xref: /openbmc/linux/arch/sh/boards/board-sh7785lcr.c (revision 4bdc0d67)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Renesas Technology Corp. R0P7785LC0011RL Support.
4  *
5  * Copyright (C) 2008  Yoshihiro Shimoda
6  * Copyright (C) 2009  Paul Mundt
7  */
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/sm501.h>
11 #include <linux/sm501-regs.h>
12 #include <linux/fb.h>
13 #include <linux/mtd/physmap.h>
14 #include <linux/delay.h>
15 #include <linux/interrupt.h>
16 #include <linux/i2c.h>
17 #include <linux/platform_data/i2c-pca-platform.h>
18 #include <linux/i2c-algo-pca.h>
19 #include <linux/usb/r8a66597.h>
20 #include <linux/sh_intc.h>
21 #include <linux/irq.h>
22 #include <linux/io.h>
23 #include <linux/clk.h>
24 #include <linux/errno.h>
25 #include <linux/gpio/machine.h>
26 #include <mach/sh7785lcr.h>
27 #include <cpu/sh7785.h>
28 #include <asm/heartbeat.h>
29 #include <asm/clock.h>
30 #include <asm/bl_bit.h>
31 
32 /*
33  * NOTE: This board has 2 physical memory maps.
34  *	 Please look at include/asm-sh/sh7785lcr.h or hardware manual.
35  */
36 static struct resource heartbeat_resource = {
37 	.start	= PLD_LEDCR,
38 	.end	= PLD_LEDCR,
39 	.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
40 };
41 
42 static struct platform_device heartbeat_device = {
43 	.name		= "heartbeat",
44 	.id		= -1,
45 	.num_resources	= 1,
46 	.resource	= &heartbeat_resource,
47 };
48 
49 static struct mtd_partition nor_flash_partitions[] = {
50 	{
51 		.name		= "loader",
52 		.offset		= 0x00000000,
53 		.size		= 512 * 1024,
54 	},
55 	{
56 		.name		= "bootenv",
57 		.offset		= MTDPART_OFS_APPEND,
58 		.size		= 512 * 1024,
59 	},
60 	{
61 		.name		= "kernel",
62 		.offset		= MTDPART_OFS_APPEND,
63 		.size		= 4 * 1024 * 1024,
64 	},
65 	{
66 		.name		= "data",
67 		.offset		= MTDPART_OFS_APPEND,
68 		.size		= MTDPART_SIZ_FULL,
69 	},
70 };
71 
72 static struct physmap_flash_data nor_flash_data = {
73 	.width		= 4,
74 	.parts		= nor_flash_partitions,
75 	.nr_parts	= ARRAY_SIZE(nor_flash_partitions),
76 };
77 
78 static struct resource nor_flash_resources[] = {
79 	[0]	= {
80 		.start	= NOR_FLASH_ADDR,
81 		.end	= NOR_FLASH_ADDR + NOR_FLASH_SIZE - 1,
82 		.flags	= IORESOURCE_MEM,
83 	}
84 };
85 
86 static struct platform_device nor_flash_device = {
87 	.name		= "physmap-flash",
88 	.dev		= {
89 		.platform_data	= &nor_flash_data,
90 	},
91 	.num_resources	= ARRAY_SIZE(nor_flash_resources),
92 	.resource	= nor_flash_resources,
93 };
94 
95 static struct r8a66597_platdata r8a66597_data = {
96 	.xtal = R8A66597_PLATDATA_XTAL_12MHZ,
97 	.vif = 1,
98 };
99 
100 static struct resource r8a66597_usb_host_resources[] = {
101 	[0] = {
102 		.start	= R8A66597_ADDR,
103 		.end	= R8A66597_ADDR + R8A66597_SIZE - 1,
104 		.flags	= IORESOURCE_MEM,
105 	},
106 	[1] = {
107 		.start	= evt2irq(0x240),
108 		.end	= evt2irq(0x240),
109 		.flags	= IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
110 	},
111 };
112 
113 static struct platform_device r8a66597_usb_host_device = {
114 	.name		= "r8a66597_hcd",
115 	.id		= -1,
116 	.dev = {
117 		.dma_mask		= NULL,
118 		.coherent_dma_mask	= 0xffffffff,
119 		.platform_data		= &r8a66597_data,
120 	},
121 	.num_resources	= ARRAY_SIZE(r8a66597_usb_host_resources),
122 	.resource	= r8a66597_usb_host_resources,
123 };
124 
125 static struct resource sm501_resources[] = {
126 	[0]	= {
127 		.start	= SM107_MEM_ADDR,
128 		.end	= SM107_MEM_ADDR + SM107_MEM_SIZE - 1,
