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authorLucas Stach <l.stach@pengutronix.de>2017-07-31 20:03:05 +0200
committerLucas Stach <l.stach@pengutronix.de>2017-07-31 20:03:05 +0200
commitd14b844b08635c717fb52a294ed8d6872e260315 (patch)
tree18607dcdd29688b2fa9528f79423183a68e9898d /dts/Bindings/i2c/i2c-mt6577.txt
parent858b797e529e26c19bfa893fdb37ed67ff7a6006 (diff)
downloadbarebox-d14b844b08635c717fb52a294ed8d6872e260315.tar.gz
barebox-d14b844b08635c717fb52a294ed8d6872e260315.tar.xz
dts: update to v4.13-rc2
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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-* Mediatek's I2C controller
-
-The Mediatek's I2C controller is used to interface with I2C devices.
-
-Required properties:
- - compatible: value should be either of the following.
- (a) "mediatek,mt6577-i2c", for i2c compatible with mt6577 i2c.
- (b) "mediatek,mt6589-i2c", for i2c compatible with mt6589 i2c.
- (c) "mediatek,mt8127-i2c", for i2c compatible with mt8127 i2c.
- (d) "mediatek,mt8135-i2c", for i2c compatible with mt8135 i2c.
- (e) "mediatek,mt8173-i2c", for i2c compatible with mt8173 i2c.
- - reg: physical base address of the controller and dma base, length of memory
- mapped region.
- - interrupts: interrupt number to the cpu.
- - clock-div: the fixed value for frequency divider of clock source in i2c
- module. Each IC may be different.
- - clocks: clock name from clock manager
- - clock-names: Must include "main" and "dma", if enable have-pmic need include
- "pmic" extra.
-
-Optional properties:
- - clock-frequency: Frequency in Hz of the bus when transfer, the default value
- is 100000.
- - mediatek,have-pmic: platform can control i2c form special pmic side.
- Only mt6589 and mt8135 support this feature.
- - mediatek,use-push-pull: IO config use push-pull mode.
-
-Example:
-
- i2c0: i2c@1100d000 {
- compatible = "mediatek,mt6577-i2c";
- reg = <0x1100d000 0x70>,
- <0x11000300 0x80>;
- interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
- clock-frequency = <400000>;
- mediatek,have-pmic;
- clock-div = <16>;
- clocks = <&i2c0_ck>, <&ap_dma_ck>;
- clock-names = "main", "dma";
- };
-