From: Niklas Cassel Date: Fri, 31 Jan 2025 18:29:54 +0000 (+0100) Subject: PCI: keystone: Describe Resizable BARs as Resizable BARs X-Git-Tag: v6.15-rc1~119^2~19^2~5 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a6b66f7e607e8f6e5b48e246093ed911c8b31be;p=thirdparty%2Fkernel%2Fstable.git PCI: keystone: Describe Resizable BARs as Resizable BARs Looking at section "12.2.2.4.15 PCIe Subsystem BAR Configuration" in the following Technical Reference Manual (TRM) for AM65x: https://www.ti.com/lit/ug/spruid7e/spruid7e.pdf We can see that BAR2 and BAR5 are not Fixed BARs, but actually Resizable BARs. Now when we actually have support for Resizable BARs, let's configure these BARs as such. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Niklas Cassel Link: https://lore.kernel.org/r/20250131182949.465530-14-cassel@kernel.org Signed-off-by: Manivannan Sadhasivam [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński --- diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 63bd5003da458..fdc610ec7e5e8 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -966,10 +966,10 @@ static const struct pci_epc_features ks_pcie_am654_epc_features = { .msix_capable = true, .bar[BAR_0] = { .type = BAR_RESERVED, }, .bar[BAR_1] = { .type = BAR_RESERVED, }, - .bar[BAR_2] = { .type = BAR_FIXED, .fixed_size = SZ_1M, }, + .bar[BAR_2] = { .type = BAR_RESIZABLE, }, .bar[BAR_3] = { .type = BAR_FIXED, .fixed_size = SZ_64K, }, .bar[BAR_4] = { .type = BAR_FIXED, .fixed_size = 256, }, - .bar[BAR_5] = { .type = BAR_FIXED, .fixed_size = SZ_1M, }, + .bar[BAR_5] = { .type = BAR_RESIZABLE, }, .align = SZ_1M, };