lkml.org 
[lkml]   [2014]   [Apr]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCHv2 2/3] regmap: Add the DT binding documentation for endianness
    Date
    Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
    ---
    .../bindings/regmap/regmap-endianness.txt | 49 ++++++++++++++++++++++
    1 file changed, 49 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/regmap/regmap-endianness.txt

    diff --git a/Documentation/devicetree/bindings/regmap/regmap-endianness.txt b/Documentation/devicetree/bindings/regmap/regmap-endianness.txt
    new file mode 100644
    index 0000000..045d347
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/regmap/regmap-endianness.txt
    @@ -0,0 +1,49 @@
    +Device-Tree bindings for regmap endianness
    +
    +Required properties:
    +- reg-endian: Register endianness, this string property could be absent
    + as default endianness, or must be one of 'BE', 'LE' and 'NT'.
    +- val-endian: Value endianness, this string property could be absent as
    + default endianness, or must be one of 'BE', 'LE' and 'NT'.
    +
    +The Endianness flags supported by regmap:
    +
    +DT properties Macros
    +----------------------------------------
    + 'LE' REGMAP_ENDIAN_LITTLE
    + 'BE' REGMAP_ENDIAN_BIG
    + 'NT' REGMAP_ENDIAN_NATIVE
    + Absent REGMAP_ENDIAN_DEFAULT
    +
    +Examples:
    +Case 1 : CPU in LE mode & SAI device in BE mode, using mmio.
    +sai2: sai@40031000 {
    + compatible = "fsl,vf610-sai";
    + reg = <0x40031000 0x1000>;
    + ...
    + val-endian = 'BE';
    +};
    +
    +Case 2 : CPU in BE mode & SAI device in LE mode, using mmio.
    +sai2: sai@40031000 {
    + compatible = "fsl,vf610-sai";
    + reg = <0x40031000 0x1000>;
    + ...
    + val-endian = 'LE';
    +};
    +
    +Case 3 : CPU in LE mode & SAI device in LE mode, using mmio.
    +sai2: sai@40031000 {
    + compatible = "fsl,vf610-sai";
    + reg = <0x40031000 0x1000>;
    + ...
    + val-endian = 'NT'; or just absent.
    +};
    +
    +Case 4 : CPU in BE mode & SAI device in BE mode, using mmio.
    +sai2: sai@40031000 {
    + compatible = "fsl,vf610-sai";
    + reg = <0x40031000 0x1000>;
    + ...
    + val-endian = 'NT'; or just absent.
    +};
    --
    1.8.4



    \
     
     \ /
      Last update: 2014-04-02 13:41    [W:4.185 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site