iomux.c
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/*
* (C) Copyright 2016 Savoir-faire Linux Inc.
*
* Author: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
*
* Based on work from TS7680 code by:
* Kris Bahnsen <kris@embeddedarm.com>
* Mark Featherston <mark@embeddedarm.com>
* https://github.com/embeddedarm/u-boot/tree/master/board/technologic/ts7680
*
* Derived from MX28EVK code by
* Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <config.h>
#include <asm/io.h>
#include <asm/arch/iomux-mx28.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
#define MUX_CONFIG_SSP0 (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL)
const iomux_cfg_t iomux_setup[] = {
/* DUART */
MX28_PAD_PWM0__DUART_RX,
MX28_PAD_PWM1__DUART_TX,
/* MMC0 */
MX28_PAD_SSP0_DATA0__SSP0_D0 | MUX_CONFIG_SSP0,
MX28_PAD_SSP0_DATA1__SSP0_D1 | MUX_CONFIG_SSP0,
MX28_PAD_SSP0_DATA2__SSP0_D2 | MUX_CONFIG_SSP0,
MX28_PAD_SSP0_DATA3__SSP0_D3 | MUX_CONFIG_SSP0,
MX28_PAD_SSP0_CMD__SSP0_CMD | MUX_CONFIG_SSP0,
MX28_PAD_SSP0_SCK__SSP0_SCK |
(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
/* MMC0 slot power enable */
MX28_PAD_PWM3__GPIO_3_28 |
(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
/* EMI */
MX28_PAD_EMI_D00__EMI_DATA0 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D01__EMI_DATA1 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D02__EMI_DATA2 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D03__EMI_DATA3 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D04__EMI_DATA4 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D05__EMI_DATA5 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D06__EMI_DATA6 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D07__EMI_DATA7 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D08__EMI_DATA8 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D09__EMI_DATA9 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D10__EMI_DATA10 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D11__EMI_DATA11 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D12__EMI_DATA12 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D13__EMI_DATA13 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D14__EMI_DATA14 | MUX_CONFIG_EMI,
MX28_PAD_EMI_D15__EMI_DATA15 | MUX_CONFIG_EMI,
MX28_PAD_EMI_ODT0__EMI_ODT0 | MUX_CONFIG_EMI,
MX28_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI,
MX28_PAD_EMI_ODT1__EMI_ODT1 | MUX_CONFIG_EMI,
MX28_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI,
MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK | MUX_CONFIG_EMI,
MX28_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI,
MX28_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI,
MX28_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI,
MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN | MUX_CONFIG_EMI,
MX28_PAD_EMI_A00__EMI_ADDR0 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A01__EMI_ADDR1 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A02__EMI_ADDR2 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A03__EMI_ADDR3 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A04__EMI_ADDR4 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A05__EMI_ADDR5 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A06__EMI_ADDR6 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A07__EMI_ADDR7 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A08__EMI_ADDR8 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A09__EMI_ADDR9 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A10__EMI_ADDR10 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A11__EMI_ADDR11 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A12__EMI_ADDR12 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A13__EMI_ADDR13 | MUX_CONFIG_EMI,
MX28_PAD_EMI_A14__EMI_ADDR14 | MUX_CONFIG_EMI,
MX28_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI,
MX28_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI,
MX28_PAD_EMI_BA2__EMI_BA2 | MUX_CONFIG_EMI,
MX28_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI,
MX28_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI,
MX28_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI,
MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI,
MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI,
MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
/* I2C */
MX28_PAD_I2C0_SCL__I2C0_SCL,
MX28_PAD_I2C0_SDA__I2C0_SDA,
};
#define HW_DRAM_CTL29 (0x74 >> 2)
#define CS_MAP 0xf
#define COLUMN_SIZE 0x2
#define ADDR_PINS 0x1
#define APREBIT 0xa
#define HW_DRAM_CTL29_CONFIG (CS_MAP << 24 | COLUMN_SIZE << 16 | \
ADDR_PINS << 8 | APREBIT)
#define HW_DRAM_CTL39 (0x9c >> 2)
#define TFAW 0xb
#define TDLL 0xc8
#define HW_DRAM_CTL39_CONFIG (TFAW << 24 | TDLL)
#define HW_DRAM_CTL41 (0xa4 >> 2)
#define TPDEX 0x2
#define TRCD_INT 0x4
#define TRC 0xd
#define HW_DRAM_CTL41_CONFIG (TPDEX << 24 | TRCD_INT << 8 | TRC)
#define HW_DRAM_CTL42 (0xa8 >> 2)
#define TRAS_MAX 0x36a6
#define TRAS_MIN 0xa
#define HW_DRAM_CTL42_CONFIG (TRAS_MAX << 8 | TRAS_MIN)
#define HW_DRAM_CTL43 (0xac >> 2)
#define TRP 0x4
#define TRFC 0x27
#define TREF 0x2a0
#define HW_DRAM_CTL43_CONFIG (TRP << 24 | TRFC << 16 | TREF)
void mxs_adjust_memory_params(uint32_t *dram_vals)
{
dram_vals[HW_DRAM_CTL29] = HW_DRAM_CTL29_CONFIG;
dram_vals[HW_DRAM_CTL39] = HW_DRAM_CTL39_CONFIG;
dram_vals[HW_DRAM_CTL41] = HW_DRAM_CTL41_CONFIG;
dram_vals[HW_DRAM_CTL42] = HW_DRAM_CTL42_CONFIG;
dram_vals[HW_DRAM_CTL43] = HW_DRAM_CTL43_CONFIG;
}
void board_init_ll(const uint32_t arg, const uint32_t *resptr)
{
mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
}