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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-08-31 17:11:11 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2018-09-02 23:51:15 +0200 |
| commit | ffbc01bff2ef98430e4ab486b878f04fe7bb7c29 (patch) | |
| tree | 10c31169372f72d0a1e575b943557a3e41ed9626 /Documentation/devicetree/bindings/i2c/i2c-designware.txt | |
| parent | i2c: designware: allow IP specific sda_hold_time (diff) | |
| download | linux-ffbc01bff2ef98430e4ab486b878f04fe7bb7c29.tar.xz linux-ffbc01bff2ef98430e4ab486b878f04fe7bb7c29.zip | |
dt-bindings: i2c: designware: document MSCC Ocelot bindings
Document bindings for the Microsemi Ocelot integration of the Designware
I2C controller.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-designware.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-designware.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt index fbb0a6d8b964..3e4bcc2fb6f7 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt @@ -3,6 +3,7 @@ Required properties : - compatible : should be "snps,designware-i2c" + or "mscc,ocelot-i2c" with "snps,designware-i2c" for fallback - reg : Offset and length of the register set for the device - interrupts : <IRQ> where IRQ is the interrupt number. @@ -11,8 +12,12 @@ Recommended properties : - clock-frequency : desired I2C bus clock frequency in Hz. Optional properties : + - reg : for "mscc,ocelot-i2c", a second register set to configure the SDA hold + time, named ICPU_CFG:TWI_DELAY in the datasheet. + - i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds. - This option is only supported in hardware blocks version 1.11a or newer. + This option is only supported in hardware blocks version 1.11a or newer and + on Microsemi SoCs ("mscc,ocelot-i2c" compatible). - i2c-scl-falling-time-ns : should contain the SCL falling time in nanoseconds. This value which is by default 300ns is used to compute the tLOW period. |