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u-boot/board/toradex/colibri_imx7/colibri_imx7.c
Harald Seiler 35b65dd8ef reset: Remove addr parameter from reset_cpu() 
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-03-02 14:03:02 -05:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016-2018 Toradex AG
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <net.h>
#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx7-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/io.h>
#include <common.h>
#include <dm.h>
#include <dm/platform_data/serial_mxc.h>
#include <fdt_support.h>
#include <fsl_esdhc_imx.h>
#include <jffs2/load_kernel.h>
#include <linux/delay.h>
#include <linux/sizes.h>
#include <mmc.h>
#include <miiphy.h>
#include <mtd_node.h>
#include <netdev.h>
#include <power/pmic.h>
#include <power/rn5t567_pmic.h>
#include <usb.h>
#include <usb/ehci-ci.h>
#include "../common/tdx-common.h"
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL (PAD_CTL_DSE_3P3V_49OHM | \
PAD_CTL_PUS_PU100KOHM | PAD_CTL_HYS)
#define ENET_PAD_CTRL (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
#define ENET_PAD_CTRL_MII (PAD_CTL_DSE_3P3V_32OHM)
#define ENET_RX_PAD_CTRL (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
#define LCD_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_PU100KOHM | \
PAD_CTL_DSE_3P3V_49OHM)
#define NAND_PAD_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
#define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_PUS_PU5KOHM)
#define USB_CDET_GPIO IMX_GPIO_NR(7, 14)
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, imx_ddr_size());
return 0;
}
static iomux_v3_cfg_t const uart1_pads[] = {
MX7D_PAD_UART1_RX_DATA__UART1_DTE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
MX7D_PAD_UART1_TX_DATA__UART1_DTE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
MX7D_PAD_SAI2_TX_BCLK__UART1_DTE_CTS | MUX_PAD_CTRL(UART_PAD_CTRL),
MX7D_PAD_SAI2_TX_SYNC__UART1_DTE_RTS | MUX_PAD_CTRL(UART_PAD_CTRL),
};
#ifdef CONFIG_USB_EHCI_MX7
static iomux_v3_cfg_t const usb_cdet_pads[] = {
MX7D_PAD_ENET1_CRS__GPIO7_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
#endif
#ifdef CONFIG_TARGET_COLIBRI_IMX7_NAND
static iomux_v3_cfg_t const gpmi_pads[] = {
MX7D_PAD_SD3_DATA0__NAND_DATA00 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA1__NAND_DATA01 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA2__NAND_DATA02 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA3__NAND_DATA03 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA4__NAND_DATA04 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA5__NAND_DATA05 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA6__NAND_DATA06 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_DATA7__NAND_DATA07 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_CLK__NAND_CLE | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_CMD__NAND_ALE | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_STROBE__NAND_RE_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SD3_RESET_B__NAND_WE_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SAI1_RX_DATA__NAND_CE1_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SAI1_TX_BCLK__NAND_CE0_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX7D_PAD_SAI1_TX_DATA__NAND_READY_B | MUX_PAD_CTRL(NAND_PAD_READY0_CTRL),
};
static void setup_gpmi_nand(void)
{
imx_iomux_v3_setup_multiple_pads(gpmi_pads, ARRAY_SIZE(gpmi_pads));
/* NAND_USDHC_BUS_CLK is set in rom */
set_clk_nand();
}
#endif
#ifdef CONFIG_DM_VIDEO
static iomux_v3_cfg_t const backlight_pads[] = {
/* Backlight On */
MX7D_PAD_SD1_WP__GPIO5_IO1 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* Backlight PWM<A> (multiplexed pin) */
MX7D_PAD_GPIO1_IO08__GPIO1_IO8 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX7D_PAD_ECSPI2_MOSI__GPIO4_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
#define GPIO_BL_ON IMX_GPIO_NR(5, 1)
#define GPIO_PWM_A IMX_GPIO_NR(1, 8)
static int setup_lcd(void)
{
imx_iomux_v3_setup_multiple_pads(backlight_pads, ARRAY_SIZE(backlight_pads));
/* Set BL_ON */
gpio_request(GPIO_BL_ON, "BL_ON");
gpio_direction_output(GPIO_BL_ON, 1);
/* Set PWM<A> to full brightness (assuming inversed polarity) */
gpio_request(GPIO_PWM_A, "PWM<A>");
gpio_direction_output(GPIO_PWM_A, 0);
return 0;
}
#endif
/*
* Backlight off before OS handover
*/
void board_preboot_os(void)
{
#ifdef CONFIG_DM_VIDEO
gpio_direction_output(GPIO_PWM_A, 1);
gpio_direction_output(GPIO_BL_ON, 0);
#endif
}
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
#ifdef CONFIG_FEC_MXC
