ARM: shmobile: Shared APMU SMP support code without DT
[deliverable/linux.git] / arch / arm / mach-shmobile / setup-r8a7790.c
CommitLineData
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1/*
2 * r8a7790 processor support
3 *
4 * Copyright (C) 2013 Renesas Solutions Corp.
5 * Copyright (C) 2013 Magnus Damm
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
c4a62a5f 21#include <linux/clocksource.h>
0468b2d6 22#include <linux/irq.h>
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23#include <linux/kernel.h>
24#include <linux/of_platform.h>
43ca9cbb 25#include <linux/platform_data/gpio-rcar.h>
8f5ec0a5 26#include <linux/platform_data/irq-renesas-irqc.h>
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27#include <linux/serial_sci.h>
28#include <linux/sh_timer.h>
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29#include <mach/common.h>
30#include <mach/irqs.h>
31#include <mach/r8a7790.h>
32#include <asm/mach/arch.h>
33
cde214a8 34static const struct resource pfc_resources[] __initconst = {
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35 DEFINE_RES_MEM(0xe6060000, 0x250),
36};
37
43ca9cbb 38#define R8A7790_GPIO(idx) \
cde214a8 39static const struct resource r8a7790_gpio##idx##_resources[] __initconst = { \
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40 DEFINE_RES_MEM(0xe6050000 + 0x1000 * (idx), 0x50), \
41 DEFINE_RES_IRQ(gic_spi(4 + (idx))), \
42}; \
43 \
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44static const struct gpio_rcar_config \
45r8a7790_gpio##idx##_platform_data __initconst = { \
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46 .gpio_base = 32 * (idx), \
47 .irq_base = 0, \
48 .number_of_pins = 32, \
49 .pctl_name = "pfc-r8a7790", \
d93906b8 50 .has_both_edge_trigger = 1, \
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51}; \
52
53R8A7790_GPIO(0);
54R8A7790_GPIO(1);
55R8A7790_GPIO(2);
56R8A7790_GPIO(3);
57R8A7790_GPIO(4);
58R8A7790_GPIO(5);
59
60#define r8a7790_register_gpio(idx) \
61 platform_device_register_resndata(&platform_bus, "gpio_rcar", idx, \
62 r8a7790_gpio##idx##_resources, \
63 ARRAY_SIZE(r8a7790_gpio##idx##_resources), \
64 &r8a7790_gpio##idx##_platform_data, \
65 sizeof(r8a7790_gpio##idx##_platform_data))
66
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67void __init r8a7790_pinmux_init(void)
68{
69 platform_device_register_simple("pfc-r8a7790", -1, pfc_resources,
70 ARRAY_SIZE(pfc_resources));
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71 r8a7790_register_gpio(0);
72 r8a7790_register_gpio(1);
73 r8a7790_register_gpio(2);
74 r8a7790_register_gpio(3);
75 r8a7790_register_gpio(4);
76 r8a7790_register_gpio(5);
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77}
78
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79#define SCIF_COMMON(scif_type, baseaddr, irq) \
80 .type = scif_type, \
81 .mapbase = baseaddr, \
82 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, \
83 .irqs = SCIx_IRQ_MUXED(irq)
84
85#define SCIFA_DATA(index, baseaddr, irq) \
86[index] = { \
87 SCIF_COMMON(PORT_SCIFA, baseaddr, irq), \
88 .scbrr_algo_id = SCBRR_ALGO_4, \
89 .scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE0, \
90}
91
92#define SCIFB_DATA(index, baseaddr, irq) \
93[index] = { \
94 SCIF_COMMON(PORT_SCIFB, baseaddr, irq), \
95 .scbrr_algo_id = SCBRR_ALGO_4, \
96 .scscr = SCSCR_RE | SCSCR_TE, \
97}
98
99#define SCIF_DATA(index, baseaddr, irq) \
100[index] = { \
101 SCIF_COMMON(PORT_SCIF, baseaddr, irq), \
102 .scbrr_algo_id = SCBRR_ALGO_2, \
