u-boot/board/purism/librem5/spl.c
Angus Ainslie 466a9ea2a1 board: purism: add the Purism Librem5 phone
Initial commit of Librem5 u-boot and SPL

Signed-off-by: Angus Ainslie <angus@akkea.ca>
Co-developed-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Reviewed-by: Fabio Estevam <festevam@denx.de>
2022-09-18 22:56:10 +02:00

592 lines
15 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018 NXP
* Copyright 2021 Purism
*/
#include <common.h>
#include <asm/io.h>
#include <errno.h>
#include <asm/io.h>
#include <asm/arch/ddr.h>
#include <asm/arch/imx8mq_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/clock.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/gpio.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <fsl_esdhc_imx.h>
#include <mmc.h>
#include <power/pmic.h>
#include <power/bd71837.h>
#include <hang.h>
#include <init.h>
#include <spl.h>
#include <usb.h>
#include <dwc3-uboot.h>
#include <linux/delay.h>
#include "librem5.h"
DECLARE_GLOBAL_DATA_PTR;
void spl_dram_init(void)
{
/* ddr init */
if ((get_cpu_rev() & 0xfff) == CHIP_REV_2_1)
ddr_init(&dram_timing);
else
ddr_init(&dram_timing_b0);
}
int spl_board_boot_device(enum boot_device boot_dev_spl)
{
log_debug("%s : starting\n", __func__);
switch (boot_dev_spl) {
case SD1_BOOT:
case MMC1_BOOT:
return BOOT_DEVICE_MMC1;
case USB_BOOT:
return BOOT_DEVICE_BOARD;
default:
return BOOT_DEVICE_NONE;
}
}
#define ECSPI_PAD_CTRL (PAD_CTL_DSE2 | PAD_CTL_HYS)
static const iomux_v3_cfg_t ecspi_pads[] = {
IMX8MQ_PAD_ECSPI1_SCLK__ECSPI1_SCLK | MUX_PAD_CTRL(ECSPI_PAD_CTRL),
IMX8MQ_PAD_ECSPI1_SS0__GPIO5_IO9 | MUX_PAD_CTRL(ECSPI_PAD_CTRL),
IMX8MQ_PAD_ECSPI1_MOSI__ECSPI1_MOSI | MUX_PAD_CTRL(ECSPI_PAD_CTRL),
IMX8MQ_PAD_ECSPI1_MISO__ECSPI1_MISO | MUX_PAD_CTRL(ECSPI_PAD_CTRL),
};
int board_ecspi_init(void)
{
imx_iomux_v3_setup_multiple_pads(ecspi_pads, ARRAY_SIZE(ecspi_pads));
return 0;
}
int board_spi_cs_gpio(unsigned int bus, unsigned int cs)
{
return (bus == 0 && cs == 0) ? (SPI1_SS0) : -1;
}
#define I2C_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_ODE | PAD_CTL_DSE7 | PAD_CTL_FSEL3)
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
struct i2c_pads_info i2c_pad_info1 = {
.scl = {
.i2c_mode = IMX8MQ_PAD_I2C1_SCL__I2C1_SCL | PC,
.gpio_mode = IMX8MQ_PAD_I2C1_SCL__GPIO5_IO14 | PC,
.gp = IMX_GPIO_NR(5, 14),
},
.sda = {
.i2c_mode = IMX8MQ_PAD_I2C1_SDA__I2C1_SDA | PC,
.gpio_mode = IMX8MQ_PAD_I2C1_SDA__GPIO5_IO15 | PC,
.gp = IMX_GPIO_NR(5, 15),
},
};
struct i2c_pads_info i2c_pad_info2 = {
.scl = {
.i2c_mode = IMX8MQ_PAD_I2C2_SCL__I2C2_SCL | PC,
.gpio_mode = IMX8MQ_PAD_I2C2_SCL__GPIO5_IO16 | PC,
.gp = IMX_GPIO_NR(5, 16),
},
.sda = {
.i2c_mode = IMX8MQ_PAD_I2C2_SDA__I2C2_SDA | PC,
.gpio_mode = IMX8MQ_PAD_I2C2_SDA__GPIO5_IO17 | PC,
.gp = IMX_GPIO_NR(5, 17),
},
};
struct i2c_pads_info i2c_pad_info3 = {
.scl = {
.i2c_mode = IMX8MQ_PAD_I2C3_SCL__I2C3_SCL | PC,
