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    Subject[PATCH v9 4/6] Documentation: DT: PL011: hi6220: add compatible string for Hisilicon designed UART
    Date
    Hisilicon does some performance enhancements based on PL011(e.g. larger
    FIFO length), so add one compatible string "hisilicon,hi6220-uart" for
    future optimisations or workarounds works.

    Signed-off-by: Bintian Wang <bintian.wang@huawei.com>
    Suggested-by: Mark Rutland <mark.rutland@arm.com>
    ---
    Documentation/devicetree/bindings/serial/pl011.txt | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    diff --git a/Documentation/devicetree/bindings/serial/pl011.txt b/Documentation/devicetree/bindings/serial/pl011.txt
    index ba3ecb8..cb9fd9d 100644
    --- a/Documentation/devicetree/bindings/serial/pl011.txt
    +++ b/Documentation/devicetree/bindings/serial/pl011.txt
    @@ -1,7 +1,9 @@
    * ARM AMBA Primecell PL011 serial UART

    Required properties:
    -- compatible: must be "arm,primecell", "arm,pl011"
    +- compatible: should contain one of the following sequences:
    + * "arm,pl011", "arm,primecell"
    + * "hisilicon,hi6220-pl011", "arm,pl011", "arm,primecell"
    - reg: exactly one register range with length 0x1000
    - interrupts: exactly one interrupt specifier

    --
    1.7.9.5


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