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https://source.denx.de/u-boot/u-boot.git
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509adc8b77
In the current u-boot code, the value of these fields are the reserved value (0b100), through the signal integrity measurement on freescale's board with these reserved setting, the signal eye is out of the recommended spec for non-transition amplitude at 500mV nominal. According to the errata for MPC8379E, we should make a change to the recommended setting from essentially nothing at this time to 0b001 for SATA. Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/*
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* Freescale SerDes initialization routine
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*
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* Copyright (C) 2007,2011 Freescale Semicondutor, Inc.
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* Copyright (C) 2008 MontaVista Software, Inc.
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*
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* Author: Li Yang <leoli@freescale.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <config.h>
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#include <common.h>
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#include <asm/io.h>
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#include <asm/fsl_mpc83xx_serdes.h>
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/* SerDes registers */
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#define FSL_SRDSCR0_OFFS 0x0
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#define FSL_SRDSCR0_DPP_1V2 0x00008800
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#define FSL_SRDSCR0_TXEQA_MASK 0x00007000
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#define FSL_SRDSCR0_TXEQA_SATA 0x00001000
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#define FSL_SRDSCR0_TXEQE_MASK 0x00000700
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#define FSL_SRDSCR0_TXEQE_SATA 0x00000100
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#define FSL_SRDSCR1_OFFS 0x4
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#define FSL_SRDSCR1_PLLBW 0x00000040
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#define FSL_SRDSCR2_OFFS 0x8
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#define FSL_SRDSCR2_VDD_1V2 0x00800000
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#define FSL_SRDSCR2_SEIC_MASK 0x00001c1c
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#define FSL_SRDSCR2_SEIC_SATA 0x00001414
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#define FSL_SRDSCR2_SEIC_PEX 0x00001010
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#define FSL_SRDSCR2_SEIC_SGMII 0x00000101
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#define FSL_SRDSCR3_OFFS 0xc
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#define FSL_SRDSCR3_KFR_SATA 0x10100000
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#define FSL_SRDSCR3_KPH_SATA 0x04040000
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#define FSL_SRDSCR3_SDFM_SATA_PEX 0x01010000
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#define FSL_SRDSCR3_SDTXL_SATA 0x00000505
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#define FSL_SRDSCR4_OFFS 0x10
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#define FSL_SRDSCR4_PROT_SATA 0x00000808
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#define FSL_SRDSCR4_PROT_PEX 0x00000101
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#define FSL_SRDSCR4_PROT_SGMII 0x00000505
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#define FSL_SRDSCR4_PLANE_X2 0x01000000
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#define FSL_SRDSRSTCTL_OFFS 0x20
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#define FSL_SRDSRSTCTL_RST 0x80000000
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#define FSL_SRDSRSTCTL_SATA_RESET 0xf
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void fsl_setup_serdes(u32 offset, char proto, u32 rfcks, char vdd)
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{
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void *regs = (void *)CONFIG_SYS_IMMR + offset;
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u32 tmp;
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/* 1.0V corevdd */
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if (vdd) {
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/* DPPE/DPPA = 0 */
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tmp = in_be32(regs + FSL_SRDSCR0_OFFS);
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tmp &= ~FSL_SRDSCR0_DPP_1V2;
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out_be32(regs + FSL_SRDSCR0_OFFS, tmp);
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/* VDD = 0 */
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tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
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tmp &= ~FSL_SRDSCR2_VDD_1V2;
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out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
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}
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/* protocol specific configuration */
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switch (proto) {
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case FSL_SERDES_PROTO_SATA:
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/* Set and clear reset bits */
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tmp = in_be32(regs + FSL_SRDSRSTCTL_OFFS);
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tmp |= FSL_SRDSRSTCTL_SATA_RESET;
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out_be32(regs + FSL_SRDSRSTCTL_OFFS, tmp);
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udelay(1000);
