1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * arch/arm/mach-spear3xx/spear3xx.c
4 *
5 * SPEAr3XX machines common source file
6 *
7 * Copyright (C) 2009-2012 ST Microelectronics
8 * Viresh Kumar <vireshk@kernel.org>
9 */
10
11 #define pr_fmt(fmt) "SPEAr3xx: " fmt
12
13 #include <linux/amba/pl022.h>
14 #include <linux/amba/pl080.h>
15 #include <linux/clk.h>
16 #include <linux/io.h>
17 #include <asm/mach/map.h>
18 #include "pl080.h"
19 #include "generic.h"
20 #include <mach/spear.h>
21 #include <mach/misc_regs.h>
22
23 /* ssp device registration */
24 struct pl022_ssp_controller pl022_plat_data = {
25 .bus_id = 0,
26 .enable_dma = 1,
27 .dma_filter = pl08x_filter_id,
28 .dma_tx_param = "ssp0_tx",
29 .dma_rx_param = "ssp0_rx",
30 };
31
32 /* dmac device registration */
33 struct pl08x_platform_data pl080_plat_data = {
34 .memcpy_burst_size = PL08X_BURST_SZ_16,
35 .memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
36 .memcpy_prot_buff = true,
37 .memcpy_prot_cache = true,
38 .lli_buses = PL08X_AHB1,
39 .mem_buses = PL08X_AHB1,
40 .get_xfer_signal = pl080_get_signal,
41 .put_xfer_signal = pl080_put_signal,
42 };
43
44 /*
45 * Following will create 16MB static virtual/physical mappings
46 * PHYSICAL VIRTUAL
47 * 0xD0000000 0xFD000000
48 * 0xFC000000 0xFC000000
49 */
50 struct map_desc spear3xx_io_desc[] __initdata = {
51 {
52 .virtual = (unsigned long)VA_SPEAR_ICM1_2_BASE,
53 .pfn = __phys_to_pfn(SPEAR_ICM1_2_BASE),
54 .length = SZ_16M,
55 .type = MT_DEVICE
56 }, {
57 .virtual = (unsigned long)VA_SPEAR_ICM3_SMI_CTRL_BASE,
58 .pfn = __phys_to_pfn(SPEAR_ICM3_SMI_CTRL_BASE),
59 .length = SZ_16M,
60 .type = MT_DEVICE
61 },
62 };
63
64 /* This will create static memory mapping for selected devices */
spear3xx_map_io(void)65 void __init spear3xx_map_io(void)
66 {
67 iotable_init(spear3xx_io_desc, ARRAY_SIZE(spear3xx_io_desc));
68 }
69
spear3xx_timer_init(void)70 void __init spear3xx_timer_init(void)
71 {
72 char pclk_name[] = "pll3_clk";
73 struct clk *gpt_clk, *pclk;
74
75 spear3xx_clk_init(MISC_BASE, VA_SPEAR320_SOC_CONFIG_BASE);
76
77 /* get the system timer clock */
78 gpt_clk = clk_get_sys("gpt0", NULL);
79 if (IS_ERR(gpt_clk)) {
80 pr_err("%s:couldn't get clk for gpt\n", __func__);
81 BUG();
82 }
83
84 /* get the suitable parent clock for timer*/
85 pclk = clk_get(NULL, pclk_name);
86 if (IS_ERR(pclk)) {
87 pr_err("%s:couldn't get %s as parent for gpt\n",
88 __func__, pclk_name);
89 BUG();
90 }
91
92 clk_set_parent(gpt_clk, pclk);
93 clk_put(gpt_clk);
94 clk_put(pclk);
95
96 spear_setup_of_timer();
97 }
98