qemu-e2k/docs
Inès Varhol 1cdcfb6e93 hw/gpio: Implement STM32L4x5 GPIO
Features supported :
- the 8 STM32L4x5 GPIOs are initialized with their reset values
    (except IDR, see below)
- input mode : setting a pin in input mode "externally" (using input
    irqs) results in an out irq (transmitted to SYSCFG)
- output mode : setting a bit in ODR sets the corresponding out irq
    (if this line is configured in output mode)
- pull-up, pull-down
- push-pull, open-drain

Difference with the real GPIOs :
- Alternate Function and Analog mode aren't implemented :
    pins in AF/Analog behave like pins in input mode
- floating pins stay at their last value
- register IDR reset values differ from the real one :
    values are coherent with the other registers reset values
    and the fact that AF/Analog modes aren't implemented
- setting I/O output speed isn't supported
- locking port bits isn't supported
- ADC function isn't supported
- GPIOH has 16 pins instead of 2 pins
- writing to registers LCKR, AFRL, AFRH and ASCR is ineffective

Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr>
Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20240305210444.310665-2-ines.varhol@telecom-paris.fr
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-03-07 12:19:25 +00:00
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system hw/gpio: Implement STM32L4x5 GPIO 2024-03-07 12:19:25 +00:00
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block-replication.txt
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defs.rst.inc
igd-assign.txt
image-fuzzer.txt
index.rst
memory-hotplug.txt
meson.build
multi-thread-compression.txt
multiseat.txt
nvdimm.txt
pci_expander_bridge.txt
pcie_pci_bridge.txt
pcie_sriov.txt
pcie.txt
pvrdma.txt
qcow2-cache.txt
qdev-device-use.txt
qemu-option-trace.rst.inc
qemupciserial.inf
rdma.txt
requirements.txt readthodocs: fully specify a build environment 2024-01-12 13:23:48 +00:00
spice-port-fqdn.txt
throttle.txt
xbzrle.txt
xen-save-devices-state.txt