.gpio_mode = IMX8MQ_PAD_I2C3_SCL__GPIO5_IO18 | PC,
.gp = IMX_GPIO_NR(5, 18),
},
.sda = {
.i2c_mode = IMX8MQ_PAD_I2C3_SDA__I2C3_SDA | PC,
.gpio_mode = IMX8MQ_PAD_I2C3_SDA__GPIO5_IO19 | PC,
.gp = IMX_GPIO_NR(5, 19),
},
};
struct i2c_pads_info i2c_pad_info4 = {
.scl = {
.i2c_mode = IMX8MQ_PAD_I2C4_SCL__I2C4_SCL | PC,
.gpio_mode = IMX8MQ_PAD_I2C4_SCL__GPIO5_IO20 | PC,
.gp = IMX_GPIO_NR(5, 20),
},
.sda = {
.i2c_mode = IMX8MQ_PAD_I2C4_SDA__I2C4_SDA | PC,
.gpio_mode = IMX8MQ_PAD_I2C4_SDA__GPIO5_IO21 | PC,
.gp = IMX_GPIO_NR(5, 21),
},
};
#define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1)
static const iomux_v3_cfg_t uart_pads[] = {
IMX8MQ_PAD_UART1_RXD__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_UART1_TXD__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_UART2_RXD__UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_UART2_TXD__UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_UART3_RXD__UART3_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_UART3_TXD__UART3_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_ECSPI2_SCLK__UART4_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MQ_PAD_ECSPI2_MOSI__UART4_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
#define USDHC1_PWR_GPIO IMX_GPIO_NR(2, 10)
#define USDHC2_PWR_GPIO IMX_GPIO_NR(2, 19)
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 USDHC1_BASE_ADDR:
ret = 1;
break;
case USDHC2_BASE_ADDR:
ret = 1;
break;
}
return ret;
}
#define USDHC_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | \
PAD_CTL_FSEL1)
#define USDHC_GPIO_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_DSE1)
static const iomux_v3_cfg_t usdhc1_pads[] = {
IMX8MQ_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA4__USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA5__USDHC1_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA6__USDHC1_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_DATA7__USDHC1_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
IMX8MQ_PAD_SD1_RESET_B__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static const iomux_v3_cfg_t usdhc2_pads[] = {
IMX8MQ_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
IMX8MQ_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
IMX8MQ_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
IMX8MQ_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
IMX8MQ_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0x16 */
IMX8MQ_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */
IMX8MQ_PAD_SD2_RESET_B__GPIO2_IO19 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL),
};
static struct fsl_esdhc_cfg usdhc_cfg[2] = {
{USDHC1_BASE_ADDR, 0, 8},
{USDHC2_BASE_ADDR, 0, 4},
};
int board_mmc_init(struct bd_info *bis)
{
int i, ret;
/*
* According to the board_mmc_init() the following map is done:
* (U-Boot device node) (Physical Port)
