diff --git a/Documentation/devicetree/bindings/regmap/regmap.txt b/Documentation/devicetree/bindings/regmap/regmap.txt index b494f8b8ef72d8869756c7b18181649e41ef8164..e98a9652ccc8c4d3a2263fe5a67b9064b27d1f04 100644 --- a/Documentation/devicetree/bindings/regmap/regmap.txt +++ b/Documentation/devicetree/bindings/regmap/regmap.txt @@ -5,15 +5,18 @@ Index Device Endianness properties --------------------------------------------------- 1 BE 'big-endian' 2 LE 'little-endian' +3 Native 'native-endian' For one device driver, which will run in different scenarios above on different SoCs using the devicetree, we need one way to simplify this. -Required properties: -- {big,little}-endian: these are boolean properties, if absent - meaning that the CPU and the Device are in the same endianness mode, - these properties are for register values and all the buffers only. +Optional properties: +- {big,little,native}-endian: these are boolean properties, if absent + then the implementation will choose a default based on the device + being controlled. These properties are for register values and all + the buffers only. Native endian means that the CPU and device have + the same endianness. Examples: Scenario 1 : CPU in LE mode & device in LE mode. diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index ee54e841de4ad69c96ecb7897ddc04e889e8c702..343263449aff9859ae4e49c49ce6c50dc78b4d2c 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -557,6 +557,8 @@ enum regmap_endian regmap_get_val_endian(struct device *dev, endian = REGMAP_ENDIAN_BIG; else if (of_property_read_bool(np, "little-endian")) endian = REGMAP_ENDIAN_LITTLE; + else if (of_property_read_bool(np, "native-endian")) + endian = REGMAP_ENDIAN_NATIVE; /* If the endianness was specified in DT, use that */ if (endian != REGMAP_ENDIAN_DEFAULT)