c972f024 103 .scscr = SCSCR_RE | SCSCR_TE, \
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104}
105
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106#define HSCIF_DATA(index, baseaddr, irq) \
107[index] = { \
108 SCIF_COMMON(PORT_HSCIF, baseaddr, irq), \
109 .scbrr_algo_id = SCBRR_ALGO_6, \
110 .scscr = SCSCR_RE | SCSCR_TE, \
111}
112
113enum { SCIFA0, SCIFA1, SCIFB0, SCIFB1, SCIFB2, SCIFA2, SCIF0, SCIF1,
114 HSCIF0, HSCIF1 };
55d9fab2 115
cde214a8 116static const struct plat_sci_port scif[] __initconst = {
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117 SCIFA_DATA(SCIFA0, 0xe6c40000, gic_spi(144)), /* SCIFA0 */
118 SCIFA_DATA(SCIFA1, 0xe6c50000, gic_spi(145)), /* SCIFA1 */
119 SCIFB_DATA(SCIFB0, 0xe6c20000, gic_spi(148)), /* SCIFB0 */
120 SCIFB_DATA(SCIFB1, 0xe6c30000, gic_spi(149)), /* SCIFB1 */
121 SCIFB_DATA(SCIFB2, 0xe6ce0000, gic_spi(150)), /* SCIFB2 */
122 SCIFA_DATA(SCIFA2, 0xe6c60000, gic_spi(151)), /* SCIFA2 */
123 SCIF_DATA(SCIF0, 0xe6e60000, gic_spi(152)), /* SCIF0 */
124 SCIF_DATA(SCIF1, 0xe6e68000, gic_spi(153)), /* SCIF1 */
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125 HSCIF_DATA(HSCIF0, 0xe62c0000, gic_spi(154)), /* HSCIF0 */
126 HSCIF_DATA(HSCIF1, 0xe62c8000, gic_spi(155)), /* HSCIF1 */
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127};
128
129static inline void r8a7790_register_scif(int idx)
130{
131 platform_device_register_data(&platform_bus, "sh-sci", idx, &scif[idx],
132 sizeof(struct plat_sci_port));
133}
134
cde214a8 135static const struct renesas_irqc_config irqc0_data __initconst = {
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136 .irq_base = irq_pin(0), /* IRQ0 -> IRQ3 */
137};
138
cde214a8 139static const struct resource irqc0_resources[] __initconst = {
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140 DEFINE_RES_MEM(0xe61c0000, 0x200), /* IRQC Event Detector Block_0 */
141 DEFINE_RES_IRQ(gic_spi(0)), /* IRQ0 */
142 DEFINE_RES_IRQ(gic_spi(1)), /* IRQ1 */
143 DEFINE_RES_IRQ(gic_spi(2)), /* IRQ2 */
144 DEFINE_RES_IRQ(gic_spi(3)), /* IRQ3 */
145};
146
147#define r8a7790_register_irqc(idx) \
148 platform_device_register_resndata(&platform_bus, "renesas_irqc", \
149 idx, irqc##idx##_resources, \
150 ARRAY_SIZE(irqc##idx##_resources), \
151 &irqc##idx##_data, \
152 sizeof(struct renesas_irqc_config))
153
cde214a8 154static const struct resource thermal_resources[] __initconst = {
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155 DEFINE_RES_MEM(0xe61f0000, 0x14),
156 DEFINE_RES_MEM(0xe61f0100, 0x38),
157 DEFINE_RES_IRQ(gic_spi(69)),
158};
159
160#define r8a7790_register_thermal() \
161 platform_device_register_simple("rcar_thermal", -1, \
162 thermal_resources, \
163 ARRAY_SIZE(thermal_resources))
164
cde214a8 165static const struct sh_timer_config cmt00_platform_data __initconst = {
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166 .name = "CMT00",
167 .timer_bit = 0,
168 .clockevent_rating = 80,
169};
170
cde214a8 171static const struct resource cmt00_resources[] __initconst = {
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172 DEFINE_RES_MEM(0xffca0510, 0x0c),
173 DEFINE_RES_MEM(0xffca0500, 0x04),
174 DEFINE_RES_IRQ(gic_spi(142)), /* CMT0_0 */
175};
176
177#define r8a7790_register_cmt(idx) \
178 platform_device_register_resndata(&platform_bus, "sh_cmt", \
179 idx, cmt##idx##_resources, \
180 ARRAY_SIZE(cmt##idx##_resources), \
181 &cmt##idx##_platform_data, \
182 sizeof(struct sh_timer_config))
183
