared interface enable */
#define UCR1_TXMPTYEN (1<<6) /* Transimitter empty interrupt enable */
#define UCR1_RTSDEN (1<<5) /* RTS delta interrupt enable */
#define UCR1_SNDBRK (1<<4) /* Send break */
#define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */
#define UCR1_UARTCLKEN (1<<2) /* UART clock enabled */
#define UCR1_DOZE (1<<1) /* Doze */
#define UCR1_UARTEN (1<<0) /* UART enabled */
#define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */
#define UCR2_IRTS (1<<14) /* Ignore RTS pin */
#define UCR2_CTSC (1<<13) /* CTS pin control */
#define UCR2_CTS (1<<12) /* Clear to send */
#define UCR2_ESCEN (1<<11) /* Escape enable */
#define UCR2_PREN (1<<8) /* Parity enable */
#define UCR2_PROE (1<<7) /* Parity odd/even */
#define UCR2_STPB (1<<6) /* Stop */
#define UCR2_WS (1<<5) /* Word size */
#define UCR2_RTSEN (1<<4) /* Request to send interrupt enable */
#define UCR2_TXEN (1<<2) /* Transmitter enabled */
#define UCR2_RXEN (1<<1) /* Receiver enabled */
#define UCR2_SRST (1<<0) /* SW reset */
#define UCR3_DTREN (1<<13) /* DTR interrupt enable */
#define UCR3_PARERREN (1<<12) /* Parity enable */
#define UCR3_FRAERREN (1<<11) /* Frame error interrupt enable */
#define UCR3_DSR (1<<10) /* Data set ready */
#define UCR3_DCD (1<<9) /* Data carrier detect */
#define UCR3_RI (1<<8) /* Ring indicator */
#define UCR3_TIMEOUTEN (1<<7) /* Timeout interrupt enable */
#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */
#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */
#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */
#define UCR3_REF25 (1<<3) /* Ref freq 25 MHz */
#define UCR3_REF30 (1<<2) /* Ref Freq 30 MHz */
#define UCR3_INVT (1<<1) /* Inverted Infrared transmission */
#define UCR3_BPEN (1<<0) /* Preset registers enable */
#define UCR4_CTSTL_32 (32<<10) /* CTS trigger level (32 chars) */
#define UCR4_INVR (1<<9) /* Inverted infrared reception */
#define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */
#define UCR4_WKEN (1<<7) /* Wake interrupt enable */
#define UCR4_REF16 (1<<6) /* Ref freq 16 MHz */
#define UCR4_IRSC (1<<5) /* IR special case */
#define UCR4_TCEN (1<<3) /* Transmit complete interrupt enable */
#define UCR4_BKEN (1<<2) /* Break condition interrupt enable */
#define UCR4_OREN (1<<1) /* Receiver overrun interrupt enable */
#define UCR4_DREN (1<<0) /* Recv data ready interrupt enable */
#define UFCR_RXTL_SHF 0 /* Receiver trigger level shift */
#define UFCR_RFDIV (7<<7) /* Reference freq divider mask */
#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */
#define USR1_PARITYERR (1<<15) /* Parity error interrupt flag */
#define USR1_RTSS (1<<14) /* RTS pin status */
#define USR1_TRDY (1<<13) /* Transmitter ready interrupt/dma flag */
#define USR1_RTSD (1<<12) /* RTS delta */
#define USR1_ESCF (1<<11) /* Escape seq interrupt flag */
#define USR1_FRAMERR (1<<10) /* Frame error interrupt flag */
#define USR1_RRDY (1<<9) /* Receiver ready interrupt/dma flag */
#define USR1_TIMEOUT (1<<7) /* Receive timeout interrupt status */
#define USR1_RXDS (1<<6) /* Receiver idle interrupt flag */
#define USR1_AIRINT (1<<5) /* Async IR wake interrupt flag */
#define USR1_AWAKE (1<<4) /* Aysnc wake interrupt flag */
