diff options
Diffstat (limited to 'arch/arm/cpu/armv7/at91/at91sama5_devices.c')
| -rw-r--r-- | arch/arm/cpu/armv7/at91/at91sama5_devices.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/at91/at91sama5_devices.c b/arch/arm/cpu/armv7/at91/at91sama5_devices.c new file mode 100644 index 0000000000..167b9f5bb3 --- /dev/null +++ b/arch/arm/cpu/armv7/at91/at91sama5_devices.c @@ -0,0 +1,278 @@ +/* + * (C) Copyright 2007-2008 + * Stelian Pop <stelian@popies.net> + * Lead Tech Design <www.leadtechdesign.com> + * + * 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/at91sama5.h> +#include <asm/arch/at91_common.h> +#include <asm/arch/at91_pmc.h> +#include <asm/arch/clk.h> +#include <asm/arch/gpio.h> +#include <asm/io.h> + +/* + * if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all + * peripheral pins. Good to have if hardware is soldered optionally + * or in case of SPI no slave is selected. Avoid lines to float + * needlessly. Use a short local PUP define. + * + * Due to errata "TXD floats when CTS is inactive" pullups are always + * on for TXD pins. + */ +#ifdef CONFIG_AT91_GPIO_PULLUP +# define PUP CONFIG_AT91_GPIO_PULLUP +#else +# define PUP 0 +#endif + +#define CIDR 0x40 +#define EXID 0x44 + +unsigned int get_chip_id(void) +{ + return readl(ATMEL_BASE_DBGU + CIDR); +} + +unsigned int get_extension_chip_id(void) +{ + return readl(ATMEL_BASE_DBGU + EXID); +} + +unsigned int has_emac() +{ + return cpu_is_at91sama5d31() || cpu_is_at91sama5d35(); +} + +unsigned int has_gmac() +{ + return !cpu_is_at91sama5d31(); +} + +unsigned int has_lcdc() +{ + return !cpu_is_at91sama5d35(); +} + +char *get_cpu_name() +{ + unsigned int extension_id = get_extension_chip_id(); + + if (cpu_is_at91sama5()) + switch (extension_id) { + case ARCH_EXID_AT91SAMA5D31: + return CONFIG_SYS_AT91_D31_CPU_NAME; + case ARCH_EXID_AT91SAMA5D33: + return CONFIG_SYS_AT91_D33_CPU_NAME; + case ARCH_EXID_AT91SAMA5D34: + return CONFIG_SYS_AT91_D34_CPU_NAME; + case ARCH_EXID_AT91SAMA5D35: + return CONFIG_SYS_AT91_D35_CPU_NAME; + default: + return CONFIG_SYS_AT91_UNKNOWN_CPU; + } + else + return CONFIG_SYS_AT91_UNKNOWN_CPU; +} + +void at91_serial0_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTD, 18, 1); /* TXD0 */ + at91_set_a_periph(AT91_PIO_PORTD, 17, PUP); /* RXD0 */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_USART0); +} + +void at91_serial1_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTB, 28, 0); /* TXD1 */ + at91_set_a_periph(AT91_PIO_PORTB, 29, PUP); /* RXD1 */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_USART1); +} + +void at91_serial2_hw_init(void) +{ + at91_set_b_periph(AT91_PIO_PORTE, 26, 1); /* TXD2 */ + at91_set_b_periph(AT91_PIO_PORTE, 25, PUP); /* RXD2 */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_USART2); +} + +void at91_seriald_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTB, 30, 0); /* DRXD */ + at91_set_a_periph(AT91_PIO_PORTB, 31, 1); /* DTXD */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_SYS); +} + +#if defined(CONFIG_ATMEL_SPI) +void at91_spi0_hw_init(unsigned long cs_mask) +{ + at91_set_a_periph(AT91_PIO_PORTD, 10, 0); /* SPI0_MISO */ + at91_set_a_periph(AT91_PIO_PORTD, 11, 0); /* SPI0_MOSI */ + at91_set_a_periph(AT91_PIO_PORTD, 12, 0); /* SPI0_SPCK */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_SPI0); + + if (cs_mask & (1 << 0)) + at91_set_a_periph(AT91_PIO_PORTD, 13, 0); + if (cs_mask & (1 << 1)) + at91_set_b_periph(AT91_PIO_PORTD, 14, 0); + if (cs_mask & (1 << 2)) + at91_set_b_periph(AT91_PIO_PORTD, 15, 0); + if (cs_mask & (1 << 3)) + at91_set_b_periph(AT91_PIO_PORTD, 16, 0); + if (cs_mask & (1 << 4)) + at91_set_pio_output(AT91_PIO_PORTD, 13, 0); + if (cs_mask & (1 << 5)) + at91_set_pio_output(AT91_PIO_PORTD, 14, 0); + if (cs_mask & (1 << 6)) + at91_set_pio_output(AT91_PIO_PORTD, 15, 0); + if (cs_mask & (1 << 7)) + at91_set_pio_output(AT91_PIO_PORTD, 16, 0); +} +#endif + +#ifdef CONFIG_GENERIC_ATMEL_MCI +void at91_mci_hw_init(void) +{ + at91_set_pio_output(AT91_PIO_PORTB, 10, 0); /* MCI0 Power */ + + at91_set_a_periph(AT91_PIO_PORTD, 0, 0); /* MCI0 CMD */ + at91_set_a_periph(AT91_PIO_PORTD, 1, 0); /* MCI0 DA0 */ + at91_set_a_periph(AT91_PIO_PORTD, 2, 0); /* MCI0 DA1 */ + at91_set_a_periph(AT91_PIO_PORTD, 3, 0); /* MCI0 DA2 */ + at91_set_a_periph(AT91_PIO_PORTD, 4, 0); /* MCI0 DA3 */ +#ifdef CONFIG_ATMEL_MCI_8BIT + at91_set_a_periph(AT91_PIO_PORTD, 5, 0); /* MCI0 DA4 */ + at91_set_a_periph(AT91_PIO_PORTD, 6, 0); /* MCI0 DA5 */ + at91_set_a_periph(AT91_PIO_PORTD, 7, 0); /* MCI0 DA6 */ + at91_set_a_periph(AT91_PIO_PORTD, 8, 0); /* MCI0 DA7 */ +#endif + at91_set_a_periph(AT91_PIO_PORTD, 9, 0); /* MCI0 CLK */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_MCI0); + + /* Pin muxing for MCI1 */ + at91_set_pio_output(AT91_PIO_PORTB, 12, 0); /* MCI1 Power */ + + at91_set_a_periph(AT91_PIO_PORTB, 19, 0); /* MCI1 CMD */ + at91_set_a_periph(AT91_PIO_PORTB, 20, 0); /* MCI1 DA0 */ + at91_set_a_periph(AT91_PIO_PORTB, 21, 0); /* MCI1 DA1 */ + at91_set_a_periph(AT91_PIO_PORTB, 22, 0); /* MCI1 DA2 */ + at91_set_a_periph(AT91_PIO_PORTB, 23, 0); /* MCI1 DA3 */ + at91_set_a_periph(AT91_PIO_PORTB, 24, 0); /* MCI1 CLK */ +} +#endif + +#ifdef CONFIG_MACB +void at91_macb_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTC, 7, 0); /* ETXCK_EREFCK */ + at91_set_a_periph(AT91_PIO_PORTC, 5, 0); /* ERXDV */ + at91_set_a_periph(AT91_PIO_PORTC, 2, 0); /* ERX0 */ + at91_set_a_periph(AT91_PIO_PORTC, 3, 0); /* ERX1 */ + at91_set_a_periph(AT91_PIO_PORTC, 6, 0); /* ERXER */ + at91_set_a_periph(AT91_PIO_PORTC, 4, 0); /* ETXEN */ + at91_set_a_periph(AT91_PIO_PORTC, 0, 0); /* ETX0 */ + at91_set_a_periph(AT91_PIO_PORTC, 1, 0); /* ETX1 */ + at91_set_a_periph(AT91_PIO_PORTC, 9, 0); /* EMDIO */ + at91_set_a_periph(AT91_PIO_PORTC, 