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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: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Michael Williamson 2010-09-05 13:29:39 -04:00 committed by Kevin Hilman
parent b41547c153
commit 8774882394
1 changed files with 145 additions and 0 deletions
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145
arch/arm/mach-davinci/board-mityomapl138.c
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@ -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();