davinci: Add NAND support for DA830/OMAP-L137 EVM platform (733975a3) · Commits · 戴 / test

arch/arm/mach-davinci/Kconfig

+5 −0

Original line number	Diff line number	Diff line
		@@ -122,6 +122,11 @@ config DA830_UI_LCD
		Say Y here to use the LCD as a framebuffer or simple character
		display.

		config DA830_UI_NAND
		bool "NAND flash"
		help
		Say Y here to use the NAND flash. Do not forget to setup
		the switch correctly.
		endchoice

		config MACH_DAVINCI_DA850_EVM

arch/arm/mach-davinci/board-da830-evm.c

+131 −0

Original line number	Diff line number	Diff line
		@@ -14,21 +14,28 @@
		#include <linux/console.h>
		#include <linux/interrupt.h>
		#include <linux/gpio.h>
		#include <linux/platform_device.h>
		#include <linux/i2c.h>
		#include <linux/i2c/pcf857x.h>
		#include <linux/i2c/at24.h>
		#include <linux/mtd/mtd.h>
		#include <linux/mtd/partitions.h>

		#include <asm/mach-types.h>
		#include <asm/mach/arch.h>

		#include <mach/cp_intc.h>
		#include <mach/mux.h>
		#include <mach/nand.h>
		#include <mach/da8xx.h>
		#include <mach/usb.h>

		#define DA830_EVM_PHY_MASK 0x0
		#define DA830_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */

		#define DA830_EMIF25_ASYNC_DATA_CE3_BASE 0x62000000
		#define DA830_EMIF25_CONTROL_BASE 0x68000000

		static struct at24_platform_data da830_evm_i2c_eeprom_info = {
		.byte_len = SZ_256K / 8,
		.page_size = 64,
		@@ -313,6 +320,118 @@ static inline void da830_evm_init_mmc(void)
		}
		}

		#ifdef CONFIG_DA830_UI_NAND
		static struct mtd_partition da830_evm_nand_partitions[] = {
		/* bootloader (U-Boot, etc) in first sector */
		[0] = {
		.name = "bootloader",
		.offset = 0,
		.size = SZ_128K,
		.mask_flags = MTD_WRITEABLE, /* force read-only */
		},
		/* bootloader params in the next sector */
		[1] = {
		.name = "params",
		.offset = MTDPART_OFS_APPEND,
		.size = SZ_128K,
		.mask_flags = MTD_WRITEABLE, /* force read-only */
		},
		/* kernel */
		[2] = {
		.name = "kernel",
		.offset = MTDPART_OFS_APPEND,
		.size = SZ_2M,
		.mask_flags = 0,
		},
		/* file system */
		[3] = {
		.name = "filesystem",
		.offset = MTDPART_OFS_APPEND,
		.size = MTDPART_SIZ_FULL,
		.mask_flags = 0,
		}
		};

		/* flash bbt decriptors */
		static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
		static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };

		static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
		.options = NAND_BBT_LASTBLOCK \| NAND_BBT_CREATE \|
		NAND_BBT_WRITE \| NAND_BBT_2BIT \|
		NAND_BBT_VERSION \| NAND_BBT_PERCHIP,
		.offs = 2,
		.len = 4,
		.veroffs = 16,
		.maxblocks = 4,
		.pattern = da830_evm_nand_bbt_pattern
		};

		static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
		.options = NAND_BBT_LASTBLOCK \| NAND_BBT_CREATE \|
		NAND_BBT_WRITE \| NAND_BBT_2BIT \|
		NAND_BBT_VERSION \| NAND_BBT_PERCHIP,
		.offs = 2,
		.len = 4,
		.veroffs = 16,
		.maxblocks = 4,
		.pattern = da830_evm_nand_mirror_pattern
		};

		static struct davinci_nand_pdata da830_evm_nand_pdata = {
		.parts = da830_evm_nand_partitions,
		.nr_parts = ARRAY_SIZE(da830_evm_nand_partitions),
		.ecc_mode = NAND_ECC_HW,
		.ecc_bits = 4,
		.options = NAND_USE_FLASH_BBT,
		.bbt_td = &da830_evm_nand_bbt_main_descr,
		.bbt_md = &da830_evm_nand_bbt_mirror_descr,
		};

		static struct resource da830_evm_nand_resources[] = {
		[0] = { /* First memory resource is NAND I/O window */
		.start = DA830_EMIF25_ASYNC_DATA_CE3_BASE,
		.end = DA830_EMIF25_ASYNC_DATA_CE3_BASE + PAGE_SIZE - 1,
		.flags = IORESOURCE_MEM,
		},
		[1] = { /* Second memory resource is AEMIF control registers */
		.start = DA830_EMIF25_CONTROL_BASE,
		.end = DA830_EMIF25_CONTROL_BASE + SZ_32K - 1,
		.flags = IORESOURCE_MEM,
		},
		};

		static struct platform_device da830_evm_nand_device = {
		.name = "davinci_nand",
		.id = 1,
		.dev = {
		.platform_data = &da830_evm_nand_pdata,
		},
		.num_resources = ARRAY_SIZE(da830_evm_nand_resources),
		.resource = da830_evm_nand_resources,
		};
		#endif

		static struct platform_device *da830_evm_devices[] __initdata = {
		#ifdef CONFIG_DA830_UI_NAND
		&da830_evm_nand_device,
		#endif
		};

		/*
		* UI board NAND/NOR flashes only use 8-bit data bus.
		*/
		static const short da830_evm_emif25_pins[] = {
		DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3,
		DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7,
		DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3,
		DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7,
		DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11,
		DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE,
		DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0,
		-1
		};

		static __init void da830_evm_init(void)
		{
		struct davinci_soc_info *soc_info = &davinci_soc_info;
		@@ -367,6 +486,7 @@ static __init void da830_evm_init(void)

		da830_evm_init_mmc();

		#ifdef CONFIG_DA830_UI
		#ifdef CONFIG_DA830_UI_LCD
		ret = da8xx_pinmux_setup(da830_lcdcntl_pins);
		if (ret)
		@@ -376,6 +496,17 @@ static __init void da830_evm_init(void)
		ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
		if (ret)
		pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
		#else /* Must be NAND or NOR */
		ret = da8xx_pinmux_setup(da830_evm_emif25_pins);
		if (ret)
		pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
		ret);

		ret = platform_add_devices(da830_evm_devices,
		ARRAY_SIZE(da830_evm_devices));
		if (ret)
		pr_warning("da830_evm_init: EVM devices not added\n");
		#endif
		#endif

		ret = da8xx_register_rtc();

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