X-Git-Url: http://git.ipfire.org/?p=people%2Fms%2Fu-boot.git;a=blobdiff_plain;f=drivers%2Fserial%2Fserial_mxc.c;h=cce80a8559e2527f15502cd9e4e07fbb0557403e;hp=0899e9bc812647f0d3ed4f87792adaf4f7f41f66;hb=61366b71a8950aae48ce9e00295a16cf65ac4f02;hpb=a943472c23d8ff71888aed033cc8b51c7bfb282a diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c index 0899e9bc81..cce80a8559 100644 --- a/drivers/serial/serial_mxc.c +++ b/drivers/serial/serial_mxc.c @@ -1,151 +1,186 @@ /* * (c) 2007 Sascha Hauer * - * 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 - * + * SPDX-License-Identifier: GPL-2.0+ */ #include +#include +#include #include #include #include +#include #include #include -#define __REG(x) (*((volatile u32 *)(x))) +/* 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 URXD_RX_DATA (0xFF) +#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_ADNIMP (1<<7) /* Autobaud Detection Not Improved */ +#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_RFDIV_SHF 7 /* Reference freq divider shift */ +#define RFDIV 4 /* divide input clock by 2 */ +#define UFCR_DCEDTE (1<<6) /* DTE mode select */ +#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_SOFTRS (1<<0) /* Software reset */ +#define TXTL 2 /* reset default */ +#define RXTL 1 /* reset default */ -#ifndef CONFIG_MXC_UART_BASE -#error "define CONFIG_MXC_UART_BASE to use the MXC UART driver" -#endif +DECLARE_GLOBAL_DATA_PTR; -#define UART_PHYS CONFIG_MXC_UART_BASE +struct mxc_uart { + u32 rxd; + u32 spare0[15]; -#ifdef CONFIG_SERIAL_MULTI -#warning "MXC driver does not support MULTI serials." -#endif + u32 txd; + u32 spare1[15]; -/* 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) */ + u32 cr1; + u32 cr2; + u32 cr3; + u32 cr4; -/* 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 URXD_RX_DATA (0xFF) -#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 */ + u32 fcr; + u32 sr1; + u32 sr2; + u32 esc; -DECLARE_GLOBAL_DATA_PTR; + u32 tim; + u32 bir; + u32 bmr; + u32 brc; + + u32 onems; + u32 ts; +}; + +static void _mxc_serial_init(struct mxc_uart *base) +{ + writel(0, &base->cr1); + writel(0, &base->cr2); + + while (!(readl(&base->cr2) & UCR2_SRST)); + + writel(0x704 | UCR3_ADNIMP, &base->cr3); + writel(0x8000, &base->cr4); + writel(0x2b, &base->esc); + writel(0, &base->tim); + + writel(0, &base->ts); +} + +static void _mxc_serial_setbrg(struct mxc_uart *base, unsigned long clk, + unsigned long baudrate, bool use_dte) +{ + u32 tmp; + + tmp = RFDIV << UFCR_RFDIV_SHF; + if (use_dte) + tmp |= UFCR_DCEDTE; + else + tmp |= (TXTL << UFCR_TXTL_SHF) | (RXTL << UFCR_RXTL_SHF); + writel(tmp, &base->fcr); + + writel(0xf, &base->bir); + writel(clk / (2 * baudrate), &base->bmr); + + writel(UCR2_WS | UCR2_IRTS | UCR2_RXEN | UCR2_TXEN | UCR2_SRST, + &base->cr2); + writel(UCR1_UARTEN, &base->cr1); +} + +#ifndef CONFIG_DM_SERIAL + +#ifndef CONFIG_MXC_UART_BASE +#error "define CONFIG_MXC_UART_BASE to use the MXC UART driver" +#endif + +#define mxc_base ((struct mxc_uart *)CONFIG_MXC_UART_BASE) static void mxc_serial_setbrg(void) { @@ -154,86 +189,58 @@ static void mxc_serial_setbrg(void) 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); - + _mxc_serial_setbrg(mxc_base, clk, gd->baudrate, false); } static int mxc_serial_getc(void) { - while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY) + while (readl(&mxc_base->ts) & UTS_RXEMPTY) WATCHDOG_RESET(); - return (__REG(UART_PHYS + URXD) & URXD_RX_DATA); /* mask out status from upper word */ + return (readl(&mxc_base->rxd) & URXD_RX_DATA); /* mask out status from upper word */ } static void mxc_serial_putc(const char c) { - __REG(UART_PHYS + UTXD) = c; + /* If \n, also do \r */ + if (c == '\n') + serial_putc('\r'); + + writel(c, &mxc_base->txd); /* wait for transmitter to be ready */ - while (!(__REG(UART_PHYS + UTS) & UTS_TXEMPTY)) + while (!