2 * Copyright 2012 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
8 #include <asm/fsl_serdes.h>
9 #include <asm/immap_85xx.h>
11 #include <asm/processor.h>
12 #include <asm/fsl_law.h>
13 #include <linux/errno.h>
14 #include <fsl_errata.h>
15 #include "fsl_corenet2_serdes.h"
17 #ifdef CONFIG_SYS_FSL_SRDS_1
18 static u8 serdes1_prtcl_map
[SERDES_PRCTL_COUNT
];
20 #ifdef CONFIG_SYS_FSL_SRDS_2
21 static u8 serdes2_prtcl_map
[SERDES_PRCTL_COUNT
];
23 #ifdef CONFIG_SYS_FSL_SRDS_3
24 static u8 serdes3_prtcl_map
[SERDES_PRCTL_COUNT
];
26 #ifdef CONFIG_SYS_FSL_SRDS_4
27 static u8 serdes4_prtcl_map
[SERDES_PRCTL_COUNT
];
31 static const char *serdes_prtcl_str
[] = {
41 [SGMII_FM1_DTSEC1
] = "SGMII_FM1_DTSEC1",
42 [SGMII_FM1_DTSEC2
] = "SGMII_FM1_DTSEC2",
43 [SGMII_FM1_DTSEC3
] = "SGMII_FM1_DTSEC3",
44 [SGMII_FM1_DTSEC4
] = "SGMII_FM1_DTSEC4",
45 [SGMII_FM1_DTSEC5
] = "SGMII_FM1_DTSEC5",
46 [SGMII_FM1_DTSEC6
] = "SGMII_FM1_DTSEC6",
47 [SGMII_FM2_DTSEC1
] = "SGMII_FM2_DTSEC1",
48 [SGMII_FM2_DTSEC2
] = "SGMII_FM2_DTSEC2",
49 [SGMII_FM2_DTSEC3
] = "SGMII_FM2_DTSEC3",
50 [SGMII_FM2_DTSEC4
] = "SGMII_FM2_DTSEC4",
51 [XAUI_FM1
] = "XAUI_FM1",
52 [XAUI_FM2
] = "XAUI_FM2",
62 [XAUI_FM1_MAC9
] = "XAUI_FM1_MAC9",
63 [XAUI_FM1_MAC10
] = "XAUI_FM1_MAC10",
64 [XAUI_FM2_MAC9
] = "XAUI_FM2_MAC9",
65 [XAUI_FM2_MAC10
] = "XAUI_FM2_MAC10",
66 [HIGIG_FM1_MAC9
] = "HiGig_FM1_MAC9",
67 [HIGIG_FM1_MAC10
] = "HiGig_FM1_MAC10",
68 [HIGIG_FM2_MAC9
] = "HiGig_FM2_MAC9",
69 [HIGIG_FM2_MAC10
] = "HiGig_FM2_MAC10",
70 [QSGMII_FM1_A
] = "QSGMII_FM1_A",
71 [QSGMII_FM1_B
] = "QSGMII_FM1_B",
72 [QSGMII_FM2_A
] = "QSGMII_FM2_A",
73 [QSGMII_FM2_B
] = "QSGMII_FM2_B",
74 [XFI_FM1_MAC9
] = "XFI_FM1_MAC9",
75 [XFI_FM1_MAC10
] = "XFI_FM1_MAC10",
76 [XFI_FM2_MAC9
] = "XFI_FM2_MAC9",
77 [XFI_FM2_MAC10
] = "XFI_FM2_MAC10",
78 [INTERLAKEN
] = "INTERLAKEN",
79 [QSGMII_SW1_A
] = "QSGMII_SW1_A",
80 [QSGMII_SW1_B
] = "QSGMII_SW1_B",
81 [SGMII_SW1_MAC1
] = "SGMII_SW1_MAC1",
82 [SGMII_SW1_MAC2
] = "SGMII_SW1_MAC2",
83 [SGMII_SW1_MAC3
] = "SGMII_SW1_MAC3",
84 [SGMII_SW1_MAC4
] = "SGMII_SW1_MAC4",
85 [SGMII_SW1_MAC5
] = "SGMII_SW1_MAC5",
86 [SGMII_SW1_MAC6
] = "SGMII_SW1_MAC6",
90 int is_serdes_configured(enum srds_prtcl device
)
94 #ifdef CONFIG_SYS_FSL_SRDS_1
95 if (!serdes1_prtcl_map
[NONE
])
98 ret
|= serdes1_prtcl_map
[device
];
100 #ifdef CONFIG_SYS_FSL_SRDS_2
101 if (!serdes2_prtcl_map
[NONE
])
104 ret
|= serdes2_prtcl_map
[device
];
106 #ifdef CONFIG_SYS_FSL_SRDS_3
107 if (!serdes3_prtcl_map
[NONE
])
110 ret
|= serdes3_prtcl_map
