348 lines
8.5 KiB
C
348 lines
8.5 KiB
C
/*
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* ATSTK1002/ATSTK1006 daughterboard-specific init code
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*
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* Copyright (C) 2005-2007 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/etherdevice.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/at73c213.h>
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#include <video/atmel_lcdc.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/atmel-mci.h>
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#include <mach/at32ap700x.h>
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#include <mach/board.h>
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#include <mach/init.h>
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#include <mach/portmux.h>
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#include "atstk1000.h"
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/* Oscillator frequencies. These are board specific */
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unsigned long at32_board_osc_rates[3] = {
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[0] = 32768, /* 32.768 kHz on RTC osc */
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[1] = 20000000, /* 20 MHz on osc0 */
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[2] = 12000000, /* 12 MHz on osc1 */
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};
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/*
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* The ATSTK1006 daughterboard is very similar to the ATSTK1002. Both
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* have the AT32AP7000 chip on board; the difference is that the
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* STK1006 has 128 MB SDRAM (the STK1002 uses the 8 MB SDRAM chip on
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* the STK1000 motherboard) and 256 MB NAND flash (the STK1002 has
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* none.)
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*
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* The RAM difference is handled by the boot loader, so the only
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* difference we end up handling here is the NAND flash.
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*/
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#ifdef CONFIG_BOARD_ATSTK1006
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#include <linux/mtd/partitions.h>
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#include <mach/smc.h>
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static struct smc_timing nand_timing __initdata = {
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.ncs_read_setup = 0,
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.nrd_setup = 10,
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.ncs_write_setup = 0,
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.nwe_setup = 10,
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.ncs_read_pulse = 30,
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.nrd_pulse = 15,
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.ncs_write_pulse = 30,
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.nwe_pulse = 15,
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.read_cycle = 30,
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.write_cycle = 30,
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.ncs_read_recover = 0,
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.nrd_recover = 15,
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.ncs_write_recover = 0,
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/* WE# high -> RE# low min 60 ns */
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.nwe_recover = 50,
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};
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static struct smc_config nand_config __initdata = {
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.bus_width = 1,
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.nrd_controlled = 1,
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.nwe_controlled = 1,
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.nwait_mode = 0,
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.byte_write = 0,
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.tdf_cycles = 2,
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.tdf_mode = 0,
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};
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static struct mtd_partition nand_partitions[] = {
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{
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.name = "main",
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.offset = 0x00000000,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct mtd_partition *nand_part_info(int size, int *num_partitions)
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{
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*num_partitions = ARRAY_SIZE(nand_partitions);
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return nand_partitions;
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}
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static struct atmel_nand_data atstk1006_nand_data __initdata = {
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.cle = 21,
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.ale = 22,
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.rdy_pin = GPIO_PIN_PB(30),
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.enable_pin = GPIO_PIN_PB(29),
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.partition_info = nand_part_info,
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};
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#endif
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struct eth_addr {
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u8 addr[6];
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};
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static struct eth_addr __initdata hw_addr[2];
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static struct eth_platform_data __initdata eth_data[2] = {
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{
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/*
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* The MDIO pullups on STK1000 are a bit too weak for
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* the autodetection to work properly, so we have to
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* mask out everything but the correct address.
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*/
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.phy_mask = ~(1U << 16),
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},
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{
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.phy_mask = ~(1U << 17),
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},
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};
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#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
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static struct at73c213_board_info at73c213_data = {
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.ssc_id = 0,
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.shortname = "AVR32 STK1000 external DAC",
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};
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#endif
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#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
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static struct spi_board_info spi0_board_info[] __initdata = {
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#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
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{
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/* AT73C213 */
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.modalias = "at73c213",
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.max_speed_hz = 200000,
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.chip_select = 0,
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.mode = SPI_MODE_1,
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.platform_data = &at73c213_data,
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},
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#endif
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{
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/* QVGA display */
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.modalias = "ltv350qv",
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.max_speed_hz = 16000000,
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.chip_select = 1,
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.mode = SPI_MODE_3,
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},
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};
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#endif
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#ifdef CONFIG_BOARD_ATSTK100X_SPI1
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static struct spi_board_info spi1_board_info[] __initdata = { {
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/* patch in custom entries here */
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} };
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#endif
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/*
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* The next two functions should go away as the boot loader is
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* supposed to initialize the macb address registers with a valid
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* ethernet address. But we need to keep it around for a while until
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* we can be reasonably sure the boot loader does this.
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*
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* The phy_id is ignored as the driver will probe for it.
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*/
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static int __init parse_tag_ethernet(struct tag *tag)
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{
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int i;
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i = tag->u.ethernet.mac_index;
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if (i < ARRAY_SIZE(hw_addr))
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memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
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sizeof(hw_addr[i].addr));
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return 0;
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}
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__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
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static void __init set_hw_addr(struct platform_device *pdev)
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{
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struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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const u8 *addr;
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void __iomem *regs;
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struct clk *pclk;
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if (!res)
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return;
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if (pdev->id >= ARRAY_SIZE(hw_addr))
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return;
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addr = hw_addr[pdev->id].addr;
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if (!is_valid_ether_addr(addr))
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return;
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/*
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* Since this is board-specific code, we'll cheat and use the
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* physical address directly as we happen to know that it's
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* the same as the virtual address.