* mmc0 USDHC1
* mmc1 USDHC2
*/
for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
log_debug("Initializing FSL USDHC port %d\n", i);
switch (i) {
case 0:
init_clk_usdhc(0);
usdhc_cfg[0].sdhc_clk = mxc_get_clock(USDHC1_CLK_ROOT);
imx_iomux_v3_setup_multiple_pads(usdhc1_pads,
ARRAY_SIZE(usdhc1_pads));
gpio_request(USDHC1_PWR_GPIO, "usdhc1_reset");
gpio_direction_output(USDHC1_PWR_GPIO, 0);
udelay(500);
gpio_direction_output(USDHC1_PWR_GPIO, 1);
break;
case 1:
init_clk_usdhc(1);
usdhc_cfg[1].sdhc_clk = mxc_get_clock(USDHC2_CLK_ROOT);
imx_iomux_v3_setup_multiple_pads(usdhc2_pads,
ARRAY_SIZE(usdhc2_pads));
gpio_request(USDHC2_PWR_GPIO, "usdhc2_reset");
gpio_direction_output(USDHC2_PWR_GPIO, 0);
udelay(500);
gpio_direction_output(USDHC2_PWR_GPIO, 1);
break;
default:
log_err("Warning: USDHC controller(%d) not supported\n", i + 1);
return -EINVAL;
}
ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
if (ret)
return ret;
}
return 0;
}
#define LDO_VOLT_EN BIT(6)
/*
* Disable the charger - it will be re-enabled in u-boot
*/
void disable_charger_bq25895(void)
{
u8 val;
int timeout = 1000; // ms
/* Set the i2c bus */
i2c_set_bus_num(3);
/* disable ship mode if BATFET_DLY is set */
val = i2c_reg_read(0x6a, 0x09);
log_debug("REG09 0x%x\n", val);
if (val & 0x28) {
val = val & ~0x28;
i2c_reg_write(0x6a, 0x09, val);
}
/* disable and trigger DPDM, ICO, HVDCP and MaxCharge */
val = i2c_reg_read(0x6a, 0x02);
log_debug("REG02 0x%x\n", val);
val &= 0xe0;
i2c_reg_write(0x6a, 0x02, val);
/* disable charger and enable BAT_LOADEN */
val = i2c_reg_read(0x6a, 0x03);
log_debug("REG03 0x%x\n", val);
val = (val | 0x80) & ~0x10;
i2c_reg_write(0x6a, 0x03, val);
mdelay(10);
/* force ADC conversions */
val = i2c_reg_read(0x6a, 0x02);
log_debug("REG02 0x%x\n", val);
val = (val | 0x80) & ~0x40;
i2c_reg_write(0x6a, 0x02, val);
do {
mdelay(10);
timeout -= 10;
} while ((i2c_reg_read(0x6a, 0x02) & 0x80) && (timeout > 0));
/* enable STAT pin */
val = i2c_reg_read(0x6a, 0x07);
log_debug("REG07 0x%x\n", val);
val = val & ~0x40;
i2c_reg_write(0x6a, 0x07, val);
/* check VBUS */
val = i2c_reg_read(0x6a, 0x11);
log_debug("VBUS good %d\n", (val >> 7) & 1);
log_debug("VBUS mV %d\n", (val & 0x7f) * 100 + 2600);
/* check VBAT */
val = i2c_reg_read(0x6a, 0x0e);
log_debug("VBAT mV %d\n", (val & 0x7f) * 20 + 2304);
/* limit the VINDPM to 3.9V */
i2c_reg_write(0x6a, 0x0d, 0x8d);
/* set the max voltage to 4.192V */
val = i2c_reg_read(0x6a, 0x6);
val = (val & ~0xFC) | 0x16 << 2;
i2c_reg_write(0x6a, 0x6, val);
/* set the SYS_MIN to 3.7V */
val = i2c_reg_read(0x6a, 0x3);
val = val | 0xE;
i2c_reg_write(0x6a, 0x3, val);
/* disable BAT_LOADEN */
val = i2c_reg_read(0x6a, 0x03);
log_debug("REG03 0x%x\n", val);
val = val & ~0x80;
i2c_reg_write(0x6a, 0x03, val);
}
#define I2C_PMIC 0
int power_bd71837_init(unsigned char bus)
{