[device
];
112 #ifdef CONFIG_SYS_FSL_SRDS_4
113 if (!serdes4_prtcl_map
[NONE
])
116 ret
|= serdes4_prtcl_map
[device
];
122 int serdes_get_first_lane(u32 sd
, enum srds_prtcl device
)
124 const ccsr_gur_t
*gur
= (void __iomem
*)(CONFIG_SYS_MPC85xx_GUTS_ADDR
);
125 u32 cfg
= in_be32(&gur
->rcwsr
[4]);
129 #ifdef CONFIG_SYS_FSL_SRDS_1
131 cfg
&= FSL_CORENET2_RCWSR4_SRDS1_PRTCL
;
132 cfg
>>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT
;
135 #ifdef CONFIG_SYS_FSL_SRDS_2
137 cfg
&= FSL_CORENET2_RCWSR4_SRDS2_PRTCL
;
138 cfg
>>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT
;
141 #ifdef CONFIG_SYS_FSL_SRDS_3
143 cfg
&= FSL_CORENET2_RCWSR4_SRDS3_PRTCL
;
144 cfg
>>= FSL_CORENET2_RCWSR4_SRDS3_PRTCL_SHIFT
;
147 #ifdef CONFIG_SYS_FSL_SRDS_4
149 cfg
&= FSL_CORENET2_RCWSR4_SRDS4_PRTCL
;
150 cfg
>>= FSL_CORENET2_RCWSR4_SRDS4_PRTCL_SHIFT
;
154 printf("invalid SerDes%d\n", sd
);
157 /* Is serdes enabled at all? */
158 if (unlikely(cfg
== 0))
161 for (i
= 0; i
< SRDS_MAX_LANES
; i
++) {
162 if (serdes_get_prtcl(sd
, cfg
, i
) == device
)
182 #define FUSE_VAL_MASK 0x00000003
183 #define FUSE_VAL_SHIFT 30
184 #define CR0_DCBIAS_SHIFT 5
185 #define CR1_FCAP_SHIFT 15
186 #define CR1_BCAP_SHIFT 29
187 #define FCAP_MASK 0x001F8000
188 #define BCAP_MASK 0x20000000
189 #define BCAP_OVD_MASK 0x10000000
190 #define BYP_CAL_MASK 0x02000000
192 void serdes_init(u32 sd
, u32 sd_addr
, u32 sd_prctl_mask
, u32 sd_prctl_shift
,
193 u8 serdes_prtcl_map
[SERDES_PRCTL_COUNT
])
195 ccsr_gur_t
*gur
= (void __iomem
*)(CONFIG_SYS_MPC85xx_GUTS_ADDR
);
199 if (serdes_prtcl_map
[NONE
])
202 memset(serdes_prtcl_map
, 0, sizeof(u8
) * SERDES_PRCTL_COUNT
);
203 #ifdef CONFIG_SYS_FSL_ERRATUM_A007186
204 struct ccsr_sfp_regs __iomem
*sfp_regs
=
205 (struct ccsr_sfp_regs __iomem
*)(CONFIG_SYS_SFP_ADDR
);
206 u32 pll_num
, pll_status
, bc
, dc
, fc
, pll_cr_upd
, pll_cr0
, pll_cr1
;
207 u32 bc_status
, fc_status
, dc_status
, pll_sr2
;
208 serdes_corenet_t __iomem
*srds_regs
= (void *)sd_addr
;
212 cfg
= in_be32(&gur
->rcwsr
[4]) & sd_prctl_mask
;
215 * Freescale Scratch Pad Fuse Register n (SFP_FSPFR0)
216 * The workaround requires factory pre-set SerDes calibration values to be
217 * read from a fuse block(Freescale Scratch Pad Fuse Register SFP_FSPFR0)
218 * These values have been shown to work across the
219 * entire temperature range for all SerDes. These values are then written into
220 * the SerDes registers to calibrate the SerDes PLL.
222 * This workaround for the protocols and rates that only have the Ring VCO.
