/* * arch/arm/mach-spear6xx/spear6xx.c * * SPEAr6XX machines common source file * * Copyright (C) 2009 ST Microelectronics * Rajeev Kumar * * Copyright 2012 Stefan Roese * * 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. */ #include #include #include #include #include #include #include #include #include #include #include "pl080.h" #include "generic.h" #include #include /* dmac device registration */ static struct pl08x_channel_data spear600_dma_info[] = { { .bus_id = "ssp1_rx", .min_signal = 0, .max_signal = 0, .muxval = 0, .periph_buses = PL08X_AHB1, }, { .bus_id = "ssp1_tx", .min_signal = 1, .max_signal = 1, .muxval = 0, .periph_buses = PL08X_AHB1, }, { .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 = "uart1_rx", .min_signal = 4, .max_signal = 4, .muxval = 0, .periph_buses = PL08X_AHB1, }, { .bus_id = "uart1_tx", .min_signal = 5, .max_signal = 5, .muxval = 0, .periph_buses = PL08X_AHB1, }, { .bus_id = "ssp2_rx", .min_signal = 6, .max_signal = 6, .muxval = 0, .periph_buses = PL08X_AHB2, }, { .bus_id = "ssp2_tx", .min_signal = 7, .max_signal = 7, .muxval = 0, .periph_buses = PL08X_AHB2, }, { .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_AHB2, }, { .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 = "ras0_rx", .min_signal = 0, .max_signal = 0, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras0_tx", .min_signal = 1, .max_signal = 1, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras1_rx", .min_signal = 2, .max_signal = 2, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras1_tx", .min_signal = 3, .max_signal = 3, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras2_rx", .min_signal = 4, .max_signal = 4, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras2_tx", .min_signal = 5, .max_signal = 5, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras3_rx", .min_signal = 6, .max_signal = 6, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras3_tx", .min_signal = 7, .max_signal = 7, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras4_rx", .min_signal = 8, .max_signal = 8, .muxval = 1, .periph_buses = PL08X_AHB1, }, { .bus_id = "ras4_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, }, { .bus_id = "ext0_rx", .min_signal = 0, .max_signal = 0, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext0_tx", .min_signal = 1, .max_signal = 1, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext1_rx", .min_signal = 2, .max_signal = 2, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext1_tx", .min_signal = 3, .max_signal = 3, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext2_rx", .min_signal = 4, .max_signal = 4, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext2_tx", .min_signal = 5, .max_signal = 5, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext3_rx", .min_signal = 6, .max_signal = 6, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext3_tx", .min_signal = 7, .max_signal = 7, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext4_rx", .min_signal = 8, .max_signal = 8, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext4_tx", .min_signal = 9, .max_signal = 9, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext5_rx", .min_signal = 10, .max_signal = 10, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext5_tx", .min_signal = 11, .max_signal = 11, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext6_rx", .min_signal = 12, .max_signal = 12, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext6_tx", .min_signal = 13, .max_signal = 13, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext7_rx", .min_signal = 14, .max_signal = 14, .muxval = 2, .periph_buses = PL08X_AHB2, }, { .bus_id = "ext7_tx", .min_signal = 15, .max_signal = 15, .muxval = 2, .periph_buses = PL08X_AHB2, }, }; static struct pl08x_platform_data spear6xx_pl080_plat_data = { .memcpy_channel = { .bus_id = "memcpy", .cctl_memcpy = (PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \ PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \ PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \ PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \ PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \ PL080_CONTROL_PROT_SYS), }, .lli_buses = PL08X_AHB1, .mem_buses = PL08X_AHB1, .get_xfer_signal = pl080_get_signal, .put_xfer_signal = pl080_put_signal, .slave_channels = spear600_dma_info, .num_slave_channels = ARRAY_SIZE(spear600_dma_info), }; /* * Following will create 16MB static virtual/physical mappings * PHYSICAL VIRTUAL * 0xF0000000 0xF0000000 * 0xF1000000 0xF1000000 * 0xD0000000 0xFD000000 * 0xFC000000 0xFC000000 */ struct map_desc spear6xx_io_desc[] __initdata = { { .virtual = (unsigned long)VA_SPEAR6XX_ML_CPU_BASE, .pfn = __phys_to_pfn(SPEAR_ICM3_ML1_2_BASE), .length = 2 * SZ_16M, .type = MT_DEVICE }, { .virtual = (unsigned long)VA_SPEAR_ICM1_2_BASE, .pfn = __phys_to_pfn(SPEAR_ICM1_2_BASE), .length = SZ_16M, .type = MT_DEVICE }, { .virtual = (unsigned long)VA_SPEAR_ICM3_SMI_CTRL_BASE, .pfn = __phys_to_pfn(SPEAR_ICM3_SMI_CTRL_BASE), .length = SZ_16M, .type = MT_DEVICE }, }; /* This will create static memory mapping for selected devices */ void __init spear6xx_map_io(void) { iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc)); } void __init spear6xx_timer_init(void) { char pclk_name[] = "pll3_clk"; struct clk *gpt_clk, *pclk; spear6xx_clk_init(MISC_BASE); /* get the system timer clock */ gpt_clk = clk_get_sys("gpt0", NULL); if (IS_ERR(gpt_clk)) { pr_err("%s:couldn't get clk for gpt\n", __func__); BUG(); } /* get the suitable parent clock for timer*/ pclk = clk_get(NULL, pclk_name); if (IS_ERR(pclk)) { pr_err("%s:couldn't get %s as parent for gpt\n", __func__, pclk_name); BUG(); } clk_set_parent(gpt_clk, pclk); clk_put(gpt_clk); clk_put(pclk); spear_setup_of_timer(); } /* Add auxdata to pass platform data */ struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL, &spear6xx_pl080_plat_data), {} }; static void __init spear600_dt_init(void) { of_platform_populate(NULL, of_default_bus_match_table, spear6xx_auxdata_lookup, NULL); } static const char *spear600_dt_board_compat[] = { "st,spear600", NULL }; DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)") .map_io = spear6xx_map_io, .init_time = spear6xx_timer_init, .init_machine = spear600_dt_init, .restart = spear_restart, .dt_compat = spear600_dt_board_compat, MACHINE_END