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    Subject[PATCH 4.9 068/130] ARM: dts: da850-evm: fix read access to SPI flash
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Fabien Parent <fparent@baylibre.com>

    commit 43849785e1079f6606a31cb7fda92d1200849728 upstream.

    Read access to the SPI flash are broken on da850-evm, i.e. the data
    read is not what is actually programmed on the flash.
    According to the datasheet for the M25P64 part present on the da850-evm,
    if the SPI frequency is higher than 20MHz then the READ command is not
    usable anymore and only the FAST_READ command can be used to read data.

    This commit specifies in the DTS that we should use FAST_READ command
    instead of the READ command.

    Tested-by: Kevin Hilman <khilman@baylibre.com>
    Signed-off-by: Fabien Parent <fparent@baylibre.com>
    [nsekhar@ti.com: subject line adjustment]
    Signed-off-by: Sekhar Nori <nsekhar@ti.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    Signed-off-by: Olof Johansson <olof@lixom.net>

    ---
    arch/arm/boot/dts/da850-evm.dts | 1 +
    1 file changed, 1 insertion(+)

    --- a/arch/arm/boot/dts/da850-evm.dts
    +++ b/arch/arm/boot/dts/da850-evm.dts
    @@ -99,6 +99,7 @@
    #size-cells = <1>;
    compatible = "m25p64";
    spi-max-frequency = <30000000>;
    + m25p,fast-read;
    reg = <0>;
    partition@0 {
    label = "U-Boot-SPL";

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