8, 0); /* EMDC */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_EMAC); +} +#endif + +#ifdef CONFIG_GMACB +void at91_gmacb_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTB, 0, 0); /* GTX0 */ + at91_set_a_periph(AT91_PIO_PORTB, 1, 0); /* GTX1 */ + at91_set_a_periph(AT91_PIO_PORTB, 2, 0); /* GTX2 */ + at91_set_a_periph(AT91_PIO_PORTB, 3, 0); /* GTX3 */ + at91_set_a_periph(AT91_PIO_PORTB, 4, 0); /* GRX0 */ + at91_set_a_periph(AT91_PIO_PORTB, 5, 0); /* GRX1 */ + at91_set_a_periph(AT91_PIO_PORTB, 6, 0); /* GRX2 */ + at91_set_a_periph(AT91_PIO_PORTB, 7, 0); /* GRX3 */ + at91_set_a_periph(AT91_PIO_PORTB, 8, 0); /* GTXCK */ + at91_set_a_periph(AT91_PIO_PORTB, 9, 0); /* GTXEN */ + + at91_set_a_periph(AT91_PIO_PORTB, 11, 0); /* GRXCK */ + at91_set_a_periph(AT91_PIO_PORTB, 13, 0); /* GRXER */ + + at91_set_a_periph(AT91_PIO_PORTB, 16, 0); /* GMDC */ + at91_set_a_periph(AT91_PIO_PORTB, 17, 0); /* GMDIO */ + at91_set_a_periph(AT91_PIO_PORTB, 18, 0); /* G125CK */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_GMAC); +} +#endif + +#ifdef CONFIG_LCD +void at91_lcd_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTA, 24, 0); /* LCDPWM */ + at91_set_a_periph(AT91_PIO_PORTA, 25, 0); /* LCDDISP */ + at91_set_a_periph(AT91_PIO_PORTA, 26, 0); /* LCDVSYNC */ + at91_set_a_periph(AT91_PIO_PORTA, 27, 0); /* LCDHSYNC */ + at91_set_a_periph(AT91_PIO_PORTA, 28, 0); /* LCDDOTCK */ + at91_set_a_periph(AT91_PIO_PORTA, 29, 0); /* LCDDEN */ + + at91_set_a_periph(AT91_PIO_PORTA, 0, 0); /* LCDD0 */ + at91_set_a_periph(AT91_PIO_PORTA, 1, 0); /* LCDD1 */ + at91_set_a_periph(AT91_PIO_PORTA, 2, 0); /* LCDD2 */ + at91_set_a_periph(AT91_PIO_PORTA, 3, 0); /* LCDD3 */ + at91_set_a_periph(AT91_PIO_PORTA, 4, 0); /* LCDD4 */ + at91_set_a_periph(AT91_PIO_PORTA, 5, 0); /* LCDD5 */ + at91_set_a_periph(AT91_PIO_PORTA, 6, 0); /* LCDD6 */ + at91_set_a_periph(AT91_PIO_PORTA, 7, 0); /* LCDD7 */ + at91_set_a_periph(AT91_PIO_PORTA, 8, 0); /* LCDD8 */ + at91_set_a_periph(AT91_PIO_PORTA, 9, 0); /* LCDD9 */ + at91_set_a_periph(AT91_PIO_PORTA, 10, 0); /* LCDD10 */ + at91_set_a_periph(AT91_PIO_PORTA, 11, 0); /* LCDD11 */ + at91_set_a_periph(AT91_PIO_PORTA, 12, 0); /* LCDD12 */ + at91_set_a_periph(AT91_PIO_PORTA, 13, 0); /* LCDD13 */ + at91_set_a_periph(AT91_PIO_PORTA, 14, 0); /* LCDD14 */ + at91_set_a_periph(AT91_PIO_PORTA, 15, 0); /* LCDD15 */ + at91_set_c_periph(AT91_PIO_PORTC, 14, 0); /* LCDD16 */ + at91_set_c_periph(AT91_PIO_PORTC, 13, 0); /* LCDD17 */ + at91_set_c_periph(AT91_PIO_PORTC, 12, 0); /* LCDD18 */ + at91_set_c_periph(AT91_PIO_PORTC, 11, 0); /* LCDD19 */ + at91_set_c_periph(AT91_PIO_PORTC, 10, 0); /* LCDD20 */ + at91_set_c_periph(AT91_PIO_PORTC, 15, 0); /* LCDD21 */ + at91_set_c_periph(AT91_PIO_PORTE, 27, 0); /* LCDD22 */ + at91_set_c_periph(AT91_PIO_PORTE, 28, 0); /* LCDD23 */ + + /* Enable clock */ + at91_periph_clk_enable(ATMEL_ID_LCDC); +} +#endif |