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    Subject[PATCH 4.14 093/114] ARM: dts: dra7: Fix bus_dma_limit for PCIe
    Date
    From: Kishon Vijay Abraham I <kishon@ti.com>

    commit 90d4d3f4ea45370d482fa609dbae4d2281b4074f upstream.

    Even though commit cfb5d65f2595 ("ARM: dts: dra7: Add bus_dma_limit
    for L3 bus") added bus_dma_limit for L3 bus, the PCIe controller
    gets incorrect value of bus_dma_limit.

    Fix it by adding empty dma-ranges property to axi@0 and axi@1
    (parent device tree node of PCIe controller).

    Cc: stable@kernel.org
    Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
    Signed-off-by: Tony Lindgren <tony@atomide.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/arm/boot/dts/dra7.dtsi | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/arch/arm/boot/dts/dra7.dtsi
    +++ b/arch/arm/boot/dts/dra7.dtsi
    @@ -289,6 +289,7 @@
    #address-cells = <1>;
    ranges = <0x51000000 0x51000000 0x3000
    0x0 0x20000000 0x10000000>;
    + dma-ranges;
    /**
    * To enable PCI endpoint mode, disable the pcie1_rc
    * node and enable pcie1_ep mode.
    @@ -303,7 +304,6 @@
    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>;
    @@ -347,6 +347,7 @@
    #address-cells = <1>;
    ranges = <0x51800000 0x51800000 0x3000
    0x0 0x30000000 0x10000000>;
    + dma-ranges;
    status = "disabled";
    pcie@51800000 {
    compatible = "ti,dra7-pcie";
    @@ -358,7 +359,6 @@
    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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