#define USR2_ADET (1<<15) /* Auto baud rate detect complete */
#define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */
#define USR2_DTRF (1<<13) /* DTR edge interrupt flag */
#define USR2_IDLE (1<<12) /* Idle condition */
#define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */
#define USR2_WAKE (1<<7) /* Wake */
#define USR2_RTSF (1<<4) /* RTS edge interrupt flag */
#define USR2_TXDC (1<<3) /* Transmitter complete */
#define USR2_BRCD (1<<2) /* Break condition */
#define USR2_ORE (1<<1) /* Overrun error */
#define USR2_RDR (1<<0) /* Recv data ready */
#define UTS_FRCPERR (1<<13) /* Force parity error */
#define UTS_LOOP (1<<12) /* Loop tx and rx */
#define UTS_TXEMPTY (1<<6) /* TxFIFO empty */
#define UTS_RXEMPTY (1<<5) /* RxFIFO empty */
#define UTS_TXFULL (1<<4) /* TxFIFO full */
#define UTS_RXFULL (1<<3) /* RxFIFO full */
#define UTS_SOFTRST (1<<0) /* Software reset */
DECLARE_GLOBAL_DATA_PTR;
void serial_setbrg(void)
{
u32 clk = mx31_get_ipg_clk();
if (!gd->baudrate)
gd->baudrate = CONFIG_BAUDRATE;
__REG(UART_PHYS + UFCR) = 4 << 7; /* divide input clock by 2 */
__REG(UART_PHYS + UBIR) = 0xf;
__REG(UART_PHYS + UBMR) = clk / (2 * gd->baudrate);
}
int serial_getc(void)
{
while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY);
return __REG(UART_PHYS + URXD);
}
void serial_putc(const char c)
{
__REG(UART_PHYS + UTXD) = c;
/* wait for transmitter to be ready */
while (!(__REG(UART_PHYS + UTS) & UTS_TXEMPTY));
/* If \n, also do \r */
if (c == '\n')
serial_putc('\r');
}
/*
* Test whether a character is in the RX buffer */
int serial_tstc(void)
{
/* If receive fifo is empty, return false */
if (__REG(UART_PHYS + UTS) & UTS_RXEMPTY)
return 0;
return 1;
}
void serial_puts(const char *s)
{
while (*s) {
serial_putc(*s++);
}
}
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
int serial_init(void)
{
__REG(UART_PHYS + UCR1) = 0x0;
__REG(UART_PHYS + UCR2) = 0x0;
while (!(__REG(UART_PHYS + UCR2) & UCR2_SRST));
__REG(UART_PHYS + UCR3) = 0x0704;
__REG(UART_PHYS + UCR4) = 0x8000;
__REG(UART_PHYS + UESC) = 0x002b;
__REG(UART_PHYS + UTIM) = 0x0;
__REG(UART_PHYS + UTS) = 0x0;
serial_setbrg();
__REG(UART_PHYS + UCR2) = UCR2_WS | UCR2_IRTS | UCR2_RXEN | \
UCR2_TXEN | UCR2_SRST;
__REG(UART_PHYS + UCR1) = UCR1_UARTEN;
return 0;
}
#endif /* CONFIG_MX31 */

136
include/asm-arm/arch-mx31/mx31-regs.h
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/*
*
* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_MX31_REGS_H
#define __ASM_ARCH_MX31_REGS_H
#define __REG(x) (*((volatile u32 *)(x)))
#define __REG16(x) (*((volatile u16 *)(x)))
#define __REG8(x) (*((volatile u8 *)(x)))
#define CCM_BASE 0x53f80000
#define CCM_CCMR (CCM_BASE + 0x00)
#define CCM_PDR0 (CCM_BASE + 0x04)
#define CCM_PDR1 (CCM_BASE + 0x08)
#define CCM_RCSR (CCM_BASE + 0x0c)
#define CCM_MPCTL (CCM_BASE + 0x10)
#define CCM_UPCTL (CCM_BASE + 0x10)
#define CCM_SPCTL (CCM_BASE + 0x18)
#define CCM_COSR (CCM_BASE + 0x1C)
#define CCMR_MDS (1 << 7)
#define CCMR_SBYCS (1 << 4)
#define CCMR_MPE (1 << 3)
#define CCMR_PRCS_MASK (3 << 1)
#define CCMR_FPM (1 << 1)
#define CCMR_CKIH (2 << 1)
#define PDR0_CSI_PODF(x) (((x) & 0x1ff) << 23)
#define PDR0_PER_PODF(x) (((x) & 0x1f) << 16)
