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[V2,7/7] ARM64: tegra: limit PCIe config space mapping to 4K for T186

Message ID 1508769312-12465-8-git-send-email-vidyas@nvidia.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Vidya Sagar Oct. 23, 2017, 2:35 p.m. UTC 
reduces PCIe config space mapping size from its current 256MB
to 4K to have only 4K of virtual memory mapping and to be
in line with driver implementation

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
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Patch

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 7c3a2bdd4644..c64550c32d72 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -361,7 +361,7 @@ 
 		device_type = "pci";
 		reg = <0x0 0x10003000 0x0 0x00000800   /* PADS registers */
 		       0x0 0x10003800 0x0 0x00000800   /* AFI registers */
-		       0x0 0x40000000 0x0 0x10000000>; /* configuration space */
+		       0x0 0x40000000 0x0 0x00001000>; /* configuration space */
 		reg-names = "pads", "afi", "cs";
 
 		interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>, /* controller interrupt */
@@ -379,9 +379,9 @@ 
 		ranges = <0x82000000 0 0x10000000 0x0 0x10000000 0 0x00001000   /* port 0 configuration space */
 			  0x82000000 0 0x10001000 0x0 0x10001000 0 0x00001000   /* port 1 configuration space */
 			  0x82000000 0 0x10004000 0x0 0x10004000 0 0x00001000   /* port 2 configuration space */
-			  0x81000000 0 0x0        0x0 0x50000000 0 0x00010000   /* downstream I/O (64 KiB) */
-			  0x82000000 0 0x50100000 0x0 0x50100000 0 0x07F00000   /* non-prefetchable memory (127 MiB) */
-			  0xc2000000 0 0x58000000 0x0 0x58000000 0 0x28000000>; /* prefetchable memory (640 MiB) */
+			  0x81000000 0 0x0        0x0 0x40001000 0 0x00010000   /* downstream I/O (64 KiB) */
+			  0x82000000 0 0x40100000 0x0 0x40100000 0 0x07F00000   /* non-prefetchable memory (127 MiB) */
+			  0xc2000000 0 0x48000000 0x0 0x48000000 0 0x38000000>; /* prefetchable memory (896 MiB) */
 
 		clocks = <&bpmp TEGRA186_CLK_AFI>,
 			 <&bpmp TEGRA186_CLK_PCIE>,