static const char name[] = BD718XX_REGULATOR_DRIVER;
struct pmic *p = pmic_alloc();
if (!p) {
log_err("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
p->name = name;
p->interface = I2C_PMIC;
p->number_of_regs = BD718XX_MAX_REGISTER;
p->hw.i2c.addr = CONFIG_POWER_BD71837_I2C_ADDR;
p->hw.i2c.tx_num = 1;
p->bus = bus;
return 0;
}
int power_init_board(void)
{
struct pmic *p;
int ldo[] = {BD718XX_LDO5_VOLT, BD718XX_LDO6_VOLT,
BD71837_LDO7_VOLT};
u32 val;
int i, rv;
/* Set the i2c bus */
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
/*
* Init PMIC
*/
rv = power_bd71837_init(CONFIG_POWER_BD71837_I2C_BUS);
if (rv) {
log_err("%s: power_bd71837_init(%d) error %d\n", __func__,
CONFIG_POWER_BD71837_I2C_BUS, rv);
goto out;
}
p = pmic_get(BD718XX_REGULATOR_DRIVER);
if (!p) {
log_err("%s: pmic_get(%s) failed\n", __func__, BD718XX_REGULATOR_DRIVER);
rv = -ENODEV;
goto out;
}
rv = pmic_probe(p);
if (rv) {
log_err("%s: pmic_probe() error %d\n", __func__, rv);
goto out;
}
/*
* Unlock all regs
*/
pmic_reg_write(p, BD718XX_REGLOCK, 0);
/* find the reset cause */
pmic_reg_read(p, 0x29, &val);
log_debug("%s: reset cause %d\n", __func__, val);
/*
* Reconfigure default voltages and disable:
* - BUCK3: VDD_GPU_0V9 (1.00 -> 0.90)
* - BUCK4: VDD_VPU_0V9 (1.00 -> 0.90)
*/
pmic_reg_write(p, BD71837_BUCK3_VOLT_RUN, 0x14);
pmic_reg_write(p, BD71837_BUCK4_VOLT_RUN, 0x14);
/*
* Enable PHYs voltages: LDO5-7
*/
for (i = 0; i < ARRAY_SIZE(ldo); i++) {
rv = pmic_reg_read(p, ldo[i], &val);
if (rv) {
log_err("%s: pmic_read(%x) error %d\n", __func__,
ldo[i], rv);
continue;
}
pmic_reg_write(p, ldo[i], val | LDO_VOLT_EN);
}
udelay(500);
rv = 0;
out:
return rv;
}
int usb_gadget_handle_interrupts(void)
{
dwc3_uboot_handle_interrupt(0);
return 0;
}
static void dwc3_nxp_usb_phy_init(struct dwc3_device *dwc3)
{
u32 RegData;
RegData = readl(dwc3->base + USB_PHY_CTRL1);
RegData &= ~(USB_PHY_CTRL1_VDATSRCENB0 | USB_PHY_CTRL1_VDATDETENB0 |
USB_PHY_CTRL1_COMMONONN);
RegData |= USB_PHY_CTRL1_RESET | USB_PHY_CTRL1_ATERESET;
writel(RegData, dwc3->base + USB_PHY_CTRL1);
RegData = readl(dwc3->base + USB_PHY_CTRL0);
RegData |= USB_PHY_CTRL0_REF_SSP_EN;
RegData &= ~USB_PHY_CTRL0_SSC_RANGE_MASK;
RegData |= USB_PHY_CTRL0_SSC_RANGE_4003PPM;
writel(RegData, dwc3->base + USB_PHY_CTRL0);
RegData = readl(dwc3->base + USB_PHY_CTRL2);
RegData |= USB_PHY_CTRL2_TXENABLEN0;
writel(RegData, dwc3->base + USB_PHY_CTRL2);
RegData = readl(dwc3->base + USB_PHY_CTRL1);
RegData &= ~(USB_PHY_CTRL1_RESET | USB_PHY_CTRL1_ATERESET);
writel(RegData, dwc3->base + USB_PHY_CTRL1);
/* Disable rx term override */
RegData = readl(dwc3->base + USB_PHY_CTRL6);
RegData &= ~USB_PHY_CTRL6_RXTERM_OVERRIDE_SEL;
writel(RegData, dwc3->base + USB_PHY_CTRL6);
}
static struct dwc3_device dwc3_device0_data = {
.maximum_speed = USB_SPEED_HIGH,
.base = USB1_BASE_ADDR,
.dr_mode = USB_DR_MODE_PERIPHERAL,
