PCI: imx6: Add IMX8MM_EP and IMX8MP_EP fixed 256-byte BAR 4 in epc_features

[ Upstream commit 399444a87acdea5d21c218bc8e9b621fea1cd218 ]

For IMX8MM_EP and IMX8MP_EP, add fixed 256-byte BAR 4 and reserved BAR 5
in imx8m_pcie_epc_features.

Fixes: 75c2f26da03f ("PCI: imx6: Add i.MX PCIe EP mode support")
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
[bhelgaas: add details in subject]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250708091003.2582846-3-hongxing.zhu@nxp.com
[ Adapted BAR configuration to use reserved_bar bitmap and bar_fixed_size ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 2bcc86ee14f405bd5bc57278fc71e7b7044bb5a2..23b8dda70cb2f012f7a6bf0cc17eefc0d5d387a0 100644 (file)
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1043,7 +1043,10 @@ static const struct pci_epc_features imx8m_pcie_epc_features = {
        .linkup_notifier = false,
        .msi_capable = true,
        .msix_capable = false,
-       .reserved_bar = 1 << BAR_1 | 1 << BAR_3,
+       .reserved_bar = 1 << BAR_1 | 1 << BAR_3 | 1 << BAR_5,
+       .bar_fixed_size = {
+               [BAR_4] = SZ_256,
+       },
        .align = SZ_64K,
 };