uboot/board/technologic/ts4600/iomux.c
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   1/*
   2 * (C) Copyright 2016 Savoir-faire Linux Inc.
   3 *
   4 * Author: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
   5 *
   6 * Based on work from TS7680 code by:
   7 *   Kris Bahnsen <kris@embeddedarm.com>
   8 *   Mark Featherston <mark@embeddedarm.com>
   9 *   https://github.com/embeddedarm/u-boot/tree/master/board/technologic/ts7680
  10 *
  11 * Derived from MX28EVK code by
  12 *   Freescale Semiconductor, Inc.
  13 *
  14 * SPDX-License-Identifier:     GPL-2.0+
  15 */
  16
  17#include <common.h>
  18#include <config.h>
  19#include <asm/io.h>
  20#include <asm/arch/iomux-mx28.h>
  21#include <asm/arch/imx-regs.h>
  22#include <asm/arch/sys_proto.h>
  23
  24#define MUX_CONFIG_SSP0 (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
  25#define MUX_CONFIG_EMI  (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL)
  26
  27const iomux_cfg_t iomux_setup[] = {
  28        /* DUART */
  29        MX28_PAD_PWM0__DUART_RX,
  30        MX28_PAD_PWM1__DUART_TX,
  31
  32        /* MMC0 */
  33        MX28_PAD_SSP0_DATA0__SSP0_D0 | MUX_CONFIG_SSP0,
  34        MX28_PAD_SSP0_DATA1__SSP0_D1 | MUX_CONFIG_SSP0,
  35        MX28_PAD_SSP0_DATA2__SSP0_D2 | MUX_CONFIG_SSP0,
  36        MX28_PAD_SSP0_DATA3__SSP0_D3 | MUX_CONFIG_SSP0,
  37        MX28_PAD_SSP0_CMD__SSP0_CMD | MUX_CONFIG_SSP0,
  38        MX28_PAD_SSP0_SCK__SSP0_SCK |
  39                (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
  40
  41        /* MMC0 slot power enable */
  42        MX28_PAD_PWM3__GPIO_3_28 |
  43                (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  44
  45        /* EMI */
  46        MX28_PAD_EMI_D00__EMI_DATA0 | MUX_CONFIG_EMI,
  47        MX28_PAD_EMI_D01__EMI_DATA1 | MUX_CONFIG_EMI,
  48        MX28_PAD_EMI_D02__EMI_DATA2 | MUX_CONFIG_EMI,
  49        MX28_PAD_EMI_D03__EMI_DATA3 | MUX_CONFIG_EMI,
  50        MX28_PAD_EMI_D04__EMI_DATA4 | MUX_CONFIG_EMI,
  51        MX28_PAD_EMI_D05__EMI_DATA5 | MUX_CONFIG_EMI,
  52        MX28_PAD_EMI_D06__EMI_DATA6 | MUX_CONFIG_EMI,
  53        MX28_PAD_EMI_D07__EMI_DATA7 | MUX_CONFIG_EMI,
  54        MX28_PAD_EMI_D08__EMI_DATA8 | MUX_CONFIG_EMI,
  55        MX28_PAD_EMI_D09__EMI_DATA9 | MUX_CONFIG_EMI,
  56        MX28_PAD_EMI_D10__EMI_DATA10 | MUX_CONFIG_EMI,
  57        MX28_PAD_EMI_D11__EMI_DATA11 | MUX_CONFIG_EMI,
  58        MX28_PAD_EMI_D12__EMI_DATA12 | MUX_CONFIG_EMI,
  59        MX28_PAD_EMI_D13__EMI_DATA13 | MUX_CONFIG_EMI,
  60        MX28_PAD_EMI_D14__EMI_DATA14 | MUX_CONFIG_EMI,
  61        MX28_PAD_EMI_D15__EMI_DATA15 | MUX_CONFIG_EMI,
  62        MX28_PAD_EMI_ODT0__EMI_ODT0 | MUX_CONFIG_EMI,
  63        MX28_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI,
  64        MX28_PAD_EMI_ODT1__EMI_ODT1 | MUX_CONFIG_EMI,
  65        MX28_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI,
  66        MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK | MUX_CONFIG_EMI,
  67        MX28_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI,
  68        MX28_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI,
  69        MX28_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI,
  70        MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN | MUX_CONFIG_EMI,
