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-rw-r--r--hw/gpio/pl061.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/gpio/pl061.c b/hw/gpio/pl061.c
index 42f6e6c..a3c1386 100644
--- a/hw/gpio/pl061.c
+++ b/hw/gpio/pl061.c
@@ -6,6 +6,13 @@
* Written by Paul Brook
*
* This code is licensed under the GPL.
+ *
+ * QEMU interface:
+ * + sysbus MMIO region 0: the device registers
+ * + sysbus IRQ: the GPIOINTR interrupt line
+ * + unnamed GPIO inputs 0..7: inputs to connect to the emulated GPIO lines
+ * + unnamed GPIO outputs 0..7: the emulated GPIO lines, considered as
+ * outputs
*/
#include "qemu/osdep.h"