mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
c41aa3ce93
Driver for the native I2C adapter found in Rockchip RK3xxx SoCs. Configuration is only possible through devicetree. The driver is interrupt driven and supports the I2C_M_IGNORE_NAK mangling bit. Signed-off-by: Max Schwarz <max.schwarz@online.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
43 lines
981 B
Plaintext
43 lines
981 B
Plaintext
* Rockchip RK3xxx I2C controller
|
|
|
|
This driver interfaces with the native I2C controller present in Rockchip
|
|
RK3xxx SoCs.
|
|
|
|
Required properties :
|
|
|
|
- reg : Offset and length of the register set for the device
|
|
- compatible : should be "rockchip,rk3066-i2c", "rockchip,rk3188-i2c" or
|
|
"rockchip,rk3288-i2c".
|
|
- interrupts : interrupt number
|
|
- clocks : parent clock
|
|
|
|
Required on RK3066, RK3188 :
|
|
|
|
- rockchip,grf : the phandle of the syscon node for the general register
|
|
file (GRF)
|
|
- on those SoCs an alias with the correct I2C bus ID (bit offset in the GRF)
|
|
is also required.
|
|
|
|
Optional properties :
|
|
|
|
- clock-frequency : SCL frequency to use (in Hz). If omitted, 100kHz is used.
|
|
|
|
Example:
|
|
|
|
aliases {
|
|
i2c0 = &i2c0;
|
|
}
|
|
|
|
i2c0: i2c@2002d000 {
|
|
compatible = "rockchip,rk3188-i2c";
|
|
reg = <0x2002d000 0x1000>;
|
|
interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
rockchip,grf = <&grf>;
|
|
|
|
clock-names = "i2c";
|
|
clocks = <&cru PCLK_I2C0>;
|
|
};
|