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13#include <linux/init.h>
14#include <linux/ioport.h>
15#include <linux/delay.h>
16#include <linux/netdevice.h>
17#include <linux/notifier.h>
18#include <linux/device.h>
19#include <linux/ethtool.h>
20#include <linux/param.h>
21#include <linux/ptrace.h>
22#include <linux/mtd/physmap.h>
23#include <linux/platform_device.h>
24#include <linux/platform_data/txx9/ndfmc.h>
25#include <asm/bootinfo.h>
26#include <asm/reboot.h>
27#include <asm/traps.h>
28#include <asm/txx9irq.h>
29#include <asm/txx9tmr.h>
30#include <asm/txx9/generic.h>
31#include <asm/txx9/dmac.h>
32#include <asm/txx9/tx4939.h>
33
34static void __init tx4939_wdr_init(void)
35{
36
37 if (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDRST)
38 pr_warn("Watchdog reset detected at 0x%lx\n",
39 read_c0_errorepc());
40
41 tx4939_ccfg_set(TX4939_CCFG_WDRST);
42
43 tx4939_ccfg_set(TX4939_CCFG_WR);
44}
45
46void __init tx4939_wdt_init(void)
47{
48 txx9_wdt_init(TX4939_TMR_REG(2) & 0xfffffffffULL);
49}
50
51static void tx4939_machine_restart(char *command)
52{
53 local_irq_disable();
54 pr_emerg("Rebooting (with %s watchdog reset)...\n",
55 (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDREXEN) ?
56 "external" : "internal");
57
58 tx4939_ccfg_set(TX4939_CCFG_WDRST);
59 txx9_wdt_now(TX4939_TMR_REG(2) & 0xfffffffffULL);
60 while (!(____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDRST))
61 ;
62 mdelay(10);
63 if (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_WDREXEN) {
64 pr_emerg("Rebooting (with internal watchdog reset)...\n");
65
66 tx4939_ccfg_clear(TX4939_CCFG_WDREXEN);
67 }
68
69 (*_machine_halt)();
70}
71
72void show_registers(struct pt_regs *regs);
73static int tx4939_be_handler(struct pt_regs *regs, int is_fixup)
74{
75 int data = regs->cp0_cause & 4;
76 console_verbose();
77 pr_err("%cBE exception at %#lx\n",
78 data ? 'D' : 'I', regs->cp0_epc);
79 pr_err("ccfg:%llx, toea:%llx\n",
80 (unsigned long long)____raw_readq(&tx4939_ccfgptr->ccfg),
81 (unsigned long long)____raw_readq(&tx4939_ccfgptr->toea));
82#ifdef CONFIG_PCI
83 tx4927_report_pcic_status();
84#endif
85 show_registers(regs);
86 panic("BusError!");
87}
88static void __init tx4939_be_init(void)
89{
90 board_be_handler = tx4939_be_handler;
91}
92
93static struct resource tx4939_sdram_resource[4];
94static struct resource tx4939_sram_resource;
95#define TX4939_SRAM_SIZE 0x800
96
97void __init tx4939_add_memory_regions(void)
98{
99 int i;
100 unsigned long start, size;
101 u64 win;
102
103 for (i = 0; i < 4; i++) {
104 if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i)))
105 continue;
106 win = ____raw_readq(&tx4939_ddrcptr->win[i]);
107 start = (unsigned long)(win >> 48);
108 size = (((unsigned long)(win >> 32) & 0xffff) + 1) - start;
