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stm32mp1: board: support of error led on ed1/ev1 board

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Create a function led_error_blink and add node in device
tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay
2019-07-30 19:16:39 +02:00
committed by Patrice Chotard
parent d573e46168
commit dd2810851e
2 changed files with 39 additions and 30 deletions
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21
arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi
View File

@@ -15,31 +15,22 @@
}; };
config { config {
u-boot,boot-led = "heartbeat";
u-boot,error-led = "error";
st,fastboot-gpios = <&gpioa 13 GPIO_ACTIVE_LOW>; st,fastboot-gpios = <&gpioa 13 GPIO_ACTIVE_LOW>;
st,stm32prog-gpios = <&gpioa 14 GPIO_ACTIVE_LOW>; st,stm32prog-gpios = <&gpioa 14 GPIO_ACTIVE_LOW>;
}; };
led { led {
compatible = "gpio-leds";
red { red {
label = "stm32mp:red:status"; label = "error";
gpios = <&gpioa 13 GPIO_ACTIVE_LOW>; gpios = <&gpioa 13 GPIO_ACTIVE_LOW>;
default-state = "off"; default-state = "off";
status = "okay";
}; };
green {
label = "stm32mp:green:user";
gpios = <&gpioa 14 GPIO_ACTIVE_LOW>;
default-state = "on";
};
orange {
label = "stm32mp:orange:status";
gpios = <&gpioh 7 GPIO_ACTIVE_HIGH>;
default-state = "off";
};
blue { blue {
label = "stm32mp:blue:user"; default-state = "on";
gpios = <&gpiod 11 GPIO_ACTIVE_HIGH>;
}; };
}; };
}; };

48
board/st/stm32mp1/stm32mp1.c
View File

@@ -21,6 +21,7 @@
#include <reset.h> #include <reset.h>
#include <syscon.h> #include <syscon.h>
#include <usb.h> #include <usb.h>
#include <watchdog.h>
#include <asm/io.h> #include <asm/io.h>
#include <asm/gpio.h> #include <asm/gpio.h>
#include <asm/arch/stm32.h> #include <asm/arch/stm32.h>
@@ -232,6 +233,7 @@ int g_dnl_board_usb_cable_connected(void)
} }
#endif /* CONFIG_USB_GADGET */ #endif /* CONFIG_USB_GADGET */
#ifdef CONFIG_LED
static int get_led(struct udevice **dev, char *led_string) static int get_led(struct udevice **dev, char *led_string)
{ {
char *led_name; char *led_name;
@@ -264,12 +266,41 @@ static int setup_led(enum led_state_t cmd)
ret = led_set_state(dev, cmd); ret = led_set_state(dev, cmd);
return ret; return ret;
} }
#endif
static void __maybe_unused led_error_blink(u32 nb_blink)
{
#ifdef CONFIG_LED
int ret;
struct udevice *led;
u32 i;
#endif
if (!nb_blink)
return;
#ifdef CONFIG_LED
ret = get_led(&led, "u-boot,error-led");
if (!ret) {
/* make u-boot,error-led blinking */
/* if U32_MAX and 125ms interval, for 17.02 years */
for (i = 0; i < 2 * nb_blink; i++) {
led_set_state(led, LEDST_TOGGLE);
mdelay(125);
WATCHDOG_RESET();
}
}
#endif
/* infinite: the boot process must be stopped */
if (nb_blink == U32_MAX)
hang();
}
static int board_check_usb_power(void) static int board_check_usb_power(void)
{ {
struct ofnode_phandle_args adc_args; struct ofnode_phandle_args adc_args;
struct udevice *adc; struct udevice *adc;
struct udevice *led;
ofnode node; ofnode node;
unsigned int raw; unsigned int raw;
int max_uV = 0; int max_uV = 0;
@@ -395,20 +426,7 @@ static int board_check_usb_power(void)
pr_err("****************************************************\n\n"); pr_err("****************************************************\n\n");
} }
ret = get_led(&led, "u-boot,error-led"); led_error_blink(nb_blink);
if (ret) {
/* in unattached case, the boot process must be stopped */
if (nb_blink == U32_MAX)
hang();
return ret;
}
/* make u-boot,error-led blinking */
for (i = 0; i < nb_blink * 2; i++) {
led_set_state(led, LEDST_TOGGLE);
mdelay(125);
}
led_set_state(led, LEDST_ON);
return 0; return 0;
} }