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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2016-06-15 10:08:27 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2016-06-15 12:33:11 +0200 |
| commit | c4ed681bc383b82fd407665ff1c4a4e2d4b8c1f5 (patch) | |
| tree | 71e3e753963829b1a54d09b7550c889e4960a692 /board | |
| parent | 3dfec13fd1ca473eb078e23b98d5267c12659f7b (diff) | |
| download | u-boot-c4ed681bc383b82fd407665ff1c4a4e2d4b8c1f5.tar.gz u-boot-c4ed681bc383b82fd407665ff1c4a4e2d4b8c1f5.tar.bz2 u-boot-c4ed681bc383b82fd407665ff1c4a4e2d4b8c1f5.zip | |
TPL: TM2: set MAX77843 MUIC to USB path before entering download mode
Use simple soft i2c gpio bit-bang based controller to enable MUIC register
write.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: I4087fe304d49bd4b88657e6bb4f0bd438e92d6d3
Diffstat (limited to 'board')
| -rw-r--r-- | board/samsung/tm2/tm2.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/board/samsung/tm2/tm2.c b/board/samsung/tm2/tm2.c index a355fe33f0..8313ea8aee 100644 --- a/board/samsung/tm2/tm2.c +++ b/board/samsung/tm2/tm2.c @@ -15,6 +15,7 @@ #include <asm/arch/cpu.h> #include <asm/arch/power.h> #include <samsung-usb-phy-uboot.h> +#include <asm/gpio.h> DECLARE_GLOBAL_DATA_PTR; @@ -102,6 +103,23 @@ int board_mmc_init(bd_t *bis) } #endif +#ifdef CONFIG_SYS_I2C_INIT_BOARD +void i2c_init_board(void) +{ + /* Soft I2C - hsi2c_8 */ + + gpio_request(GPIO_I2C_SDA_PIN, "hsi2c_8_data"); + gpio_request(GPIO_I2C_SCL_PIN, "hsi2c_8_clk"); + gpio_direction_output(GPIO_I2C_SDA_PIN, 1); + gpio_direction_output(GPIO_I2C_SCL_PIN, 1); + + gpio_set_pull(GPIO_I2C_SCL_PIN, S5P_GPIO_PULL_UP); + gpio_set_pull(GPIO_I2C_SDA_PIN, S5P_GPIO_PULL_UP); + + gpio_set_drv(GPIO_I2C_SCL_PIN, S5P_GPIO_DRV_1X); + gpio_set_drv(GPIO_I2C_SDA_PIN, S5P_GPIO_DRV_1X); +} +#endif #ifdef CONFIG_USB_DWC3 static struct dwc3_device dwc3_device_data = { .maximum_speed = USB_SPEED_SUPER, |