From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikita Kiryanov Date: Sun, 3 Aug 2014 10:34:46 +0300 Subject: [U-Boot] [PATCH 16/18] arm: mx6: cm_fx6: add i2c support In-Reply-To: <1407051288-17324-1-git-send-email-nikita@compulab.co.il> References: <1407051288-17324-1-git-send-email-nikita@compulab.co.il> Message-ID: <1407051288-17324-17-git-send-email-nikita@compulab.co.il> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Add support for all 3 I2C busses on Compulab CM-FX6 CoM. Cc: Igor Grinberg Cc: Stefano Babic Cc: Tom Rini Signed-off-by: Nikita Kiryanov --- board/compulab/cm_fx6/cm_fx6.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/configs/cm_fx6.h | 11 +++++++++++ 2 files changed, 53 insertions(+) diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index f8b3ad8..194b2ed 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -15,12 +15,53 @@ #include #include #include +#include #include #include #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 | \ @@ -245,6 +286,7 @@ int board_init(void) { gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; cm_fx6_setup_gpmi_nand(); + cm_fx6_setup_i2c(); return 0; } diff --git a/include/configs/cm_fx6.h b/include/configs/cm_fx6.h index 7ad2eb9..fd0210e 100644 --- a/include/configs/cm_fx6.h +++ b/include/configs/cm_fx6.h @@ -214,6 +214,17 @@ #define CONFIG_USB_MAX_CONTROLLER_COUNT 2 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET /* For OTG port */ +/* I2C */ +#define CONFIG_CMD_I2C +#define CONFIG_SYS_I2C +#define CONFIG_SYS_I2C_MXC +#define CONFIG_SYS_I2C_SPEED 100000 +#define CONFIG_SYS_MXC_I2C3_SPEED 400000 + +#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50 +#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1 +#define CONFIG_SYS_I2C_EEPROM_BUS 2 + /* GPIO */ #define CONFIG_MXC_GPIO -- 1.9.1