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| author | Ganesan Ramalingam <ganesanr@broadcom.com> | 2012-07-13 15:44:25 +0200 |
|---|---|---|
| committer | Wolfram Sang <w.sang@pengutronix.de> | 2012-07-14 13:30:25 +0200 |
| commit | 7326e38ffe894d0cd2904704b7d8c53d4a55d752 (patch) | |
| tree | 7261b5bad76ce15dbad07f78a5b5e4b210f6d634 /Documentation/devicetree | |
| parent | V4L/DVB: mfd: use reg_shift instead of regstep (diff) | |
| download | linux-7326e38ffe894d0cd2904704b7d8c53d4a55d752.tar.xz linux-7326e38ffe894d0cd2904704b7d8c53d4a55d752.zip | |
i2c: i2c-ocores: support for 16bit and 32bit IO
Some architectures supports only 16-bit or 32-bit read/write access to
their IO space. Add a 'reg-io-width' platform and OF parameter which
specifies the IO width to support these platforms.
reg-io-width can be specified as 1, 2 or 4, and has a default value
of 1 if it is unspecified.
Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com>
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-ocores.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt index 1c9334bfc39c..c15781f4dc8c 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt @@ -10,6 +10,7 @@ Required properties: Optional properties: - reg-shift : device register offsets are shifted by this value +- reg-io-width : io register width in bytes (1, 2 or 4) - regstep : deprecated, use reg-shift above Example: @@ -23,6 +24,7 @@ Example: clock-frequency = <20000000>; reg-shift = <0>; /* 8 bit registers */ + reg-io-width = <1>; /* 8 bit read/write */ dummy@60 { compatible = "dummy"; |