diff options
| author | Eric Benard <eric@eukrea.com> | 2010-01-15 11:50:19 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-01-16 12:32:34 +0100 |
| commit | bc31ee222caf142cb6828909606e6def0a213b40 (patch) | |
| tree | 3205bc6339433d4e8d4bd3999456d22b1e977a70 /board | |
| parent | f8dc81ba5a291f6649f3e5f759086f4af98e159e (diff) | |
| download | barebox-bc31ee222caf142cb6828909606e6def0a213b40.tar.gz barebox-bc31ee222caf142cb6828909606e6def0a213b40.tar.xz | |
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>
Diffstat (limited to 'board')
| -rw-r--r-- | board/eukrea_cpuimx27/eukrea_cpuimx27.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/board/eukrea_cpuimx27/eukrea_cpuimx27.c b/board/eukrea_cpuimx27/eukrea_cpuimx27.c index 629399f993..0908dca7c8 100644 --- a/board/eukrea_cpuimx27/eukrea_cpuimx27.c +++ b/board/eukrea_cpuimx27/eukrea_cpuimx27.c @@ -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; } |