.index = 0,
};
static struct dwc3_device dwc3_device1_data = {
.maximum_speed = USB_SPEED_HIGH,
.base = USB2_BASE_ADDR,
.dr_mode = USB_DR_MODE_HOST,
.index = 1,
};
int board_usb_init(int index, enum usb_init_type init)
{
int ret = 0;
printf("%s : index %d type %d\n", __func__, index, init);
if (index == 0 && init == USB_INIT_DEVICE) {
dwc3_nxp_usb_phy_init(&dwc3_device0_data);
ret = dwc3_uboot_init(&dwc3_device0_data);
}
if (index == 1 && init == USB_INIT_HOST) {
dwc3_nxp_usb_phy_init(&dwc3_device1_data);
ret = dwc3_uboot_init(&dwc3_device1_data);
}
return ret;
}
int board_usb_cleanup(int index, enum usb_init_type init)
{
u32 RegData;
struct dwc3_device *dwc3;
printf("%s : %d\n", __func__, index);
if (index == 0 && init == USB_INIT_DEVICE)
dwc3 = &dwc3_device0_data;
if (index == 1 && init == USB_INIT_HOST)
dwc3 = &dwc3_device1_data;
dwc3_uboot_exit(index);
/* reset the phy */
RegData = readl(dwc3->base + USB_PHY_CTRL1);
RegData &= ~(USB_PHY_CTRL1_VDATSRCENB0 | USB_PHY_CTRL1_VDATDETENB0 |
USB_PHY_CTRL1_COMMONONN);
RegData |= USB_PHY_CTRL1_RESET | USB_PHY_CTRL1_ATERESET;
writel(RegData, dwc3->base + USB_PHY_CTRL1);
/* enable rx term override */
RegData = readl(dwc3->base + USB_PHY_CTRL6);
RegData |= USB_PHY_CTRL6_RXTERM_OVERRIDE_SEL;
writel(RegData, dwc3->base + USB_PHY_CTRL6);
return 0;
}
void spl_board_init(void)
{
if (is_usb_boot())
puts("USB Boot\n");
else
puts("Normal Boot\n");
}
void board_boot_order(u32 *spl_boot_list)
{
if (is_usb_boot())
spl_boot_list[0] = BOOT_DEVICE_BOARD;
else
spl_boot_list[0] = BOOT_DEVICE_MMC1;
}
#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
static const iomux_v3_cfg_t wdog_pads[] = {
IMX8MQ_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
};
void board_init_f(ulong dummy)
{
int ret;
struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
arch_cpu_init();
imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
set_wdog_reset(wdog);
init_uart_clk(CONSOLE_UART_CLK);
imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
#ifdef CONSOLE_ON_UART4
gpio_request(WIFI_EN, "WIFI_EN");
gpio_direction_output(WIFI_EN, 1);
#endif
board_early_init_f();
timer_init();
preloader_console_init();
ret = spl_init();
if (ret) {
log_err("spl_init() failed: %d\n", ret);
hang();
}
enable_tzc380();
printf("Initializing pinmux\n");
init_pinmux();
gpio_direction_output(LED_G, 1);
gpio_direction_output(MOTO, 1);
mdelay(50);
gpio_direction_output(MOTO, 0);
/* Enable and configure i2c buses not used below */
setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info3);
setup_i2c(3, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info4);
power_init_board();
disable_charger_bq25895();
/* initialize this for M4 even if u-boot doesn't have SF_CMD */
printf("Initializing ECSPI\n");
board_ecspi_init();
/* DDR initialization */
printf("Initializing DRAM\n");
spl_dram_init();
}