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board: sam9x60-curiosity: Let LED subsystem init leds if enabled

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If CONFIG_LED and CONFIG_LED_GPIO are enabled, it is not necessary to
initialize the RGB LED on the board by manually setting hardcoded GPIOs
anymore.  Everything is well defined in dts and can be used like on
boards of other vendors.

Keep the old behaviour as fallback, though.

With all this in place enabling CONFIG_CMD_LED gives us a working 'led'
command on the U-Boot shell.

Signed-off-by: Alexander Dahl <ada@thorsis.com>
This commit is contained in:
Alexander Dahl 2023-08-23 15:58:55 +02:00 committed by Eugen Hristev
parent 72d5e3c140
commit 1818b44b7b
2 changed files with 36 additions and 0 deletions
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18
arch/arm/dts/at91-sam9x60_curiosity-u-boot.dtsi
View file

@ -20,6 +20,24 @@
chosen {
bootph-all;
};
config {
u-boot,boot-led = "blue";
};
leds {
led-red {
default-state = "off";
};
led-green {
default-state = "off";
};
led-blue {
default-state = "off";
};
};
};
&clk32 {

18
board/atmel/sam9x60_curiosity/sam9x60_curiosity.c
View file

@ -9,6 +9,7 @@
#include <debug_uart.h>
#include <fdtdec.h>
#include <init.h>
#include <led.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/at91_sfr.h>
@ -18,6 +19,7 @@
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <dm/ofnode.h>
extern void at91_pda_detect(void);
@ -27,9 +29,25 @@ void at91_prepare_cpu_var(void);
static void board_leds_init(void)
{
#if CONFIG_IS_ENABLED(LED)
const char *led_name;
struct udevice *dev;
int ret;
led_name = ofnode_conf_read_str("u-boot,boot-led");
if (!led_name)
return;
ret = led_get_by_label(led_name, &dev);
if (ret)
return;
led_set_state(dev, LEDST_ON);
#else
at91_set_pio_output(AT91_PIO_PORTD, 17, 0); /* LED RED */
at91_set_pio_output(AT91_PIO_PORTD, 19, 0); /* LED GREEN */
at91_set_pio_output(AT91_PIO_PORTD, 21, 1); /* LED BLUE */
#endif
}
int board_late_init(void)