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

[ Upstream commit 27f13774654ea6bd0b6fc9b97cce8d19e5735661 ]

'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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index fec965009b9fc5ed9a747695a9215e046bde5aef..a40a7af85d02087ef20470ff1ff0685af6aa4575 100644 (file)
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -302,6 +302,7 @@
                                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>;
@@ -356,6 +357,7 @@
                                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>;