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authorRenato Frias <b13784@freescale.com>2013-05-13 18:01:12 +0000
committerStefano Babic <sbabic@denx.de>2013-06-03 13:19:11 +0200
commit195781657cccdda947555668aca5854af84f5fdf (patch)
tree79bc65ff7450716eb87ac280a4a9a7aa446f48c3 /board/freescale/mx6qsabreauto
parentaf0a37ff18b1ebb00c531059f3c04224c0913fb8 (diff)
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mx6qsabreauto: Add i2c to mx6qsabreauto board
Add i2c2 and 3 to mx6qsabreauto board, i2c3 is multiplexed use gpio to set steering. Signed-off-by: Renato Frias <b13784@freescale.com> Reviewed-by: Otavio Salvador <otavio@ossystems.com.br> Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'board/freescale/mx6qsabreauto')
-rw-r--r--board/freescale/mx6qsabreauto/mx6qsabreauto.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
index bfe4868..24aa20a 100644
--- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
+++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
@@ -26,12 +26,14 @@
#include <asm/errno.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
#include <asm/imx-common/boot_mode.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/arch/sys_proto.h>
+#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -46,6 +48,12 @@ DECLARE_GLOBAL_DATA_PTR;
#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
+#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
+ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
+ PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -76,6 +84,41 @@ iomux_v3_cfg_t const enet_pads[] = {
MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
};
+/* I2C2 PMIC, iPod, Tuner, Codec, Touch, HDMI EDID, MIPI CSI2 card */
+struct i2c_pads_info i2c_pad_info1 = {
+ .scl = {
+ .i2c_mode = MX6_PAD_EIM_EB2__I2C2_SCL | PC,
+ .gpio_mode = MX6_PAD_EIM_EB2__GPIO_2_30 | PC,
+ .gp = IMX_GPIO_NR(2, 30)
+ },
+ .sda = {
+ .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
+ .gpio_mode = MX6_PAD_KEY_ROW3__GPIO_4_13 | PC,
+ .gp = IMX_GPIO_NR(4, 13)
+ }
+};
+
+/*
+ * I2C3 MLB, Port Expanders (A, B, C), Video ADC, Light Sensor,
+ * Compass Sensor, Accelerometer, Res Touch
+ */
+struct i2c_pads_info i2c_pad_info2 = {
+ .scl = {
+ .i2c_mode = MX6_PAD_GPIO_3__I2C3_SCL | PC,
+ .gpio_mode = MX6_PAD_GPIO_3__GPIO_1_3 | PC,
+ .gp = IMX_GPIO_NR(1, 3)
+ },
+ .sda = {
+ .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC,
+ .gpio_mode = MX6_PAD_EIM_D18__GPIO_3_18 | PC,
+ .gp = IMX_GPIO_NR(3, 18)
+ }
+};
+
+iomux_v3_cfg_t const i2c3_pads[] = {
+ MX6_PAD_EIM_A24__GPIO_5_4 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
static void setup_iomux_enet(void)
{
imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
@@ -216,6 +259,13 @@ int board_init(void)
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+ /* I2C 2 and 3 setup - I2C 3 hw mux with EIM */
+ setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+ /* I2C 3 Steer */
+ gpio_direction_output(IMX_GPIO_NR(5, 4), 1);
+ imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
+ setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
+
return 0;
}