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| author | Peter Maydell <peter.maydell@linaro.org> | 2021-07-02 11:40:12 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-07-09 16:09:12 +0100 |
| commit | 455736df2cfd3a980782986d597132776d630823 (patch) | |
| tree | 7208c424683519bdb1062cb386d53fd4efb91db5 | |
| parent | 74d359b52db760f8818476f4fbaab0ffab76a8ef (diff) | |
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>
| -rw-r--r-- | hw/gpio/pl061.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/gpio/pl061.c b/hw/gpio/pl061.c index 42f6e6c489..a3c1386221 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" |