| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * arch/arm/mach-ep93xx/ts72xx.c |
| * Technologic Systems TS72xx SBC support. |
| * |
| * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/io.h> |
| #include <linux/mtd/platnand.h> |
| #include <linux/spi/spi.h> |
| #include <linux/spi/flash.h> |
| #include <linux/spi/mmc_spi.h> |
| #include <linux/mmc/host.h> |
| #include <linux/platform_data/spi-ep93xx.h> |
| #include <linux/gpio/machine.h> |
| |
| #include "gpio-ep93xx.h" |
| #include "hardware.h" |
| #include <mach/irqs.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/arch.h> |
| |
| #include "soc.h" |
| #include "ts72xx.h" |
| |
| /************************************************************************* |
| * IO map |
| *************************************************************************/ |
| static struct map_desc ts72xx_io_desc[] __initdata = { |
| { |
| .virtual = (unsigned long)TS72XX_MODEL_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE), |
| .length = TS72XX_MODEL_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_OPTIONS_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE), |
| .length = TS72XX_OPTIONS_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_OPTIONS2_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), |
| .length = TS72XX_OPTIONS2_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_CPLDVER_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_CPLDVER_PHYS_BASE), |
| .length = TS72XX_CPLDVER_SIZE, |
| .type = MT_DEVICE, |
| } |
| }; |
| |
| static void __init ts72xx_map_io(void) |
| { |
| ep93xx_map_io(); |
| iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc)); |
| } |
| |
| |
| /************************************************************************* |
| * NAND flash |
| *************************************************************************/ |
| #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */ |
| #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */ |
| |
| static void ts72xx_nand_hwcontrol(struct nand_chip *chip, |
| int cmd, unsigned int ctrl) |
| { |
| if (ctrl & NAND_CTRL_CHANGE) { |
| void __iomem *addr = chip->legacy.IO_ADDR_R; |
| unsigned char bits; |
| |
| addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE); |
| |
| bits = __raw_readb(addr) & ~0x07; |
| bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */ |
| bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */ |
| bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */ |
| |
| __raw_writeb(bits, addr); |
| } |
| |
| if (cmd != NAND_CMD_NONE) |
| __raw_writeb(cmd, chip->legacy.IO_ADDR_W); |
| } |
| |
| static int ts72xx_nand_device_ready(struct nand_chip *chip) |
| { |
| void __iomem *addr = chip->legacy.IO_ADDR_R; |
| |
| addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE); |
| |
| return !!(__raw_readb(addr) & 0x20); |
| } |
| |
| #define TS72XX_BOOTROM_PART_SIZE (SZ_16K) |
| #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M) |
| |
| static struct mtd_partition ts72xx_nand_parts[] = { |
| { |
| .name = "TS-BOOTROM", |
| .offset = 0, |
| .size = TS72XX_BOOTROM_PART_SIZE, |
| .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| }, { |
| .name = "Linux", |
| .offset = MTDPART_OFS_RETAIN, |
| .size = TS72XX_REDBOOT_PART_SIZE, |
| /* leave so much for last partition */ |
| }, { |
| .name = "RedBoot", |
| .offset = MTDPART_OFS_APPEND, |
| .size = MTDPART_SIZ_FULL, |
| .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| }, |
| }; |
| |
| static struct platform_nand_data ts72xx_nand_data = { |
| .chip = { |
| .nr_chips = 1, |
| .chip_offset = 0, |
| .chip_delay = 15, |
| }, |
| .ctrl = { |
| .cmd_ctrl = ts72xx_nand_hwcontrol, |
| .dev_ready = ts72xx_nand_device_ready, |
| }, |
| }; |
| |
| static struct resource ts72xx_nand_resource[] = { |
| { |
| .start = 0, /* filled in later */ |
| .end = 0, /* filled in later */ |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct platform_device ts72xx_nand_flash = { |
| .name = "gen_nand", |
| .id = -1, |
| .dev.platform_data = &ts72xx_nand_data, |
| .resource = ts72xx_nand_resource, |
| .num_resources = ARRAY_SIZE(ts72xx_nand_resource), |
| }; |
| |
| void __init ts72xx_register_flash(struct mtd_partition *parts, int n, |
| resource_size_t start) |
| { |
| /* |
| * TS7200 has NOR flash all other TS72xx board have NAND flash. |
