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[v4,5/7] PCI: keystone: Describe Resizable BARs as Resizable BARs

Message ID 20250131182949.465530-14-cassel@kernel.org (mailing list archive)
State New
Delegated to: Krzysztof Wilczyński
Headers show
Series PCI: endpoint: Allow EPF drivers to configure the size of Resizable BARs | expand

Commit Message

Niklas Cassel Jan. 31, 2025, 6:29 p.m. UTC 
Looking at "12.2.2.4.15 PCIe Subsystem BAR Configuration" in the
AM65x TRM:
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 <manivannan.sadhasivam@linaro.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
---
 drivers/pci/controller/dwc/pci-keystone.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 63bd5003da45..fdc610ec7e5e 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,
 };