2 * Copyright 2012 Freescale Semiconductor, Inc.
3 * Copyright 2012 Linaro Ltd.
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:
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
13 #include <linux/clk.h>
14 #include <linux/clkdev.h>
15 #include <linux/can/platform/flexcan.h>
16 #include <linux/delay.h>
17 #include <linux/err.h>
18 #include <linux/gpio.h>
19 #include <linux/init.h>
20 #include <linux/irqdomain.h>
21 #include <linux/micrel_phy.h>
22 #include <linux/mxsfb.h>
23 #include <linux/of_irq.h>
24 #include <linux/of_platform.h>
25 #include <linux/phy.h>
26 #include <linux/pinctrl/consumer.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/time.h>
29 #include <mach/common.h>
30 #include <mach/digctl.h>
33 static struct fb_videomode mx23evk_video_modes[] = {
35 .name = "Samsung-LMS430HF02",
39 .pixclock = 108096, /* picosecond (9.2 MHz) */
46 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
47 FB_SYNC_DOTCLK_FAILING_ACT,
51 static struct fb_videomode mx28evk_video_modes[] = {
53 .name = "Seiko-43WVF1G",
57 .pixclock = 29851, /* picosecond (33.5 MHz) */
64 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
65 FB_SYNC_DOTCLK_FAILING_ACT,
69 static struct fb_videomode m28evk_video_modes[] = {
71 .name = "Ampire AM-800480R2TMQW-T01H",
75 .pixclock = 30066, /* picosecond (33.26 MHz) */
82 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT,
86 static struct fb_videomode apx4devkit_video_modes[] = {
88 .name = "HannStar PJ70112A",
92 .pixclock = 33333, /* picosecond (30.00 MHz) */
99 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
100 FB_SYNC_DATA_ENABLE_HIGH_ACT |
101 FB_SYNC_DOTCLK_FAILING_ACT,
105 static struct mxsfb_platform_data mxsfb_pdata __initdata;
108 * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
110 #define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
112 static int flexcan0_en, flexcan1_en;
114 static void mx28evk_flexcan_switch(void)
116 if (flexcan0_en || flexcan1_en)
117 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
119 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
122 static void mx28evk_flexcan0_switch(int enable)
124 flexcan0_en = enable;
125 mx28evk_flexcan_switch();
128 static void mx28evk_flexcan1_switch(int enable)
130 flexcan1_en = enable;
131 mx28evk_flexcan_switch();
134 static struct flexcan_platform_data flexcan_pdata[2];
136 static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = {
137 OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata),
138 OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata),
139 OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80032000, NULL, &flexcan_pdata[0]),
140 OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80034000, NULL, &flexcan_pdata[1]),
144 static int __init mxs_icoll_add_irq_domain(struct device_node *np,
145 struct device_node *interrupt_parent)
147 irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL);
152 static int __init mxs_gpio_add_irq_domain(struct device_node *np,
153 struct device_node *interrupt_parent)
155 static int gpio_irq_base = MXS_GPIO_IRQ_START;
157 irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
163 static const struct of_device_id mxs_irq_match[] __initconst = {
164 { .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },
165 { .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, },
169 static void __init mxs_dt_init_irq(void)
172 of_irq_init(mxs_irq_match);
175 static void __init imx23_timer_init(void)
180 static struct sys_timer imx23_timer = {
181 .init = imx23_timer_init,
184 static void __init imx28_timer_init(void)
189 static struct sys_timer imx28_timer = {
190 .init = imx28_timer_init,
198 static void __init update_fec_mac_prop(enum mac_oui oui)
200 struct device_node *np, *from = NULL;
201 struct property *newmac;
202 const u32 *ocotp = mxs_get_ocotp();
207 for (i = 0; i < 2; i++) {
208 np = of_find_compatible_node(from, NULL, "fsl,imx28-fec");
213 newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);
216 newmac->value = newmac + 1;
219 newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
226 * OCOTP only stores the last 4 octets for each mac address,
227 * so hard-code OUI here.
