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-rw-r--r--src/mainboard/pcengines/apu2/gpio_ftns.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/src/mainboard/pcengines/apu2/gpio_ftns.h b/src/mainboard/pcengines/apu2/gpio_ftns.h
index 95c744f62b..638622076e 100644
--- a/src/mainboard/pcengines/apu2/gpio_ftns.h
+++ b/src/mainboard/pcengines/apu2/gpio_ftns.h
@@ -5,11 +5,12 @@
int get_spd_offset(void);
-//
-// Based on PC Engines APU2C and APU3A schematics
-// http://www.pcengines.ch/schema/apu2c.pdf
-// http://www.pcengines.ch/schema/apu3a.pdf
-//
+/*
+ * Based on PC Engines APU2C and APU3A schematics
+ * http://www.pcengines.ch/schema/apu2c.pdf
+ * http://www.pcengines.ch/schema/apu3a.pdf
+ * Beware that the GPIO pin numbers on the package don't match the internal GPIO numbers
+ */
#define GPIO_22 0x09 // MODESW (APU5)
#define GPIO_32 0x59 // MODESW (SIMSWAP2 on APU5)
#define GPIO_33 0x5A // SIMSWAP (SIMSWAP3 on APU5)