Sabre-6Quad: Add LED GPIO/IOMUX definitions

configs/sabre-6quad/README.txt

@@ -142,7 +142,9 @@ LEDs and Buttons
 
 LEDs
 ----
-A single LED is available driven by USR_DEF_RED_LED.
+A single LED is available driven GPIO1_IO02.  On the schematic this is
+USR_DEF_RED_LED signal to pin T1 (GPIO_2).  This signal is shared with
+KEY_ROW6 (ALT2).  A low value illuminates the LED.
 
 This LED is not used by the board port unless CONFIG_ARCH_LEDS is
 defined.  In that case, the usage by the board port is defined in

configs/sabre-6quad/include/board.h

@@ -50,17 +50,19 @@
 /* LED definitions ******************************************************************/
 /* LEDs
  *
- * A single LED is available driven by USR_DEF_RED_LED.
+ * A single LED is available driven GPIO1_IO02.  On the schematic this is
+ * USR_DEF_RED_LED signal to pin T1 (GPIO_2).  This signal is shared with KEY_ROW6
+ * (ALT2).  A low value illuminates the LED.
  */
 
 /* LED index values for use with board_userled() */
 
-#define BOARD_LED0          0
+#define BOARD_LED           0
 #define BOARD_NLEDS         1
 
 /* LED bits for use with board_userled_all() */
 
-#define BOARD_LED0_BIT      (1 << BOARD_LED0)
+#define BOARD_LED_BIT       (1 << BOARD_LED)
 
 /* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
  * defined.  In that case, the usage by the board port is defined in

configs/sabre-6quad/src/imx_autoleds.c

@@ -106,7 +106,7 @@ void board_autoled_initialize(void)
 {
   /* Configure LED PIOs for output */
 
-  imx_config_gpio(GPIO_LED0);
+  imx_config_gpio(GPIO_LED);
 }
 
 /****************************************************************************
@@ -117,7 +117,7 @@ void board_autoled_on(int led)
 {
   if (led == 1 || led == 3)
     {
-      imx_gpio_write(GPIO_LED0, false); /* Low illuminates */
+      imx_gpio_write(GPIO_LED, false); /* Low illuminates */
     }
 }
 
@@ -129,7 +129,7 @@ void board_autoled_off(int led)
 {
   if (led == 3)
     {
-      imx_gpio_write(GPIO_LED0, true);  /* High extinguishes */
+      imx_gpio_write(GPIO_LED, true);  /* High extinguishes */
     }
 }
 

configs/sabre-6quad/src/imx_userleds.c

@@ -59,7 +59,7 @@ void board_userled_initialize(void)
 {
   /* Configure LED PIOs for output */
 
-  imx_config_gpio(GPIO_LED0);
+  imx_config_gpio(GPIO_LED);
 }
 
 /****************************************************************************
@@ -68,9 +68,9 @@ void board_userled_initialize(void)
 
 void board_userled(int led, bool ledon)
 {
-  if (led == BOARD_LED0)
+  if (led == BOARD_LED)
     {
-      imx_gpio_write(GPIO_LED0, !ledon); /* Low illuminates */
+      imx_gpio_write(GPIO_LED, !ledon); /* Low illuminates */
     }
 }
 
@@ -82,5 +82,5 @@ void board_userled_all(uint8_t ledset)
 {
   /* Low illuminates */
 
-  imx_gpio_write(GPIO_LED0, (ledset & BOARD_LED0_BIT) == 0));
+  imx_gpio_write(GPIO_LED, (ledset & BOARD_LED_BIT) == 0));
 }

configs/sabre-6quad/src/sabre-6quad.h

@@ -44,14 +44,26 @@
 
 #include <stdint.h>
 
+#include "imx_gpio.h"
+#include "imx_iomuxc.h"
+
 /************************************************************************************
  * Pre-processor Definitions
  ************************************************************************************/
 /* Configuration ********************************************************************/
 
 /* SABRE-6QUAD GPIO Pin Definitions *************************************************/
+/* LED
+ *
+ * A single LED is available driven GPIO1_IO02.  On the schematic this is
+ * USR_DEF_RED_LED signal to pin T1 (GPIO_2).  This signal is shared with KEY_ROW6
+ * (ALT2).  A low value illuminates the LED.
+ */
 
-#define GPIO_LED0 0 /* To be provided */
+#define IOMUX_LED  (IOMUX_PULL_NONE | IOMUX_CMOS_OUTPUT | IOMUX_DRIVE_40OHM | \
+                    IOMUX_SPEED_MEDIUM | IOMUX_SLEW_SLOW)
+#define GPIO_LED   (GPIO_OUTPUT | GPIO_OUTPUT_ONE | GPIO_PORT1 | GPIO_PIN2 | \
+                    IOMUX_LED)
 
 /************************************************************************************
  * Public Types