Commit 27f13774 authored Jan 28, 2020 by Kishon Vijay Abraham I Committed by Tony Lindgren Feb 26, 2020

ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes



'dma-ranges' in a PCI bridge node does correctly set dma masks for PCI
devices not described in the DT. Certain DRA7 platforms (e.g., DRA76)
has RAM above 32-bit boundary (accessible with LPAE config) though the
PCIe bridge will be able to access only 32-bits. Add 'dma-ranges'
property in PCIe RC DT nodes to indicate the host bridge can access
only 32 bits.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

parent 00a39c92

arch/arm/boot/dts/dra7.dtsi

+2 −0

Original line number	Diff line number	Diff line
		@@ -184,6 +184,7 @@
		device_type = "pci";
		ranges = <0x81000000 0 0 0x03000 0 0x00010000
		0x82000000 0 0x20013000 0x13000 0 0xffed000>;
		dma-ranges = <0x02000000 0x0 0x00000000 0x00000000 0x1 0x00000000>;
		bus-range = <0x00 0xff>;
		#interrupt-cells = <1>;
		num-lanes = <1>;
		@@ -238,6 +239,7 @@
		device_type = "pci";
		ranges = <0x81000000 0 0 0x03000 0 0x00010000
		0x82000000 0 0x30013000 0x13000 0 0xffed000>;
		dma-ranges = <0x02000000 0x0 0x00000000 0x00000000 0x1 0x00000000>;
		bus-range = <0x00 0xff>;
		#interrupt-cells = <1>;
		num-lanes = <1>;

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