Commits
Kishon Vijay Abraham I committed 1bfc56c39ef
PCI: keystone: Add PCI legacy interrupt support for AM654 Add PCI legacy interrupt support for AM654. AM654 has a single HW interrupt line for all the four legacy interrupts INTA/INTB/INTC/INTD. The HW interrupt line connected to GIC is a pulse interrupt whereas the legacy interrupts by definition is level interrupt. In order to provide level interrupt functionality to edge interrupt line, PCIe in AM654 has provided IRQ_EOI register. When the SW writes to IRQ_EOI register after handling the interrupt, the IP checks the state of legacy interrupt and re-triggers pulse interrupt invoking the handler again. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>