diff options
Diffstat (limited to 'kernel/arch/arm/mach-spear/spear310.c')
| -rw-r--r-- | kernel/arch/arm/mach-spear/spear310.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-spear/spear310.c b/kernel/arch/arm/mach-spear/spear310.c new file mode 100644 index 000000000..ed2029db3 --- /dev/null +++ b/kernel/arch/arm/mach-spear/spear310.c @@ -0,0 +1,260 @@ +/* + * arch/arm/mach-spear3xx/spear310.c + * + * SPEAr310 machine source file + * + * Copyright (C) 2009-2012 ST Microelectronics + * Viresh Kumar <viresh.linux@gmail.com> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#define pr_fmt(fmt) "SPEAr310: " fmt + +#include <linux/amba/pl08x.h> +#include <linux/amba/serial.h> +#include <linux/of_platform.h> +#include <asm/mach/arch.h> +#include "generic.h" +#include <mach/spear.h> + +#define SPEAR310_UART1_BASE UL(0xB2000000) +#define SPEAR310_UART2_BASE UL(0xB2080000) +#define SPEAR310_UART3_BASE UL(0xB2100000) +#define SPEAR310_UART4_BASE UL(0xB2180000) +#define SPEAR310_UART5_BASE UL(0xB2200000) + +/* DMAC platform data's slave info */ +struct pl08x_channel_data spear310_dma_info[] = { + { + .bus_id = "uart0_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart0_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ssp0_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "i2c_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "irda", + .min_signal = 12, + .max_signal = 12, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "adc", + .min_signal = 13, + .max_signal = 13, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "to_jpeg", + .min_signal = 14, + .max_signal = 14, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "from_jpeg", + .min_signal = 15, + .max_signal = 15, + .muxval = 0, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart1_rx", + .min_signal = 0, + .max_signal = 0, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart1_tx", + .min_signal = 1, + .max_signal = 1, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart2_rx", + .min_signal = 2, + .max_signal = 2, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart2_tx", + .min_signal = 3, + .max_signal = 3, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart3_rx", + .min_signal = 4, + .max_signal = 4, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart3_tx", + .min_signal = 5, + .max_signal = 5, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart4_rx", + .min_signal = 6, + .max_signal = 6, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart4_tx", + .min_signal = 7, + .max_signal = 7, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart5_rx", + .min_signal = 8, + .max_signal = 8, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "uart5_tx", + .min_signal = 9, + .max_signal = 9, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_rx", + .min_signal = 10, + .max_signal = 10, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras5_tx", + .min_signal = 11, + .max_signal = 11, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_rx", + .min_signal = 12, + .max_signal = 12, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras6_tx", + .min_signal = 13, + .max_signal = 13, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_rx", + .min_signal = 14, + .max_signal = 14, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, { + .bus_id = "ras7_tx", + .min_signal = 15, + .max_signal = 15, + .muxval = 1, + .periph_buses = PL08X_AHB1, + }, +}; + +/* uart devices plat data */ +static struct amba_pl011_data spear310_uart_data[] = { + { + .dma_filter = pl08x_filter_id, + .dma_tx_param = "uart1_tx", + .dma_rx_param = "uart1_rx", + }, { + .dma_filter = pl08x_filter_id, + .dma_tx_param = "uart2_tx", + .dma_rx_param = "uart2_rx", + }, { + .dma_filter = pl08x_filter_id, + .dma_tx_param = "uart3_tx", + .dma_rx_param = "uart3_rx", + }, { + .dma_filter = pl08x_filter_id, + .dma_tx_param = "uart4_tx", + .dma_rx_param = "uart4_rx", + }, { + .dma_filter = pl08x_filter_id, + .dma_tx_param = "uart5_tx", + .dma_rx_param = "uart5_rx", + }, +}; + +/* Add SPEAr310 auxdata to pass platform data */ +static struct of_dev_auxdata spear310_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL, + &pl022_plat_data), + OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL, + &pl080_plat_data), + OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART1_BASE, NULL, + &spear310_uart_data[0]), + OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART2_BASE, NULL, + &spear310_uart_data[1]), + OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART3_BASE, NULL, + &spear310_uart_data[2]), + OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART4_BASE, NULL, + &spear310_uart_data[3]), + OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART5_BASE, NULL, + &spear310_uart_data[4]), + {} +}; + +static void __init spear310_dt_init(void) +{ + pl080_plat_data.slave_channels = spear310_dma_info; + pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear310_dma_info); + + of_platform_populate(NULL, of_default_bus_match_table, + spear310_auxdata_lookup, NULL); +} + +static const char * const spear310_dt_board_compat[] = { + "st,spear310", + "st,spear310-evb", + NULL, +}; + +static void __init spear310_map_io(void) +{ + spear3xx_map_io(); +} + +DT_MACHINE_START(SPEAR310_DT, "ST SPEAr310 SoC with Flattened Device Tree") + .map_io = spear310_map_io, + .init_time = spear3xx_timer_init, + .init_machine = spear310_dt_init, + .restart = spear_restart, + .dt_compat = spear310_dt_board_compat, +MACHINE_END |