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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / dcefd82cbccd854eba1fbcef806da2dc5abd7e52 / . / cpu / mpc83xx / serdes.c
blob: 64033fe4c35dec86b046f6f745ba122d0bc7fc65 [file] [log] [blame]
Anton Vorontsov453316a2008-03-24 17:40:32 +0300[diff] [blame]1/*
2 * Freescale SerDes initialization routine
3 *
Kumar Gala4c2e3da2009-07-28 21:49:52 -0500[diff] [blame]4 * Copyright (C) 2007 Freescale Semicondutor, Inc.
Anton Vorontsov13ba7882009-09-02 17:58:48 +0400[diff] [blame]5 * Copyright (C) 2008 MontaVista Software, Inc.
Anton Vorontsov453316a2008-03-24 17:40:32 +0300[diff] [blame]6 *
7 * Author: Li Yang <leoli@freescale.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15#include <config.h>
16#include <common.h>
17#include <asm/io.h>
18#include <asm/fsl_serdes.h>
19
20/* SerDes registers */
21#define FSL_SRDSCR0_OFFS 0x0
22#define FSL_SRDSCR0_DPP_1V2 0x00008800
23#define FSL_SRDSCR1_OFFS 0x4
24#define FSL_SRDSCR1_PLLBW 0x00000040
25#define FSL_SRDSCR2_OFFS 0x8
26#define FSL_SRDSCR2_VDD_1V2 0x00800000
27#define FSL_SRDSCR2_SEIC_MASK 0x00001c1c
28#define FSL_SRDSCR2_SEIC_SATA 0x00001414
29#define FSL_SRDSCR2_SEIC_PEX 0x00001010
30#define FSL_SRDSCR2_SEIC_SGMII 0x00000101
31#define FSL_SRDSCR3_OFFS 0xc
32#define FSL_SRDSCR3_KFR_SATA 0x10100000
33#define FSL_SRDSCR3_KPH_SATA 0x04040000
34#define FSL_SRDSCR3_SDFM_SATA_PEX 0x01010000
35#define FSL_SRDSCR3_SDTXL_SATA 0x00000505
36#define FSL_SRDSCR4_OFFS 0x10
37#define FSL_SRDSCR4_PROT_SATA 0x00000808
38#define FSL_SRDSCR4_PROT_PEX 0x00000101
39#define FSL_SRDSCR4_PROT_SGMII 0x00000505
40#define FSL_SRDSCR4_PLANE_X2 0x01000000
41#define FSL_SRDSRSTCTL_OFFS 0x20
42#define FSL_SRDSRSTCTL_RST 0x80000000
43#define FSL_SRDSRSTCTL_SATA_RESET 0xf
44
Anton Vorontsov6f9cc662008-10-02 18:31:56 +0400[diff] [blame]45void fsl_setup_serdes(u32 offset, char proto, u32 rfcks, char vdd)
Anton Vorontsov453316a2008-03-24 17:40:32 +0300[diff] [blame]46{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]47 void *regs = (void *)CONFIG_SYS_IMMR + offset;
Anton Vorontsov453316a2008-03-24 17:40:32 +0300[diff] [blame]48 u32 tmp;
49
50 /* 1.0V corevdd */
51 if (vdd) {
52 /* DPPE/DPPA = 0 */
53 tmp = in_be32(regs + FSL_SRDSCR0_OFFS);
54 tmp &= ~FSL_SRDSCR0_DPP_1V2;
55 out_be32(regs + FSL_SRDSCR0_OFFS, tmp);
56
57 /* VDD = 0 */
58 tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
59 tmp &= ~FSL_SRDSCR2_VDD_1V2;
60 out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
61 }
62
63 /* protocol specific configuration */
