From ce5926aa6dfef677fcdd3e6f8fb89a517cf4583e Mon Sep 17 00:00:00 2001
From: Maureen Helm <maureen.helm@nxp.com>
Date: Wed, 16 Jan 2019 15:03:51 -0600
Subject: [PATCH] dts: Add bindings for imx lpi2c

Adds device tree bindings for the imx lpi2c peripheral.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
---
 dts/arm/nxp/nxp_rt.dtsi             | 49 +++++++++++++++++++++++++++++
 dts/bindings/i2c/nxp,imx-lpi2c.yaml | 30 ++++++++++++++++++
 2 files changed, 79 insertions(+)
 create mode 100644 dts/bindings/i2c/nxp,imx-lpi2c.yaml

diff --git a/dts/arm/nxp/nxp_rt.dtsi b/dts/arm/nxp/nxp_rt.dtsi
index 01c60ffd617..27598db6bbf 100644
--- a/dts/arm/nxp/nxp_rt.dtsi
+++ b/dts/arm/nxp/nxp_rt.dtsi
@@ -7,6 +7,7 @@
 #include <arm/armv7-m.dtsi>
 #include <dt-bindings/clock/imx_ccm.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/i2c/i2c.h>
 
 / {
 	cpus {
@@ -117,6 +118,54 @@
 			#gpio-cells = <2>;
 		};
 
+		i2c1: i2c@403f0000 {
+			compatible = "nxp,imx-lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x403f0000 0x4000>;
+			interrupts = <28 0>;
+			clocks = <&ccm IMX_CCM_LPI2C_CLK 0x70 6>;
+			label = "I2C_1";
+			status = "disabled";
+		};
+
+		i2c2: i2c@403f4000 {
+			compatible = "nxp,imx-lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x403f4000 0x4000>;
+			interrupts = <29 0>;
+			clocks = <&ccm IMX_CCM_LPI2C_CLK 0x70 8>;
+			label = "I2C_2";
+			status = "disabled";
+		};
+
+		i2c3: i2c@403f8000 {
+			compatible = "nxp,imx-lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x403f8000 0x4000>;
+			interrupts = <30 0>;
+			clocks = <&ccm IMX_CCM_LPI2C_CLK 0x70 10>;
+			label = "I2C_3";
+			status = "disabled";
+		};
+
+		i2c4: i2c@403fc000 {
+			compatible = "nxp,imx-lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x403fc000 0x4000>;
+			interrupts = <31 0>;
+			clocks = <&ccm IMX_CCM_LPI2C_CLK 0x80 24>;
+			label = "I2C_4";
+			status = "disabled";
+		};
+
 		iomuxc: iomuxc@401f8000 {
 			reg = <0x401f8000 0x4000>;
 			label = "PINMUX_0";
diff --git a/dts/bindings/i2c/nxp,imx-lpi2c.yaml b/dts/bindings/i2c/nxp,imx-lpi2c.yaml
new file mode 100644
index 00000000000..8f2564c5ad6
--- /dev/null
+++ b/dts/bindings/i2c/nxp,imx-lpi2c.yaml
@@ -0,0 +1,30 @@
+#
+# Copyright (c) 2019, NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+---
+title: NXP LPI2C
+version: 0.1
+
+description: >
+    This binding gives a base representation of the NXP i.MX LPI2C controller
+
+inherits:
+    !include i2c.yaml
+
+properties:
+    compatible:
+      constraint: "nxp,imx-lpi2c"
+
+    reg:
+      type: int
+      description: mmio register space
+      generation: define
+      category: required
+
+    interrupts:
+      type: compound
+      category: required
+      description: required interrupts
+      generation: define