109 add_memory_region(start << 20, size << 20, BOOT_MEM_RAM);
110 }
111}
112
113void __init tx4939_setup(void)
114{
115 int i;
116 __u32 divmode;
117 __u64 pcfg;
118 unsigned int cpuclk = 0;
119
120 txx9_reg_res_init(TX4939_REV_PCODE(), TX4939_REG_BASE,
121 TX4939_REG_SIZE);
122 set_c0_config(TX49_CONF_CWFON);
123
124
125 for (i = 0; i < 4; i++) {
126 if (!(TX4939_EBUSC_CR(i) & 0x8))
127 continue;
128 txx9_ce_res[i].start = (unsigned long)TX4939_EBUSC_BA(i);
129 txx9_ce_res[i].end =
130 txx9_ce_res[i].start + TX4939_EBUSC_SIZE(i) - 1;
131 request_resource(&iomem_resource, &txx9_ce_res[i]);
132 }
133
134
135 if (txx9_master_clock) {
136
137 divmode = (__u32)____raw_readq(&tx4939_ccfgptr->ccfg) &
138 TX4939_CCFG_MULCLK_MASK;
139 cpuclk = txx9_master_clock * 20 / 2;
140 switch (divmode) {
141 case TX4939_CCFG_MULCLK_8:
142 cpuclk = cpuclk / 3 * 4 ; break;
143 case TX4939_CCFG_MULCLK_9:
144 cpuclk = cpuclk / 2 * 3 ; break;
145 case TX4939_CCFG_MULCLK_10:
146 cpuclk = cpuclk / 3 * 5 ; break;
147 case TX4939_CCFG_MULCLK_11:
148 cpuclk = cpuclk / 6 * 11; break;
149 case TX4939_CCFG_MULCLK_12:
150 cpuclk = cpuclk * 2 ; break;
151 case TX4939_CCFG_MULCLK_13:
152 cpuclk = cpuclk / 6 * 13; break;
153 case TX4939_CCFG_MULCLK_14:
154 cpuclk = cpuclk / 3 * 7 ; break;
155 case TX4939_CCFG_MULCLK_15:
156 cpuclk = cpuclk / 2 * 5 ; break;
157 }
158 txx9_cpu_clock = cpuclk;
159 } else {
160 if (txx9_cpu_clock == 0)
161 txx9_cpu_clock = 400000000;
162
163 cpuclk = txx9_cpu_clock;
164 divmode = (__u32)____raw_readq(&tx4939_ccfgptr->ccfg) &
165 TX4939_CCFG_MULCLK_MASK;
166 switch (divmode) {
167 case TX4939_CCFG_MULCLK_8:
168 txx9_master_clock = cpuclk * 6 / 8; break;
169 case TX4939_CCFG_MULCLK_9:
170 txx9_master_clock = cpuclk * 6 / 9; break;
171 case TX4939_CCFG_MULCLK_10:
172 txx9_master_clock = cpuclk * 6 / 10; break;
173 case TX4939_CCFG_MULCLK_11:
174 txx9_master_clock = cpuclk * 6 / 11; break;
175 case TX4939_CCFG_MULCLK_12:
176 txx9_master_clock = cpuclk * 6 / 12; break;
177 case TX4939_CCFG_MULCLK_13:
178 txx9_master_clock = cpuclk * 6 / 13; break;
179 case TX4939_CCFG_MULCLK_14:
180 txx9_master_clock = cpuclk * 6 / 14; break;
181 case TX4939_CCFG_MULCLK_15:
182 txx9_master_clock = cpuclk * 6 / 15; break;
183 }
184 txx9_master_clock /= 10;
185 }
186
187 divmode = (__u32)____raw_readq(&tx4939_ccfgptr->ccfg) &
188 TX4939_CCFG_YDIVMODE_MASK;
189 txx9_gbus_clock = txx9_cpu_clock;
190 switch (divmode) {
191 case TX4939_CCFG_YDIVMODE_2:
192 txx9_gbus_clock /= 2; break;
193 case TX4939_CCFG_YDIVMODE_3:
194 txx9_gbus_clock /= 3; break;
195 case TX4939_CCFG_YDIVMODE_5:
196 txx9_gbus_clock /= 5; break;
197 case TX4939_CCFG_YDIVMODE_6:
198 txx9_gbus_clock /= 6; break;
199 }
200
201 loops_per_jiffy = txx9_cpu_clock / HZ / 2;
202
203
204 tx4939_wdr_init();
205
206 tx4939_ccfg_set(TX4939_CCFG_WDRST | TX4939_CCFG_BEOW);
