/* * ATSTK1002/ATSTK1006 daughterboard-specific init code * * Copyright (C) 2005-2007 Atmel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/clk.h> #include <linux/etherdevice.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/string.h> #include <linux/types.h> #include <linux/spi/spi.h> #include <linux/spi/at73c213.h> #include <linux/atmel-mci.h> #include <video/atmel_lcdc.h> #include <asm/io.h> #include <asm/setup.h> #include <mach/at32ap700x.h> #include <mach/board.h> #include <mach/init.h> #include <mach/portmux.h> #include "atstk1000.h" /* Oscillator frequencies. These are board specific */ unsigned long at32_board_osc_rates[3] = { [0] = 32768, /* 32.768 kHz on RTC osc */ [1] = 20000000, /* 20 MHz on osc0 */ [2] = 12000000, /* 12 MHz on osc1 */ }; /* * The ATSTK1006 daughterboard is very similar to the ATSTK1002. Both * have the AT32AP7000 chip on board; the difference is that the * STK1006 has 128 MB SDRAM (the STK1002 uses the 8 MB SDRAM chip on * the STK1000 motherboard) and 256 MB NAND flash (the STK1002 has * none.) * * The RAM difference is handled by the boot loader, so the only * difference we end up handling here is the NAND flash. */ #ifdef CONFIG_BOARD_ATSTK1006 #include <linux/mtd/partitions.h> #include <mach/smc.h> static struct smc_timing nand_timing __initdata = { .ncs_read_setup = 0, .nrd_setup = 10, .ncs_write_setup = 0, .nwe_setup = 10, .ncs_read_pulse = 30, .nrd_pulse = 15, .ncs_write_pulse = 30, .nwe_pulse = 15, .read_cycle = 30, .write_cycle = 30, .ncs_read_recover = 0, .nrd_recover = 15, .ncs_write_recover = 0, /* WE# high -> RE# low min 60 ns */ .nwe_recover = 50, }; static struct smc_config nand_config __initdata = { .bus_width = 1, .nrd_controlled = 1, .nwe_controlled = 1, .nwait_mode = 0, .byte_write = 0, .tdf_cycles = 2, .tdf_mode = 0, }; static struct mtd_partition nand_partitions[] = { { .name = "main", .offset = 0x00000000, .size = MTDPART_SIZ_FULL, }, }; static struct atmel_nand_data atstk1006_nand_data __initdata = { .cle = 21, .ale = 22, .rdy_pin = GPIO_PIN_PB(30), .enable_pin = GPIO_PIN_PB(29), .ecc_mode = NAND_ECC_SOFT, .parts = nand_partitions, .num_parts = ARRAY_SIZE(nand_partitions), }; #endif struct eth_addr { u8 addr[6]; }; static struct eth_addr __initdata hw_addr[2]; static struct macb_platform_data __initdata eth_data[2] = { { /* * The MDIO pullups on STK1000 are a bit too weak for * the autodetection to work properly, so we have to * mask out everything but the correct address. */ .phy_mask = ~(1U << 16), }, { .phy_mask = ~(1U << 17), }, }; #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC static struct at73c213_board_info at73c213_data = { .ssc_id = 0, .shortname = "AVR32 STK1000 external DAC", }; #endif #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM static struct spi_board_info spi0_board_info[] __initdata = { #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC { /* AT73C213 */ .modalias = "at73c213", .max_speed_hz = 200000, .chip_select = 0, .mode = SPI_MODE_1, .platform_data = &at73c213_data, }, #endif { /* QVGA display */ .modalias = "ltv350qv", .max_speed_hz = 16000000, .chip_select = 1, .mode = SPI_MODE_3, }, }; #endif #ifdef CONFIG_BOARD_ATSTK100X_SPI1 static struct spi_board_info spi1_board_info[] __initdata = { { /* patch in custom entries here */ } }; #endif /* * The next two functions should go away as the boot loader is * supposed to initialize the macb address registers with a valid * ethernet address. But we need to keep it around for a while until * we can be reasonably sure the boot loader does this. * * The phy_id is ignored as the driver will probe for it. */ static int __init parse_tag_ethernet(struct tag *tag) { int i; i = tag->u.ethernet.mac_index; if (i < ARRAY_SIZE(hw_addr)) memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address, sizeof(hw_addr[i].addr)); return 0; } __tagtable(ATAG_ETHERNET, parse_tag_ethernet); static void __init set_hw_addr(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); const u8 *addr; void __iomem *regs; struct clk *pclk; if (!res) return; if (pdev->id >= ARRAY_SIZE(hw_addr)) return; addr = hw_addr[pdev->id].addr; if (!is_valid_ether_addr(addr)) return; /* * Since this is board-specific code, we'll cheat and use the * physical address directly as we happen to know that it's * the same as the virtual address. */ regs = (void __iomem __force *)res->start; pclk = clk_get(&pdev->dev, "pclk"); if (IS_ERR(pclk)) return; clk_enable(pclk); __raw_writel((addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0], regs + 0x98); __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c); clk_disable(pclk); clk_put(pclk); } #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC static void __init atstk1002_setup_extdac(void) { struct clk *gclk; struct clk *pll; gclk = clk_get(NULL, "gclk0"); if (IS_ERR(gclk)) goto err_gclk; pll = clk_get(NULL, "pll0"); if (IS_ERR(pll)) goto err_pll; if (clk_set_parent(gclk, pll)) { pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n"); goto err_set_clk; } at32_select_periph(GPIO_PIOA_BASE, (1 << 30), GPIO_PERIPH_A, 0); at73c213_data.dac_clk = gclk; err_set_clk: clk_put(pll); err_pll: clk_put(gclk); err_gclk: return; } #else static void __init atstk1002_setup_extdac(void) { } #endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */ void __init setup_board(void) { #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */ #else at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */ #endif /* USART 2/unused: expansion connector */ at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */ at32_setup_serial_console(0); } #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM static struct mci_platform_data __initdata mci0_data = { .slot[0] = { .bus_width = 4, /* MMC card detect requires MACB0 *NOT* be used */ #ifdef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM .detect_pin = GPIO_PIN_PC(14), /* gpio30/sdcd */ .wp_pin = GPIO_PIN_PC(15), /* gpio31/sdwp */ #else .detect_pin = -ENODEV, .wp_pin = -ENODEV, #endif /* SW6 for sd{cd,wp} routing */ }, }; #endif /* SW2 for MMC signal routing */ static int __init atstk1002_init(void) { /* * ATSTK1000 uses 32-bit SDRAM interface. Reserve the * SDRAM-specific pins so that nobody messes with them. */ at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL); #ifdef CONFIG_BOARD_ATSTK1006 smc_set_timing(&nand_config, &nand_timing); smc_set_configuration(3, &nand_config); at32_add_device_nand(0, &atstk1006_nand_data); #endif #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM at32_add_device_usart(1); #else at32_add_device_usart(0); #endif at32_add_device_usart(2); #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM set_hw_addr(at32_add_device_eth(0, ð_data[0])); #endif #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info)); #endif #ifdef CONFIG_BOARD_ATSTK100X_SPI1 at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info)); #endif #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM at32_add_device_mci(0, &mci0_data); #endif #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM set_hw_addr(at32_add_device_eth(1, ð_data[1])); #else at32_add_device_lcdc(0, &atstk1000_lcdc_data, fbmem_start, fbmem_size, ATMEL_LCDC_PRI_24BIT | ATMEL_LCDC_PRI_CONTROL); #endif at32_add_device_usba(0, NULL); #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM at32_add_device_ssc(0, ATMEL_SSC_TX); #endif atstk1000_setup_j2_leds(); atstk1002_setup_extdac(); return 0; } postcore_initcall(atstk1002_init);