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*/
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regs = (void __iomem __force *)res->start;
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pclk = clk_get(&pdev->dev, "pclk");
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if (!pclk)
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return;
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clk_enable(pclk);
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__raw_writel((addr[3] << 24) | (addr[2] << 16)
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| (addr[1] << 8) | addr[0], regs + 0x98);
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__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
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clk_disable(pclk);
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clk_put(pclk);
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}
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#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
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static void __init atstk1002_setup_extdac(void)
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{
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struct clk *gclk;
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struct clk *pll;
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gclk = clk_get(NULL, "gclk0");
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if (IS_ERR(gclk))
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goto err_gclk;
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pll = clk_get(NULL, "pll0");
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if (IS_ERR(pll))
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goto err_pll;
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if (clk_set_parent(gclk, pll)) {
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pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
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goto err_set_clk;
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}
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at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
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at73c213_data.dac_clk = gclk;
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err_set_clk:
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clk_put(pll);
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err_pll:
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clk_put(gclk);
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err_gclk:
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return;
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}
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#else
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static void __init atstk1002_setup_extdac(void)
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{
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}
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#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
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void __init setup_board(void)
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{
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#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
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at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */
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#else
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at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */
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#endif
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/* USART 2/unused: expansion connector */
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at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */
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at32_setup_serial_console(0);
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}
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#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
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/* MMC card detect requires MACB0 *NOT* be used */
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#ifdef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
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static struct mci_platform_data __initdata mci0_data = {
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.detect_pin = GPIO_PIN_PC(14), /* gpio30/sdcd */
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.wp_pin = GPIO_PIN_PC(15), /* gpio31/sdwp */
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};
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#define MCI_PDATA &mci0_data
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#else
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#define MCI_PDATA NULL
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#endif /* SW6 for sd{cd,wp} routing */
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#endif /* SW2 for MMC signal routing */
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static int __init atstk1002_init(void)
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{
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/*
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* ATSTK1000 uses 32-bit SDRAM interface. Reserve the
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* SDRAM-specific pins so that nobody messes with them.
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*/
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at32_reserve_pin(GPIO_PIN_PE(0)); /* DATA[16] */
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at32_reserve_pin(GPIO_PIN_PE(1)); /* DATA[17] */
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at32_reserve_pin(GPIO_PIN_PE(2)); /* DATA[18] */
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at32_reserve_pin(GPIO_PIN_PE(3)); /* DATA[19] */
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at32_reserve_pin(GPIO_PIN_PE(4)); /* DATA[20] */
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at32_reserve_pin(GPIO_PIN_PE(5)); /* DATA[21] */
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at32_reserve_pin(GPIO_PIN_PE(6)); /* DATA[22] */
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at32_reserve_pin(GPIO_PIN_PE(7)); /* DATA[23] */
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at32_reserve_pin(GPIO_PIN_PE(8)); /* DATA[24] */
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at32_reserve_pin(GPIO_PIN_PE(9)); /* DATA[25] */
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at32_reserve_pin(GPIO_PIN_PE(10)); /* DATA[26] */
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at32_reserve_pin(GPIO_PIN_PE(11)); /* DATA[27] */
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at32_reserve_pin(GPIO_PIN_PE(12)); /* DATA[28] */
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at32_reserve_pin(GPIO_PIN_PE(13)); /* DATA[29] */
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at32_reserve_pin(GPIO_PIN_PE(14)); /* DATA[30] */
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at32_reserve_pin(GPIO_PIN_PE(15)); /* DATA[31] */
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at32_reserve_pin(GPIO_PIN_PE(26)); /* SDCS */
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at32_add_system_devices();
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#ifdef CONFIG_BOARD_ATSTK1006
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smc_set_timing(&nand_config, &nand_timing);
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smc_set_configuration(3, &nand_config);
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at32_add_device_nand(0, &atstk1006_nand_data);
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#endif
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#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
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at32_add_device_usart(1);
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#else
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at32_add_device_usart(0);
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#endif
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at32_add_device_usart(2);
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#ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
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set_hw_addr(at32_add_device_eth(0, ð_data[0]));
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#endif
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#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
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at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
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#endif
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#ifdef CONFIG_BOARD_ATSTK100X_SPI1
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at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
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#endif
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#ifndef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
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at32_add_device_mci(0, MCI_PDATA);
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#endif
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#ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
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set_hw_addr(at32_add_device_eth(1, ð_data[1]));
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#else
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at32_add_device_lcdc(0, &atstk1000_lcdc_data,
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fbmem_start, fbmem_size, 0);
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#endif
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at32_add_device_usba(0, NULL);
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#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
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at32_add_device_ssc(0, ATMEL_SSC_TX);
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#endif
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atstk1000_setup_j2_leds();
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atstk1002_setup_extdac();
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return 0;
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}
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postcore_initcall(atstk1002_init);
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