207
208 if (txx9_ccfg_toeon)
209 tx4939_ccfg_set(TX4939_CCFG_TOE);
210
211
212 txx9_clear64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_DMASEL_ALL);
213
214
215 if (!(____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB))
216 txx9_clear64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_PCICLKEN_ALL);
217
218 pr_info("%s -- %dMHz(M%dMHz,G%dMHz) CRIR:%08x CCFG:%llx PCFG:%llx\n",
219 txx9_pcode_str,
220 (cpuclk + 500000) / 1000000,
221 (txx9_master_clock + 500000) / 1000000,
222 (txx9_gbus_clock + 500000) / 1000000,
223 (__u32)____raw_readq(&tx4939_ccfgptr->crir),
224 ____raw_readq(&tx4939_ccfgptr->ccfg),
225 ____raw_readq(&tx4939_ccfgptr->pcfg));
226
227 pr_info("%s DDRC -- EN:%08x", txx9_pcode_str,
228 (__u32)____raw_readq(&tx4939_ddrcptr->winen));
229 for (i = 0; i < 4; i++) {
230 __u64 win = ____raw_readq(&tx4939_ddrcptr->win[i]);
231 if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i)))
232 continue;
233 pr_cont(" #%d:%016llx", i, win);
234 tx4939_sdram_resource[i].name = "DDR SDRAM";
235 tx4939_sdram_resource[i].start =
236 (unsigned long)(win >> 48) << 20;
237 tx4939_sdram_resource[i].end =
238 ((((unsigned long)(win >> 32) & 0xffff) + 1) <<
239 20) - 1;
240 tx4939_sdram_resource[i].flags = IORESOURCE_MEM;
241 request_resource(&iomem_resource, &tx4939_sdram_resource[i]);
242 }
243 pr_cont("\n");
244
245
246 if (____raw_readq(&tx4939_sramcptr->cr) & 1) {
247 unsigned int size = TX4939_SRAM_SIZE;
248 tx4939_sram_resource.name = "SRAM";
249 tx4939_sram_resource.start =
250 (____raw_readq(&tx4939_sramcptr->cr) >> (39-11))
251 & ~(size - 1);
252 tx4939_sram_resource.end =
253 tx4939_sram_resource.start + TX4939_SRAM_SIZE - 1;
254 tx4939_sram_resource.flags = IORESOURCE_MEM;
255 request_resource(&iomem_resource, &tx4939_sram_resource);
256 }
257
258
259
260 for (i = 0; i < TX4939_NR_TMR; i++)
261 txx9_tmr_init(TX4939_TMR_REG(i) & 0xfffffffffULL);
262
263
264 txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1RST);
265 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
266 if (pcfg & (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE)) {
267 mdelay(1);
268
269 txx9_clear64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1RST);
270 } else {
271 pr_info("%s: stop PCIC1\n", txx9_pcode_str);
272
273 txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1CKD);
274 }
275 if (!(pcfg & TX4939_PCFG_ET0MODE)) {
276 pr_info("%s: stop ETH0\n", txx9_pcode_str);
277 txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH0RST);
278 txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH0CKD);
279 }
280 if (!(pcfg & TX4939_PCFG_ET1MODE)) {
281 pr_info("%s: stop ETH1\n", txx9_pcode_str);
282 txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH1RST);
283 txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_ETH1CKD);
