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ARM: mxs/mx28evk: add leds-gpio device for heartbeat 

It adds LED2 on mx28evk board as heartbeat trigger for diagnostic
purpose.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Shawn Guo 2011-05-31 17:07:03 +08:00 committed by Sascha Hauer
parent 95b7445946
commit 53b8ff9d37
2 changed files with 22 additions and 0 deletions
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1
arch/arm/mach-mxs/Kconfig
View File

@ -41,6 +41,7 @@ config MACH_MX23EVK
config MACH_MX28EVK
bool "Support MX28EVK Platform"
select SOC_IMX28
select LEDS_GPIO_REGISTER
select MXS_HAVE_AMBA_DUART
select MXS_HAVE_PLATFORM_AUART
select MXS_HAVE_PLATFORM_FEC

21
arch/arm/mach-mxs/mach-mx28evk.c
View File

@ -15,6 +15,7 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/irq.h>
#include <linux/clk.h>
@ -29,6 +30,7 @@
#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
#define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15)
#define MX28EVK_GPIO_LED MXS_GPIO_NR(3, 5)
#define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18)
#define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30)
#define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
@ -178,6 +180,23 @@ static const iomux_cfg_t mx28evk_pads[] __initconst = {
/* slot power enable */
MX28_PAD_PWM4__GPIO_3_29 |
(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
/* led */
MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL,
};
/* led */
static const struct gpio_led mx28evk_leds[] __initconst = {
{
.name = "GPIO-LED",
.default_trigger = "heartbeat",
.gpio = MX28EVK_GPIO_LED,
},
};
static const struct gpio_led_platform_data mx28evk_led_data __initconst = {
.leds = mx28evk_leds,
.num_leds = ARRAY_SIZE(mx28evk_leds),
};
/* fec */
@ -385,6 +404,8 @@ static void __init mx28evk_init(void)
if (ret)
pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
gpio_led_register_device(0, &mx28evk_led_data);
}
static void __init mx28evk_timer_init(void)