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[v5,11/11] PCI: rockchip: Set address alignment for endpoint mode

Message ID 20230418074700.1083505-12-rick.wertenbroek@gmail.com (mailing list archive)
State New, archived
Headers show
Series PCI: rockchip: Fix RK3399 PCIe endpoint controller driver | expand

Commit Message

Rick Wertenbroek April 18, 2023, 7:46 a.m. UTC 
From: Damien Le Moal <dlemoal@kernel.org>

The address translation unit of the rockchip EP controller does not use
the lower 8 bits of a PCIe-space address to map local memory. Thus we
must set the align feature field to 256 to let the user know about this
constraint.

Fixes: cf590b078391 ("PCI: rockchip: Add EP driver for Rockchip PCIe controller")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
---
 drivers/pci/controller/pcie-rockchip-ep.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index edfced311a9f..0af0e965fb57 100644
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -442,6 +442,7 @@  static const struct pci_epc_features rockchip_pcie_epc_features = {
 	.linkup_notifier = false,
 	.msi_capable = true,
 	.msix_capable = false,
+	.align = 256,
 };
 
 static const struct pci_epc_features*