upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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346 lines
8.3 KiB
346 lines
8.3 KiB
/*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Author: Fabio Estevam <fabio.estevam@freescale.com>
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*
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* Copyright (C) 2013, 2014 TQ Systems (ported SabreSD to TQMa6x)
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* Author: Markus Niebel <markus.niebel@tq-group.com>
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*
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* Copyright (C) 2015 Stefan Roese <sr@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/iomux.h>
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#include <asm/arch/sys_proto.h>
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#include <linux/errno.h>
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#include <asm/gpio.h>
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#include <asm/imx-common/boot_mode.h>
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#include <asm/imx-common/mxc_i2c.h>
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#include <common.h>
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#include <fsl_esdhc.h>
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#include <libfdt.h>
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#include <malloc.h>
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#include <i2c.h>
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#include <micrel.h>
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#include <miiphy.h>
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#include <mmc.h>
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#include <netdev.h>
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#include "tqma6_bb.h"
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/* UART */
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#define UART4_PAD_CTRL ( \
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PAD_CTL_HYS | \
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PAD_CTL_PUS_100K_UP | \
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PAD_CTL_PUE | \
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PAD_CTL_PKE | \
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PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_SLOW \
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)
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static iomux_v3_cfg_t const uart4_pads[] = {
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NEW_PAD_CTRL(MX6_PAD_CSI0_DAT17__UART4_CTS_B, UART4_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_CSI0_DAT16__UART4_RTS_B, UART4_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_CSI0_DAT13__UART4_RX_DATA, UART4_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_CSI0_DAT12__UART4_TX_DATA, UART4_PAD_CTRL),
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};
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static void setup_iomuxc_uart4(void)
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{
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imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
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}
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/* MMC */
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#define USDHC2_PAD_CTRL ( \
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PAD_CTL_HYS | \
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PAD_CTL_PUS_47K_UP | \
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PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_80ohm | \
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PAD_CTL_SRE_FAST \
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)
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#define USDHC2_CLK_PAD_CTRL ( \
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PAD_CTL_HYS | \
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PAD_CTL_PUS_47K_UP | \
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PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_FAST \
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)
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static iomux_v3_cfg_t const usdhc2_pads[] = {
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NEW_PAD_CTRL(MX6_PAD_SD2_CLK__SD2_CLK, USDHC2_CLK_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD2_CMD__SD2_CMD, USDHC2_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD2_DAT0__SD2_DATA0, USDHC2_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD2_DAT1__SD2_DATA1, USDHC2_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD2_DAT2__SD2_DATA2, USDHC2_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_SD2_DAT3__SD2_DATA3, USDHC2_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_GPIO_4__GPIO1_IO04, USDHC2_PAD_CTRL), /* CD */
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NEW_PAD_CTRL(MX6_PAD_GPIO_2__SD2_WP, USDHC2_PAD_CTRL), /* WP */
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};
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#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)
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#define USDHC2_WP_GPIO IMX_GPIO_NR(1, 2)
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static struct fsl_esdhc_cfg usdhc2_cfg = {
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.esdhc_base = USDHC2_BASE_ADDR,
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.max_bus_width = 4,
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};
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int tqma6_bb_board_mmc_getcd(struct mmc *mmc)
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{
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struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
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int ret = 0;
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if (cfg->esdhc_base == USDHC2_BASE_ADDR)
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ret = !gpio_get_value(USDHC2_CD_GPIO);
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return ret;
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}
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int tqma6_bb_board_mmc_getwp(struct mmc *mmc)
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{
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struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
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int ret = 0;
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if (cfg->esdhc_base == USDHC2_BASE_ADDR)
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ret = gpio_get_value(USDHC2_WP_GPIO);
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return ret;
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}
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int tqma6_bb_board_mmc_init(bd_t *bis)
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{
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int ret;
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imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
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ret = gpio_request(USDHC2_CD_GPIO, "mmc-cd");
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if (!ret)
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gpio_direction_input(USDHC2_CD_GPIO);
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ret = gpio_request(USDHC2_WP_GPIO, "mmc-wp");
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if (!ret)
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gpio_direction_input(USDHC2_WP_GPIO);
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usdhc2_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
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if(fsl_esdhc_initialize(bis, &usdhc2_cfg))
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puts("WARNING: failed to initialize SD\n");
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return 0;
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}
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/* Ethernet */
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#define ENET_PAD_CTRL ( \
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PAD_CTL_HYS | \
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PAD_CTL_PUS_100K_UP | \
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PAD_CTL_PUE | \
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PAD_CTL_PKE | \
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PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_SLOW \
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)
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static iomux_v3_cfg_t const enet_pads[] = {
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NEW_PAD_CTRL(MX6_PAD_ENET_MDC__ENET_MDC, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_MDIO__ENET_MDIO, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_GPIO_16__ENET_REF_CLK, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_RXD0__ENET_RX_DATA0, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_RXD1__ENET_RX_DATA1, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_CRS_DV__ENET_RX_EN, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_RX_ER__ENET_RX_ER, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_TXD0__ENET_TX_DATA0, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_TXD1__ENET_TX_DATA1, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_ENET_TX_EN__ENET_TX_EN, ENET_PAD_CTRL),
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NEW_PAD_CTRL(MX6_PAD_GPIO_19__ENET_TX_ER, ENET_PAD_CTRL),
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/* ENET1 reset */
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NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, ENET_PAD_CTRL),
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/* ENET1 interrupt */
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NEW_PAD_CTRL(MX6_PAD_GPIO_9__GPIO1_IO09, ENET_PAD_CTRL),
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};
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#define ENET_PHY_RESET_GPIO IMX_GPIO_NR(1, 8)
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static void setup_iomuxc_enet(void)
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{
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int ret;
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imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
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/* Reset LAN8720 PHY */
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ret = gpio_request(ENET_PHY_RESET_GPIO, "phy-reset");
