mach-mxs.c revision 3143bbb42b3d27a5f799c97c84fb7a4a1de88f91 
1/*
2 * Copyright 2012 Freescale Semiconductor, Inc.
3 * Copyright 2012 Linaro Ltd.
4 *
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
8 *
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
11 */
12
13#include <linux/clk.h>
14#include <linux/clkdev.h>
15#include <linux/err.h>
16#include <linux/init.h>
17#include <linux/init.h>
18#include <linux/irqdomain.h>
19#include <linux/micrel_phy.h>
20#include <linux/mxsfb.h>
21#include <linux/of_irq.h>
22#include <linux/of_platform.h>
23#include <linux/phy.h>
24#include <asm/mach/arch.h>
25#include <asm/mach/time.h>
26#include <mach/common.h>
27
28static struct fb_videomode mx23evk_video_modes[] = {
29	{
30		.name		= "Samsung-LMS430HF02",
31		.refresh	= 60,
32		.xres		= 480,
33		.yres		= 272,
34		.pixclock	= 108096, /* picosecond (9.2 MHz) */
35		.left_margin	= 15,
36		.right_margin	= 8,
37		.upper_margin	= 12,
38		.lower_margin	= 4,
39		.hsync_len	= 1,
40		.vsync_len	= 1,
41		.sync		= FB_SYNC_DATA_ENABLE_HIGH_ACT |
42				  FB_SYNC_DOTCLK_FAILING_ACT,
43	},
44};
45
46static struct fb_videomode mx28evk_video_modes[] = {
47	{
48		.name		= "Seiko-43WVF1G",
49		.refresh	= 60,
50		.xres		= 800,
51		.yres		= 480,
52		.pixclock	= 29851, /* picosecond (33.5 MHz) */
53		.left_margin	= 89,
54		.right_margin	= 164,
55		.upper_margin	= 23,
56		.lower_margin	= 10,
57		.hsync_len	= 10,
58		.vsync_len	= 10,
59		.sync		= FB_SYNC_DATA_ENABLE_HIGH_ACT |
60				  FB_SYNC_DOTCLK_FAILING_ACT,
61	},
62};
63
64static struct fb_videomode m28evk_video_modes[] = {
65	{
66		.name		= "Ampire AM-800480R2TMQW-T01H",
67		.refresh	= 60,
68		.xres		= 800,
69		.yres		= 480,
70		.pixclock	= 30066, /* picosecond (33.26 MHz) */
71		.left_margin	= 0,
72		.right_margin	= 256,
73		.upper_margin	= 0,
74		.lower_margin	= 45,
75		.hsync_len	= 1,
76		.vsync_len	= 1,
77		.sync		= FB_SYNC_DATA_ENABLE_HIGH_ACT,
78	},
79};
80
81static struct mxsfb_platform_data mxsfb_pdata __initdata;
82
83static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = {
84	OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata),
85	OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata),
86	{ /* sentinel */ }
87};
88
89static int __init mxs_icoll_add_irq_domain(struct device_node *np,
90				struct device_node *interrupt_parent)
91{
92	irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL);
93
94	return 0;
95}
96
97static int __init mxs_gpio_add_irq_domain(struct device_node *np,
98				struct device_node *interrupt_parent)
99{
100	static int gpio_irq_base = MXS_GPIO_IRQ_START;
101
102	irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
103	gpio_irq_base += 32;
104
105	return 0;
106}
107
108static const struct of_device_id mxs_irq_match[] __initconst = {
109	{ .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },
110	{ .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, },
111	{ /* sentinel */ }
112};
113
114static void __init mxs_dt_init_irq(void)
115{
116	icoll_init_irq();
117	of_irq_init(mxs_irq_match);
118}
119
120static void __init imx23_timer_init(void)
121{
122	mx23_clocks_init();
123}
124
125static struct sys_timer imx23_timer = {
126	.init = imx23_timer_init,
127};
128
129static void __init imx28_timer_init(void)
130{
131	mx28_clocks_init();
132}
133
134static struct sys_timer imx28_timer = {
135	.init = imx28_timer_init,
136};
137
138enum mac_oui {
139	OUI_FSL,
140	OUI_DENX,
141};
142
143static void __init update_fec_mac_prop(enum mac_oui oui)
144{
145	struct device_node *np, *from = NULL;
146	struct property *oldmac, *newmac;
147	const u32 *ocotp = mxs_get_ocotp();
148	u8 *macaddr;
149	u32 val;
150	int i;
151
152	for (i = 0; i < 2; i++) {
153		np = of_find_compatible_node(from, NULL, "fsl,imx28-fec");
154		if (!np)
155			return;
156		from = np;
157
158		newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);
159		if (!newmac)
160			return;
161		newmac->value = newmac + 1;
162		newmac->length = 6;
163
164		newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
165		if (!newmac->name) {
166			kfree(newmac);
167			return;
168		}
169
170		/*
171		 * OCOTP only stores the last 4 octets for each mac address,
172		 * so hard-code OUI here.
