diff options
| -rw-r--r-- | board/toradex/apalis-tk1/Kconfig | 8 | ||||
| -rw-r--r-- | board/toradex/apalis-tk1/apalis-tk1.c | 252 |
2 files changed, 165 insertions, 95 deletions
diff --git a/board/toradex/apalis-tk1/Kconfig b/board/toradex/apalis-tk1/Kconfig index 05407ad2d5..159b8fb19a 100644 --- a/board/toradex/apalis-tk1/Kconfig +++ b/board/toradex/apalis-tk1/Kconfig @@ -25,6 +25,14 @@ config TDX_CFG_BLOCK_PART config TDX_CFG_BLOCK_OFFSET default "-512" +config APALIS_TK1_PCIE_EVALBOARD_INIT + bool "Apalis Evaluation Board PCIe Initialisation" + help + Bring up the Apalis PCIe port with the PCIe switch as found on the + Apalis Evaluation board. Note that by default the PCIe port is also + left disabled in the device tree which needs changing as well for this + to actually work. + source "board/toradex/common/Kconfig" endif diff --git a/board/toradex/apalis-tk1/apalis-tk1.c b/board/toradex/apalis-tk1/apalis-tk1.c index 6bb2acca16..d6a736d8aa 100644 --- a/board/toradex/apalis-tk1/apalis-tk1.c +++ b/board/toradex/apalis-tk1/apalis-tk1.c @@ -1,20 +1,29 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * Copyright (c) 2016 Toradex, Inc. + * 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_RESET_N TEGRA_GPIO(S, 2) +#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) { @@ -58,123 +67,176 @@ void pinmux_init(void) } #ifdef CONFIG_PCI_TEGRA -int tegra_pcie_board_init(void) +/* TODO: Convert to driver model */ +static int as3722_sd_enable(struct udevice *pmic, unsigned int sd) { - /* TODO: Convert to driver model - struct udevice *pmic; int err; - err = as3722_init(&pmic); + if (sd > 6) + return -EINVAL; + + err = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd); if (err) { - error("failed to initialize AS3722 PMIC: %d\n", err); + pr_err("failed to update SD control register: %d", err); return err; } - err = as3722_sd_enable(pmic, 4); - if (err < 0) { - error("failed to enable SD4: %d\n", err); - return err; - } + return 0; +} - err = as3722_sd_set_voltage(pmic, 4, 0x24); - if (err < 0) { - error("failed to set SD4 voltage: %d\n", err); - return err; - } +/* TODO: Convert to driver model */ +static int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo) +{ + int err; + u8 ctrl_reg = AS3722_LDO_CONTROL0; - err = as3722_gpio_configure(pmic, 1, AS3722_GPIO_OUTPUT_VDDH | - AS3722_GPIO_INVERT); - if (err < 0) { - error("failed to configure GPIO#1 as output: %d\n", err); - return err; - } + if (ldo > 11) + return -EINVAL; - err = as3722_gpio_direction_output(pmic, 2, 1); - if (err < 0) { - error("failed to set GPIO#2 high: %d\n", err); - return err; + if (ldo > 7) { + ctrl_reg = AS3722_LDO_CONTROL1; + ldo -= 8; } - */ - /* Reset I210 Gigabit Ethernet Controller */ - gpio_request(LAN_RESET_N, "LAN_RESET_N"); - gpio_direction_output(LAN_RESET_N, 0); - - /* - * Make sure we don't get any back feeding from LAN_WAKE_N resp. - * DEV_OFF_N - */ - gpio_request(TEGRA_GPIO(O, 5), "LAN_WAKE_N"); - gpio_direction_output(TEGRA_GPIO(O, 5), 0); - - gpio_request(TEGRA_GPIO(O, 6), "LAN_DEV_OFF_N"); - gpio_direction_output(TEGRA_GPIO(O, 6), 0); - - /* Make sure LDO9 and LDO10 are initially enabled @ 0V */ - /* TODO: Convert to driver model - err = as3722_ldo_enable(pmic, 9); - if (err < 0) { - error("failed to enable LDO9: %d\n", err); - return err; - } - err = as3722_ldo_enable(pmic, 10); - if (err < 0) { - error("failed to enable LDO10: %d\n", err); - return err; - } - err = as3722_ldo_set_voltage(pmic, 9, 0x80); - if (err < 0) { - error("failed to set LDO9 voltage: %d\n", err); - return err; - } - err = as3722_ldo_set_voltage(pmic, 10, 0x80); - if (err < 0) { - error("failed to set LDO10 voltage: %d\n", err); + err = pmic_clrsetbits(pmic, ctrl_reg, 0, 1 << ldo); + if (err) { + pr_err("failed to update LDO control register: %d", err); return err; } - */ - mdelay(100); - - /* Make sure controller gets enabled by disabling DEV_OFF_N */ - gpio_set_value(TEGRA_GPIO(O, 6), 1); + return 0; +} - /* Enable LDO9 and LDO10 for +V3.3_ETH on patched prototypes */ - /* TODO: Convert to driver model - err = as3722_ldo_set_voltage(pmic, 9, 0xff); - if (err < 0) { - error("failed to set LDO9 voltage: %d\n", err); - return err; +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; } - err = as3722_ldo_set_voltage(pmic, 10, 0xff); - if (err < 0) { - error("failed to set LDO10 voltage: %d\n", err); - return err; + + ret = as3722_sd_enable(dev, 4); + if (ret < 0) { + pr_err("failed to enable SD4: %d\n", ret); + return ret; } - */ - mdelay(100); - gpio_set_value(LAN_RESET_N, 1); + ret = as3722_sd_set_voltage(dev, 4, 0x24); + if (ret < 0) { + pr_err("failed to set SD4 voltage: %d\n", ret); + return ret; + } -#ifdef APALIS_TK1_PCIE_EVALBOARD_INIT -#define PEX_PERST_N TEGRA_GPIO(DD, 1) /* Apalis GPIO7 */ -#define RESET_MOCI_CTRL TEGRA_GPIO(U, 4) + 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"); - /* Reset PLX PEX 8605 PCIe Switch plus PCIe devices on Apalis Evaluation - Board */ +#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT gpio_request(PEX_PERST_N, "PEX_PERST_N"); gpio_request(RESET_MOCI_CTRL, "RESET_MOCI_CTRL"); - 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 /* APALIS_T30_PCIE_EVALBOARD_INIT */ +#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 */ |