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https://github.com/brain-hackers/u-boot-brain
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c25e9e04a1
Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01: - i2c/nx_i2c.c: Some adaptions mainly because of changes in "struct udevice". - several Bugfixes in nx_i2c.c. - the driver has been for s5p6818 only. Code extended appropriately in order s5p4418 is also working. - "probe_chip" added. - pinctrl-driver/dt is used instead of configuring the i2c I/O-pins in the i2c-driver. - '#ifdef CONFIG...' changed to 'if (IS_ENABLED(CONFIG...))' where possible (and similar). - livetree API (dev_read_...) is used instead of fdt one (fdt...). Signed-off-by: Stefan Bosch <stefan_b@posteo.net>
29 lines
773 B
Plaintext
29 lines
773 B
Plaintext
I2C controller embedded in Nexell's/Samsung's SoC S5P4418 and S5P6818
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Driver:
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- drivers/i2c/nx_i2c.c
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Required properties:
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- #address-cells = <1>;
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- #size-cells = <0>;
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- compatible = "nexell,s5pxx18-i2c";
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- reg = <i2c_base 0x100>;
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Where i2c_base has to be the base address of the i2c-register set.
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I2C0: 0xc00a4000
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I2C1: 0xc00a5000
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I2C2: 0xc00a6000
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Optional properties:
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- clock-frequency: Desired I2C bus frequency in Hz, default value is 100000.
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- i2c-sda-delay-ns (S5P6818 only): SDA delay in ns, default value is 0.
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- Child nodes conforming to i2c bus binding.
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Example:
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i2c0:i2c@c00a4000 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "nexell,s5pxx18-i2c";
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reg = <0xc00a4000 0x100>;
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clock-frequency = <400000>;
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};
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