  71        MX28_PAD_EMI_A00__EMI_ADDR0 | MUX_CONFIG_EMI,
  72        MX28_PAD_EMI_A01__EMI_ADDR1 | MUX_CONFIG_EMI,
  73        MX28_PAD_EMI_A02__EMI_ADDR2 | MUX_CONFIG_EMI,
  74        MX28_PAD_EMI_A03__EMI_ADDR3 | MUX_CONFIG_EMI,
  75        MX28_PAD_EMI_A04__EMI_ADDR4 | MUX_CONFIG_EMI,
  76        MX28_PAD_EMI_A05__EMI_ADDR5 | MUX_CONFIG_EMI,
  77        MX28_PAD_EMI_A06__EMI_ADDR6 | MUX_CONFIG_EMI,
  78        MX28_PAD_EMI_A07__EMI_ADDR7 | MUX_CONFIG_EMI,
  79        MX28_PAD_EMI_A08__EMI_ADDR8 | MUX_CONFIG_EMI,
  80        MX28_PAD_EMI_A09__EMI_ADDR9 | MUX_CONFIG_EMI,
  81        MX28_PAD_EMI_A10__EMI_ADDR10 | MUX_CONFIG_EMI,
  82        MX28_PAD_EMI_A11__EMI_ADDR11 | MUX_CONFIG_EMI,
  83        MX28_PAD_EMI_A12__EMI_ADDR12 | MUX_CONFIG_EMI,
  84        MX28_PAD_EMI_A13__EMI_ADDR13 | MUX_CONFIG_EMI,
  85        MX28_PAD_EMI_A14__EMI_ADDR14 | MUX_CONFIG_EMI,
  86        MX28_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI,
  87        MX28_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI,
  88        MX28_PAD_EMI_BA2__EMI_BA2 | MUX_CONFIG_EMI,
  89        MX28_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI,
  90        MX28_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI,
  91        MX28_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI,
  92        MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI,
  93        MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI,
  94        MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
  95
  96        /* I2C */
  97        MX28_PAD_I2C0_SCL__I2C0_SCL,
  98        MX28_PAD_I2C0_SDA__I2C0_SDA,
  99
 100};
 101
 102#define HW_DRAM_CTL29   (0x74 >> 2)
 103#define CS_MAP          0xf
 104#define COLUMN_SIZE     0x2
 105#define ADDR_PINS       0x1
 106#define APREBIT         0xa
 107
 108#define HW_DRAM_CTL29_CONFIG    (CS_MAP << 24 | COLUMN_SIZE << 16 | \
 109                                        ADDR_PINS << 8 | APREBIT)
 110
 111#define HW_DRAM_CTL39   (0x9c >> 2)
 112#define TFAW            0xb
 113#define TDLL            0xc8
 114
 115#define HW_DRAM_CTL39_CONFIG    (TFAW << 24 | TDLL)
 116
 117#define HW_DRAM_CTL41   (0xa4 >> 2)
 118#define TPDEX           0x2
 119#define TRCD_INT        0x4
 120#define TRC             0xd
 121
 122#define HW_DRAM_CTL41_CONFIG    (TPDEX << 24 | TRCD_INT << 8 | TRC)
 123
 124#define HW_DRAM_CTL42   (0xa8 >> 2)
 125#define TRAS_MAX        0x36a6
 126#define TRAS_MIN        0xa
 127
 128#define HW_DRAM_CTL42_CONFIG  (TRAS_MAX << 8 | TRAS_MIN)
 129
 130#define HW_DRAM_CTL43   (0xac >> 2)
 131#define TRP             0x4
 132#define TRFC            0x27
 133#define TREF            0x2a0
 134
 135#define HW_DRAM_CTL43_CONFIG (TRP << 24 | TRFC << 16 | TREF)
 136
 137void mxs_adjust_memory_params(uint32_t *dram_vals)
 138{
 139        dram_vals[HW_DRAM_CTL29] = HW_DRAM_CTL29_CONFIG;
 140        dram_vals[HW_DRAM_CTL39] = HW_DRAM_CTL39_CONFIG;
 141        dram_vals[HW_DRAM_CTL41] = HW_DRAM_CTL41_CONFIG;
 142        dram_vals[HW_DRAM_CTL42] = HW_DRAM_CTL42_CONFIG;
 143        dram_vals[HW_DRAM_CTL43] = HW_DRAM_CTL43_CONFIG;
 144}
 145
 146void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 147{
 148        mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 149}
 150