1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * ALPHAPROJECT AP-SH4A-3A Support. |
4 | * |
5 | * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd. |
6 | * Copyright (C) 2008 Yoshihiro Shimoda |
7 | * Copyright (C) 2009 Paul Mundt |
8 | */ |
9 | #include <linux/init.h> |
10 | #include <linux/platform_device.h> |
11 | #include <linux/io.h> |
12 | #include <linux/mtd/physmap.h> |
13 | #include <linux/regulator/fixed.h> |
14 | #include <linux/regulator/machine.h> |
15 | #include <linux/smsc911x.h> |
16 | #include <linux/irq.h> |
17 | #include <linux/clk.h> |
18 | #include <asm/machvec.h> |
19 | #include <linux/sizes.h> |
20 | #include <asm/clock.h> |
21 | |
22 | static struct mtd_partition nor_flash_partitions[] = { |
23 | { |
24 | .name = "loader" , |
25 | .offset = 0x00000000, |
26 | .size = 512 * 1024, |
27 | }, |
28 | { |
29 | .name = "bootenv" , |
30 | .offset = MTDPART_OFS_APPEND, |
31 | .size = 512 * 1024, |
32 | }, |
33 | { |
34 | .name = "kernel" , |
35 | .offset = MTDPART_OFS_APPEND, |
36 | .size = 4 * 1024 * 1024, |
37 | }, |
38 | { |
39 | .name = "data" , |
40 | .offset = MTDPART_OFS_APPEND, |
41 | .size = MTDPART_SIZ_FULL, |
42 | }, |
43 | }; |
44 | |
45 | static struct physmap_flash_data nor_flash_data = { |
46 | .width = 4, |
47 | .parts = nor_flash_partitions, |
48 | .nr_parts = ARRAY_SIZE(nor_flash_partitions), |
49 | }; |
50 | |
51 | static struct resource nor_flash_resources[] = { |
52 | [0] = { |
53 | .start = 0x00000000, |
54 | .end = 0x01000000 - 1, |
55 | .flags = IORESOURCE_MEM, |
56 | } |
57 | }; |
58 | |
59 | static struct platform_device nor_flash_device = { |
60 | .name = "physmap-flash" , |
61 | .dev = { |
62 | .platform_data = &nor_flash_data, |
63 | }, |
64 | .num_resources = ARRAY_SIZE(nor_flash_resources), |
65 | .resource = nor_flash_resources, |
66 | }; |
67 | |
68 | /* Dummy supplies, where voltage doesn't matter */ |
69 | static struct regulator_consumer_supply dummy_supplies[] = { |
70 | REGULATOR_SUPPLY("vddvario" , "smsc911x" ), |
71 | REGULATOR_SUPPLY("vdd33a" , "smsc911x" ), |
72 | }; |
73 | |
74 | static struct resource smsc911x_resources[] = { |
75 | [0] = { |
76 | .name = "smsc911x-memory" , |
77 | .start = 0xA4000000, |
78 | .end = 0xA4000000 + SZ_256 - 1, |
79 | .flags = IORESOURCE_MEM, |
80 | }, |
81 | [1] = { |
82 | .name = "smsc911x-irq" , |
83 | .start = evt2irq(0x200), |
84 | .end = evt2irq(0x200), |
85 | .flags = IORESOURCE_IRQ, |
86 | }, |
87 | }; |
88 | |
89 | static struct smsc911x_platform_config smsc911x_config = { |
90 | .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, |
91 | .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, |
92 | .flags = SMSC911X_USE_16BIT, |
93 | .phy_interface = PHY_INTERFACE_MODE_MII, |
94 | }; |
95 | |
96 | static struct platform_device smsc911x_device = { |
97 | .name = "smsc911x" , |
98 | .id = -1, |
99 | .num_resources = ARRAY_SIZE(smsc911x_resources), |
100 | .resource = smsc911x_resources, |
101 | .dev = { |
102 | .platform_data = &smsc911x_config, |
103 | }, |
104 | }; |
105 | |
106 | static struct platform_device *apsh4a3a_devices[] __initdata = { |
107 | &nor_flash_device, |
108 | &smsc911x_device, |
109 | }; |
110 | |
111 | static int __init apsh4a3a_devices_setup(void) |
112 | { |
113 | regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); |
114 | |
115 | return platform_add_devices(apsh4a3a_devices, |
116 | ARRAY_SIZE(apsh4a3a_devices)); |
117 | } |
118 | device_initcall(apsh4a3a_devices_setup); |
119 | |
120 | static int apsh4a3a_clk_init(void) |
121 | { |
122 | struct clk *clk; |
123 | int ret; |
124 | |
125 | clk = clk_get(NULL, id: "extal" ); |
126 | if (IS_ERR(ptr: clk)) |
127 | return PTR_ERR(ptr: clk); |
128 | ret = clk_set_rate(clk, rate: 33333000); |
129 | clk_put(clk); |
130 | |
131 | return ret; |
132 | } |
133 | |
134 | /* Initialize the board */ |
135 | static void __init apsh4a3a_setup(char **cmdline_p) |
136 | { |
137 | printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n" ); |
138 | } |
139 | |
140 | static void __init apsh4a3a_init_irq(void) |
141 | { |
142 | plat_irq_setup_pins(IRQ_MODE_IRQ7654); |
143 | } |
144 | |
145 | /* Return the board specific boot mode pin configuration */ |
146 | static int apsh4a3a_mode_pins(void) |
147 | { |
148 | int value = 0; |
149 | |
150 | /* These are the factory default settings of SW1 and SW2. |
151 | * If you change these dip switches then you will need to |
152 | * adjust the values below as well. |
153 | */ |
154 | value &= ~MODE_PIN0; /* Clock Mode 16 */ |
155 | value &= ~MODE_PIN1; |
156 | value &= ~MODE_PIN2; |
157 | value &= ~MODE_PIN3; |
158 | value |= MODE_PIN4; |
159 | value &= ~MODE_PIN5; /* 16-bit Area0 bus width */ |
160 | value |= MODE_PIN6; /* Area 0 SRAM interface */ |
161 | value |= MODE_PIN7; |
162 | value |= MODE_PIN8; /* Little Endian */ |
163 | value |= MODE_PIN9; /* Master Mode */ |
164 | value |= MODE_PIN10; /* Crystal resonator */ |
165 | value |= MODE_PIN11; /* Display Unit */ |
166 | value |= MODE_PIN12; |
167 | value &= ~MODE_PIN13; /* 29-bit address mode */ |
168 | value |= MODE_PIN14; /* No PLL step-up */ |
169 | |
170 | return value; |
171 | } |
172 | |
173 | /* |
174 | * The Machine Vector |
175 | */ |
176 | static struct sh_machine_vector mv_apsh4a3a __initmv = { |
177 | .mv_name = "AP-SH4A-3A" , |
178 | .mv_setup = apsh4a3a_setup, |
179 | .mv_clk_init = apsh4a3a_clk_init, |
180 | .mv_init_irq = apsh4a3a_init_irq, |
181 | .mv_mode_pins = apsh4a3a_mode_pins, |
182 | }; |
183 | |