diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2015-05-13 20:48:09 +0200 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2015-05-13 20:48:09 +0200 |
| commit | 0de8d62ff5cb24d72206d9bee5ad42d517ee530e (patch) | |
| tree | 3f82a922625c74cca75ccb4a4da8cbd5c8ba7895 /board | |
| parent | 3b1dcb176c2e211d00ba0cf9386f1f0b07a33729 (diff) | |
apalis_imx6.c: prepare Apalis GPIO pins to be GPIO
In order to use the gpio commandline feature of U-Boot the pins
one wants to control must be muxed to GPIO.
Do that for Apalis pins GPIO[1:8] and for WAKE1_MICO.
This feature can be used as follows:
e.g. set GPIO1 to 1:
Apalis iMX6 # gpio set 36
gpio: pin 36 (gpio 36) value is 1
e.g. read the state of GPIO8:
Apalis iMX6 # gpio input 6
gpio: pin 6 (gpio 6) value is 1
Diffstat (limited to 'board')
| -rw-r--r-- | board/toradex/apalis_imx6/apalis_imx6.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/board/toradex/apalis_imx6/apalis_imx6.c b/board/toradex/apalis_imx6/apalis_imx6.c index 154e858d43..41ffdd4f5f 100644 --- a/board/toradex/apalis_imx6/apalis_imx6.c +++ b/board/toradex/apalis_imx6/apalis_imx6.c @@ -63,6 +63,10 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ PAD_CTL_SRE_SLOW) +#define NO_PULLUP ( \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ + PAD_CTL_SRE_SLOW) + #define WEAK_PULLDOWN (PAD_CTL_PUS_100K_DOWN | \ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ PAD_CTL_HYS | PAD_CTL_SRE_SLOW) @@ -259,6 +263,24 @@ static int reset_enet_phy (struct mii_dev *bus) return 0; } +/* mux the Apalis GPIO pins to gpio, so they can be used from the U-Boot commandline */ +iomux_v3_cfg_t const gpio_pads[] = { + MX6_PAD_NANDF_D4__GPIO2_IO04 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO1 */ + MX6_PAD_NANDF_D5__GPIO2_IO05 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO2 */ + MX6_PAD_NANDF_D6__GPIO2_IO06 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO3 */ + MX6_PAD_NANDF_D7__GPIO2_IO07 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO4 */ + MX6_PAD_NANDF_RB0__GPIO6_IO10 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO5 */ + MX6_PAD_NANDF_WP_B__GPIO6_IO09 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO6 */ + MX6_PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(WEAK_PULLDOWN), /* Apalis GPIO7 */ + MX6_PAD_GPIO_6__GPIO1_IO06 | MUX_PAD_CTRL(WEAK_PULLUP), /* Apalis GPIO8 */ + MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(WEAK_PULLUP), /* Power Button */ +}; + +static void setup_iomux_gpio(void) +{ + imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads)); +} + iomux_v3_cfg_t const usb_pads[] = { /* TODO This pin has a dedicated USB power functionality, can we use it? */ /* USBH_EN */ @@ -804,6 +826,8 @@ int board_init(void) setup_sata(); #endif + setup_iomux_gpio(); + return 0; } |