static int setup_fec(void)
{
struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs
= (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
#ifndef CONFIG_COLIBRI_IMX7_EXT_PHYCLK
/*
* Use 50M anatop REF_CLK1 for ENET1, clear gpr1[13], set gpr1[17]
* and output it on the pin
*/
clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK,
IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK);
#else
/* Use 50M external CLK for ENET1, set gpr1[13], clear gpr1[17] */
clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK,
IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK);
#endif
return set_clk_enet(ENET_50MHZ);
}
#endif
int board_early_init_f(void)
{
setup_iomux_uart();
return 0;
}
int board_init(void)
{
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
#ifdef CONFIG_FEC_MXC
setup_fec();
#endif
#ifdef CONFIG_TARGET_COLIBRI_IMX7_NAND
setup_gpmi_nand();
#endif
#ifdef CONFIG_USB_EHCI_MX7
imx_iomux_v3_setup_multiple_pads(usb_cdet_pads, ARRAY_SIZE(usb_cdet_pads));
gpio_request(USB_CDET_GPIO, "usb-cdet-gpio");
#endif
return 0;
}
#ifdef CONFIG_DM_PMIC
int power_init_board(void)
{
struct udevice *dev;
int reg, ver;
int ret;
ret = pmic_get("rn5t567@33", &dev);
if (ret)
return ret;
ver = pmic_reg_read(dev, RN5T567_LSIVER);
reg = pmic_reg_read(dev, RN5T567_OTPVER);
printf("PMIC: RN5T567 LSIVER=0x%02x OTPVER=0x%02x\n", ver, reg);
/* set judge and press timer of N_OE to minimal values */
pmic_clrsetbits(dev, RN5T567_NOETIMSETCNT, 0x7, 0);
/* configure sleep slot for 3.3V Ethernet */
reg = pmic_reg_read(dev, RN5T567_LDO1_SLOT);
reg = (reg & 0xf0) | reg >> 4;
pmic_reg_write(dev, RN5T567_LDO1_SLOT, reg);
/* disable DCDC2 discharge to avoid backfeeding through VFB2 */
pmic_clrsetbits(dev, RN5T567_DC2CTL, 0x2, 0);
/* configure sleep slot for ARM rail */
reg = pmic_reg_read(dev, RN5T567_DC2_SLOT);
reg = (reg & 0xf0) | reg >> 4;
pmic_reg_write(dev, RN5T567_DC2_SLOT, reg);
/* disable LDO2 discharge to avoid backfeeding from +V3.3_SD */
pmic_clrsetbits(dev, RN5T567_LDODIS1, 0x2, 0);
return 0;
}
void reset_cpu(void)
{
struct udevice *dev;
pmic_get("rn5t567@33", &dev);
/* Use PMIC to reset, set REPWRTIM to 0 and REPWRON to 1 */
pmic_reg_write(dev, RN5T567_REPCNT, 0x1);
pmic_reg_write(dev, RN5T567_SLPCNT, 0x1);
/*
* Re-power factor detection on PMIC side is not instant. 1ms
* proved to be enough time until reset takes effect.
*/
mdelay(1);
}
#endif
int checkboard(void)
{
printf("Model: Toradex Colibri iMX7%c\n",
is_cpu_type(MXC_CPU_MX7D) ? 'D' : 'S');
return 0;
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
#if defined(CONFIG_IMX_BOOTAUX) && defined(CONFIG_ARCH_FIXUP_FDT_MEMORY)
int up;
up = arch_auxiliary_core_check_up(0);
if (up) {
int ret;
int areas = 1;
u64 start[2], size[2];
/*
* Reserve 1MB of memory for M4 (1MiB is also the minimum
* alignment for Linux due to MMU section size restrictions).
*/
start[0] = gd->bd->bi_dram[0].start;
size[0] = SZ_256M - SZ_1M;
/* If needed, create a second entry for memory beyond 256M */
if (gd->bd->bi_dram[0].size > SZ_256M) {
start[1] = gd->bd->bi_dram[0].start + SZ_256M;
size[1] = gd->bd->bi_dram[0].size - SZ_256M;
areas = 2;
}
ret = fdt_set_usable_memory(blob, start, size, areas);
if (ret) {
eprintf("Cannot set usable memory\n");
return ret;
}
} else {
int off;
off = fdt_node_offset_by_compatible(blob, -1,
"fsl,imx7d-rpmsg");
if (off > 0)
fdt_status_disabled(blob, off);
}
#endif
#if defined(CONFIG_FDT_FIXUP_PARTITIONS)
static const struct node_info nodes[] = {
{ "fsl,imx7d-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
{ "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, },
};
/* Update partition nodes using info from mtdparts env var */
puts(" Updating MTD partitions...\n");
fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
#endif
return ft_common_board_setup(blob, bd);
}
#endif
#ifdef CONFIG_USB_EHCI_MX7
static iomux_v3_cfg_t const usb_otg2_pads[] = {
MX7D_PAD_UART3_CTS_B__USB_OTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
};
int board_ehci_hcd_init(int port)
{
switch (port) {
case 0:
break;
case 1:
if (is_cpu_type(MXC_CPU_MX7S))
return -ENODEV;
imx_iomux_v3_setup_multiple_pads(usb_otg2_pads,
ARRAY_SIZE(usb_otg2_pads));
break;
default:
return -EINVAL;
}
return 0;
}
int board_usb_phy_mode(int port)
{
switch (port) {
case 0:
if (gpio_get_value(USB_CDET_GPIO))
return USB_INIT_DEVICE;
else
return USB_INIT_HOST;
case 1:
default:
return USB_INIT_HOST;
}
}
int board_late_init(void)
{
#if defined(CONFIG_DM_VIDEO)
setup_lcd();
#endif
return 0;
}
#endif
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