1 /*
2 * arch/arm/mach-spear3xx/spear3xx.c
3 *
4 * SPEAr3XX machines common source file
5 *
6 * Copyright (C) 2009-2012 ST Microelectronics
7 * Viresh Kumar <vireshk@kernel.org>
8 *
9 * This file is licensed under the terms of the GNU General Public
10 * License version 2. This program is licensed "as is" without any
11 * warranty of any kind, whether express or implied.
12 */
13
14 #define pr_fmt(fmt) "SPEAr3xx: " fmt
15
16 #include <linux/amba/pl022.h>
17 #include <linux/amba/pl080.h>
18 #include <linux/clk.h>
19 #include <linux/io.h>
20 #include <asm/mach/map.h>
21 #include "pl080.h"
22 #include "generic.h"
23 #include <mach/spear.h>
24 #include <mach/misc_regs.h>
25
26 /* ssp device registration */
27 struct pl022_ssp_controller pl022_plat_data = {
28 .bus_id = 0,
29 .enable_dma = 1,
30 .dma_filter = pl08x_filter_id,
31 .dma_tx_param = "ssp0_tx",
32 .dma_rx_param = "ssp0_rx",
33 };
34
35 /* dmac device registration */
36 struct pl08x_platform_data pl080_plat_data = {
37 .memcpy_burst_size = PL08X_BURST_SZ_16,
38 .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
39 .memcpy_prot_buff = true,
40 .memcpy_prot_cache = true,
41 .lli_buses = PL08X_AHB1,
42 .mem_buses = PL08X_AHB1,
43 .get_xfer_signal = pl080_get_signal,
44 .put_xfer_signal = pl080_put_signal,
45 };
46
47 /*
48 * Following will create 16MB static virtual/physical mappings
49 * PHYSICAL VIRTUAL
50 * 0xD0000000 0xFD000000
51 * 0xFC000000 0xFC000000
52 */
53 struct map_desc spear3xx_io_desc[] __initdata = {
54 {
55 .virtual = (unsigned long)VA_SPEAR_ICM1_2_BASE,
56 .pfn = __phys_to_pfn(SPEAR_ICM1_2_BASE),
57 .length = SZ_16M,
58 .type = MT_DEVICE
59 }, {
60 .virtual = (unsigned long)VA_SPEAR_ICM3_SMI_CTRL_BASE,
61 .pfn = __phys_to_pfn(SPEAR_ICM3_SMI_CTRL_BASE),
62 .length = SZ_16M,
63 .type = MT_DEVICE
64 },
65 };
66
67 /* This will create static memory mapping for selected devices */
spear3xx_map_io(void)68 void __init spear3xx_map_io(void)
69 {
70 iotable_init(spear3xx_io_desc, ARRAY_SIZE(spear3xx_io_desc));
71 }
72
spear3xx_timer_init(void)73 void __init spear3xx_timer_init(void)
74 {
75 char pclk_name[] = "pll3_clk";
76 struct clk *gpt_clk, *pclk;
77
78 spear3xx_clk_init(MISC_BASE, VA_SPEAR320_SOC_CONFIG_BASE);
79
80 /* get the system timer clock */
81 gpt_clk = clk_get_sys("gpt0", NULL);
82 if (IS_ERR(gpt_clk)) {
83 pr_err("%s:couldn't get clk for gpt\n", __func__);
84 BUG();
85 }
86
87 /* get the suitable parent clock for timer*/
88 pclk = clk_get(NULL, pclk_name);
89 if (IS_ERR(pclk)) {
90 pr_err("%s:couldn't get %s as parent for gpt\n",
91 __func__, pclk_name);
92 BUG();
93 }
94
95 clk_set_parent(gpt_clk, pclk);
96 clk_put(gpt_clk);
97 clk_put(pclk);
98
99 spear_setup_of_timer();
100 }
101