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authorSascha Hauer <s.hauer@pengutronix.de>2014-06-24 20:27:16 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2014-06-24 20:27:16 +0200
commit3d2c3442e7f019d93606ffa0a15933f0f9e7742a (patch)
tree23166f0296205bc294be6840672a7a9fcfe43a30 /dts/Bindings/i2c
parent9313920df6d3d55fbd03ce8ec1c0da9a10c29824 (diff)
downloadbarebox-3d2c3442e7f019d93606ffa0a15933f0f9e7742a.tar.gz
barebox-3d2c3442e7f019d93606ffa0a15933f0f9e7742a.tar.xz
dts: update to v3.16-rc2
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/i2c')
-rw-r--r--dts/Bindings/i2c/i2c-rk3x.txt42
-rw-r--r--dts/Bindings/i2c/i2c-sunxi-p2wi.txt41
2 files changed, 83 insertions, 0 deletions
diff --git a/dts/Bindings/i2c/i2c-rk3x.txt b/dts/Bindings/i2c/i2c-rk3x.txt
new file mode 100644
index 0000000000..dde6c22ce9
--- /dev/null
+++ b/dts/Bindings/i2c/i2c-rk3x.txt
@@ -0,0 +1,42 @@
+* 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>;
+};
diff --git a/dts/Bindings/i2c/i2c-sunxi-p2wi.txt b/dts/Bindings/i2c/i2c-sunxi-p2wi.txt
new file mode 100644
index 0000000000..6b765485af
--- /dev/null
+++ b/dts/Bindings/i2c/i2c-sunxi-p2wi.txt
@@ -0,0 +1,41 @@
+
+* Allwinner P2WI (Push/Pull 2 Wire Interface) controller
+
+Required properties :
+
+ - reg : Offset and length of the register set for the device.
+ - compatible : Should one of the following:
+ - "allwinner,sun6i-a31-p2wi"
+ - interrupts : The interrupt line connected to the P2WI peripheral.
+ - clocks : The gate clk connected to the P2WI peripheral.
+ - resets : The reset line connected to the P2WI peripheral.
+
+Optional properties :
+
+ - clock-frequency : Desired P2WI bus clock frequency in Hz. If not set the
+default frequency is 100kHz
+
+A P2WI may contain one child node encoding a P2WI slave device.
+
+Slave device properties:
+ Required properties:
+ - reg : the I2C slave address used during the initialization
+ process to switch from I2C to P2WI mode
+
+Example:
+
+ p2wi@01f03400 {
+ compatible = "allwinner,sun6i-a31-p2wi";
+ reg = <0x01f03400 0x400>;
+ interrupts = <0 39 4>;
+ clocks = <&apb0_gates 3>;
+ clock-frequency = <6000000>;
+ resets = <&apb0_rst 3>;
+
+ axp221: pmic@68 {
+ compatible = "x-powers,axp221";
+ reg = <0x68>;
+
+ /* ... */
+ };
+ };