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Eukrea CPUIMX27 : add I2C and LP3972 support 

This allows to properly setup the voltage on LCD pins at boot.

Signed-off-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Eric Benard 2010-01-15 11:50:19 +01:00 committed by Sascha Hauer
parent f8dc81ba5a
commit bc31ee222c
1 changed files with 29 additions and 0 deletions
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29
board/eukrea_cpuimx27/eukrea_cpuimx27.c
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@ -21,6 +21,7 @@
*/
#include <common.h>
#include <errno.h>
#include <net.h>
#include <cfi_flash.h>
#include <init.h>
@ -42,6 +43,8 @@
#include <mach/imx-pll.h>
#include <ns16550.h>
#include <asm/mmu.h>
#include <i2c/i2c.h>
#include <i2c/lp3972.h>
static struct device_d cfi_dev = {
.name = "cfi_flash",
@ -140,6 +143,17 @@ static struct device_d quad_uart_serial_device = {
};
#endif
static struct i2c_board_info i2c_devices[] = {
{
I2C_BOARD_INFO("lp3972", 0x34),
},
};
static struct device_d i2c_dev = {
.name = "i2c-imx",
.map_base = IMX_I2C1_BASE,
};
#ifdef CONFIG_MMU
static void eukrea_cpuimx27_mmu_init(void)
{
@ -187,6 +201,8 @@ static int eukrea_cpuimx27_devices_init(void)
PD15_AOUT_FEC_COL,
PD16_AIN_FEC_TX_ER,
PF23_AIN_FEC_TX_EN,
PD17_PF_I2C_DATA,
PD18_PF_I2C_CLK,
#ifdef CONFIG_DRIVER_SERIAL_IMX
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
@ -213,6 +229,10 @@ static int eukrea_cpuimx27_devices_init(void)
register_device(&nand_dev);
register_device(&sdram_dev);
PCCR0 |= PCCR0_I2C1_EN;
i2c_register_board_info(0, i2c_devices, ARRAY_SIZE(i2c_devices));
register_device(&i2c_dev);
devfs_add_partition("nor0", 0x00000, 0x40000, PARTITION_FIXED, "self0");
devfs_add_partition("nor0", 0x40000, 0x20000, PARTITION_FIXED, "env0");
protect_file("/dev/env0", 1);
@ -257,9 +277,18 @@ console_initcall(eukrea_cpuimx27_console_init);
static int eukrea_cpuimx27_late_init(void)
{
struct i2c_client *client;
u8 reg[1];
console_flush();
register_device(&fec_dev);
client = lp3972_get_client();
if (!client)
return -ENODEV;
reg[0] = 0xa0;
i2c_write_reg(client, 0x39, reg, sizeof(reg));
return 0;
}