| Message ID | 20200128064147.18276-1-kishon@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes | expand |
* Kishon Vijay Abraham I <kishon@ti.com> [200127 22:39]: > '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. Sorry looks like I missed this fix earlier, applying into fixes. Thanks, Tony
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index 73e5011f531a..c5af7530be7c 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -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>;
'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> --- arch/arm/boot/dts/dra7.dtsi | 2 ++ 1 file changed, 2 insertions(+)