| */ |
| if (board_is_ts7200()) { |
| ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); |
| } else { |
| ts72xx_nand_resource[0].start = start; |
| ts72xx_nand_resource[0].end = start + SZ_16M - 1; |
| |
| ts72xx_nand_data.chip.partitions = parts; |
| ts72xx_nand_data.chip.nr_partitions = n; |
| |
| platform_device_register(&ts72xx_nand_flash); |
| } |
| } |
| |
| /************************************************************************* |
| * RTC M48T86 |
| *************************************************************************/ |
| #define TS72XX_RTC_INDEX_PHYS_BASE (EP93XX_CS1_PHYS_BASE + 0x00800000) |
| #define TS72XX_RTC_DATA_PHYS_BASE (EP93XX_CS1_PHYS_BASE + 0x01700000) |
| |
| static struct resource ts72xx_rtc_resources[] = { |
| DEFINE_RES_MEM(TS72XX_RTC_INDEX_PHYS_BASE, 0x01), |
| DEFINE_RES_MEM(TS72XX_RTC_DATA_PHYS_BASE, 0x01), |
| }; |
| |
| static struct platform_device ts72xx_rtc_device = { |
| .name = "rtc-m48t86", |
| .id = -1, |
| .resource = ts72xx_rtc_resources, |
| .num_resources = ARRAY_SIZE(ts72xx_rtc_resources), |
| }; |
| |
| /************************************************************************* |
| * Watchdog (in CPLD) |
| *************************************************************************/ |
| #define TS72XX_WDT_CONTROL_PHYS_BASE (EP93XX_CS2_PHYS_BASE + 0x03800000) |
| #define TS72XX_WDT_FEED_PHYS_BASE (EP93XX_CS2_PHYS_BASE + 0x03c00000) |
| |
| static struct resource ts72xx_wdt_resources[] = { |
| DEFINE_RES_MEM(TS72XX_WDT_CONTROL_PHYS_BASE, 0x01), |
| DEFINE_RES_MEM(TS72XX_WDT_FEED_PHYS_BASE, 0x01), |
| }; |
| |
| static struct platform_device ts72xx_wdt_device = { |
| .name = "ts72xx-wdt", |
| .id = -1, |
| .resource = ts72xx_wdt_resources, |
| .num_resources = ARRAY_SIZE(ts72xx_wdt_resources), |
| }; |
| |
| /************************************************************************* |
| * ETH |
| *************************************************************************/ |
| static struct ep93xx_eth_data __initdata ts72xx_eth_data = { |
| .phy_id = 1, |
| }; |
| |
| /************************************************************************* |
| * SPI SD/MMC host |
| *************************************************************************/ |
| #define BK3_EN_SDCARD_PHYS_BASE 0x12400000 |
| #define BK3_EN_SDCARD_PWR 0x0 |
| #define BK3_DIS_SDCARD_PWR 0x0C |
| static void bk3_mmc_spi_setpower(struct device *dev, unsigned int vdd) |
| { |
| void __iomem *pwr_sd = ioremap(BK3_EN_SDCARD_PHYS_BASE, SZ_4K); |
| |
| if (!pwr_sd) { |
| pr_err("Failed to enable SD card power!"); |
| return; |
| } |
| |
| pr_debug("%s: SD card pwr %s VDD:0x%x\n", __func__, |
| !!vdd ? "ON" : "OFF", vdd); |
| |
| if (!!vdd) |
| __raw_writeb(BK3_EN_SDCARD_PWR, pwr_sd); |
| else |
| __raw_writeb(BK3_DIS_SDCARD_PWR, pwr_sd); |
| |
| iounmap(pwr_sd); |
| } |
| |
| static struct mmc_spi_platform_data bk3_spi_mmc_data = { |
| .detect_delay = 500, |
| .powerup_msecs = 100, |
| .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, |
| .caps = MMC_CAP_NONREMOVABLE, |
| .setpower = bk3_mmc_spi_setpower, |
| }; |
| |
| /************************************************************************* |
| * SPI Bus - SD card access |
| *************************************************************************/ |
| static struct spi_board_info bk3_spi_board_info[] __initdata = { |
| { |
| .modalias = "mmc_spi", |
| .platform_data = &bk3_spi_mmc_data, |
| .max_speed_hz = 7.4E6, |
| .bus_num = 0, |
| .chip_select = 0, |
| .mode = SPI_MODE_0, |
| }, |
| }; |
| |
| /* |
| * This is a stub -> the FGPIO[3] pin is not connected on the schematic |
| * The all work is performed automatically by !SPI_FRAME (SFRM1) and |
| * goes through CPLD |
| */ |
| static struct gpiod_lookup_table bk3_spi_cs_gpio_table = { |
| .dev_id = "ep93xx-spi.0", |
| .table = { |
| GPIO_LOOKUP("F", 3, "cs", GPIO_ACTIVE_LOW), |
| { }, |
| }, |
| }; |
| |
| static struct ep93xx_spi_info bk3_spi_master __initdata = { |
| .use_dma = 1, |
| }; |
| |
| /************************************************************************* |
| * TS72XX support code |
| *************************************************************************/ |
| #if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX) |
| |
| /* Relative to EP93XX_CS1_PHYS_BASE */ |