#define PDR0_HSP_PODF(x) (((x) & 0x7) << 11)
#define PDR0_NFC_PODF(x) (((x) & 0x7) << 8)
#define PDR0_IPG_PODF(x) (((x) & 0x3) << 6)
#define PDR0_MAX_PODF(x) (((x) & 0x7) << 3)
#define PDR0_MCU_PODF(x) ((x) & 0x7)
#define PLL_PD(x) (((x) & 0xf) << 26)
#define PLL_MFD(x) (((x) & 0x3ff) << 16)
#define PLL_MFI(x) (((x) & 0xf) << 10)
#define PLL_MFN(x) (((x) & 0x3ff) << 0)
#define WEIM_BASE 0xb8002000
#define CSCR_U(x) (WEIM_BASE + (x) * 0x10)
#define CSCR_L(x) (WEIM_BASE + 4 + (x) * 0x10)
#define CSCR_A(x) (WEIM_BASE + 8 + (x) * 0x10)
#define IOMUXC_BASE 0x43FAC000
#define IOMUXC_GPR (IOMUXC_BASE + 0x8)
#define IOMUXC_SW_MUX_CTL(x) (IOMUXC_BASE + 0xc + (x) * 4)
#define IOMUXC_SW_PAD_CTL(x) (IOMUXC_BASE + 0x154 + (x) * 4)
#define IPU_BASE 0x53fc0000
#define IPU_CONF IPU_BASE
#define IPU_CONF_PXL_ENDIAN (1<<8)
#define IPU_CONF_DU_EN (1<<7)
#define IPU_CONF_DI_EN (1<<6)
#define IPU_CONF_ADC_EN (1<<5)
#define IPU_CONF_SDC_EN (1<<4)
#define IPU_CONF_PF_EN (1<<3)
#define IPU_CONF_ROT_EN (1<<2)
#define IPU_CONF_IC_EN (1<<1)
#define IPU_CONF_SCI_EN (1<<0)
#define WDOG_BASE 0x53FDC000
/*
* Signal Multiplexing (IOMUX)
*/
/* bits in the SW_MUX_CTL registers */
#define MUX_CTL_OUT_GPIO_DR (0 << 4)
#define MUX_CTL_OUT_FUNC (1 << 4)
#define MUX_CTL_OUT_ALT1 (2 << 4)
#define MUX_CTL_OUT_ALT2 (3 << 4)
#define MUX_CTL_OUT_ALT3 (4 << 4)
#define MUX_CTL_OUT_ALT4 (5 << 4)
#define MUX_CTL_OUT_ALT5 (6 << 4)
#define MUX_CTL_OUT_ALT6 (7 << 4)
#define MUX_CTL_IN_NONE (0 << 0)
#define MUX_CTL_IN_GPIO (1 << 0)
#define MUX_CTL_IN_FUNC (2 << 0)
#define MUX_CTL_IN_ALT1 (4 << 0)
#define MUX_CTL_IN_ALT2 (8 << 0)
#define MUX_CTL_FUNC (MUX_CTL_OUT_FUNC | MUX_CTL_IN_FUNC)
#define MUX_CTL_ALT1 (MUX_CTL_OUT_ALT1 | MUX_CTL_IN_ALT1)
#define MUX_CTL_ALT2 (MUX_CTL_OUT_ALT2 | MUX_CTL_IN_ALT2)
#define MUX_CTL_GPIO (MUX_CTL_OUT_GPIO_DR | MUX_CTL_IN_GPIO)
/* Register offsets based on IOMUXC_BASE */
/* 0x00 .. 0x7b */
#define MUX_CTL_RTS1 0x7c
#define MUX_CTL_CTS1 0x7d
#define MUX_CTL_DTR_DCE1 0x7e
#define MUX_CTL_DSR_DCE1 0x7f
#define MUX_CTL_CSPI2_SCLK 0x80
#define MUX_CTL_CSPI2_SPI_RDY 0x81
#define MUX_CTL_RXD1 0x82
#define MUX_CTL_TXD1 0x83
#define MUX_CTL_CSPI2_MISO 0x84
/* 0x85 .. 0x8a */
#define MUX_CTL_CSPI2_MOSI 0x8b
/* The modes a specific pin can be in
* these macros can be used in mx31_gpio_mux() and have the form
* MUX_[contact name]__[pin function]
*/
#define MUX_RXD1__UART1_RXD_MUX ((MUX_CTL_FUNC << 8) | MUX_CTL_RXD1)
#define MUX_TXD1__UART1_TXD_MUX ((MUX_CTL_FUNC << 8) | MUX_CTL_TXD1)
#define MUX_RTS1__UART1_RTS_B ((MUX_CTL_FUNC << 8) | MUX_CTL_RTS1)
#define MUX_RTS1__UART1_CTS_B ((MUX_CTL_FUNC << 8) | MUX_CTL_CTS1)
#define MUX_CSPI2_MOSI__I2C2_SCL ((MUX_CTL_ALT1 << 8) | MUX_CTL_CSPI2_MOSI)
#define MUX_CSPI2_MISO__I2C2_SCL ((MUX_CTL_ALT1 << 8) | MUX_CTL_CSPI2_MISO)
#endif /* __ASM_ARCH_MX31_REGS_H */

32
include/asm-arm/arch-mx31/mx31.h
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/*
*
* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_MX31_H
#define __ASM_ARCH_MX31_H
u32 mx31_get_mpl_dpdgck_clk(void);
u32 mx31_get_mcu_main_clk(void);
u32 mx31_get_ipg_clk(void);
void mx31_gpio_mux(unsigned long mode);
#endif /* __ASM_ARCH_MX31_H */
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