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tmp &= ~FSL_SRDSRSTCTL_SATA_RESET;
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out_be32(regs + FSL_SRDSRSTCTL_OFFS, tmp);
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/* Configure SRDSCR0 */
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clrsetbits_be32(regs + FSL_SRDSCR0_OFFS,
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FSL_SRDSCR0_TXEQA_MASK | FSL_SRDSCR0_TXEQE_MASK,
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FSL_SRDSCR0_TXEQA_SATA | FSL_SRDSCR0_TXEQE_SATA);
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/* Configure SRDSCR1 */
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tmp = in_be32(regs + FSL_SRDSCR1_OFFS);
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tmp &= ~FSL_SRDSCR1_PLLBW;
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out_be32(regs + FSL_SRDSCR1_OFFS, tmp);
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/* Configure SRDSCR2 */
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tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
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tmp &= ~FSL_SRDSCR2_SEIC_MASK;
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tmp |= FSL_SRDSCR2_SEIC_SATA;
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out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
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/* Configure SRDSCR3 */
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tmp = FSL_SRDSCR3_KFR_SATA | FSL_SRDSCR3_KPH_SATA |
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FSL_SRDSCR3_SDFM_SATA_PEX |
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FSL_SRDSCR3_SDTXL_SATA;
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out_be32(regs + FSL_SRDSCR3_OFFS, tmp);
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/* Configure SRDSCR4 */
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tmp = rfcks | FSL_SRDSCR4_PROT_SATA;
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out_be32(regs + FSL_SRDSCR4_OFFS, tmp);
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break;
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case FSL_SERDES_PROTO_PEX:
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case FSL_SERDES_PROTO_PEX_X2:
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/* Configure SRDSCR1 */
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tmp = in_be32(regs + FSL_SRDSCR1_OFFS);
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tmp |= FSL_SRDSCR1_PLLBW;
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out_be32(regs + FSL_SRDSCR1_OFFS, tmp);
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/* Configure SRDSCR2 */
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tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
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tmp &= ~FSL_SRDSCR2_SEIC_MASK;
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tmp |= FSL_SRDSCR2_SEIC_PEX;
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out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
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/* Configure SRDSCR3 */
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tmp = FSL_SRDSCR3_SDFM_SATA_PEX;
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out_be32(regs + FSL_SRDSCR3_OFFS, tmp);
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/* Configure SRDSCR4 */
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tmp = rfcks | FSL_SRDSCR4_PROT_PEX;
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if (proto == FSL_SERDES_PROTO_PEX_X2)
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tmp |= FSL_SRDSCR4_PLANE_X2;
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out_be32(regs + FSL_SRDSCR4_OFFS, tmp);
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break;
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case FSL_SERDES_PROTO_SGMII:
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/* Configure SRDSCR1 */
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tmp = in_be32(regs + FSL_SRDSCR1_OFFS);
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tmp &= ~FSL_SRDSCR1_PLLBW;
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out_be32(regs + FSL_SRDSCR1_OFFS, tmp);
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/* Configure SRDSCR2 */
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tmp = in_be32(regs + FSL_SRDSCR2_OFFS);
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tmp &= ~FSL_SRDSCR2_SEIC_MASK;
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tmp |= FSL_SRDSCR2_SEIC_SGMII;
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out_be32(regs + FSL_SRDSCR2_OFFS, tmp);
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/* Configure SRDSCR3 */
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out_be32(regs + FSL_SRDSCR3_OFFS, 0);
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/* Configure SRDSCR4 */
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tmp = rfcks | FSL_SRDSCR4_PROT_SGMII;
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out_be32(regs + FSL_SRDSCR4_OFFS, tmp);
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break;
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default:
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return;
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}
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/* Do a software reset */
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tmp = in_be32(regs + FSL_SRDSRSTCTL_OFFS);
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tmp |= FSL_SRDSRSTCTL_RST;
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out_be32(regs + FSL_SRDSRSTCTL_OFFS, tmp);
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}
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