129 		.flags	= IORESOURCE_MEM,
130 	},
131 	[1]	= {
132 		.start	= SM107_REG_ADDR,
133 		.end	= SM107_REG_ADDR + SM107_REG_SIZE - 1,
134 		.flags	= IORESOURCE_MEM,
135 	},
136 	[2]	= {
137 		.start	= evt2irq(0x340),
138 		.flags	= IORESOURCE_IRQ,
139 	},
140 };
141 
142 static struct fb_videomode sm501_default_mode_crt = {
143 	.pixclock	= 35714,	/* 28MHz */
144 	.xres		= 640,
145 	.yres		= 480,
146 	.left_margin	= 105,
147 	.right_margin	= 16,
148 	.upper_margin	= 33,
149 	.lower_margin	= 10,
150 	.hsync_len	= 39,
151 	.vsync_len	= 2,
152 	.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
153 };
154 
155 static struct fb_videomode sm501_default_mode_pnl = {
156 	.pixclock	= 40000,	/* 25MHz */
157 	.xres		= 640,
158 	.yres		= 480,
159 	.left_margin	= 2,
160 	.right_margin	= 16,
161 	.upper_margin	= 33,
162 	.lower_margin	= 10,
163 	.hsync_len	= 39,
164 	.vsync_len	= 2,
165 	.sync		= 0,
166 };
167 
168 static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
169 	.def_bpp	= 16,
170 	.def_mode	= &sm501_default_mode_pnl,
171 	.flags		= SM501FB_FLAG_USE_INIT_MODE |
172 			  SM501FB_FLAG_USE_HWCURSOR |
173 			  SM501FB_FLAG_USE_HWACCEL |
174 			  SM501FB_FLAG_DISABLE_AT_EXIT |
175 			  SM501FB_FLAG_PANEL_NO_VBIASEN,
176 };
177 
178 static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
179 	.def_bpp	= 16,
180 	.def_mode	= &sm501_default_mode_crt,
181 	.flags		= SM501FB_FLAG_USE_INIT_MODE |
182 			  SM501FB_FLAG_USE_HWCURSOR |
183 			  SM501FB_FLAG_USE_HWACCEL |
184 			  SM501FB_FLAG_DISABLE_AT_EXIT,
185 };
186 
187 static struct sm501_platdata_fb sm501_fb_pdata = {
188 	.fb_route	= SM501_FB_OWN,
189 	.fb_crt		= &sm501_pdata_fbsub_crt,
190 	.fb_pnl		= &sm501_pdata_fbsub_pnl,
191 };
192 
193 static struct sm501_initdata sm501_initdata = {
194 	.gpio_high	= {
195 		.set	= 0x00001fe0,
196 		.mask	= 0x0,
197 	},
198 	.devices	= 0,
199 	.mclk		= 84 * 1000000,
200 	.m1xclk		= 112 * 1000000,
201 };
202 
203 static struct sm501_platdata sm501_platform_data = {
204 	.init		= &sm501_initdata,
205 	.fb		= &sm501_fb_pdata,
206 };
207 
208 static struct platform_device sm501_device = {
209 	.name		= "sm501",
210 	.id		= -1,
211 	.dev		= {
212 		.platform_data	= &sm501_platform_data,
213 	},
214 	.num_resources	= ARRAY_SIZE(sm501_resources),
215 	.resource	= sm501_resources,
216 };
217 
218 static struct resource i2c_proto_resources[] = {
219 	[0] = {
220 		.start	= PCA9564_PROTO_32BIT_ADDR,
221 		.end	= PCA9564_PROTO_32BIT_ADDR + PCA9564_SIZE - 1,
222 		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
223 	},
224 	[1] = {
225 		.start	= evt2irq(0x380),
226 		.end	= evt2irq(0x380),
227 		.flags	= IORESOURCE_IRQ,
228 	},
229 };
230 
231 static struct resource i2c_resources[] = {
232 	[0] = {
233 		.start	= PCA9564_ADDR,
234 		.end	= PCA9564_ADDR + PCA9564_SIZE - 1,
235 		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
236 	},
237 	[1] = {
238 		.start	= evt2irq(0x380),
239 		.end	= evt2irq(0x380),
240 		.flags	= IORESOURCE_IRQ,
241 	},
242 };
243 
244 static struct gpiod_lookup_table i2c_gpio_table = {
245 	.dev_id = "i2c.0",
246 	.table = {
247 		GPIO_LOOKUP("pfc-sh7757", 0, "reset-gpios", GPIO_ACTIVE_LOW),
248 		{ },
249 	},
250 };
251 
252 static struct i2c_pca9564_pf_platform_data i2c_platform_data = {
253 	.i2c_clock_speed	= I2C_PCA_CON_330kHz,
254 	.timeout		= HZ,
255 };
256 
257 static struct platform_device i2c_device = {
258 	.name		= "i2c-pca-platform",
259 	.id		= -1,
260 	.dev		= {
