mirror of
https://github.com/AsahiLinux/u-boot
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4c63a601b9
Support the V1.2 hardware revision with the following pin muxing changes: Ddc_scl_pv4 and ddc_sda_pv5 previously used as Apalis GPIO3 and GPIO4 are now used as DDC pins. Gen2_i2c_scl_pt5 and gen2_i2c_sda_pt6 previously used as DDC pins are now used as USB power enable signals. Usb_vbus_en0_pn4 and usb_vbus_en1_pn5 previously used as USB power enable signals are now used as GPIO3 and GPIO4. Additionally a new device tree file tegra124-apalis-v1.2-eval.dtb is loaded on V1.2 and later modules and resp. USB power enable signals activated. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
298 lines
7 KiB
C
298 lines
7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2016-2018 Toradex, Inc.
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*/
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#include <common.h>
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#include <dm.h>
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#include <asm/arch-tegra/ap.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/pinmux.h>
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#include <environment.h>
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#include <pci_tegra.h>
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#include <power/as3722.h>
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#include <power/pmic.h>
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#include "../common/tdx-common.h"
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#include "pinmux-config-apalis-tk1.h"
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#define LAN_DEV_OFF_N TEGRA_GPIO(O, 6)
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#define LAN_RESET_N TEGRA_GPIO(S, 2)
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#define FAN_EN TEGRA_GPIO(DD, 2)
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#define LAN_WAKE_N TEGRA_GPIO(O, 5)
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#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
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#define PEX_PERST_N TEGRA_GPIO(DD, 1) /* Apalis GPIO7 */
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#define RESET_MOCI_CTRL TEGRA_GPIO(U, 4)
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#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
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#define VCC_USBH TEGRA_GPIO(T, 6)
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#define VCC_USBH_V1_0 TEGRA_GPIO(N, 5)
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#define VCC_USBO1 TEGRA_GPIO(T, 5)
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#define VCC_USBO1_V1_0 TEGRA_GPIO(N, 4)
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int arch_misc_init(void)
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{
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if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
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NVBOOTTYPE_RECOVERY)
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printf("USB recovery mode\n");
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/* PCB Version Indication: V1.2 and later have GPIO_PV0 wired to GND */
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gpio_request(TEGRA_GPIO(V, 0), "PCB Version Indication");
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gpio_direction_input(TEGRA_GPIO(V, 0));
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if (gpio_get_value(TEGRA_GPIO(V, 0))) {
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/*
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* if using the default device tree for new V1.2 and later HW,
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* use version for older V1.0 and V1.1 HW
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*/
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char *fdt_env = env_get("fdt_module");
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if (fdt_env && !strcmp(FDT_MODULE, fdt_env)) {
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env_set("fdt_module", FDT_MODULE_V1_0);
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printf("patching fdt_module to " FDT_MODULE_V1_0
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" for older V1.0 and V1.1 HW\n");
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#ifndef CONFIG_ENV_IS_NOWHERE
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env_save();
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#endif
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}
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/* activate USB power enable GPIOs */
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gpio_request(VCC_USBH_V1_0, "VCC_USBH");
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gpio_direction_output(VCC_USBH_V1_0, 1);
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gpio_request(VCC_USBO1_V1_0, "VCC_USBO1");
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gpio_direction_output(VCC_USBO1_V1_0, 1);
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} else {
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/* activate USB power enable GPIOs */
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gpio_request(VCC_USBH, "VCC_USBH");
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gpio_direction_output(VCC_USBH, 1);
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gpio_request(VCC_USBO1, "VCC_USBO1");
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gpio_direction_output(VCC_USBO1, 1);
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}
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return 0;
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}
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int checkboard(void)
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{
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puts("Model: Toradex Apalis TK1 2GB\n");
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return 0;
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}
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#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
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int ft_board_setup(void *blob, bd_t *bd)
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{
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return ft_common_board_setup(blob, bd);
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}
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#endif
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/*
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* Routine: pinmux_init
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* Description: Do individual peripheral pinmux configs
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*/
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void pinmux_init(void)
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{
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pinmux_clear_tristate_input_clamping();
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gpio_config_table(apalis_tk1_gpio_inits,
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ARRAY_SIZE(apalis_tk1_gpio_inits));
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pinmux_config_pingrp_table(apalis_tk1_pingrps,
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ARRAY_SIZE(apalis_tk1_pingrps));
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pinmux_config_drvgrp_table(apalis_tk1_drvgrps,
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ARRAY_SIZE(apalis_tk1_drvgrps));
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}
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#ifdef CONFIG_PCI_TEGRA
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/* TODO: Convert to driver model */
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static int as3722_sd_enable(struct udevice *pmic, unsigned int sd)
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{
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int err;
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if (sd > 6)
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return -EINVAL;
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err = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd);
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if (err) {
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pr_err("failed to update SD control register: %d", err);
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return err;
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}
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return 0;
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}
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/* TODO: Convert to driver model */
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static int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo)
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{
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int err;
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u8 ctrl_reg = AS3722_LDO_CONTROL0;
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if (ldo > 11)
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return -EINVAL;
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if (ldo > 7) {
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ctrl_reg = AS3722_LDO_CONTROL1;
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ldo -= 8;
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}
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err = pmic_clrsetbits(pmic, ctrl_reg, 0, 1 << ldo);
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if (err) {
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pr_err("failed to update LDO control register: %d", err);
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return err;
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}
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return 0;