229 macaddr = newmac->value;
243 macaddr[3] = (val >> 16) & 0xff;
244 macaddr[4] = (val >> 8) & 0xff;
245 macaddr[5] = (val >> 0) & 0xff;
247 prom_update_property(np, newmac);
251 static void __init imx23_evk_init(void)
253 mxsfb_pdata.mode_list = mx23evk_video_modes;
254 mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
255 mxsfb_pdata.default_bpp = 32;
256 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
259 static inline void enable_clk_enet_out(void)
261 struct clk *clk = clk_get_sys("enet_out", NULL);
264 clk_prepare_enable(clk);
267 static void __init imx28_evk_init(void)
269 enable_clk_enet_out();
270 update_fec_mac_prop(OUI_FSL);
272 mxsfb_pdata.mode_list = mx28evk_video_modes;
273 mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
274 mxsfb_pdata.default_bpp = 32;
275 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
277 mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
280 static void __init imx28_evk_post_init(void)
282 if (!gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
284 flexcan_pdata[0].transceiver_switch = mx28evk_flexcan0_switch;
285 flexcan_pdata[1].transceiver_switch = mx28evk_flexcan1_switch;
289 static void __init m28evk_init(void)
291 mxsfb_pdata.mode_list = m28evk_video_modes;
292 mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes);
293 mxsfb_pdata.default_bpp = 16;
294 mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
297 static int apx4devkit_phy_fixup(struct phy_device *phy)
299 phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
303 static void __init apx4devkit_init(void)
305 enable_clk_enet_out();
307 if (IS_BUILTIN(CONFIG_PHYLIB))
308 phy_register_fixup_for_uid(PHY_ID_KSZ8051, MICREL_PHY_ID_MASK,
309 apx4devkit_phy_fixup);
311 mxsfb_pdata.mode_list = apx4devkit_video_modes;
312 mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes);
313 mxsfb_pdata.default_bpp = 32;
314 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
317 #define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0)
318 #define ENET0_MDIO__GPIO_4_1 MXS_GPIO_NR(4, 1)
319 #define ENET0_RX_EN__GPIO_4_2 MXS_GPIO_NR(4, 2)
320 #define ENET0_RXD0__GPIO_4_3 MXS_GPIO_NR(4, 3)
321 #define ENET0_RXD1__GPIO_4_4 MXS_GPIO_NR(4, 4)
322 #define ENET0_TX_EN__GPIO_4_6 MXS_GPIO_NR(4, 6)
323 #define ENET0_TXD0__GPIO_4_7 MXS_GPIO_NR(4, 7)
324 #define ENET0_TXD1__GPIO_4_8 MXS_GPIO_NR(4, 8)
325 #define ENET_CLK__GPIO_4_16 MXS_GPIO_NR(4, 16)
327 #define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29)
328 #define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
329 #define TX28_FEC_nINT MXS_GPIO_NR(4, 5)
331 static const struct gpio tx28_gpios[] __initconst = {
332 { ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" },
333 { ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" },
334 { ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" },
335 { ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" },
336 { ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" },
337 { ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" },
338 { ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" },
339 { ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" },
340 { ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" },
341 { TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" },
342 { TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" },
343 { TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" },
346 static void __init tx28_post_init(void)
348 struct device_node *np;
349 struct platform_device *pdev;
350 struct pinctrl *pctl;
353 enable_clk_enet_out();
355 np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec");
356 pdev = of_find_device_by_node(np);
358 pr_err("%s: failed to find fec device\n", __func__);
362 pctl = pinctrl_get_select(&pdev->dev, "gpio_mode");
364 pr_err("%s: failed to get pinctrl state\n", __func__);
368 ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
370 pr_err("%s: failed to request gpios: %d\n", __func__, ret);
374 /* Power up fec phy */
375 gpio_set_value(TX28_FEC_PHY_POWER, 1);
376 msleep(26); /* 25ms according to data sheet */
378 /* Mode strap pins */
379 gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1);
380 gpio_set_value(ENET0_RXD0__GPIO_4_3, 1);
381 gpio_set_value(ENET0_RXD1__GPIO_4_4, 1);
383 udelay(100); /* minimum assertion time for nRST */
385 /* Deasserting FEC PHY RESET */
386 gpio_set_value(TX28_FEC_PHY_RESET, 1);
391 static void __init mxs_machine_init(void)
393 if (of_machine_is_compatible("fsl,imx28-evk"))
395 else if (of_machine_is_compatible("fsl,imx23-evk"))
397 else if (of_machine_is_compatible("denx,m28evk"))
399 else if (of_machine_is_compatible("bluegiga,apx4devkit"))
402 of_platform_populate(NULL, of_default_bus_match_table,
403 mxs_auxdata_lookup, NULL);
405 if (of_machine_is_compatible("karo,tx28"))
408 if (of_machine_is_compatible("fsl,imx28-evk"))
409 imx28_evk_post_init();
412 static const char *imx23_dt_compat[] __initdata = {
417 static const char *imx28_dt_compat[] __initdata = {
422 DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
423 .map_io = mx23_map_io,
424 .init_irq = mxs_dt_init_irq,
425 .timer = &imx23_timer,
426 .init_machine = mxs_machine_init,
427 .dt_compat = imx23_dt_compat,
428 .restart = mxs_restart,
431 DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
432 .map_io = mx28_map_io,
433 .init_irq = mxs_dt_init_irq,
434 .timer = &imx28_timer,
435 .init_machine = mxs_machine_init,
436 .dt_compat = imx28_dt_compat,
437 .restart = mxs_restart,