PCI: rockchip: Fix legacy IRQ generation for RK3399 PCIe endpoint core

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commit 166e89d99d upstream.

Fix legacy IRQ generation for RK3399 PCIe endpoint core according to
the technical reference manual (TRM). Assert and deassert legacy
interrupt (INTx) through the legacy interrupt control register
("PCIE_CLIENT_LEGACY_INT_CTRL") instead of manually generating a PCIe
message. The generation of the legacy interrupt was tested and validated
with the PCIe endpoint test driver.

Link: https://lore.kernel.org/r/20230418074700.1083505-8-rick.wertenbroek@gmail.com
Fixes: cf590b0783 ("PCI: rockchip: Add EP driver for Rockchip PCIe controller")
Tested-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Rick Wertenbroek 2023-04-18 09:46:54 +02:00 • committed by Greg Kroah-Hartman

parent dfd20ebcae

commit 1a48294ade

2 changed files with 16 additions and 35 deletions

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45

drivers/pci/controller/pcie-rockchip-ep.c

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6

drivers/pci/controller/pcie-rockchip.h

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