mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 07:34:06 +08:00
8ffaa0f40d
To achieve DT support, we need to populate a custom platform_data in a private struct from DT information. To simplify code, the adapter and algorithm are also put into the private struct. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
33 lines
720 B
Plaintext
33 lines
720 B
Plaintext
Device-Tree bindings for i2c gpio driver
|
|
|
|
Required properties:
|
|
- compatible = "i2c-gpio";
|
|
- gpios: sda and scl gpio
|
|
|
|
|
|
Optional properties:
|
|
- i2c-gpio,sda-open-drain: sda as open drain
|
|
- i2c-gpio,scl-open-drain: scl as open drain
|
|
- i2c-gpio,scl-output-only: scl as output only
|
|
- i2c-gpio,delay-us: delay between GPIO operations (may depend on each platform)
|
|
- i2c-gpio,timeout-ms: timeout to get data
|
|
|
|
Example nodes:
|
|
|
|
i2c@0 {
|
|
compatible = "i2c-gpio";
|
|
gpios = <&pioA 23 0 /* sda */
|
|
&pioA 24 0 /* scl */
|
|
>;
|
|
i2c-gpio,sda-open-drain;
|
|
i2c-gpio,scl-open-drain;
|
|
i2c-gpio,delay-us = <2>; /* ~100 kHz */
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
rv3029c2@56 {
|
|
compatible = "rv3029c2";
|
|
reg = <0x56>;
|
|
};
|
|
};
|