xref: /OK3568_Linux_fs/u-boot/board/technologic/ts4600/iomux.c (revision 4882a59341e53eb6f0b4789bf948001014eff981)

/*
 * (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));
}