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if (!ret)
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gpio_direction_output(ENET_PHY_RESET_GPIO , 0);
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udelay(25000);
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gpio_set_value(ENET_PHY_RESET_GPIO, 1);
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}
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int board_eth_init(bd_t *bis)
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{
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return cpu_eth_init(bis);
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}
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/* GPIO */
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#define GPIO_PAD_CTRL ( \
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PAD_CTL_HYS | \
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PAD_CTL_PUS_100K_UP | \
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PAD_CTL_PUE | \
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PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_SLOW \
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)
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#define GPIO_OD_PAD_CTRL ( \
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PAD_CTL_HYS | \
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PAD_CTL_PUS_100K_UP | \
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PAD_CTL_PUE | \
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PAD_CTL_ODE | \
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PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_SLOW \
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)
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static iomux_v3_cfg_t const gpio_pads[] = {
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/* USB_H_PWR */
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NEW_PAD_CTRL(MX6_PAD_GPIO_0__GPIO1_IO00, GPIO_PAD_CTRL),
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/* USB_OTG_PWR */
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NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, GPIO_PAD_CTRL),
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/* PCIE_RST */
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NEW_PAD_CTRL(MX6_PAD_NANDF_CLE__GPIO6_IO07, GPIO_OD_PAD_CTRL),
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/* UART1_PWRON */
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NEW_PAD_CTRL(MX6_PAD_DISP0_DAT14__GPIO5_IO08, GPIO_PAD_CTRL),
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/* UART2_PWRON */
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NEW_PAD_CTRL(MX6_PAD_DISP0_DAT16__GPIO5_IO10, GPIO_PAD_CTRL),
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/* UART3_PWRON */
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NEW_PAD_CTRL(MX6_PAD_DISP0_DAT18__GPIO5_IO12, GPIO_PAD_CTRL),
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};
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#define GPIO_USB_H_PWR IMX_GPIO_NR(1, 0)
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#define GPIO_USB_OTG_PWR IMX_GPIO_NR(3, 22)
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#define GPIO_PCIE_RST IMX_GPIO_NR(6, 7)
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#define GPIO_UART1_PWRON IMX_GPIO_NR(5, 8)
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#define GPIO_UART2_PWRON IMX_GPIO_NR(5, 10)
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#define GPIO_UART3_PWRON IMX_GPIO_NR(5, 12)
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static void gpio_init(void)
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{
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int ret;
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imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads));
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ret = gpio_request(GPIO_USB_H_PWR, "usb-h-pwr");
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if (!ret)
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gpio_direction_output(GPIO_USB_H_PWR, 1);
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ret = gpio_request(GPIO_USB_OTG_PWR, "usb-otg-pwr");
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if (!ret)
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gpio_direction_output(GPIO_USB_OTG_PWR, 1);
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ret = gpio_request(GPIO_PCIE_RST, "pcie-reset");
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if (!ret)
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gpio_direction_output(GPIO_PCIE_RST, 1);
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ret = gpio_request(GPIO_UART1_PWRON, "uart1-pwr");
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if (!ret)
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gpio_direction_output(GPIO_UART1_PWRON, 0);
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ret = gpio_request(GPIO_UART2_PWRON, "uart2-pwr");
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if (!ret)
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gpio_direction_output(GPIO_UART2_PWRON, 0);
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ret = gpio_request(GPIO_UART3_PWRON, "uart3-pwr");
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if (!ret)
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gpio_direction_output(GPIO_UART3_PWRON, 0);
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}
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void tqma6_iomuxc_spi(void)
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{
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/* No SPI on this baseboard */
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}
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int tqma6_bb_board_early_init_f(void)
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{
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setup_iomuxc_uart4();
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return 0;
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}
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int tqma6_bb_board_init(void)
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{
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setup_iomuxc_enet();
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gpio_init();
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/* Turn the UART-couplers on one-after-another */
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gpio_set_value(GPIO_UART1_PWRON, 1);
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mdelay(10);
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gpio_set_value(GPIO_UART2_PWRON, 1);
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mdelay(10);
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gpio_set_value(GPIO_UART3_PWRON, 1);
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return 0;
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}
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int tqma6_bb_board_late_init(void)
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{
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return 0;
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}
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const char *tqma6_bb_get_boardname(void)
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{
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return "WRU-IV";
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}
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static const struct boot_mode board_boot_modes[] = {
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/* 4 bit bus width */
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{"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
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/* 8 bit bus width */
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{"emmc", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
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{ NULL, 0 },
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};
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int misc_init_r(void)
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{
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add_board_boot_modes(board_boot_modes);
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return 0;
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}
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#define WRU4_USB_H1_PWR IMX_GPIO_NR(1, 0)
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#define WRU4_USB_OTG_PWR IMX_GPIO_NR(3, 22)
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int board_ehci_hcd_init(int port)
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{
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int ret;
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ret = gpio_request(WRU4_USB_H1_PWR, "usb-h1-pwr");
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if (!ret)
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gpio_direction_output(WRU4_USB_H1_PWR, 1);
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ret = gpio_request(WRU4_USB_OTG_PWR, "usb-OTG-pwr");
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if (!ret)
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gpio_direction_output(WRU4_USB_OTG_PWR, 1);
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return 0;
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}
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int board_ehci_power(int port, int on)
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{
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if (port)
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gpio_set_value(WRU4_USB_OTG_PWR, on);
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else
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gpio_set_value(WRU4_USB_H1_PWR, on);
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return 0;
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}
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/*
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* Device Tree Support
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*/
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#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
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void tqma6_bb_ft_board_setup(void *blob, bd_t *bd)
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{
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/* TBD */
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}
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#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
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