284 }
285
286 _machine_restart = tx4939_machine_restart;
287 board_be_init = tx4939_be_init;
288}
289
290void __init tx4939_time_init(unsigned int tmrnr)
291{
292 if (____raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_TINTDIS)
293 txx9_clockevent_init(TX4939_TMR_REG(tmrnr) & 0xfffffffffULL,
294 TXX9_IRQ_BASE + TX4939_IR_TMR(tmrnr),
295 TXX9_IMCLK);
296}
297
298void __init tx4939_sio_init(unsigned int sclk, unsigned int cts_mask)
299{
300 int i;
301 unsigned int ch_mask = 0;
302 __u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);
303
304 cts_mask |= ~1;
305 if ((pcfg & TX4939_PCFG_SIO2MODE_MASK) != TX4939_PCFG_SIO2MODE_SIO0)
306 cts_mask |= 1 << 0;
307 if ((pcfg & TX4939_PCFG_SIO2MODE_MASK) != TX4939_PCFG_SIO2MODE_SIO2)
308 ch_mask |= 1 << 2;
309 if (pcfg & TX4939_PCFG_SIO3MODE)
310 ch_mask |= 1 << 3;
311 for (i = 0; i < 4; i++) {
312 if ((1 << i) & ch_mask)
313 continue;
314 txx9_sio_init(TX4939_SIO_REG(i) & 0xfffffffffULL,
315 TXX9_IRQ_BASE + TX4939_IR_SIO(i),
316 i, sclk, (1 << i) & cts_mask);
317 }
318}
319
320#if IS_ENABLED(CONFIG_TC35815)
321static u32 tx4939_get_eth_speed(struct net_device *dev)
322{
323 struct ethtool_link_ksettings cmd;
324
325 if (__ethtool_get_link_ksettings(dev, &cmd))
326 return 100;
327
328 return cmd.base.speed;
329}
330
331static int tx4939_netdev_event(struct notifier_block *this,
332 unsigned long event,
333 void *ptr)
334{
335 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
336
337 if (event == NETDEV_CHANGE && netif_carrier_ok(dev)) {
338 __u64 bit = 0;
339 if (dev->irq == TXX9_IRQ_BASE + TX4939_IR_ETH(0))
340 bit = TX4939_PCFG_SPEED0;
341 else if (dev->irq == TXX9_IRQ_BASE + TX4939_IR_ETH(1))
342 bit = TX4939_PCFG_SPEED1;
343 if (bit) {
344 if (tx4939_get_eth_speed(dev) == 100)
345 txx9_set64(&tx4939_ccfgptr->pcfg, bit);
346 else
347 txx9_clear64(&tx4939_ccfgptr->pcfg, bit);
348 }
349 }
350 return NOTIFY_DONE;
351}
352
353static struct notifier_block tx4939_netdev_notifier = {
354 .notifier_call = tx4939_netdev_event,
355 .priority = 1,
356};
357
358void __init tx4939_ethaddr_init(unsigned char *addr0, unsigned char *addr1)
359{
360 u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);
361
362 if (addr0 && (pcfg & TX4939_PCFG_ET0MODE))
363 txx9_ethaddr_init(TXX9_IRQ_BASE + TX4939_IR_ETH(0), addr0);
364 if (addr1 && (pcfg & TX4939_PCFG_ET1MODE))
365 txx9_ethaddr_init(TXX9_IRQ_BASE + TX4939_IR_ETH(1), addr1);
366 register_netdevice_notifier(&tx4939_netdev_notifier);
367}
368#else
369void __init tx4939_ethaddr_init(unsigned char *addr0, unsigned char *addr1)
370{
371}
372#endif
373
374void __init tx4939_mtd_init(int ch)
375{
376 struct physmap_flash_data pdata = {
377 .width = TX4939_EBUSC_WIDTH(ch) / 8,
378 };
379 unsigned long start = txx9_ce_res[ch].start;
