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hw/gpio/pl061: Document the interface of this device 

Add a comment documenting the "QEMU interface" of this device:
which MMIO regions, IRQ lines, GPIO lines, etc it exposes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Peter Maydell 2021-07-02 11:40:12 +01:00
parent 74d359b52d
commit 455736df2c
1 changed files with 7 additions and 0 deletions
hw/gpio
pl061.c

7
hw/gpio/pl061.c
View File

@ -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"