linux-kernel - [PATCH] dt-bindings: PCI: xilinx-cpm: Fix ranges property to avoid overlapping of bridge register and 32-bit BAR addresses

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Date: Mon, 24 Jun 2024 16:40:22 +0530
From: Thippeswamy Havalige <thippesw@....com>
To: <bhelgaas@...gle.com>, <kw@...ux.com>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <lpieralisi@...nel.org>
CC: <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <bharat.kumar.gogada@....com>, "Thippeswamy
 Havalige" <thippesw@....com>
Subject: [PATCH] dt-bindings: PCI: xilinx-cpm: Fix ranges property to avoid overlapping of bridge register and 32-bit BAR addresses

The current configuration had non-prefetchable memory overlapping with
bridge registers by 64KB from base address. This patch fixes the 'ranges'
property in the device tree by adjusting the non-prefetchable memory
addresses beyond the 64KB mark to prevent conflicts. 

Signed-off-by: Thippeswamy Havalige <thippesw@....com>
---
 Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
index 4770ce02fcc3..989fb0fa2577 100644
--- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
+++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
@@ -92,7 +92,7 @@ examples:
                                        <0 0 0 3 &pcie_intc_0 2>,
                                        <0 0 0 4 &pcie_intc_0 3>;
                        bus-range = <0x00 0xff>;
-                       ranges = <0x02000000 0x0 0xe0000000 0x0 0xe0000000 0x0 0x10000000>,
+                       ranges = <0x02000000 0x0 0xe0010000 0x0 0xe0010000 0x0 0x10000000>,
                                 <0x43000000 0x80 0x00000000 0x80 0x00000000 0x0 0x80000000>;
                        msi-map = <0x0 &its_gic 0x0 0x10000>;
                        reg = <0x0 0xfca10000 0x0 0x1000>,
-- 
2.25.1