mirror of
https://github.com/AsahiLinux/u-boot
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ebe2e0c309
The MNT Reform 2 is a modular DIY laptop. In its initial version it is based on the BoundaryDevices i.MX8MQ SoM. Some parts have been lifted from BoundaryDevices official U-Boot downstream project. Signed-off-by: Patrick Wildt <patrick@blueri.se> Tested-by: Vagrant Cascadian <vagrant@debian.org> Tested-by: Vagrant Cascadian <vagrant@debian.org> Signed-off-by: Stefano Babic <sbabic@denx.de>
171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2018 NXP
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* Copyright (C) 2018, Boundary Devices <info@boundarydevices.com>
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*/
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#include <common.h>
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#include <env.h>
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#include <init.h>
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#include <malloc.h>
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#include <errno.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <miiphy.h>
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#include <netdev.h>
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#include <asm/mach-imx/iomux-v3.h>
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#include <asm-generic/gpio.h>
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#include <fsl_esdhc_imx.h>
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#include <mmc.h>
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#include <asm/arch/imx8mq_pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/mach-imx/gpio.h>
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#include <asm/mach-imx/mxc_i2c.h>
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#include <asm/arch/clock.h>
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#include <spl.h>
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#include <linux/bitops.h>
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#include <linux/delay.h>
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#include <power/pmic.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
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static iomux_v3_cfg_t const wdog_pads[] = {
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IMX8MQ_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
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};
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int board_early_init_f(void)
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{
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struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
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imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
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set_wdog_reset(wdog);
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return 0;
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}
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#ifdef CONFIG_FEC_MXC
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#define PHY_RESET IMX_GPIO_NR(1, 9)
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#define PHY_RX_CTL IMX_GPIO_NR(1, 24)
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#define PHY_RXC IMX_GPIO_NR(1, 25)
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#define PHY_RD0 IMX_GPIO_NR(1, 26)
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#define PHY_RD1 IMX_GPIO_NR(1, 27)
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#define PHY_RD2 IMX_GPIO_NR(1, 28)
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#define PHY_RD3 IMX_GPIO_NR(1, 29)
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#define STRAP_AR8035 (0x28) // 0010 1000
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static const iomux_v3_cfg_t enet_ar8035_gpio_pads[] = {
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IMX8MQ_PAD_GPIO1_IO09__GPIO1_IO9 | MUX_PAD_CTRL(PAD_CTL_DSE6),
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IMX8MQ_PAD_ENET_RD0__GPIO1_IO26 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RD1__GPIO1_IO27 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RD2__GPIO1_IO28 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RD3__GPIO1_IO29 | MUX_PAD_CTRL(0xd1),
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IMX8MQ_PAD_ENET_RX_CTL__GPIO1_IO24 | MUX_PAD_CTRL(0x91),
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/* 1.8V(1)/1.5V select(0) */
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IMX8MQ_PAD_ENET_RXC__GPIO1_IO25 | MUX_PAD_CTRL(0xd1),
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};
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static const iomux_v3_cfg_t enet_ar8035_pads[] = {
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IMX8MQ_PAD_ENET_RD0__ENET_RGMII_RD0 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RD1__ENET_RGMII_RD1 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RD2__ENET_RGMII_RD2 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RD3__ENET_RGMII_RD3 | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RX_CTL__ENET_RGMII_RX_CTL | MUX_PAD_CTRL(0x91),
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IMX8MQ_PAD_ENET_RXC__ENET_RGMII_RXC | MUX_PAD_CTRL(0x91),
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};
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static void setup_fec(void)
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{
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struct iomuxc_gpr_base_regs *gpr =
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(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
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/* Pull PHY into reset */
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gpio_request(PHY_RESET, "fec_rst");
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gpio_direction_output(PHY_RESET, 0);
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/* Configure ethernet pins value as GPIOs */
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gpio_request(PHY_RD0, "fec_rd0");
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gpio_direction_output(PHY_RD0, 0);
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gpio_request(PHY_RD1, "fec_rd1");
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gpio_direction_output(PHY_RD1, 0);
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gpio_request(PHY_RD2, "fec_rd2");
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gpio_direction_output(PHY_RD2, 0);
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gpio_request(PHY_RD3, "fec_rd3");
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gpio_direction_output(PHY_RD3, 1);
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gpio_request(PHY_RX_CTL, "fec_rx_ctl");
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gpio_direction_output(PHY_RX_CTL, 0);
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gpio_request(PHY_RXC, "fec_rxc");
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gpio_direction_output(PHY_RXC, 1);
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/* Set ethernet pins to GPIO to bootstrap PHY */
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imx_iomux_v3_setup_multiple_pads(enet_ar8035_gpio_pads,
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ARRAY_SIZE(enet_ar8035_gpio_pads));
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/* Use 125M anatop REF_CLK1 for ENET1, not from external */
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clrsetbits_le32(&gpr->gpr[1], BIT(13) | BIT(17), 0);
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/* Enable RGMII TX clk output */
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setbits_le32(&gpr->gpr[1], BIT(22));
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set_clk_enet(ENET_125MHZ);
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/* 1 ms minimum reset pulse for ar8035 */
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mdelay(1);
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/* Release PHY from reset */
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gpio_set_value(PHY_RESET, 1);
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/* strap hold time for AR8035, 5 fails, 6 works, so 12 should be safe */
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udelay(12);
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/* Change ethernet pins back to normal function */
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imx_iomux_v3_setup_multiple_pads(enet_ar8035_pads,
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ARRAY_SIZE(enet_ar8035_pads));
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}
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#endif
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#define USB1_HUB_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
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#define USB1_HUB_RESET IMX_GPIO_NR(1, 14)
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static void setup_usb(void)
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{
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imx_iomux_v3_setup_pad(IMX8MQ_PAD_GPIO1_IO14__GPIO1_IO14 |
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MUX_PAD_CTRL(USB1_HUB_PAD_CTRL));
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gpio_request(USB1_HUB_RESET, "usb1_rst");
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gpio_direction_output(USB1_HUB_RESET, 0);
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mdelay(10);
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gpio_set_value(USB1_HUB_RESET, 1);
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}
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int board_init(void)
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{
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#ifdef CONFIG_FEC_MXC
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setup_fec();
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#endif
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setup_usb();
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#if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_DWC3)
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init_usb_clk();
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#endif
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return 0;
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}
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int board_mmc_get_env_dev(int devno)
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{
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return devno;
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}
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int board_late_init(void)
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{
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#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
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env_set("board_name", "Reform2");
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env_set("board_rev", "iMX8MQ");
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#endif
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return 0;
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}
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