224 #ifdef CONFIG_SYS_FSL_ERRATUM_A007186
225 sfp_spfr0
= in_be32(&sfp_regs
->fsl_spfr0
);
226 debug("A007186: sfp_spfr0= %x\n", sfp_spfr0
);
228 sel
= (sfp_spfr0
>> FUSE_VAL_SHIFT
) & FUSE_VAL_MASK
;
230 if (has_erratum_a007186() && (sel
== 0x01 || sel
== 0x02)) {
231 for (pll_num
= 0; pll_num
< SRDS_MAX_BANK
; pll_num
++) {
232 pll_status
= in_be32(&srds_regs
->bank
[pll_num
].pllcr0
);
233 debug("A007186: pll_num=%x pllcr0=%x\n",
234 pll_num
, pll_status
);
236 /* Read factory pre-set SerDes calibration values
237 * from fuse block(SFP scratch register-sfp_spfr0)
239 switch (pll_status
& SRDS_PLLCR0_FRATE_SEL_MASK
) {
240 case SRDS_PLLCR0_FRATE_SEL_3_0
:
241 case SRDS_PLLCR0_FRATE_SEL_3_072
:
242 debug("A007186: 3.0/3.072 protocol rate\n");
243 bc
= (sfp_spfr0
>> BC1_SHIFT
) & BC_MASK
;
244 dc
= (sfp_spfr0
>> DC1_SHIFT
) & DC_MASK
;
245 fc
= (sfp_spfr0
>> FC1_SHIFT
) & FC_MASK
;
247 case SRDS_PLLCR0_FRATE_SEL_3_125
:
248 debug("A007186: 3.125 protocol rate\n");
249 bc
= (sfp_spfr0
>> BC2_SHIFT
) & BC_MASK
;
250 dc
= (sfp_spfr0
>> DC2_SHIFT
) & DC_MASK
;
251 fc
= (sfp_spfr0
>> FC2_SHIFT
) & FC_MASK
;
253 case SRDS_PLLCR0_FRATE_SEL_3_75
:
254 debug("A007186: 3.75 protocol rate\n");
255 bc
= (sfp_spfr0
>> BC1_SHIFT
) & BC_MASK
;
256 dc
= (sfp_spfr0
>> DC1_SHIFT
) & DC_MASK
;
257 fc
= (sfp_spfr0
>> FC1_SHIFT
) & FC_MASK
;
264 /* Write SRDSxPLLnCR1[11:16] = FC
265 * Write SRDSxPLLnCR1[2] = BC
267 pll_cr1
= in_be32(&srds_regs
->bank
[pll_num
].pllcr1
);
268 pll_cr_upd
= (((bc
<< CR1_BCAP_SHIFT
) & BCAP_MASK
) |
269 ((fc
<< CR1_FCAP_SHIFT
) & FCAP_MASK
));
270 out_be32(&srds_regs
->bank
[pll_num
].pllcr1
,
271 (pll_cr_upd
| pll_cr1
));
272 debug("A007186: pll_num=%x Updated PLLCR1=%x\n",
273 pll_num
, (pll_cr_upd
| pll_cr1
));
274 /* Write SRDSxPLLnCR0[24:26] = DC
276 pll_cr0
= in_be32(&srds_regs
->bank
[pll_num
].pllcr0
);
277 out_be32(&srds_regs
->bank
[pll_num
].pllcr0
,
278 pll_cr0
| (dc
<< CR0_DCBIAS_SHIFT
));
279 debug("A007186: pll_num=%x, Updated PLLCR0=%x\n",
280 pll_num
, (pll_cr0
| (dc
<< CR0_DCBIAS_SHIFT
)));
281 /* Write SRDSxPLLnCR1[3] = 1
282 * Write SRDSxPLLnCR1[6] = 1
284 pll_cr1
= in_be32(&srds_regs
->bank
[pll_num
].pllcr1
);
285 pll_cr_upd
= (BCAP_OVD_MASK
| BYP_CAL_MASK
);
286 out_be32(&srds_regs
->bank
[pll_num
].pllcr1
,
287 (pll_cr_upd
| pll_cr1
));
288 debug("A007186: pll_num=%x Updated PLLCR1=%x\n",
289 pll_num
, (pll_cr_upd
| pll_cr1
));
292 /* Read the status Registers */
293 /* Verify SRDSxPLLnSR2[8] = BC */
294 pll_sr2
= in_be32(&srds_regs
->bank
[pll_num
].pllsr2
);
295 debug("A007186: pll_num=%x pllsr2=%x\n",
297 bc_status
= (pll_sr2
>> 23) & BC_MASK
;
299 debug("BC mismatch\n");
300 fc_status
= (pll_sr2
>> 16) & FC_MASK
;
302 debug("FC mismatch\n");
303 pll_cr0
= in_be32(&srds_regs
->bank
[pll_num
].pllcr0
);
304 out_be32(&srds_regs
->bank
[pll_num
].pllcr0
, pll_cr0
|
306 pll_sr2
= in_be32(&srds_regs
->bank
[pll_num
].pllsr2
);
307 dc_status
= (pll_sr2
>> 17) & DC_MASK
;
309 debug("DC mismatch\n");
310 pll_cr0
= in_be32(&srds_regs
->bank
[pll_num
].pllcr0
);
311 out_be32(&srds_regs
->bank
[pll_num
].pllcr0
, pll_cr0
&
315 /* Wait 750us to verify the PLL is locked
316 * by checking SRDSxPLLnCR0[8] = 1.
