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,
165 static void __init update_fec_mac_prop(enum mac_oui oui)
167 struct device_node *np, *from = NULL;
168 struct property *newmac;
169 const u32 *ocotp = mxs_get_ocotp();
174 for (i = 0; i < 2; i++) {
175 np = of_find_compatible_node(from, NULL, "fsl,imx28-fec");
180 newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);
183 newmac->value = newmac + 1;
186 newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
193 * OCOTP only stores the last 4 octets for each mac address,
194 * so hard-code OUI here.
196 macaddr = newmac->value;
210 macaddr[3] = (val >> 16) & 0xff;
211 macaddr[4] = (val >> 8) & 0xff;
212 macaddr[5] = (val >> 0) & 0xff;
214 prom_update_property(np, newmac);
218 static void __init imx23_evk_init(void)
220 mxsfb_pdata.mode_list = mx23evk_video_modes;
221 mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
222 mxsfb_pdata.default_bpp = 32;
223 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
226 static inline void enable_clk_enet_out(void)
228 struct clk *clk = clk_get_sys("enet_out", NULL);
231 clk_prepare_enable(clk);
234 static void __init imx28_evk_init(void)
236 enable_clk_enet_out();
237 update_fec_mac_prop(OUI_FSL);
239 mxsfb_pdata.mode_list = mx28evk_video_modes;
240 mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
241 mxsfb_pdata.default_bpp = 32;
242 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
244 mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
247 static void __init imx28_evk_post_init(void)
249 if (!gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
251 flexcan_pdata[0].transceiver_switch = mx28evk_flexcan0_switch;
252 flexcan_pdata[1].transceiver_switch = mx28evk_flexcan1_switch;
256 static void __init m28evk_init(void)
258 mxsfb_pdata.mode_list = m28evk_video_modes;
259 mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes);
260 mxsfb_pdata.default_bpp = 16;
261 mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
264 static int apx4devkit_phy_fixup(struct phy_device *phy)
266 phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
270 static void __init apx4devkit_init(void)
272 enable_clk_enet_out();
274 if (IS_BUILTIN(CONFIG_PHYLIB))
275 phy_register_fixup_for_uid(PHY_ID_KSZ8051, MICREL_PHY_ID_MASK,
276 apx4devkit_phy_fixup);
278 mxsfb_pdata.mode_list = apx4devkit_video_modes;
279 mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes);
280 mxsfb_pdata.default_bpp = 32;
281 mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
284 #define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0)
285 #define ENET0_MDIO__GPIO_4_1 MXS_GPIO_NR(4, 1)
286 #define ENET0_RX_EN__GPIO_4_2 MXS_GPIO_NR(4, 2)
287 #define ENET0_RXD0__GPIO_4_3 MXS_GPIO_NR(4, 3)
288 #define ENET0_RXD1__GPIO_4_4 MXS_GPIO_NR(4, 4)
289 #define ENET0_TX_EN__GPIO_4_6 MXS_GPIO_NR(4, 6)
290 #define ENET0_TXD0__GPIO_4_7 MXS_GPIO_NR(4, 7)
291 #define ENET0_TXD1__GPIO_4_8 MXS_GPIO_NR(4, 8)
292 #define ENET_CLK__GPIO_4_16 MXS_GPIO_NR(4, 16)
294 #define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29)
295 #define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
296 #define TX28_FEC_nINT MXS_GPIO_NR(4, 5)
298 static const struct gpio tx28_gpios[] __initconst = {
299 { ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" },
300 { ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" },
301 { ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" },
302 { ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" },
303 { ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" },
304 { ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" },
305 { ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" },
306 { ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" },
307 { ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" },
308 { TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" },
309 { TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" },
310 { TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" },
313 static void __init tx28_post_init(void)
315 struct device_node *np;
316 struct platform_device *pdev;
317 struct pinctrl *pctl;
320 enable_clk_enet_out();
322 np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec");
323 pdev = of_find_device_by_node(np);
325 pr_err("%s: failed to find fec device\n", __func__);
329 pctl = pinctrl_get_select(&pdev->dev, "gpio_mode");
331 pr_err("%s: failed to get pinctrl state\n", __func__);
335 ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
337 pr_err("%s: failed to request gpios: %d\n", __func__, ret);
341 /* Power up fec phy */
342 gpio_set_value(TX28_FEC_PHY_POWER, 1);
343 msleep(26); /* 25ms according to data sheet */
345 /* Mode strap pins */
346 gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1);
347 gpio_set_value(ENET0_RXD0__GPIO_4_3, 1);
348 gpio_set_value(ENET0_RXD1__GPIO_4_4, 1);
350 udelay(100); /* minimum assertion time for nRST */
352 /* Deasserting FEC PHY RESET */
353 gpio_set_value(TX28_FEC_PHY_RESET, 1);
358 static void __init mxs_machine_init(void)
360 if (of_machine_is_compatible("fsl,imx28-evk"))
362 else if (of_machine_is_compatible("fsl,imx23-evk"))
364 else if (of_machine_is_compatible("denx,m28evk"))
366 else if (of_machine_is_compatible("bluegiga,apx4devkit"))
369 of_platform_populate(NULL, of_default_bus_match_table,
370 mxs_auxdata_lookup, NULL);
372 if (of_machine_is_compatible("karo,tx28"))
375 if (of_machine_is_compatible("fsl,imx28-evk"))
376 imx28_evk_post_init();
379 static const char *imx23_dt_compat[] __initdata = {
384 static const char *imx28_dt_compat[] __initdata = {
389 DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
390 .map_io = mx23_map_io,
391 .init_irq = icoll_init_irq,
392 .handle_irq = icoll_handle_irq,
393 .timer = &imx23_timer,
394 .init_machine = mxs_machine_init,
395 .dt_compat = imx23_dt_compat,
396 .restart = mxs_restart,
399 DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
400 .map_io = mx28_map_io,
401 .init_irq = icoll_init_irq,
402 .handle_irq = icoll_handle_irq,
403 .timer = &imx28_timer,
404 .init_machine = mxs_machine_init,
405 .dt_compat = imx28_dt_compat,
406 .restart = mxs_restart,