davinci: dm365: add NAND support to EVM board (37b798da) · Commits · e / devices / android_kernel_oneplus_sm7250

arch/arm/mach-davinci/board-dm365-evm.c

+84 −0

Original line number	Original line	Diff line number	Diff line
	@@ -20,6 +20,9 @@
	#include <linux/io.h>		#include <linux/io.h>
	#include <linux/clk.h>		#include <linux/clk.h>
	#include <linux/i2c/at24.h>		#include <linux/i2c/at24.h>
			#include <linux/mtd/mtd.h>
			#include <linux/mtd/partitions.h>
			#include <linux/mtd/nand.h>
	#include <asm/setup.h>		#include <asm/setup.h>
	#include <asm/mach-types.h>		#include <asm/mach-types.h>
	#include <asm/mach/arch.h>		#include <asm/mach/arch.h>
	@@ -34,10 +37,84 @@
	#include <mach/serial.h>		#include <mach/serial.h>
	#include <mach/common.h>		#include <mach/common.h>
	#include <mach/mmc.h>		#include <mach/mmc.h>
			#include <mach/nand.h>

			#define DM365_ASYNC_EMIF_CONTROL_BASE 0x01d10000
			#define DM365_ASYNC_EMIF_DATA_CE0_BASE 0x02000000

	#define DM365_EVM_PHY_MASK (0x2)		#define DM365_EVM_PHY_MASK (0x2)
	#define DM365_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */		#define DM365_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */

			/* NOTE: this is geared for the standard config, with a socketed
			* 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
			* swap chips with a different block size, partitioning will
			* need to be changed. This NAND chip MT29F16G08FAA is the default
			* NAND shipped with the Spectrum Digital DM365 EVM
			*/
			#define NAND_BLOCK_SIZE SZ_128K

			static struct mtd_partition davinci_nand_partitions[] = {
			{
			/* UBL (a few copies) plus U-Boot */
			.name = "bootloader",
			.offset = 0,
			.size = 28 * NAND_BLOCK_SIZE,
			.mask_flags = MTD_WRITEABLE, /* force read-only */
			}, {
			/* U-Boot environment */
			.name = "params",
			.offset = MTDPART_OFS_APPEND,
			.size = 2 * NAND_BLOCK_SIZE,
			.mask_flags = 0,
			}, {
			.name = "kernel",
			.offset = MTDPART_OFS_APPEND,
			.size = SZ_4M,
			.mask_flags = 0,
			}, {
			.name = "filesystem1",
			.offset = MTDPART_OFS_APPEND,
			.size = SZ_512M,
			.mask_flags = 0,
			}, {
			.name = "filesystem2",
			.offset = MTDPART_OFS_APPEND,
			.size = MTDPART_SIZ_FULL,
			.mask_flags = 0,
			}
			/* two blocks with bad block table (and mirror) at the end */
			};

			static struct davinci_nand_pdata davinci_nand_data = {
			.mask_chipsel = BIT(14),
			.parts = davinci_nand_partitions,
			.nr_parts = ARRAY_SIZE(davinci_nand_partitions),
			.ecc_mode = NAND_ECC_HW,
			.options = NAND_USE_FLASH_BBT,
			};

			static struct resource davinci_nand_resources[] = {
			{
			.start = DM365_ASYNC_EMIF_DATA_CE0_BASE,
			.end = DM365_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
			.flags = IORESOURCE_MEM,
			}, {
			.start = DM365_ASYNC_EMIF_CONTROL_BASE,
			.end = DM365_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
			.flags = IORESOURCE_MEM,
			},
			};

			static struct platform_device davinci_nand_device = {
			.name = "davinci_nand",
			.id = 0,
			.num_resources = ARRAY_SIZE(davinci_nand_resources),
			.resource = davinci_nand_resources,
			.dev = {
			.platform_data = &davinci_nand_data,
			},
			};

	static struct at24_platform_data eeprom_info = {		static struct at24_platform_data eeprom_info = {
	.byte_len = (256*1024) / 8,		.byte_len = (256*1024) / 8,
	.page_size = 64,		.page_size = 64,
	@@ -122,6 +199,10 @@ static void __init evm_init_i2c(void)
	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));		i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
	}		}

			static struct platform_device *dm365_evm_devices[] __initdata = {
			&davinci_nand_device,
			};

	static struct davinci_uart_config uart_config __initdata = {		static struct davinci_uart_config uart_config __initdata = {
	.enabled_uarts = (1 << 0),		.enabled_uarts = (1 << 0),
	};		};
	@@ -135,6 +216,9 @@ static __init void dm365_evm_init(void)
	{		{
	struct davinci_soc_info *soc_info = &davinci_soc_info;		struct davinci_soc_info *soc_info = &davinci_soc_info;

			platform_add_devices(dm365_evm_devices,
			ARRAY_SIZE(dm365_evm_devices));

	evm_init_i2c();		evm_init_i2c();
	davinci_serial_init(&uart_config);		davinci_serial_init(&uart_config);