projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8f590d45 | 1 | /* |
| 2 | * arch/arm/mach-spear6xx/spear6xx.c | |
| 3 | * | |
| 4 | * SPEAr6XX machines common source file | |
| 5 | * | |
| 6 | * Copyright (C) 2009 ST Microelectronics | |
| 7 | * Rajeev Kumar<rajeev-dlh.kumar@st.com> | |
| 8 | * | |
| 9652e8bd SR |
9 | * Copyright 2012 Stefan Roese <sr@denx.de> |
| 10 | * | |
| 8f590d45 | 11 | * This file is licensed under the terms of the GNU General Public |
| 12 | * License version 2. This program is licensed "as is" without any | |
| 13 | * warranty of any kind, whether express or implied. | |
| 14 | */ | |
| 15 | ||
| 9652e8bd SR |
16 | #include <linux/of.h> |
| 17 | #include <linux/of_address.h> | |
| 18 | #include <linux/of_irq.h> | |
| 19 | #include <linux/of_platform.h> | |
| 8f590d45 | 20 | #include <asm/hardware/vic.h> |
| 8f590d45 | 21 | #include <asm/mach/arch.h> |
| 8f590d45 | 22 | #include <mach/generic.h> |
| 02aa06bc | 23 | #include <mach/hardware.h> |
| 8f590d45 | 24 | |
| 25 | /* Following will create static virtual/physical mappings */ | |
| 26 | static struct map_desc spear6xx_io_desc[] __initdata = { | |
| 27 | { | |
| 28 | .virtual = VA_SPEAR6XX_ICM1_UART0_BASE, | |
| 29 | .pfn = __phys_to_pfn(SPEAR6XX_ICM1_UART0_BASE), | |
| 53821162 | 30 | .length = SZ_4K, |
| 8f590d45 | 31 | .type = MT_DEVICE |
| 32 | }, { | |
| 33 | .virtual = VA_SPEAR6XX_CPU_VIC_PRI_BASE, | |
| 34 | .pfn = __phys_to_pfn(SPEAR6XX_CPU_VIC_PRI_BASE), | |
| 53821162 | 35 | .length = SZ_4K, |
| 8f590d45 | 36 | .type = MT_DEVICE |
| 37 | }, { | |
| 38 | .virtual = VA_SPEAR6XX_CPU_VIC_SEC_BASE, | |
| 39 | .pfn = __phys_to_pfn(SPEAR6XX_CPU_VIC_SEC_BASE), | |
| 53821162 | 40 | .length = SZ_4K, |
| 8f590d45 | 41 | .type = MT_DEVICE |
| 42 | }, { | |
| 43 | .virtual = VA_SPEAR6XX_ICM3_SYS_CTRL_BASE, | |
| 44 | .pfn = __phys_to_pfn(SPEAR6XX_ICM3_SYS_CTRL_BASE), | |
| 53821162 | 45 | .length = SZ_4K, |
| 8f590d45 | 46 | .type = MT_DEVICE |
| 47 | }, { | |
| 48 | .virtual = VA_SPEAR6XX_ICM3_MISC_REG_BASE, | |
| 49 | .pfn = __phys_to_pfn(SPEAR6XX_ICM3_MISC_REG_BASE), | |
| 53821162 | 50 | .length = SZ_4K, |
| 8f590d45 | 51 | .type = MT_DEVICE |
| 52 | }, | |
| 53 | }; | |
| 54 | ||
| 55 | /* This will create static memory mapping for selected devices */ | |
| 56 | void __init spear6xx_map_io(void) | |
| 57 | { | |
| 58 | iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc)); | |
| 59 | ||
| 60 | /* This will initialize clock framework */ | |
| b997f6e2 | 61 | spear6xx_clk_init(); |
| 8f590d45 | 62 | } |
| 5c881d9a SH |
63 | |
| 64 | static void __init spear6xx_timer_init(void) | |
| 65 | { | |
| 66 | char pclk_name[] = "pll3_48m_clk"; | |
| 67 | struct clk *gpt_clk, *pclk; | |
| 68 | ||
| 69 | /* get the system timer clock */ | |
| 70 | gpt_clk = clk_get_sys("gpt0", NULL); | |
| 71 | if (IS_ERR(gpt_clk)) { | |
| 72 | pr_err("%s:couldn't get clk for gpt\n", __func__); | |
| 73 | BUG(); | |
| 74 | } | |
| 75 | ||
| 76 | /* get the suitable parent clock for timer*/ | |
| 77 | pclk = clk_get(NULL, pclk_name); | |
| 78 | if (IS_ERR(pclk)) { | |
| 79 | pr_err("%s:couldn't get %s as parent for gpt\n", | |
| 80 | __func__, pclk_name); | |
| 81 | BUG(); | |
| 82 | } | |
| 83 | ||
| 84 | clk_set_parent(gpt_clk, pclk); | |
| 85 | clk_put(gpt_clk); | |
| 86 | clk_put(pclk); | |
| 87 | ||
| 88 | spear_setup_timer(); | |
| 89 | } | |
| 90 | ||
| 91 | struct sys_timer spear6xx_timer = { | |
| 92 | .init = spear6xx_timer_init, | |
| 93 | }; | |
| 9652e8bd SR |
94 | |
| 95 | static void __init spear600_dt_init(void) | |
| 96 | { | |
| 97 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); | |
| 98 | } | |
| 99 | ||
| 100 | static const char *spear600_dt_board_compat[] = { | |
| 101 | "st,spear600", | |
| 102 | NULL | |
| 103 | }; | |
| 104 | ||
| 105 | static const struct of_device_id vic_of_match[] __initconst = { | |
| 106 | { .compatible = "arm,pl190-vic", .data = vic_of_init, }, | |
| 107 | { /* Sentinel */ } | |
| 108 | }; | |
| 109 | ||
| 110 | static void __init spear6xx_dt_init_irq(void) | |
| 111 | { | |
| 112 | of_irq_init(vic_of_match); | |
| 113 | } | |
| 114 | ||
| 115 | DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)") | |
| 116 | .map_io = spear6xx_map_io, | |
| 117 | .init_irq = spear6xx_dt_init_irq, | |
| 118 | .handle_irq = vic_handle_irq, | |
| 119 | .timer = &spear6xx_timer, | |
| 120 | .init_machine = spear600_dt_init, | |
| 121 | .restart = spear_restart, | |
| 122 | .dt_compat = spear600_dt_board_compat, | |
| 123 | MACHINE_END |