(readl(&mxc_base->ts) & UTS_TXEMPTY)) WATCHDOG_RESET(); - - /* If \n, also do \r */ - if (c == '\n') - serial_putc ('\r'); } -/* - * Test whether a character is in the RX buffer - */ +/* Test whether a character is in the RX buffer */ static int mxc_serial_tstc(void) { /* If receive fifo is empty, return false */ - if (__REG(UART_PHYS + UTS) & UTS_RXEMPTY) + if (readl(&mxc_base->ts) & UTS_RXEMPTY) return 0; return 1; } -static void mxc_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. - * */ static int mxc_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; + _mxc_serial_init(mxc_base); serial_setbrg(); - __REG(UART_PHYS + UCR2) = UCR2_WS | UCR2_IRTS | UCR2_RXEN | UCR2_TXEN | UCR2_SRST; - - __REG(UART_PHYS + UCR1) = UCR1_UARTEN; - return 0; } -#ifdef CONFIG_SERIAL_MULTI static struct serial_device mxc_serial_drv = { .name = "mxc_serial", .start = mxc_serial_init, .stop = NULL, .setbrg = mxc_serial_setbrg, .putc = mxc_serial_putc, - .puts = mxc_serial_puts, + .puts = default_serial_puts, .getc = mxc_serial_getc, .tstc = mxc_serial_tstc, }; @@ -247,34 +254,132 @@ __weak struct serial_device *default_serial_console(void) { return &mxc_serial_drv; } -#else -int serial_init(void) +#endif + +#ifdef CONFIG_DM_SERIAL + +int mxc_serial_setbrg(struct udevice *dev, int baudrate) { - return mxc_serial_init(); + struct mxc_serial_platdata *plat = dev->platdata; + u32 clk = imx_get_uartclk(); + + _mxc_serial_setbrg(plat->reg, clk, baudrate, plat->use_dte); + + return 0; } -void serial_setbrg(void) +static int mxc_serial_probe(struct udevice *dev) { - mxc_serial_setbrg(); + struct mxc_serial_platdata *plat = dev->platdata; + + _mxc_serial_init(plat->reg); + + return 0; } -void serial_putc(const char c) +static int mxc_serial_getc(struct udevice *dev) { - mxc_serial_putc(c); + struct mxc_serial_platdata *plat = dev->platdata; + struct mxc_uart *const uart = plat->reg; + + if (readl(&uart->ts) & UTS_RXEMPTY) + return -EAGAIN; + + return readl(&uart->rxd) & URXD_RX_DATA; } -void serial_puts(const char *s) +static int mxc_serial_putc(struct udevice *dev, const char ch) { - mxc_serial_puts(s); + struct mxc_serial_platdata *plat = dev->platdata; + struct mxc_uart *const uart = plat->reg; + + if (!(readl(&uart->ts) & UTS_TXEMPTY)) + return -EAGAIN; + + writel(ch, &uart->txd); + + return 0; } -int serial_getc(void) +static int mxc_serial_pending(struct udevice *dev, bool input) { - return mxc_serial_getc(); + struct mxc_serial_platdata *plat = dev->platdata; + struct mxc_uart *const uart = plat->reg; + uint32_t sr2 = readl(&uart->sr2); + + if (input) + return sr2 & USR2_RDR ? 1 : 0; + else + return sr2 & USR2_TXDC ? 0 : 1; } -int serial_tstc(void) +static const struct dm_serial_ops mxc_serial_ops = { + .putc = mxc_serial_putc, + .pending = mxc_serial_pending, + .getc = mxc_serial_getc, + .setbrg = mxc_serial_setbrg, +}; + +#if CONFIG_IS_ENABLED(OF_CONTROL) +static int mxc_serial_ofdata_to_platdata(struct udevice *dev) { - return mxc_serial_tstc(); + struct mxc_serial_platdata *plat = dev->platdata; + fdt_addr_t addr; + + addr = devfdt_get_addr(dev); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + + plat->reg = (struct mxc_uart *)addr; + + plat->use_dte = fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev), + "fsl,dte-mode"); + return 0; +} + +static const struct udevice_id mxc_serial_ids[] = { + { .compatible = "fsl,imx6ul-uart" }, + { .compatible = "fsl,imx7d-uart" }, + { } +}; +#endif + +U_BOOT_DRIVER(serial_mxc) = { + .name = "serial_mxc", + .id = UCLASS_SERIAL, +#if CONFIG_IS_ENABLED(OF_CONTROL) + .of_match = mxc_serial_ids, + .ofdata_to_platdata = mxc_serial_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct mxc_serial_platdata), +#endif + .probe = mxc_serial_probe, + .ops = &mxc_serial_ops, + .flags = DM_FLAG_PRE_RELOC, +}; +#endif + +#ifdef CONFIG_DEBUG_UART_MXC +#include + +static inline void _debug_uart_init(void) +{ + struct mxc_uart *base = (struct mxc_uart *)CONFIG_DEBUG_UART_BASE; + + _mxc_serial_init(base); + _mxc_serial_setbrg(base, CONFIG_DEBUG_UART_CLOCK, + CONFIG_BAUDRATE, false); } + +static inline void _debug_uart_putc(int ch) +{ + struct mxc_uart *base = (struct mxc_uart *)CONFIG_DEBUG_UART_BASE; + + while (!(readl(&base->ts) & UTS_TXEMPTY)) + WATCHDOG_RESET(); + + writel(ch, &base->txd); +} + +DEBUG_UART_FUNCS + #endif