6dace67f 184void __init r8a7790_add_dt_devices(void)
0468b2d6 185{
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186 r8a7790_register_scif(SCIFA0);
187 r8a7790_register_scif(SCIFA1);
188 r8a7790_register_scif(SCIFB0);
189 r8a7790_register_scif(SCIFB1);
190 r8a7790_register_scif(SCIFB2);
191 r8a7790_register_scif(SCIFA2);
192 r8a7790_register_scif(SCIF0);
193 r8a7790_register_scif(SCIF1);
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194 r8a7790_register_scif(HSCIF0);
195 r8a7790_register_scif(HSCIF1);
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196 r8a7790_register_cmt(00);
197}
198
199void __init r8a7790_add_standard_devices(void)
200{
201 r8a7790_add_dt_devices();
8f5ec0a5 202 r8a7790_register_irqc(0);
0b8eeba4 203 r8a7790_register_thermal();
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204}
205
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206#define MODEMR 0xe6160060
207
208u32 __init r8a7790_read_mode_pins(void)
209{
210 void __iomem *modemr = ioremap_nocache(MODEMR, 4);
211 u32 mode;
212
213 BUG_ON(!modemr);
214 mode = ioread32(modemr);
215 iounmap(modemr);
216
217 return mode;
218}
219
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220#define CNTCR 0
221#define CNTFID0 0x20
222
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223void __init r8a7790_timer_init(void)
224{
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225#ifdef CONFIG_ARM_ARCH_TIMER
226 u32 mode = r8a7790_read_mode_pins();
227 void __iomem *base;
228 int extal_mhz = 0;
229 u32 freq;
230
231 /* At Linux boot time the r8a7790 arch timer comes up
232 * with the counter disabled. Moreover, it may also report
233 * a potentially incorrect fixed 13 MHz frequency. To be
234 * correct these registers need to be updated to use the
235 * frequency EXTAL / 2 which can be determined by the MD pins.
236 */
237
238 switch (mode & (MD(14) | MD(13))) {
239 case 0:
240 extal_mhz = 15;
241 break;
242 case MD(13):
243 extal_mhz = 20;
244 break;
245 case MD(14):
246 extal_mhz = 26;
247 break;
248 case MD(13) | MD(14):
249 extal_mhz = 30;
250 break;
251 }
252
253 /* The arch timer frequency equals EXTAL / 2 */
254 freq = extal_mhz * (1000000 / 2);
255
256 /* Remap "armgcnt address map" space */
257 base = ioremap(0xe6080000, PAGE_SIZE);
258
259 /* Update registers with correct frequency */
260 iowrite32(freq, base + CNTFID0);
261 asm volatile("mcr p15, 0, %0, c14, c0, 0" : : "r" (freq));
262
263 /* make sure arch timer is started by setting bit 0 of CNTCR */
264 iowrite32(1, base + CNTCR);
265 iounmap(base);
266#endif /* CONFIG_ARM_ARCH_TIMER */
ab5fdfd5 267
c4a62a5f 268 clocksource_of_init();
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269}
270
0efd7faa 271void __init r8a7790_init_early(void)
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272{
273#ifndef CONFIG_ARM_ARCH_TIMER
274 shmobile_setup_delay(1300, 2, 4); /* Cortex-A15 @ 1300MHz */
275#endif
276}
277
0468b2d6 278#ifdef CONFIG_USE_OF
0468b2d6 279
cde214a8 280static const char * const r8a7790_boards_compat_dt[] __initconst = {
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281 "renesas,r8a7790",
282 NULL,
283};
284
285DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
0efd7faa 286 .init_early = r8a7790_init_early,
ab5fdfd5 287 .init_time = r8a7790_timer_init,
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288 .dt_compat = r8a7790_boards_compat_dt,
289MACHINE_END
290#endif /* CONFIG_USE_OF */
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