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Commit 87748823 authored by Michael Williamson's avatar Michael Williamson Committed by Kevin Hilman
Browse files

davinci: Add I2C0 devices to MityDSP-L138/MityARM-1808 platform 



This patch adds the i2c0 bus and attached devices to the MityDSP-L138
and MityARM-1808 davinci SoM.  Included is a TPS65023 voltage regulator
needed for power management and a small 24c02 EPROM that contains
factory configuration data.

Signed-off-by: default avatarMichael Williamson <michael.williamson@criticallink.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent b41547c1

arch/arm/mach-davinci/board-mityomapl138.c

+145 −0
Original line number Diff line number Diff line
@@ -13,6 +13,8 @@ 
#include <linux/console.h>

#include <linux/platform_device.h>

#include <linux/mtd/partitions.h>

#include <linux/regulator/machine.h>

#include <linux/i2c.h>



#include <asm/mach-types.h>

#include <asm/mach/arch.h>
@@ -25,6 +27,141 @@ 
#define MITYOMAPL138_PHY_MASK		0x08 /* hardcoded for now */

#define MITYOMAPL138_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */



static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {

	.bus_freq	= 100,	/* kHz */

	.bus_delay	= 0,	/* usec */

};



/* TPS65023 voltage regulator support */

/* 1.2V Core */

struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {

	{

		.supply = "cvdd",

	},

};



/* 1.8V */

struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {

	{

		.supply = "usb0_vdda18",

	},

	{

		.supply = "usb1_vdda18",

	},

	{

		.supply = "ddr_dvdd18",

	},

	{

		.supply = "sata_vddr",

	},

};



/* 1.2V */

struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {

	{

		.supply = "sata_vdd",

	},

	{

		.supply = "usb_cvdd",

	},

	{

		.supply = "pll0_vdda",

	},

	{

		.supply = "pll1_vdda",

	},

};



/* 1.8V Aux LDO, not used */

struct regulator_consumer_supply tps65023_ldo1_consumers[] = {

	{

		.supply = "1.8v_aux",

	},

};



/* FPGA VCC Aux (2.5 or 3.3) LDO */

struct regulator_consumer_supply tps65023_ldo2_consumers[] = {

	{

		.supply = "vccaux",

	},

};



struct regulator_init_data tps65023_regulator_data[] = {

	/* dcdc1 */

	{

		.constraints = {

			.min_uV = 1150000,

			.max_uV = 1350000,

			.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |

					  REGULATOR_CHANGE_STATUS,

			.boot_on = 1,

		},

		.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),

		.consumer_supplies = tps65023_dcdc1_consumers,

	},

	/* dcdc2 */

	{

		.constraints = {

			.min_uV = 1800000,

			.max_uV = 1800000,

			.valid_ops_mask = REGULATOR_CHANGE_STATUS,

			.boot_on = 1,

		},

		.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),

		.consumer_supplies = tps65023_dcdc2_consumers,

	},

	/* dcdc3 */

	{

		.constraints = {

			.min_uV = 1200000,

			.max_uV = 1200000,

			.valid_ops_mask = REGULATOR_CHANGE_STATUS,

			.boot_on = 1,

		},

		.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),

		.consumer_supplies = tps65023_dcdc3_consumers,

	},

	/* ldo1 */

	{

		.constraints = {

			.min_uV = 1800000,

			.max_uV = 1800000,

			.valid_ops_mask = REGULATOR_CHANGE_STATUS,

			.boot_on = 1,

		},

		.num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),

		.consumer_supplies = tps65023_ldo1_consumers,

	},

	/* ldo2 */

	{

		.constraints = {

			.min_uV = 2500000,

			.max_uV = 3300000,

			.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |

					  REGULATOR_CHANGE_STATUS,

			.boot_on = 1,

		},

		.num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),

		.consumer_supplies = tps65023_ldo2_consumers,

	},

};



static struct i2c_board_info __initdata mityomap_tps65023_info[] = {

	{

		I2C_BOARD_INFO("tps65023", 0x48),

		.platform_data = &tps65023_regulator_data[0],

	},

	{

		I2C_BOARD_INFO("24c02", 0x50),

	},

};



static int __init pmic_tps65023_init(void)

{

	return i2c_register_board_info(1, mityomap_tps65023_info,

					ARRAY_SIZE(mityomap_tps65023_info));

}



/*

 * MityDSP-L138 includes a 256 MByte large-page NAND flash

 * (128K blocks).
@@ -172,6 +309,14 @@ static void __init mityomapl138_init(void) 


	davinci_serial_init(&mityomapl138_uart_config);



	ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);

	if (ret)

		pr_warning("i2c0 registration failed: %d\n", ret);



	ret = pmic_tps65023_init();

	if (ret)

		pr_warning("TPS65023 PMIC init failed: %d\n", ret);



	mityomapl138_setup_nand();



	mityomapl138_config_emac();