380 unsigned long size = txx9_ce_res[ch].end - start + 1;
381
382 if (!(TX4939_EBUSC_CR(ch) & 0x8))
383 return;
384 txx9_physmap_flash_init(ch, start, size, &pdata);
385}
386
387#define TX4939_ATA_REG_PHYS(ch) (TX4939_ATA_REG(ch) & 0xfffffffffULL)
388void __init tx4939_ata_init(void)
389{
390 static struct resource ata0_res[] = {
391 {
392 .start = TX4939_ATA_REG_PHYS(0),
393 .end = TX4939_ATA_REG_PHYS(0) + 0x1000 - 1,
394 .flags = IORESOURCE_MEM,
395 }, {
396 .start = TXX9_IRQ_BASE + TX4939_IR_ATA(0),
397 .flags = IORESOURCE_IRQ,
398 },
399 };
400 static struct resource ata1_res[] = {
401 {
402 .start = TX4939_ATA_REG_PHYS(1),
403 .end = TX4939_ATA_REG_PHYS(1) + 0x1000 - 1,
404 .flags = IORESOURCE_MEM,
405 }, {
406 .start = TXX9_IRQ_BASE + TX4939_IR_ATA(1),
407 .flags = IORESOURCE_IRQ,
408 },
409 };
410 static struct platform_device ata0_dev = {
411 .name = "tx4939ide",
412 .id = 0,
413 .num_resources = ARRAY_SIZE(ata0_res),
414 .resource = ata0_res,
415 };
416 static struct platform_device ata1_dev = {
417 .name = "tx4939ide",
418 .id = 1,
419 .num_resources = ARRAY_SIZE(ata1_res),
420 .resource = ata1_res,
421 };
422 __u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);
423
424 if (pcfg & TX4939_PCFG_ATA0MODE)
425 platform_device_register(&ata0_dev);
426 if ((pcfg & (TX4939_PCFG_ATA1MODE |
427 TX4939_PCFG_ET1MODE |
428 TX4939_PCFG_ET0MODE)) == TX4939_PCFG_ATA1MODE)
429 platform_device_register(&ata1_dev);
430}
431
432void __init tx4939_rtc_init(void)
433{
434 static struct resource res[] = {
435 {
436 .start = TX4939_RTC_REG & 0xfffffffffULL,
437 .end = (TX4939_RTC_REG & 0xfffffffffULL) + 0x100 - 1,
438 .flags = IORESOURCE_MEM,
439 }, {
440 .start = TXX9_IRQ_BASE + TX4939_IR_RTC,
441 .flags = IORESOURCE_IRQ,
442 },
443 };
444 static struct platform_device rtc_dev = {
445 .name = "tx4939rtc",
446 .id = -1,
447 .num_resources = ARRAY_SIZE(res),
448 .resource = res,
449 };
450
451 platform_device_register(&rtc_dev);
452}
453
454void __init tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
455 unsigned char ch_mask, unsigned char wide_mask)
456{
457 struct txx9ndfmc_platform_data plat_data = {
458 .shift = 1,
459 .gbus_clock = txx9_gbus_clock,
460 .hold = hold,
461 .spw = spw,
462 .flags = NDFMC_PLAT_FLAG_NO_RSTR | NDFMC_PLAT_FLAG_HOLDADD |
463 NDFMC_PLAT_FLAG_DUMMYWRITE,
464 .ch_mask = ch_mask,
465 .wide_mask = wide_mask,
466 };
467 txx9_ndfmc_init(TX4939_NDFMC_REG & 0xfffffffffULL, &plat_data);
468}
469
470void __init tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1)
471{
472 struct txx9dmac_platform_data plat_data = {
473 .have_64bit_regs = true,
474 };
475 int i;
476
477 for (i = 0; i < 2; i++) {
478 plat_data.memcpy_chan = i ? memcpy_chan1 : memcpy_chan0;
479 txx9_dmac_init(i, TX4939_DMA_REG(i) & 0xfffffffffULL,
480 TXX9_IRQ_BASE + TX4939_IR_DMA(i, 0),