319 pll_status
= in_be32(&srds_regs
->bank
[pll_num
].pllcr0
);
320 debug("A007186: pll_num=%x pllcr0=%x\n",
321 pll_num
, pll_status
);
323 if ((pll_status
& SRDS_PLLCR0_PLL_LCK
) == 0)
324 printf("A007186 Serdes PLL not locked\n");
326 debug("A007186 Serdes PLL locked\n");
331 cfg
>>= sd_prctl_shift
;
332 printf("Using SERDES%d Protocol: %d (0x%x)\n", sd
+ 1, cfg
, cfg
);
333 if (!is_serdes_prtcl_valid(sd
, cfg
))
334 printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd
+ 1, cfg
);
336 for (lane
= 0; lane
< SRDS_MAX_LANES
; lane
++) {
337 enum srds_prtcl lane_prtcl
= serdes_get_prtcl(sd
, cfg
, lane
);
338 if (unlikely(lane_prtcl
>= SERDES_PRCTL_COUNT
))
339 debug("Unknown SerDes lane protocol %d\n", lane_prtcl
);
341 serdes_prtcl_map
[lane_prtcl
] = 1;
344 /* Set the first element to indicate serdes has been initialized */
345 serdes_prtcl_map
[NONE
] = 1;
348 void fsl_serdes_init(void)
351 #ifdef CONFIG_SYS_FSL_SRDS_1
352 serdes_init(FSL_SRDS_1
,
353 CONFIG_SYS_FSL_CORENET_SERDES_ADDR
,
354 FSL_CORENET2_RCWSR4_SRDS1_PRTCL
,
355 FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT
,
358 #ifdef CONFIG_SYS_FSL_SRDS_2
359 serdes_init(FSL_SRDS_2
,
360 CONFIG_SYS_FSL_CORENET_SERDES_ADDR
+ FSL_SRDS_2
* 0x1000,
361 FSL_CORENET2_RCWSR4_SRDS2_PRTCL
,
362 FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT
,
365 #ifdef CONFIG_SYS_FSL_SRDS_3
366 serdes_init(FSL_SRDS_3
,
367 CONFIG_SYS_FSL_CORENET_SERDES_ADDR
+ FSL_SRDS_3
* 0x1000,
368 FSL_CORENET2_RCWSR4_SRDS3_PRTCL
,
369 FSL_CORENET2_RCWSR4_SRDS3_PRTCL_SHIFT
,
372 #ifdef CONFIG_SYS_FSL_SRDS_4
373 serdes_init(FSL_SRDS_4
,
374 CONFIG_SYS_FSL_CORENET_SERDES_ADDR
+ FSL_SRDS_4
* 0x1000,
375 FSL_CORENET2_RCWSR4_SRDS4_PRTCL
,
376 FSL_CORENET2_RCWSR4_SRDS4_PRTCL_SHIFT
,
382 const char *serdes_clock_to_string(u32 clock
)
385 case SRDS_PLLCR0_RFCK_SEL_100
:
387 case SRDS_PLLCR0_RFCK_SEL_125
:
389 case SRDS_PLLCR0_RFCK_SEL_156_25
:
391 case SRDS_PLLCR0_RFCK_SEL_161_13
:
392 return "161.1328123";
394 #if defined(CONFIG_T4240QDS)