| Anton Vorontsov | 453316a | 2008-03-24 17:40:32 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Freescale SerDes initialization routine |
| 3 | * |
| 4 | * Copyright (C) 2007 Freescale Semicondutor, Inc. All rights reserved. |
| 5 | * Copyright (C) 2008 MontaVista Software, Inc. All rights reserved. |
| 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 | |
| 45 | void fsl_setup_serdes(u32 offset, char proto, char rfcks, char vdd) |
| 46 | { |
| 47 | void *regs = (void *)CFG_IMMR + offset; |
| 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 | } |