diff options
| author | Vikas Manocha | 2017-04-10 15:03:00 -0700 |
|---|---|---|
| committer | Tom Rini | 2017-05-08 11:57:21 -0400 |
| commit | 2f80a9f72ecf4cfee68279a45e3c155f6516faa1 (patch) | |
| tree | 20decea52c6dcf8052e6eb8a48cb1596d93f4615 | |
| parent | 280057bd7dd623420b2d8b383fe5bbe26820bc93 (diff) | |
stm32f746: to switch on user LED1 & read user button
All discovery boards have one user button & one user LED. Here we are
just reading the button status & switching ON the user LED.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
cc: Christophe KERELLO <christophe.kerello@st.com>
| -rw-r--r-- | arch/arm/dts/stm32f746-disco.dts | 10 | ||||
| -rw-r--r-- | board/st/stm32f746-disco/stm32f746-disco.c | 37 | ||||
| -rw-r--r-- | include/configs/stm32f746-disco.h | 1 |
3 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts index f830aa90efd..8e4576bdc1f 100644 --- a/arch/arm/dts/stm32f746-disco.dts +++ b/arch/arm/dts/stm32f746-disco.dts @@ -78,6 +78,16 @@ gpio9 = &gpioj; gpio10 = &gpiok; }; + + led1 { + compatible = "st,led1"; + led-gpio = <&gpioi 1 0>; + }; + + button1 { + compatible = "st,button1"; + button-gpio = <&gpioi 11 0>; + }; }; &clk_hse { diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c index 45a2c47aa28..52c1900ee34 100644 --- a/board/st/stm32f746-disco/stm32f746-disco.c +++ b/board/st/stm32f746-disco/stm32f746-disco.c @@ -17,6 +17,7 @@ #include <asm/arch/stm32_periph.h> #include <asm/arch/stm32_defs.h> #include <asm/arch/syscfg.h> +#include <asm/gpio.h> DECLARE_GLOBAL_DATA_PTR; @@ -72,6 +73,42 @@ u32 get_board_rev(void) return 0; } +int board_late_init(void) +{ + struct gpio_desc gpio = {}; + int node; + + node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1"); + if (node < 0) + return -1; + + gpio_request_by_name_nodev(gd->fdt_blob, node, "led-gpio", 0, &gpio, + GPIOD_IS_OUT); + + if (dm_gpio_is_valid(&gpio)) { + dm_gpio_set_value(&gpio, 0); + mdelay(10); + dm_gpio_set_value(&gpio, 1); + } + + /* read button 1*/ + node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1"); + if (node < 0) + return -1; + + gpio_request_by_name_nodev(gd->fdt_blob, node, "button-gpio", 0, &gpio, + GPIOD_IS_IN); + + if (dm_gpio_is_valid(&gpio)) { + if (dm_gpio_get_value(&gpio)) + puts("usr button is at HIGH LEVEL\n"); + else + puts("usr button is at LOW LEVEL\n"); + } + + return 0; +} + int board_init(void) { gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; diff --git a/include/configs/stm32f746-disco.h b/include/configs/stm32f746-disco.h index e917ba9162f..48ac4413e02 100644 --- a/include/configs/stm32f746-disco.h +++ b/include/configs/stm32f746-disco.h @@ -75,4 +75,5 @@ #define CONFIG_CMD_MEM #define CONFIG_CMD_CACHE +#define CONFIG_BOARD_LATE_INIT #endif /* __CONFIG_H */ |