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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2016-2018 Toradex, Inc.
*/
#include <common.h>
#include <dm.h>
#include <asm/arch-tegra/ap.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pinmux.h>
#include <pci_tegra.h>
#include <power/as3722.h>
#include <power/pmic.h>
#include "../common/tdx-common.h"
#include "pinmux-config-apalis-tk1.h"
#define LAN_DEV_OFF_N TEGRA_GPIO(O, 6)
#define LAN_RESET_N TEGRA_GPIO(S, 2)
#define LAN_WAKE_N TEGRA_GPIO(O, 5)
#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
#define PEX_PERST_N TEGRA_GPIO(DD, 1) /* Apalis GPIO7 */
#define RESET_MOCI_CTRL TEGRA_GPIO(U, 4)
#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
int arch_misc_init(void)
{
if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
NVBOOTTYPE_RECOVERY)
printf("USB recovery mode\n");
return 0;
}
int checkboard(void)
{
puts("Model: Toradex Apalis TK1 2GB\n");
return 0;
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, bd_t *bd)
{
return ft_common_board_setup(blob, bd);
}
#endif
/*
* Routine: pinmux_init
* Description: Do individual peripheral pinmux configs
*/
void pinmux_init(void)
{
pinmux_clear_tristate_input_clamping();
gpio_config_table(apalis_tk1_gpio_inits,
ARRAY_SIZE(apalis_tk1_gpio_inits));
pinmux_config_pingrp_table(apalis_tk1_pingrps,
ARRAY_SIZE(apalis_tk1_pingrps));
pinmux_config_drvgrp_table(apalis_tk1_drvgrps,
ARRAY_SIZE(apalis_tk1_drvgrps));
}
#ifdef CONFIG_PCI_TEGRA
/* TODO: Convert to driver model */
static int as3722_sd_enable(struct udevice *pmic, unsigned int sd)
{
int err;
if (sd > 6)
return -EINVAL;
err = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd);
if (err) {
pr_err("failed to update SD control register: %d", err);
return err;
}
return 0;
}
/* TODO: Convert to driver model */
static int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo)
{
int err;
u8 ctrl_reg = AS3722_LDO_CONTROL0;
if (ldo > 11)
return -EINVAL;
if (ldo > 7) {
ctrl_reg = AS3722_LDO_CONTROL1;
ldo -= 8;
}
err = pmic_clrsetbits(pmic, ctrl_reg, 0, 1 << ldo);
if (err) {
pr_err("failed to update LDO control register: %d", err);
return err;
}
return 0;
}
int tegra_pcie_board_init(void)
{
struct udevice *dev;
int ret;
ret = uclass_get_device_by_driver(UCLASS_PMIC,
DM_GET_DRIVER(pmic_as3722), &dev);
if (ret) {
pr_err("failed to find AS3722 PMIC: %d\n", ret);
return ret;
}
ret = as3722_sd_enable(dev, 4);
if (ret < 0) {
pr_err("failed to enable SD4: %d\n", ret);
return ret;
}
ret = as3722_sd_set_voltage(dev, 4, 0x24);
if (ret < 0) {
pr_err("failed to set SD4 voltage: %d\n", ret);
return ret;
}
gpio_request(LAN_DEV_OFF_N, "LAN_DEV_OFF_N");
gpio_request(LAN_RESET_N, "LAN_RESET_N");
gpio_request(LAN_WAKE_N, "LAN_WAKE_N");
#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
gpio_request(PEX_PERST_N, "PEX_PERST_N");
gpio_request(RESET_MOCI_CTRL, "RESET_MOCI_CTRL");
#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
return 0;
}
void tegra_pcie_board_port_reset(struct tegra_pcie_port *port)
{
int index = tegra_pcie_port_index_of_port(port);
if (index == 1) { /* I210 Gigabit Ethernet Controller (On-module) */
struct udevice *dev;
int ret;
ret = uclass_get_device_by_driver(UCLASS_PMIC,
DM_GET_DRIVER(pmic_as3722),
&dev);
if (ret) {
debug("%s: Failed to find PMIC\n", __func__);
return;
}
/* Reset I210 Gigabit Ethernet Controller */
gpio_direction_output(LAN_RESET_N, 0);
/*
* Make sure we don't get any back feeding from DEV_OFF_N resp.
* LAN_WAKE_N
*/
gpio_direction_output(LAN_DEV_OFF_N, 0);
gpio_direction_output(LAN_WAKE_N, 0);
/* Make sure LDO9 and LDO10 are initially enabled @ 0V */
ret = as3722_ldo_enable(dev, 9);
if (ret < 0) {
pr_err("failed to enable LDO9: %d\n", ret);
return;
}
ret = as3722_ldo_enable(dev, 10);
if (ret < 0) {
pr_err("failed to enable LDO10: %d\n", ret);
return;
}
ret = as3722_ldo_set_voltage(dev, 9, 0x80);
if (ret < 0) {
pr_err("failed to set LDO9 voltage: %d\n", ret);
return;
}
ret = as3722_ldo_set_voltage(dev, 10, 0x80);
if (ret < 0) {
pr_err("failed to set LDO10 voltage: %d\n", ret);
return;
}
/* Make sure controller gets enabled by disabling DEV_OFF_N */
gpio_set_value(LAN_DEV_OFF_N, 1);
/*
* Enable LDO9 and LDO10 for +V3.3_ETH on patched prototype
* V1.0A and sample V1.0B and newer modules
*/
ret = as3722_ldo_set_voltage(dev, 9, 0xff);
if (ret < 0) {
pr_err("failed to set LDO9 voltage: %d\n", ret);
return;
}
ret = as3722_ldo_set_voltage(dev, 10, 0xff);
if (ret < 0) {
pr_err("failed to set LDO10 voltage: %d\n", ret);
return;
}
/*
* Must be asserted for 100 ms after power and clocks are stable
*/
mdelay(100);
gpio_set_value(LAN_RESET_N, 1);
} else if (index == 0) { /* Apalis PCIe */
#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
/*
* Reset PLX PEX 8605 PCIe Switch plus PCIe devices on Apalis
* Evaluation Board
*/
gpio_direction_output(PEX_PERST_N, 0);
gpio_direction_output(RESET_MOCI_CTRL, 0);
/*
* Must be asserted for 100 ms after power and clocks are stable
*/
mdelay(100);
gpio_set_value(PEX_PERST_N, 1);
/*
* Err_5: PEX_REFCLK_OUTpx/nx Clock Outputs is not Guaranteed
* Until 900 us After PEX_PERST# De-assertion
*/
mdelay(1);
gpio_set_value(RESET_MOCI_CTRL, 1);
#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
}
}
#endif /* CONFIG_PCI_TEGRA */
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