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u-boot/board/udoo/neo/neo.c
Breno Lima 792f186846 mx6sx: Add initial support for UDOO Neo Board 
UDOO Neo Board is a development board from Seco that has three models:
 - UDOO Neo Basic
 - UDOO Neo Basic Kick Starter
 - UDOO Neo Extended
 - UDOO Neo Full

All versions are based on the i.MX6 SoloX processor.

For more details about the UDOO Neo board, please refer to:
http://www.udoo.org/udoo-neo/

This work is based on a previous commit of Francesco Montefoschi
<francesco.monte@gmail.com>:
877b71184a

Only tested on the UDOO Neo Full board.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
2016-11-29 16:48:20 +01:00

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/*
* Copyright (C) 2014-2015 Freescale Semiconductor, Inc.
* Copyright (C) Jasbir Matharu
* Copyright (C) UDOO Team
*
* Author: Breno Lima <breno.lima@nxp.com>
* Author: Francesco Montefoschi <francesco.monte@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <asm/arch/crm_regs.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <spl.h>
#include <linux/sizes.h>
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
enum {
UDOO_NEO_TYPE_BASIC,
UDOO_NEO_TYPE_BASIC_KS,
UDOO_NEO_TYPE_FULL,
UDOO_NEO_TYPE_EXTENDED,
};
#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define WDOG_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_PKE | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm)
#define BOARD_DETECT_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_34ohm | PAD_CTL_HYS | PAD_CTL_SRE_FAST)
#define BOARD_DETECT_PAD_CFG (MUX_PAD_CTRL(BOARD_DETECT_PAD_CTRL) | \
MUX_MODE_SION)
int dram_init(void)
{
gd->ram_size = imx_ddr_size();
return 0;
}
static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_GPIO1_IO04__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_GPIO1_IO05__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static iomux_v3_cfg_t const usdhc2_pads[] = {
MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
/* CD pin */
MX6_PAD_SD1_DATA0__GPIO6_IO_2 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* Power */
MX6_PAD_SD1_CMD__GPIO6_IO_1 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static iomux_v3_cfg_t const board_recognition_pads[] = {
/*Connected to R184*/
MX6_PAD_NAND_READY_B__GPIO4_IO_13 | BOARD_DETECT_PAD_CFG,
/*Connected to R185*/
MX6_PAD_NAND_ALE__GPIO4_IO_0 | BOARD_DETECT_PAD_CFG,
};
static iomux_v3_cfg_t const usdhc3_pads[] = {
/* Configured for WLAN */
MX6_PAD_SD3_CLK__USDHC3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_CMD__USDHC3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DATA0__USDHC3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DATA1__USDHC3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DATA2__USDHC3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD3_DATA3__USDHC3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
};
static iomux_v3_cfg_t const wdog_b_pad = {
MX6_PAD_GPIO1_IO13__GPIO1_IO_13 | MUX_PAD_CTRL(WDOG_PAD_CTRL),
};
static iomux_v3_cfg_t const peri_3v3_pads[] = {
MX6_PAD_QSPI1A_DATA0__GPIO4_IO_16 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
int board_init(void)
{
/* Address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
/*
* Because kernel set WDOG_B mux before pad with the commone pinctrl
