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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2014-03-04 17:28:38 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-03-05 17:30:11 +0100 |
| commit | c7dcb1fec059c429f5096d20ab9e0f439fcfa909 (patch) | |
| tree | 433f6711c2b155bd92fc63199d964b547f5794a7 /Documentation | |
| parent | i2c: mv64xxx: Add reset deassert call (diff) | |
| download | linux-c7dcb1fec059c429f5096d20ab9e0f439fcfa909.tar.xz linux-c7dcb1fec059c429f5096d20ab9e0f439fcfa909.zip | |
i2c: mv64xxx: Add support for the Allwinner A31 I2C driver
The Allwinner A31 I2C controller is almost identical to the one used in the
other Allwinner SoCs, except for the fact that it needs to clear the interrupt
by setting the INT_FLAGS bit in the control register, instead of clearing it.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt index 21062bc3408d..befd4fb4764f 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt @@ -4,19 +4,26 @@ Required properties : - reg : Offset and length of the register set for the device - - compatible : Should be "marvell,mv64xxx-i2c" or "allwinner,sun4i-i2c" - or "marvell,mv78230-i2c" or "marvell,mv78230-a0-i2c" - Note: Only use "marvell,mv78230-a0-i2c" for a very rare, - initial version of the SoC which had broken offload - support. Linux auto-detects this and sets it - appropriately. + - compatible : Should be either: + - "allwinner,sun4i-i2c" + - "allwinner,sun6i-a31-i2c" + - "marvell,mv64xxx-i2c" + - "marvell,mv78230-i2c" + - "marvell,mv78230-a0-i2c" + * Note: Only use "marvell,mv78230-a0-i2c" for a + very rare, initial version of the SoC which + had broken offload support. Linux + auto-detects this and sets it appropriately. - interrupts : The interrupt number Optional properties : - clock-frequency : Desired I2C bus clock frequency in Hz. If not set the default frequency is 100kHz - - resets : phandle to the parent reset controller + + - resets : phandle to the parent reset controller. Mandatory + whenever you're using the "allwinner,sun6i-a31-i2c" + compatible. Examples: |