481 &plat_data);
482 }
483}
484
485void __init tx4939_aclc_init(void)
486{
487 u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);
488
489 if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_ACLC)
490 txx9_aclc_init(TX4939_ACLC_REG & 0xfffffffffULL,
491 TXX9_IRQ_BASE + TX4939_IR_ACLC, 1, 0, 1);
492}
493
494void __init tx4939_sramc_init(void)
495{
496 if (tx4939_sram_resource.start)
497 txx9_sramc_init(&tx4939_sram_resource);
498}
499
500void __init tx4939_rng_init(void)
501{
502 static struct resource res = {
503 .start = TX4939_RNG_REG & 0xfffffffffULL,
504 .end = (TX4939_RNG_REG & 0xfffffffffULL) + 0x30 - 1,
505 .flags = IORESOURCE_MEM,
506 };
507 static struct platform_device pdev = {
508 .name = "tx4939-rng",
509 .id = -1,
510 .num_resources = 1,
511 .resource = &res,
512 };
513
514 platform_device_register(&pdev);
515}
516
517static void __init tx4939_stop_unused_modules(void)
518{
519 __u64 pcfg, rst = 0, ckd = 0;
520 char buf[128];
521
522 buf[0] = '\0';
523 local_irq_disable();
524 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
525 if ((pcfg & TX4939_PCFG_I2SMODE_MASK) !=
526 TX4939_PCFG_I2SMODE_ACLC) {
527 rst |= TX4939_CLKCTR_ACLRST;
528 ckd |= TX4939_CLKCTR_ACLCKD;
529 strcat(buf, " ACLC");
530 }
531 if ((pcfg & TX4939_PCFG_I2SMODE_MASK) !=
532 TX4939_PCFG_I2SMODE_I2S &&
533 (pcfg & TX4939_PCFG_I2SMODE_MASK) !=
534 TX4939_PCFG_I2SMODE_I2S_ALT) {
535 rst |= TX4939_CLKCTR_I2SRST;
536 ckd |= TX4939_CLKCTR_I2SCKD;
537 strcat(buf, " I2S");
538 }
539 if (!(pcfg & TX4939_PCFG_ATA0MODE)) {
540 rst |= TX4939_CLKCTR_ATA0RST;
541 ckd |= TX4939_CLKCTR_ATA0CKD;
542 strcat(buf, " ATA0");
543 }
544 if (!(pcfg & TX4939_PCFG_ATA1MODE)) {
545 rst |= TX4939_CLKCTR_ATA1RST;
546 ckd |= TX4939_CLKCTR_ATA1CKD;
547 strcat(buf, " ATA1");
548 }
549 if (pcfg & TX4939_PCFG_SPIMODE) {
550 rst |= TX4939_CLKCTR_SPIRST;
551 ckd |= TX4939_CLKCTR_SPICKD;
552 strcat(buf, " SPI");
553 }
554 if (!(pcfg & (TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE))) {
555 rst |= TX4939_CLKCTR_VPCRST;
556 ckd |= TX4939_CLKCTR_VPCCKD;
557 strcat(buf, " VPC");
558 }
559 if ((pcfg & TX4939_PCFG_SIO2MODE_MASK) != TX4939_PCFG_SIO2MODE_SIO2) {
560 rst |= TX4939_CLKCTR_SIO2RST;
561 ckd |= TX4939_CLKCTR_SIO2CKD;
562 strcat(buf, " SIO2");
563 }
564 if (pcfg & TX4939_PCFG_SIO3MODE) {
565 rst |= TX4939_CLKCTR_SIO3RST;
566 ckd |= TX4939_CLKCTR_SIO3CKD;
567 strcat(buf, " SIO3");
568 }
569 if (rst | ckd) {
570 txx9_set64(&tx4939_ccfgptr->clkctr, rst);
571 txx9_set64(&tx4939_ccfgptr->clkctr, ckd);
572 }
573 local_irq_enable();
574 if (buf[0])
575 pr_info("%s: stop%s\n", txx9_pcode_str, buf);
576}
577
578static int __init tx4939_late_init(void)
579{
580 if (txx9_pcode != 0x4939)
581 return -ENODEV;
582 tx4939_stop_unused_modules();
583 return 0;
584}
585late_initcall(tx4939_late_init);
586