173		 */
174		macaddr = newmac->value;
175		switch (oui) {
176		case OUI_FSL:
177			macaddr[0] = 0x00;
178			macaddr[1] = 0x04;
179			macaddr[2] = 0x9f;
180			break;
181		case OUI_DENX:
182			macaddr[0] = 0xc0;
183			macaddr[1] = 0xe5;
184			macaddr[2] = 0x4e;
185			break;
186		}
187		val = ocotp[i];
188		macaddr[3] = (val >> 16) & 0xff;
189		macaddr[4] = (val >> 8) & 0xff;
190		macaddr[5] = (val >> 0) & 0xff;
191
192		oldmac = of_find_property(np, newmac->name, NULL);
193		if (oldmac)
194			prom_update_property(np, newmac, oldmac);
195		else
196			prom_add_property(np, newmac);
197	}
198}
199
200static void __init imx23_evk_init(void)
201{
202	mxsfb_pdata.mode_list = mx23evk_video_modes;
203	mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
204	mxsfb_pdata.default_bpp = 32;
205	mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
206}
207
208static inline void enable_clk_enet_out(void)
209{
210	struct clk *clk = clk_get_sys("enet_out", NULL);
211
212	if (!IS_ERR(clk))
213		clk_prepare_enable(clk);
214}
215
216static void __init imx28_evk_init(void)
217{
218	enable_clk_enet_out();
219	update_fec_mac_prop(OUI_FSL);
220
221	mxsfb_pdata.mode_list = mx28evk_video_modes;
222	mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
223	mxsfb_pdata.default_bpp = 32;
224	mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
225}
226
227static void __init m28evk_init(void)
228{
229	enable_clk_enet_out();
230	update_fec_mac_prop(OUI_DENX);
231
232	mxsfb_pdata.mode_list = m28evk_video_modes;
233	mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes);
234	mxsfb_pdata.default_bpp = 16;
235	mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
236}
237
238static int apx4devkit_phy_fixup(struct phy_device *phy)
239{
240	phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
241	return 0;
242}
243
244static void __init apx4devkit_init(void)
245{
246	enable_clk_enet_out();
247
248	if (IS_BUILTIN(CONFIG_PHYLIB))
249		phy_register_fixup_for_uid(PHY_ID_KS8051, MICREL_PHY_ID_MASK,
250					   apx4devkit_phy_fixup);
251}
252
253static void __init mxs_machine_init(void)
254{
255	if (of_machine_is_compatible("fsl,imx28-evk"))
256		imx28_evk_init();
257	else if (of_machine_is_compatible("fsl,imx23-evk"))
258		imx23_evk_init();
259	else if (of_machine_is_compatible("denx,m28evk"))
260		m28evk_init();
261	else if (of_machine_is_compatible("bluegiga,apx4devkit"))
262		apx4devkit_init();
263
264	of_platform_populate(NULL, of_default_bus_match_table,
265			     mxs_auxdata_lookup, NULL);
266}
267
268static const char *imx23_dt_compat[] __initdata = {
269	"fsl,imx23-evk",
270	"olimex,imx23-olinuxino",
271	"fsl,imx23",
272	NULL,
273};
274
275static const char *imx28_dt_compat[] __initdata = {
276	"bluegiga,apx4devkit",
277	"crystalfontz,cfa10036",
278	"denx,m28evk",
279	"fsl,imx28-evk",
280	"fsl,imx28",
281	NULL,
282};
283
284DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
285	.map_io		= mx23_map_io,
286	.init_irq	= mxs_dt_init_irq,
287	.timer		= &imx23_timer,
288	.init_machine	= mxs_machine_init,
289	.dt_compat	= imx23_dt_compat,
290	.restart	= mxs_restart,
291MACHINE_END
292
293DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
294	.map_io		= mx28_map_io,
295	.init_irq	= mxs_dt_init_irq,
296	.timer		= &imx28_timer,
297	.init_machine	= mxs_machine_init,
298	.dt_compat	= imx28_dt_compat,
299	.restart	= mxs_restart,
300MACHINE_END
301