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}
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int tegra_pcie_board_init(void)
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{
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_PMIC,
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DM_GET_DRIVER(pmic_as3722), &dev);
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if (ret) {
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pr_err("failed to find AS3722 PMIC: %d\n", ret);
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return ret;
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}
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ret = as3722_sd_enable(dev, 4);
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if (ret < 0) {
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pr_err("failed to enable SD4: %d\n", ret);
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return ret;
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}
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ret = as3722_sd_set_voltage(dev, 4, 0x24);
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if (ret < 0) {
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pr_err("failed to set SD4 voltage: %d\n", ret);
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return ret;
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}
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gpio_request(LAN_DEV_OFF_N, "LAN_DEV_OFF_N");
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gpio_request(LAN_RESET_N, "LAN_RESET_N");
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gpio_request(LAN_WAKE_N, "LAN_WAKE_N");
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#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
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gpio_request(PEX_PERST_N, "PEX_PERST_N");
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gpio_request(RESET_MOCI_CTRL, "RESET_MOCI_CTRL");
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#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
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return 0;
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}
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void tegra_pcie_board_port_reset(struct tegra_pcie_port *port)
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{
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int index = tegra_pcie_port_index_of_port(port);
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if (index == 1) { /* I210 Gigabit Ethernet Controller (On-module) */
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_PMIC,
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DM_GET_DRIVER(pmic_as3722),
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&dev);
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if (ret) {
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debug("%s: Failed to find PMIC\n", __func__);
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return;
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}
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/* Reset I210 Gigabit Ethernet Controller */
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gpio_direction_output(LAN_RESET_N, 0);
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/*
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* Make sure we don't get any back feeding from DEV_OFF_N resp.
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* LAN_WAKE_N
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*/
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gpio_direction_output(LAN_DEV_OFF_N, 0);
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gpio_direction_output(LAN_WAKE_N, 0);
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/* Make sure LDO9 and LDO10 are initially enabled @ 0V */
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ret = as3722_ldo_enable(dev, 9);
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if (ret < 0) {
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pr_err("failed to enable LDO9: %d\n", ret);
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return;
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}
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ret = as3722_ldo_enable(dev, 10);
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if (ret < 0) {
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pr_err("failed to enable LDO10: %d\n", ret);
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return;
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}
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ret = as3722_ldo_set_voltage(dev, 9, 0x80);
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if (ret < 0) {
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pr_err("failed to set LDO9 voltage: %d\n", ret);
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return;
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}
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ret = as3722_ldo_set_voltage(dev, 10, 0x80);
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if (ret < 0) {
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pr_err("failed to set LDO10 voltage: %d\n", ret);
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return;
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}
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/* Make sure controller gets enabled by disabling DEV_OFF_N */
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gpio_set_value(LAN_DEV_OFF_N, 1);
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/*
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* Enable LDO9 and LDO10 for +V3.3_ETH on patched prototype
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* V1.0A and sample V1.0B and newer modules
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*/
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ret = as3722_ldo_set_voltage(dev, 9, 0xff);
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if (ret < 0) {
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pr_err("failed to set LDO9 voltage: %d\n", ret);
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return;
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}
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ret = as3722_ldo_set_voltage(dev, 10, 0xff);
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if (ret < 0) {
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pr_err("failed to set LDO10 voltage: %d\n", ret);
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return;
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}
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/*
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* Must be asserted for 100 ms after power and clocks are stable
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*/
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mdelay(100);
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gpio_set_value(LAN_RESET_N, 1);
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} else if (index == 0) { /* Apalis PCIe */
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#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
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/*
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* Reset PLX PEX 8605 PCIe Switch plus PCIe devices on Apalis
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* Evaluation Board
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*/
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gpio_direction_output(PEX_PERST_N, 0);
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gpio_direction_output(RESET_MOCI_CTRL, 0);
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/*
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* Must be asserted for 100 ms after power and clocks are stable
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*/
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mdelay(100);
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gpio_set_value(PEX_PERST_N, 1);
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/*
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* Err_5: PEX_REFCLK_OUTpx/nx Clock Outputs is not Guaranteed
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* Until 900 us After PEX_PERST# De-assertion
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*/
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mdelay(1);
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gpio_set_value(RESET_MOCI_CTRL, 1);
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#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
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}
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}
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#endif /* CONFIG_PCI_TEGRA */
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/*
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* Enable/start PWM CPU fan
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*/
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void start_cpu_fan(void)
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{
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gpio_request(FAN_EN, "FAN_EN");
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gpio_direction_output(FAN_EN, 1);
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}
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/*
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* Backlight off before OS handover
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*/
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void board_preboot_os(void)
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{
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gpio_request(TEGRA_GPIO(BB, 5), "BL_ON");
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gpio_direction_output(TEGRA_GPIO(BB, 5), 0);
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}
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