| #define TS73XX_FPGA_LOADER_BASE 0x03c00000 |
| |
| static struct resource ts73xx_fpga_resources[] = { |
| { |
| .start = EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE, |
| .end = EP93XX_CS1_PHYS_BASE + TS73XX_FPGA_LOADER_BASE + 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct platform_device ts73xx_fpga_device = { |
| .name = "ts73xx-fpga-mgr", |
| .id = -1, |
| .resource = ts73xx_fpga_resources, |
| .num_resources = ARRAY_SIZE(ts73xx_fpga_resources), |
| }; |
| |
| #endif |
| |
| /************************************************************************* |
| * SPI Bus |
| *************************************************************************/ |
| static struct spi_board_info ts72xx_spi_devices[] __initdata = { |
| { |
| .modalias = "tmp122", |
| .max_speed_hz = 2 * 1000 * 1000, |
| .bus_num = 0, |
| .chip_select = 0, |
| }, |
| }; |
| |
| static struct gpiod_lookup_table ts72xx_spi_cs_gpio_table = { |
| .dev_id = "ep93xx-spi.0", |
| .table = { |
| /* DIO_17 */ |
| GPIO_LOOKUP("F", 2, "cs", GPIO_ACTIVE_LOW), |
| { }, |
| }, |
| }; |
| |
| static struct ep93xx_spi_info ts72xx_spi_info __initdata = { |
| /* Intentionally left blank */ |
| }; |
| |
| static void __init ts72xx_init_machine(void) |
| { |
| ep93xx_init_devices(); |
| ts72xx_register_flash(ts72xx_nand_parts, ARRAY_SIZE(ts72xx_nand_parts), |
| is_ts9420_installed() ? |
| EP93XX_CS7_PHYS_BASE : EP93XX_CS6_PHYS_BASE); |
| platform_device_register(&ts72xx_rtc_device); |
| platform_device_register(&ts72xx_wdt_device); |
| |
| ep93xx_register_eth(&ts72xx_eth_data, 1); |
| #if IS_ENABLED(CONFIG_FPGA_MGR_TS73XX) |
| if (board_is_ts7300()) |
| platform_device_register(&ts73xx_fpga_device); |
| #endif |
| gpiod_add_lookup_table(&ts72xx_spi_cs_gpio_table); |
| ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices, |
| ARRAY_SIZE(ts72xx_spi_devices)); |
| } |
| |
| MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") |
| /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ |
| .atag_offset = 0x100, |
| .map_io = ts72xx_map_io, |
| .init_irq = ep93xx_init_irq, |
| .init_time = ep93xx_timer_init, |
| .init_machine = ts72xx_init_machine, |
| .init_late = ep93xx_init_late, |
| .restart = ep93xx_restart, |
| MACHINE_END |
| |
| /************************************************************************* |
| * EP93xx I2S audio peripheral handling |
| *************************************************************************/ |
| static struct resource ep93xx_i2s_resource[] = { |
| DEFINE_RES_MEM(EP93XX_I2S_PHYS_BASE, 0x100), |
| DEFINE_RES_IRQ_NAMED(IRQ_EP93XX_SAI, "spilink i2s slave"), |
| }; |
| |
| static struct platform_device ep93xx_i2s_device = { |
| .name = "ep93xx-spilink-i2s", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(ep93xx_i2s_resource), |
| .resource = ep93xx_i2s_resource, |
| }; |
| |
| /************************************************************************* |
| * BK3 support code |
| *************************************************************************/ |
| static struct mtd_partition bk3_nand_parts[] = { |
| { |
| .name = "System", |
| .offset = 0x00000000, |
| .size = 0x01e00000, |
| }, { |
| .name = "Data", |
| .offset = 0x01e00000, |
| .size = 0x05f20000 |
| }, { |
| .name = "RedBoot", |
| .offset = 0x07d20000, |
| .size = 0x002e0000, |
| .mask_flags = MTD_WRITEABLE, /* force RO */ |
| }, |
| }; |
| |
| static void __init bk3_init_machine(void) |
| { |
| ep93xx_init_devices(); |
| |
| ts72xx_register_flash(bk3_nand_parts, ARRAY_SIZE(bk3_nand_parts), |
| EP93XX_CS6_PHYS_BASE); |
| |
| ep93xx_register_eth(&ts72xx_eth_data, 1); |
| |
| gpiod_add_lookup_table(&bk3_spi_cs_gpio_table); |
| ep93xx_register_spi(&bk3_spi_master, bk3_spi_board_info, |
| ARRAY_SIZE(bk3_spi_board_info)); |
| |
| /* Configure ep93xx's I2S to use AC97 pins */ |
| ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97); |
| platform_device_register(&ep93xx_i2s_device); |
| } |
| |
| MACHINE_START(BK3, "Liebherr controller BK3.1") |
| /* Maintainer: Lukasz Majewski <lukma@denx.de> */ |
| .atag_offset = 0x100, |
| .map_io = ts72xx_map_io, |
| .init_irq = ep93xx_init_irq, |
| .init_time = ep93xx_timer_init, |
| .init_machine = bk3_init_machine, |
| .init_late = ep93xx_init_late, |
| .restart = ep93xx_restart, |
| MACHINE_END |
