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-rw-r--r--arch/mips/txx9/rbtx4927/setup.c98
1 files changed, 49 insertions, 49 deletions
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index c3566c39c26c..bba6ef9db068 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -252,55 +252,6 @@ static void __init rbtx4927_mem_setup(void)
252 set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET); 252 set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET);
253#endif 253#endif
254 254
255 /*
256 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz.
257 *
258 * For TX4927:
259 * PCIDIVMODE[12:11]'s initial value is given by S9[4:3] (ON:0, OFF:1).
260 * CPU 166MHz: PCI 66MHz : PCIDIVMODE: 00 (1/2.5)
261 * CPU 200MHz: PCI 66MHz : PCIDIVMODE: 01 (1/3)
262 * CPU 166MHz: PCI 33MHz : PCIDIVMODE: 10 (1/5)
263 * CPU 200MHz: PCI 33MHz : PCIDIVMODE: 11 (1/6)
264 * i.e. S9[3]: ON (83MHz), OFF (100MHz)
265 *
266 * For TX4937:
267 * PCIDIVMODE[12:11]'s initial value is given by S1[5:4] (ON:0, OFF:1)
268 * PCIDIVMODE[10] is 0.
269 * CPU 266MHz: PCI 33MHz : PCIDIVMODE: 000 (1/8)
270 * CPU 266MHz: PCI 66MHz : PCIDIVMODE: 001 (1/4)
271 * CPU 300MHz: PCI 33MHz : PCIDIVMODE: 010 (1/9)
272 * CPU 300MHz: PCI 66MHz : PCIDIVMODE: 011 (1/4.5)
273 * CPU 333MHz: PCI 33MHz : PCIDIVMODE: 100 (1/10)
274 * CPU 333MHz: PCI 66MHz : PCIDIVMODE: 101 (1/5)
275 *
276 */
277 if (mips_machtype == MACH_TOSHIBA_RBTX4937)
278 switch ((unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg) &
279 TX4938_CCFG_PCIDIVMODE_MASK) {
280 case TX4938_CCFG_PCIDIVMODE_8:
281 case TX4938_CCFG_PCIDIVMODE_4:
282 txx9_cpu_clock = 266666666; /* 266MHz */
283 break;
284 case TX4938_CCFG_PCIDIVMODE_9:
285 case TX4938_CCFG_PCIDIVMODE_4_5:
286 txx9_cpu_clock = 300000000; /* 300MHz */
287 break;
288 default:
289 txx9_cpu_clock = 333333333; /* 333MHz */
290 }
291 else
292 switch ((unsigned long)__raw_readq(&tx4927_ccfgptr->ccfg) &
293 TX4927_CCFG_PCIDIVMODE_MASK) {
294 case TX4927_CCFG_PCIDIVMODE_2_5:
295 case TX4927_CCFG_PCIDIVMODE_5:
296 txx9_cpu_clock = 166666666; /* 166MHz */
297 break;
298 default:
299 txx9_cpu_clock = 200000000; /* 200MHz */
300 }
301 /* change default value to udelay/mdelay take reasonable time */
302 loops_per_jiffy = txx9_cpu_clock / HZ / 2;
303
304 /* CCFG */ 255 /* CCFG */
305 /* do reset on watchdog */ 256 /* do reset on watchdog */
306 tx4927_ccfg_set(TX4927_CCFG_WR); 257 tx4927_ccfg_set(TX4927_CCFG_WR);
@@ -349,6 +300,55 @@ static void __init rbtx4927_mem_setup(void)
349 300
350static void __init rbtx4927_time_init(void) 301static void __init rbtx4927_time_init(void)
351{ 302{
303 /*
304 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz.
305 *
306 * For TX4927:
307 * PCIDIVMODE[12:11]'s initial value is given by S9[4:3] (ON:0, OFF:1).
308 * CPU 166MHz: PCI 66MHz : PCIDIVMODE: 00 (1/2.5)
309 * CPU 200MHz: PCI 66MHz : PCIDIVMODE: 01 (1/3)
310 * CPU 166MHz: PCI 33MHz : PCIDIVMODE: 10 (1/5)
311 * CPU 200MHz: PCI 33MHz : PCIDIVMODE: 11 (1/6)
312 * i.e. S9[3]: ON (83MHz), OFF (100MHz)
313 *
314 * For TX4937:
315 * PCIDIVMODE[12:11]'s initial value is given by S1[5:4] (ON:0, OFF:1)
316 * PCIDIVMODE[10] is 0.
317 * CPU 266MHz: PCI 33MHz : PCIDIVMODE: 000 (1/8)
318 * CPU 266MHz: PCI 66MHz : PCIDIVMODE: 001 (1/4)
319 * CPU 300MHz: PCI 33MHz : PCIDIVMODE: 010 (1/9)
320 * CPU 300MHz: PCI 66MHz : PCIDIVMODE: 011 (1/4.5)
321 * CPU 333MHz: PCI 33MHz : PCIDIVMODE: 100 (1/10)
322 * CPU 333MHz: PCI 66MHz : PCIDIVMODE: 101 (1/5)
323 */
324 if (mips_machtype == MACH_TOSHIBA_RBTX4937)
325 switch ((unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg) &
326 TX4938_CCFG_PCIDIVMODE_MASK) {
327 case TX4938_CCFG_PCIDIVMODE_8:
328 case TX4938_CCFG_PCIDIVMODE_4:
329 txx9_cpu_clock = 266666666; /* 266MHz */
330 break;
331 case TX4938_CCFG_PCIDIVMODE_9:
332 case TX4938_CCFG_PCIDIVMODE_4_5:
333 txx9_cpu_clock = 300000000; /* 300MHz */
334 break;
335 default:
336 txx9_cpu_clock = 333333333; /* 333MHz */
337 }
338 else
339 switch ((unsigned long)__raw_readq(&tx4927_ccfgptr->ccfg) &
340 TX4927_CCFG_PCIDIVMODE_MASK) {
341 case TX4927_CCFG_PCIDIVMODE_2_5:
342 case TX4927_CCFG_PCIDIVMODE_5:
343 txx9_cpu_clock = 166666666; /* 166MHz */
344 break;
345 default:
346 txx9_cpu_clock = 200000000; /* 200MHz */
347 }
348
349 /* change default value to udelay/mdelay take reasonable time */
350 loops_per_jiffy = txx9_cpu_clock / HZ / 2;
351
352 mips_hpt_frequency = txx9_cpu_clock / 2; 352 mips_hpt_frequency = txx9_cpu_clock / 2;
353 if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_TINTDIS) 353 if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_TINTDIS)
354 txx9_clockevent_init(TX4927_TMR_REG(0) & 0xfffffffffULL, 354 txx9_clockevent_init(TX4927_TMR_REG(0) & 0xfffffffffULL,