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authorSuneel Garapati <sgarapati@marvell.com>2020-05-26 14:13:07 +0200
committerHeiko Schocher <hs@denx.de>2020-07-09 06:02:44 +0200
commit5c2c3e8b44e7fa9bc81e6e367797b3ee2b424168 (patch)
treeb317fc89db507fde6b48d46f6d7d7a5702f68e6d /doc
parent61608f395e7dcb2be6060407a72a1149b046430a (diff)
i2c: octeon_i2c: Add I2C controller driver for Octeon
Add support for I2C controllers found on Octeon II/III and Octeon TX TX2 SoC platforms. Signed-off-by: Aaron Williams <awilliams@marvell.com> Signed-off-by: Suneel Garapati <sgarapati@marvell.com> Signed-off-by: Stefan Roese <sr@denx.de> Cc: Heiko Schocher <hs@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Aaron Williams <awilliams@marvell.com> Cc: Chandrakala Chavva <cchavva@marvell.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
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diff --git a/doc/device-tree-bindings/i2c/octeon-i2c.txt b/doc/device-tree-bindings/i2c/octeon-i2c.txt
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+* I2C controller embedded in Marvell Octeon platforms
+
+Required properties :
+- compatible : Must be "cavium,octeon-7890-twsi" or a compatible string
+- reg : Offset and length of the register set for the device
+- clocks: Must contain the input clock of the I2C instance
+- #address-cells = <1>;
+- #size-cells = <0>;
+
+Optional properties :
+- clock-frequency : Desired I2C bus clock frequency in Hz. If not specified,
+ the default 100 kHz frequency will be used. As only Normal, Fast and Fast+
+ modes are implemented, possible values are 100000, 400000 and 1000000.
+
+Example :
+
+ i2c0: i2c@1180000001000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "cavium,octeon-7890-twsi";
+ reg = <0x11800 0x00001000 0x0 0x200>;
+ clock-frequency = <100000>;
+ clocks = <&sclk>;
+ };