261 		.platform_data	= &i2c_platform_data,
262 	},
263 	.num_resources	= ARRAY_SIZE(i2c_resources),
264 	.resource	= i2c_resources,
265 };
266 
267 static struct platform_device *sh7785lcr_devices[] __initdata = {
268 	&heartbeat_device,
269 	&nor_flash_device,
270 	&r8a66597_usb_host_device,
271 	&sm501_device,
272 	&i2c_device,
273 };
274 
275 static struct i2c_board_info __initdata sh7785lcr_i2c_devices[] = {
276 	{
277 		I2C_BOARD_INFO("r2025sd", 0x32),
278 	},
279 };
280 
sh7785lcr_devices_setup(void)281 static int __init sh7785lcr_devices_setup(void)
282 {
283 	i2c_register_board_info(0, sh7785lcr_i2c_devices,
284 				ARRAY_SIZE(sh7785lcr_i2c_devices));
285 
286 	if (mach_is_sh7785lcr_pt()) {
287 		i2c_device.resource = i2c_proto_resources;
288 		i2c_device.num_resources = ARRAY_SIZE(i2c_proto_resources);
289 	}
290 
291 	gpiod_add_lookup_table(&i2c_gpio_table);
292 	return platform_add_devices(sh7785lcr_devices,
293 				    ARRAY_SIZE(sh7785lcr_devices));
294 }
295 device_initcall(sh7785lcr_devices_setup);
296 
297 /* Initialize IRQ setting */
init_sh7785lcr_IRQ(void)298 void __init init_sh7785lcr_IRQ(void)
299 {
300 	plat_irq_setup_pins(IRQ_MODE_IRQ7654);
301 	plat_irq_setup_pins(IRQ_MODE_IRQ3210);
302 }
303 
sh7785lcr_clk_init(void)304 static int sh7785lcr_clk_init(void)
305 {
306 	struct clk *clk;
307 	int ret;
308 
309 	clk = clk_get(NULL, "extal");
310 	if (IS_ERR(clk))
311 		return PTR_ERR(clk);
312 	ret = clk_set_rate(clk, 33333333);
313 	clk_put(clk);
314 
315 	return ret;
316 }
317 
sh7785lcr_power_off(void)318 static void sh7785lcr_power_off(void)
319 {
320 	unsigned char *p;
321 
322 	p = ioremap(PLD_POFCR, PLD_POFCR + 1);
323 	if (!p) {
324 		printk(KERN_ERR "%s: ioremap error.\n", __func__);
325 		return;
326 	}
327 	*p = 0x01;
328 	iounmap(p);
329 	set_bl_bit();
330 	while (1)
331 		cpu_relax();
332 }
333 
334 /* Initialize the board */
sh7785lcr_setup(char ** cmdline_p)335 static void __init sh7785lcr_setup(char **cmdline_p)
336 {
337 	void __iomem *sm501_reg;
338 
339 	printk(KERN_INFO "Renesas Technology Corp. R0P7785LC0011RL support.\n");
340 
341 	pm_power_off = sh7785lcr_power_off;
342 
343 	/* sm501 DRAM configuration */
344 	sm501_reg = ioremap(SM107_REG_ADDR, SM501_DRAM_CONTROL);
345 	if (!sm501_reg) {
346 		printk(KERN_ERR "%s: ioremap error.\n", __func__);
347 		return;
348 	}
349 
350 	writel(0x000307c2, sm501_reg + SM501_DRAM_CONTROL);
351 	iounmap(sm501_reg);
352 }
353 
354 /* Return the board specific boot mode pin configuration */
sh7785lcr_mode_pins(void)355 static int sh7785lcr_mode_pins(void)
356 {
357 	int value = 0;
358 
359 	/* These are the factory default settings of S1 and S2.
360 	 * If you change these dip switches then you will need to
361 	 * adjust the values below as well.
362 	 */
363 	value |= MODE_PIN4; /* Clock Mode 16 */
364 	value |= MODE_PIN5; /* 32-bit Area0 bus width */
365 	value |= MODE_PIN6; /* 32-bit Area0 bus width */
366 	value |= MODE_PIN7; /* Area 0 SRAM interface [fixed] */
367 	value |= MODE_PIN8; /* Little Endian */
368 	value |= MODE_PIN9; /* Master Mode */
369 	value |= MODE_PIN14; /* No PLL step-up */
370 
371 	return value;
372 }
373 
374 /*
375  * The Machine Vector
376  */
377 static struct sh_machine_vector mv_sh7785lcr __initmv = {
378 	.mv_name		= "SH7785LCR",
379 	.mv_setup		= sh7785lcr_setup,
380 	.mv_clk_init		= sh7785lcr_clk_init,
381 	.mv_init_irq		= init_sh7785lcr_IRQ,
382 	.mv_mode_pins		= sh7785lcr_mode_pins,
383 };
384 
385