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| author | Nikita Kiryanov <nikita@compulab.co.il> | 2014-08-20 15:09:04 +0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2014-09-09 15:37:08 +0200 |
| commit | f42b2f606161d0051c14ccaccdc7fdef4bb2fc96 (patch) | |
| tree | 878d2eb218fc777a63645f20fff4f004aad041ca /board/compulab/cm_fx6 | |
| parent | 0f3effb99fdabf41e6152e5aec2e5fceee7616f9 (diff) | |
| download | u-boot-f42b2f606161d0051c14ccaccdc7fdef4bb2fc96.tar.gz u-boot-f42b2f606161d0051c14ccaccdc7fdef4bb2fc96.tar.bz2 u-boot-f42b2f606161d0051c14ccaccdc7fdef4bb2fc96.zip | |
arm: mx6: cm_fx6: add i2c support
Add support for all 3 I2C busses on Compulab CM-FX6 CoM.
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tom Rini <trini@ti.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Diffstat (limited to 'board/compulab/cm_fx6')
| -rw-r--r-- | board/compulab/cm_fx6/cm_fx6.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index 26f04171ee..d21c561e66 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -16,12 +16,53 @@ #include <asm/arch/crm_regs.h> #include <asm/arch/sys_proto.h> #include <asm/arch/iomux.h> +#include <asm/imx-common/mxc_i2c.h> #include <asm/io.h> #include <asm/gpio.h> #include "common.h" DECLARE_GLOBAL_DATA_PTR; +#ifdef CONFIG_SYS_I2C_MXC +#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) + +I2C_PADS(i2c0_pads, + PAD_EIM_D21__I2C1_SCL | MUX_PAD_CTRL(I2C_PAD_CTRL), + PAD_EIM_D21__GPIO3_IO21 | MUX_PAD_CTRL(I2C_PAD_CTRL), + IMX_GPIO_NR(3, 21), + PAD_EIM_D28__I2C1_SDA | MUX_PAD_CTRL(I2C_PAD_CTRL), + PAD_EIM_D28__GPIO3_IO28 | MUX_PAD_CTRL(I2C_PAD_CTRL), + IMX_GPIO_NR(3, 28)); + +I2C_PADS(i2c1_pads, + PAD_KEY_COL3__I2C2_SCL | MUX_PAD_CTRL(I2C_PAD_CTRL), + PAD_KEY_COL3__GPIO4_IO12 | MUX_PAD_CTRL(I2C_PAD_CTRL), + IMX_GPIO_NR(4, 12), + PAD_KEY_ROW3__I2C2_SDA | MUX_PAD_CTRL(I2C_PAD_CTRL), + PAD_KEY_ROW3__GPIO4_IO13 | MUX_PAD_CTRL(I2C_PAD_CTRL), + IMX_GPIO_NR(4, 13)); + +I2C_PADS(i2c2_pads, + PAD_GPIO_3__I2C3_SCL | MUX_PAD_CTRL(I2C_PAD_CTRL), + PAD_GPIO_3__GPIO1_IO03 | MUX_PAD_CTRL(I2C_PAD_CTRL), + IMX_GPIO_NR(1, 3), + PAD_GPIO_6__I2C3_SDA | MUX_PAD_CTRL(I2C_PAD_CTRL), + PAD_GPIO_6__GPIO1_IO06 | MUX_PAD_CTRL(I2C_PAD_CTRL), + IMX_GPIO_NR(1, 6)); + + +static void cm_fx6_setup_i2c(void) +{ + setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c0_pads)); + setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c1_pads)); + setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c2_pads)); +} +#else +static void cm_fx6_setup_i2c(void) { } +#endif + #ifdef CONFIG_USB_EHCI_MX6 #define WEAK_PULLDOWN (PAD_CTL_PUS_100K_DOWN | \ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ @@ -259,6 +300,7 @@ int board_init(void) { gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; cm_fx6_setup_gpmi_nand(); + cm_fx6_setup_i2c(); return 0; } |