64 switch (proto) {
65 case FSL_SERDES_PROTO_SATA:
66 /* Set and clear reset bits */
67 tmp = in_be32(regs + FSL_SRDSRSTCTL_OFFS);
68 tmp |= FSL_SRDSRSTCTL_SATA_RESET;
69 out_be32(regs + FSL_SRDSRSTCTL_OFFS, tmp);
70 udelay(1000);
71 tmp &= ~FSL_SRDSRSTCTL_SATA_RESET;
72 out_be32(regs + FSL_SRDSRSTCTL_OFFS, tmp);
73
74 /* Configure SRDSCR1 */
75 tmp = in_be32(regs + FSL_SRDSCR1_OFFS);
76 tmp &= ~FSL_SRDSCR1_PLLBW;
77 out_be32(regs + FSL_SRDSCR1_OFFS, tmp);
78
79 /* Configure SRDSCR2 */
80 tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
81 tmp &= ~FSL_SRDSCR2_SEIC_MASK;
82 tmp |= FSL_SRDSCR2_SEIC_SATA;
83 out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
84
85 /* Configure SRDSCR3 */
86 tmp = FSL_SRDSCR3_KFR_SATA | FSL_SRDSCR3_KPH_SATA |
87 FSL_SRDSCR3_SDFM_SATA_PEX |
88 FSL_SRDSCR3_SDTXL_SATA;
89 out_be32(regs + FSL_SRDSCR3_OFFS, tmp);
90
91 /* Configure SRDSCR4 */
92 tmp = rfcks | FSL_SRDSCR4_PROT_SATA;
93 out_be32(regs + FSL_SRDSCR4_OFFS, tmp);
94 break;
95 case FSL_SERDES_PROTO_PEX:
96 case FSL_SERDES_PROTO_PEX_X2:
97 /* Configure SRDSCR1 */
98 tmp = in_be32(regs + FSL_SRDSCR1_OFFS);
99 tmp |= FSL_SRDSCR1_PLLBW;
100 out_be32(regs + FSL_SRDSCR1_OFFS, tmp);
101
102 /* Configure SRDSCR2 */
103 tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
104 tmp &= ~FSL_SRDSCR2_SEIC_MASK;
105 tmp |= FSL_SRDSCR2_SEIC_PEX;
106 out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
107
108 /* Configure SRDSCR3 */
109 tmp = FSL_SRDSCR3_SDFM_SATA_PEX;
110 out_be32(regs + FSL_SRDSCR3_OFFS, tmp);
111
112 /* Configure SRDSCR4 */
113 tmp = rfcks | FSL_SRDSCR4_PROT_PEX;
114 if (proto == FSL_SERDES_PROTO_PEX_X2)
115 tmp |= FSL_SRDSCR4_PLANE_X2;
116 out_be32(regs + FSL_SRDSCR4_OFFS, tmp);
117 break;
118 case FSL_SERDES_PROTO_SGMII:
119 /* Configure SRDSCR1 */
120 tmp = in_be32(regs + FSL_SRDSCR1_OFFS);
121 tmp &= ~FSL_SRDSCR1_PLLBW;
122 out_be32(regs + FSL_SRDSCR1_OFFS, tmp);
123
124 /* Configure SRDSCR2 */
125 tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
126 tmp &= ~FSL_SRDSCR2_SEIC_MASK;
127 tmp |= FSL_SRDSCR2_SEIC_SGMII;
128 out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
129
130 /* Configure SRDSCR3 */
131 out_be32(regs + FSL_SRDSCR3_OFFS, 0);
132
133 /* Configure SRDSCR4 */
134 tmp = rfcks | FSL_SRDSCR4_PROT_SGMII;
135 out_be32(regs + FSL_SRDSCR4_OFFS, tmp);
136 break;
137 default:
138 return;
139 }
140
141 /* Do a software reset */
142 tmp = in_be32(regs + FSL_SRDSRSTCTL_OFFS);
143 tmp |= FSL_SRDSRSTCTL_RST;
144 out_be32(regs + FSL_SRDSRSTCTL_OFFS, tmp);
145}