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/micrel_phy.h>
21 #include <linux/mxsfb.h>
22 #include <linux/of_platform.h>
23 #include <linux/phy.h>
24 #include <linux/pinctrl/consumer.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/time.h>
27 #include <mach/common.h>
28 #include <mach/digctl.h>
31 static struct fb_videomode mx23evk_video_modes[] = {
33 .name = "Samsung-LMS430HF02",
37 .pixclock = 108096, /* picosecond (9.2 MHz) */
44 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
45 FB_SYNC_DOTCLK_FAILING_ACT,
49 static struct fb_videomode mx28evk_video_modes[] = {
51 .name = "Seiko-43WVF1G",
55 .pixclock = 29851, /* picosecond (33.5 MHz) */
62 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
63 FB_SYNC_DOTCLK_FAILING_ACT,
67 static struct fb_videomode m28evk_video_modes[] = {
69 .name = "Ampire AM-800480R2TMQW-T01H",
73 .pixclock = 30066, /* picosecond (33.26 MHz) */
80 .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT,
84 static struct fb_videomode apx4devkit_video_modes[] = {
86 .name = "HannStar PJ70112A",
90 .pixclock = 33333, /* picosecond (30.00 MHz) */
97 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
98 FB_SYNC_DATA_ENABLE_HIGH_ACT |
99 FB_SYNC_DOTCLK_FAILING_ACT,
103 static struct mxsfb_platform_data mxsfb_pdata __initdata;
106 * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
108 #define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
110 static int flexcan0_en, flexcan1_en;
112 static void mx28evk_flexcan_switch(void)
114 if (flexcan0_en || flexcan1_en)
115 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
117 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
120 static void mx28evk_flexcan0_switch(int enable)
122 flexcan0_en = enable;
123 mx28evk_flexcan_switch();
126 static void mx28evk_flexcan1_switch(int enable)
128 flexcan1_en = enable;
129 mx28evk_flexcan_switch();
132 static struct flexcan_platform_data flexcan_pdata[2];
134 static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = {
135 OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata),
136 OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata),
137 OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80032000, NULL, &flexcan_pdata[0]),
138 OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80034000, NULL, &flexcan_pdata[1]),
142 static void __init imx23_timer_init(void)
147 static struct sys_timer imx23_timer = {
148 .init = imx23_timer_init,
151 static void __init imx28_timer_init(void)
156 static struct sys_timer imx28_timer = {
157 .init = imx28_timer_init,
166 static void __init update_fec_mac_prop(enum mac_oui oui)
168 struct device_node *np, *from = NULL;
169 struct property *newmac;
170 const u32 *ocotp = mxs_get_ocotp();
175 for (i = 0; i < 2; i++) {
176 np = of_find_compatible_node(from, NULL, "fsl,imx28-fec");
181 newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);
184 newmac->value = newmac + 1;
187 newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
194 * OCOTP only stores the last 4 octets for each mac address,
195 * so hard-code OUI here.
197 macaddr = newmac->value;
209 case OUI_CRYSTALFONTZ:
216 macaddr[3] = (val >> 16) & 0xff;
217 macaddr[4] = (val >> 8) & 0xff;
218 macaddr[5] = (val >> 0) & 0xff;
220 prom_update_property(np, newmac);
224 static void __init imx23_evk_init(void)
226 mxsfb_pdata.mode_list = mx23evk_video_modes;
227 mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
228 mxsfb_pdata.default_bpp = 32;
229 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
232 static inline void enable_clk_enet_out(void)
234 struct clk *clk = clk_get_sys("enet_out", NULL);
237 clk_prepare_enable(clk);
240 static void __init imx28_evk_init(void)
242 enable_clk_enet_out();
243 update_fec_mac_prop(OUI_FSL);
245 mxsfb_pdata.mode_list = mx28evk_video_modes;
246 mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
247 mxsfb_pdata.default_bpp = 32;
248 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
250 mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
253 static void __init imx28_evk_post_init(void)
255 if (!gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
257 flexcan_pdata[0].transceiver_switch = mx28evk_flexcan0_switch;
258 flexcan_pdata[1].transceiver_switch = mx28evk_flexcan1_switch;
262 static void __init m28evk_init(void)
264 mxsfb_pdata.mode_list = m28evk_video_modes;
265 mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes);
266 mxsfb_pdata.default_bpp = 16;
267 mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