* framwork now and wdog reset will be triggered once set WDOG_B mux
* with default pad setting, we set pad setting here to workaround this.
* Since imx_iomux_v3_setup_pad also set mux before pad setting, we set
* as GPIO mux firstly here to workaround it.
*/
imx_iomux_v3_setup_pad(wdog_b_pad);
/* Enable PERI_3V3, which is used by SD2, ENET, LVDS, BT */
imx_iomux_v3_setup_multiple_pads(peri_3v3_pads,
ARRAY_SIZE(peri_3v3_pads));
/* Active high for ncp692 */
gpio_direction_output(IMX_GPIO_NR(4, 16) , 1);
return 0;
}
static int get_board_value(void)
{
int r184, r185;
imx_iomux_v3_setup_multiple_pads(board_recognition_pads,
ARRAY_SIZE(board_recognition_pads));
gpio_direction_input(IMX_GPIO_NR(4, 13));
gpio_direction_input(IMX_GPIO_NR(4, 0));
r184 = gpio_get_value(IMX_GPIO_NR(4, 13));
r185 = gpio_get_value(IMX_GPIO_NR(4, 0));
/*
* Machine selection -
* Machine r184, r185
* ---------------------------------
* Basic 0 0
* Basic Ks 0 1
* Full 1 0
* Extended 1 1
*/
return (r184 << 1) + r185;
}
int board_early_init_f(void)
{
setup_iomux_uart();
return 0;
}
static struct fsl_esdhc_cfg usdhc_cfg[2] = {
{USDHC2_BASE_ADDR, 0, 4},
{USDHC3_BASE_ADDR, 0, 4},
};
#define USDHC2_PWR_GPIO IMX_GPIO_NR(6, 1)
#define USDHC2_CD_GPIO IMX_GPIO_NR(6, 2)
int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
int ret = 0;
switch (cfg->esdhc_base) {
case USDHC2_BASE_ADDR:
ret = !gpio_get_value(USDHC2_CD_GPIO);
break;
}
return ret;
}
int board_mmc_init(bd_t *bis)
{
#ifndef CONFIG_SPL_BUILD
int i, ret;
/*
* According to the board_mmc_init() the following map is done:
* (U-boot device node) (Physical Port)
* mmc0 USDHC2
*/
for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
switch (i) {
case 0:
imx_iomux_v3_setup_multiple_pads(
usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
gpio_direction_input(USDHC2_CD_GPIO);
gpio_direction_output(USDHC2_PWR_GPIO, 1);
break;
case 1:
imx_iomux_v3_setup_multiple_pads(
usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
break;
default:
printf("Warning: you configured more USDHC controllers\
(%d) than supported by the board\n", i + 1);
return -EINVAL;
}
ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
if (ret) {
printf("Warning:\
failed to initialize mmc dev %d\n", i);
return ret;
}
}
return 0;
#else
struct src *src_regs = (struct src *)SRC_BASE_ADDR;
u32 val;
u32 port;
val = readl(&src_regs->sbmr1);
if ((val & 0xc0) != 0x40) {
printf("Not boot from USDHC!\n");
return -EINVAL;
}
port = (val >> 11) & 0x3;
printf("port %d\n", port);
switch (port) {
case 1:
imx_iomux_v3_setup_multiple_pads(
usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
gpio_direction_input(USDHC2_CD_GPIO);
gpio_direction_output(USDHC2_PWR_GPIO, 1);
break;
case 2:
imx_iomux_v3_setup_multiple_pads(
usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
usdhc_cfg[1].esdhc_base = USDHC3_BASE_ADDR;
break;
}
gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
#endif
}
char *board_string(void)
{
switch (get_board_value()) {
case UDOO_NEO_TYPE_BASIC:
return "BASIC";
case UDOO_NEO_TYPE_BASIC_KS:
return "BASICKS";
case UDOO_NEO_TYPE_FULL:
return "FULL";
case UDOO_NEO_TYPE_EXTENDED:
return "EXTENDED";
}
return "UNDEFINED";
}
int checkboard(void)
{
printf("Board: UDOO Neo %s\n", board_string());
return 0;
}
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
setenv("board_name", board_string());
#endif
return 0;
}
#ifdef CONFIG_SPL_BUILD
#include <libfdt.h>
#include <asm/arch/mx6-ddr.h>
static const struct mx6sx_iomux_ddr_regs mx6_ddr_ioregs = {
.dram_dqm0 = 0x00000028,
.dram_dqm1 = 0x00000028,
.dram_dqm2 = 0x00000028,
.dram_dqm3 = 0x00000028,
.dram_ras = 0x00000020,
.dram_cas = 0x00000020,
.dram_odt0 = 0x00000020,
.dram_odt1 = 0x00000020,
.dram_sdba2 = 0x00000000,
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
.dram_sdclk_0 = 0x00000030,
.dram_sdqs0 = 0x00000028,
.dram_sdqs1 = 0x00000028,
.dram_sdqs2 = 0x00000028,
.dram_sdqs3 = 0x00000028,
.dram_reset = 0x00000020,
};
static const struct mx6sx_iomux_grp_regs mx6_grp_ioregs = {
.grp_addds = 0x00000020,
.grp_ddrmode_ctl = 0x00020000,
.grp_ddrpke = 0x00000000,
.grp_ddrmode = 0x00020000,
.grp_b0ds = 0x00000028,
.grp_b1ds = 0x00000028,
.grp_ctlds = 0x00000020,
.grp_ddr_type = 0x000c0000,
.grp_b2ds = 0x00000028,
.grp_b3ds = 0x00000028,
};
static const struct mx6_mmdc_calibration neo_mmcd_calib = {
.p0_mpwldectrl0 = 0x000E000B,
.p0_mpwldectrl1 = 0x000E0010,
.p0_mpdgctrl0 = 0x41600158,
.p0_mpdgctrl1 = 0x01500140,
.p0_mprddlctl = 0x3A383E3E,
.p0_mpwrdlctl = 0x3A383C38,
};
static const struct mx6_mmdc_calibration neo_basic_mmcd_calib = {
.p0_mpwldectrl0 = 0x001E0022,
.p0_mpwldectrl1 = 0x001C0019,
.p0_mpdgctrl0 = 0x41540150,
.p0_mpdgctrl1 = 0x01440138,
.p0_mprddlctl = 0x403E4644,
.p0_mpwrdlctl = 0x3C3A4038,
};
/* MT41K256M16 */
static struct mx6_ddr3_cfg neo_mem_ddr = {
.mem_speed = 1600,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
/* MT41K128M16 */
static struct mx6_ddr3_cfg neo_basic_mem_ddr = {
.mem_speed = 1600,
.density = 2,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
static void ccgr_init(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
writel(0xFFFFFFFF, &ccm->CCGR0);
writel(0xFFFFFFFF, &ccm->CCGR1);
writel(0xFFFFFFFF, &ccm->CCGR2);
writel(0xFFFFFFFF, &ccm->CCGR3);
writel(0xFFFFFFFF, &ccm->CCGR4);
writel(0xFFFFFFFF, &ccm->CCGR5);
writel(0xFFFFFFFF, &ccm->CCGR6);
writel(0xFFFFFFFF, &ccm->CCGR7);
}
static void spl_dram_init(void)
{
int board = get_board_value();
struct mx6_ddr_sysinfo sysinfo = {
.dsize = 1, /* width of data bus: 1 = 32 bits */
.cs_density = 24,
.ncs = 1,
.cs1_mirror = 0,
.rtt_wr = 2,
.rtt_nom = 2, /* RTT_Nom = RZQ/2 */
.walat = 1, /* Write additional latency */
.ralat = 5, /* Read additional latency */
.mif3_mode = 3, /* Command prediction working mode */
.bi_on = 1, /* Bank interleaving enabled */
.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
};
mx6sx_dram_iocfg(32, &mx6_ddr_ioregs, &mx6_grp_ioregs);
if (board == UDOO_NEO_TYPE_BASIC || board == UDOO_NEO_TYPE_BASIC_KS)
mx6_dram_cfg(&sysinfo, &neo_basic_mmcd_calib,
&neo_basic_mem_ddr);
else
mx6_dram_cfg(&sysinfo, &neo_mmcd_calib, &neo_mem_ddr);
}
void board_init_f(ulong dummy)
{
ccgr_init();
/* setup AIPS and disable watchdog */
arch_cpu_init();
board_early_init_f();
/* setup GP timer */
timer_init();
/* UART clocks enabled and gd valid - init serial console */
preloader_console_init();
/* DDR initialization */
spl_dram_init();
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
/* load/boot image from boot device */
board_init_r(NULL, 0);
}
#endif
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