270 static int apx4devkit_phy_fixup(struct phy_device *phy)
272 phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
276 static void __init apx4devkit_init(void)
278 enable_clk_enet_out();
280 if (IS_BUILTIN(CONFIG_PHYLIB))
281 phy_register_fixup_for_uid(PHY_ID_KSZ8051, MICREL_PHY_ID_MASK,
282 apx4devkit_phy_fixup);
284 mxsfb_pdata.mode_list = apx4devkit_video_modes;
285 mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes);
286 mxsfb_pdata.default_bpp = 32;
287 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
290 #define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0)
291 #define ENET0_MDIO__GPIO_4_1 MXS_GPIO_NR(4, 1)
292 #define ENET0_RX_EN__GPIO_4_2 MXS_GPIO_NR(4, 2)
293 #define ENET0_RXD0__GPIO_4_3 MXS_GPIO_NR(4, 3)
294 #define ENET0_RXD1__GPIO_4_4 MXS_GPIO_NR(4, 4)
295 #define ENET0_TX_EN__GPIO_4_6 MXS_GPIO_NR(4, 6)
296 #define ENET0_TXD0__GPIO_4_7 MXS_GPIO_NR(4, 7)
297 #define ENET0_TXD1__GPIO_4_8 MXS_GPIO_NR(4, 8)
298 #define ENET_CLK__GPIO_4_16 MXS_GPIO_NR(4, 16)
300 #define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29)
301 #define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
302 #define TX28_FEC_nINT MXS_GPIO_NR(4, 5)
304 static const struct gpio tx28_gpios[] __initconst = {
305 { ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" },
306 { ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" },
307 { ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" },
308 { ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" },
309 { ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" },
310 { ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" },
311 { ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" },
312 { ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" },
313 { ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" },
314 { TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" },
315 { TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" },
316 { TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" },
319 static void __init tx28_post_init(void)
321 struct device_node *np;
322 struct platform_device *pdev;
323 struct pinctrl *pctl;
326 enable_clk_enet_out();
328 np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec");
329 pdev = of_find_device_by_node(np);
331 pr_err("%s: failed to find fec device\n", __func__);
335 pctl = pinctrl_get_select(&pdev->dev, "gpio_mode");
337 pr_err("%s: failed to get pinctrl state\n", __func__);
341 ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
343 pr_err("%s: failed to request gpios: %d\n", __func__, ret);
347 /* Power up fec phy */
348 gpio_set_value(TX28_FEC_PHY_POWER, 1);
349 msleep(26); /* 25ms according to data sheet */
351 /* Mode strap pins */
352 gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1);
353 gpio_set_value(ENET0_RXD0__GPIO_4_3, 1);
354 gpio_set_value(ENET0_RXD1__GPIO_4_4, 1);
356 udelay(100); /* minimum assertion time for nRST */
358 /* Deasserting FEC PHY RESET */
359 gpio_set_value(TX28_FEC_PHY_RESET, 1);
364 static void __init cfa10049_init(void)
366 enable_clk_enet_out();
367 update_fec_mac_prop(OUI_CRYSTALFONTZ);
370 static void __init apf28_init(void)
372 enable_clk_enet_out();
375 static void __init mxs_machine_init(void)
377 if (of_machine_is_compatible("fsl,imx28-evk"))
379 else if (of_machine_is_compatible("fsl,imx23-evk"))
381 else if (of_machine_is_compatible("denx,m28evk"))
383 else if (of_machine_is_compatible("bluegiga,apx4devkit"))
385 else if (of_machine_is_compatible("crystalfontz,cfa10049"))
387 else if (of_machine_is_compatible("armadeus,imx28-apf28"))
390 of_platform_populate(NULL, of_default_bus_match_table,
391 mxs_auxdata_lookup, NULL);
393 if (of_machine_is_compatible("karo,tx28"))
396 if (of_machine_is_compatible("fsl,imx28-evk"))
397 imx28_evk_post_init();
400 static const char *imx23_dt_compat[] __initdata = {
405 static const char *imx28_dt_compat[] __initdata = {
410 DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
411 .map_io = mx23_map_io,
412 .init_irq = icoll_init_irq,
413 .handle_irq = icoll_handle_irq,
414 .timer = &imx23_timer,
415 .init_machine = mxs_machine_init,
416 .dt_compat = imx23_dt_compat,
417 .restart = mxs_restart,
420 DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
421 .map_io = mx28_map_io,
422 .init_irq = icoll_init_irq,
423 .handle_irq = icoll_handle_irq,
424 .timer = &imx28_timer,
425 .init_machine = mxs_machine_init,
426 .dt_compat = imx28_dt_compat,
427 .restart = mxs_restart,