layerscape: add LS1021AIOT board support

The LS1021A-IoT gateway reference design based on the
QorIQ LS1021A processor is a purpose-built, small
footprint hardware platform with a wide array of
high-speed connectivity and low-speed serial interfaces
to support secure delivery of IoT services for home,
business or other commercial location.

- Combines standards-based, open source software with a
  feature-rich IoT gateway design to establish a common,
  open framework for secured IoT service delivery and
  management.

- Provides a wide assortment of high-speed and serial-based
  connectivity in a compact, highly secure design.

- High efficiency through the use of the Arm-based QorIQ
  LS1021A embedded processor.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>

3 files changed, 307 insertions, 2 deletions

diff --git a/target/linux/layerscape/README b/target/linux/layerscape/README
index 1aecf30ac5..5af20e1915 100644
--- a/target/linux/layerscape/README
+++ b/target/linux/layerscape/README
@@ -11,8 +11,8 @@ Layerscape Quick Start
   LS1012ARDB LS1012AFRWY LS1043ARDB LS1046ARDB
 
 * ARMv7
-  LS1021ATWR
-  (SD card boot support on LS1021ATWR)
+  LS1021ATWR LS1021AIOT
+  (SD card boot support on LS1021ATWR/LS1021AIOT)
 
 
 2. Build
diff --git a/target/linux/layerscape/image/armv7.mk b/target/linux/layerscape/image/armv7.mk
index 7a582d79bf..04937a908d 100644
--- a/target/linux/layerscape/image/armv7.mk
+++ b/target/linux/layerscape/image/armv7.mk
@@ -45,3 +45,19 @@ define Device/ls1021atwr-sdboot
     append-rootfs | check-size $(LS_SD_IMAGE_SIZE)
 endef
 TARGET_DEVICES += ls1021atwr-sdboot
+
+define Device/ls1021aiot-sdboot
+  DEVICE_TITLE := LS1021AIOT (SD Card Boot)
+  DEVICE_DTS := ls1021a-iot
+  FILESYSTEMS := ext4
+  IMAGES := sdcard.img
+  IMAGE/sdcard.img := \
+    ls-clean | \
+    ls-append-sdhead $(1) | pad-to 4K | \
+    ls-append $(1)-uboot.bin | pad-to 1M | \
+    ls-append $(1)-uboot-env.bin | pad-to 15M | \
+    ls-append-dtb $$(DEVICE_DTS) | pad-to 16M | \
+    append-kernel | pad-to $(LS_SD_ROOTFSPART_OFFSET)M | \
+    append-rootfs | check-size $(LS_SD_IMAGE_SIZE)
+endef
+TARGET_DEVICES += ls1021aiot-sdboot
diff --git a/target/linux/layerscape/patches-4.14/304-arm-dts-ls1021a-Add-LS1021A-IOT-board-support.patch b/target/linux/layerscape/patches-4.14/304-arm-dts-ls1021a-Add-LS1021A-IOT-board-support.patch
new file mode 100644
index 0000000000..37ddf88e55
--- /dev/null
+++ b/target/linux/layerscape/patches-4.14/304-arm-dts-ls1021a-Add-LS1021A-IOT-board-support.patch
@@ -0,0 +1,289 @@
+From bb1a53f1bcb3f4c5983955a1d419c0e4e2531043 Mon Sep 17 00:00:00 2001
+From: Biwen Li <biwen.li@nxp.com>
+Date: Fri, 26 Oct 2018 16:00:37 +0800
+Subject: [PATCH 06/40] arm: dts: ls1021a: Add LS1021A-IOT board support
+
+Signed-off-by: Biwen Li <biwen.li@nxp.com>
+---
+ arch/arm/boot/dts/Makefile        |   3 +-
+ arch/arm/boot/dts/ls1021a-iot.dts | 262 ++++++++++++++++++++++++++++++
+ 2 files changed, 264 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm/boot/dts/ls1021a-iot.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -496,7 +496,8 @@ dtb-$(CONFIG_SOC_IMX7D) += \
+ 	imx7s-warp.dtb
+ dtb-$(CONFIG_SOC_LS1021A) += \
+ 	ls1021a-qds.dtb \
+-	ls1021a-twr.dtb
++	ls1021a-twr.dtb \
++	ls1021a-iot.dtb
+ dtb-$(CONFIG_SOC_VF610) += \
+ 	vf500-colibri-eval-v3.dtb \
+ 	vf610-colibri-eval-v3.dtb \
+--- /dev/null
++++ b/arch/arm/boot/dts/ls1021a-iot.dts
+@@ -0,0 +1,262 @@
++/*
++ * Copyright 2013-2016 Freescale Semiconductor, Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++
++/dts-v1/;
++#include "ls1021a.dtsi"
++
++/ {
++	model = "LS1021A IOT Board";
++
++	sys_mclk: clock-mclk {
++		compatible = "fixed-clock";
++		#clock-cells = <0>;
++		clock-frequency = <24576000>;
++	};
++
++	regulators {
++		compatible = "simple-bus";
++		#address-cells = <1>;
++		#size-cells = <0>;
++
++		reg_3p3v: regulator@0 {
++			compatible = "regulator-fixed";
++			reg = <0>;
++			regulator-name = "3P3V";
++			regulator-min-microvolt = <3300000>;
++			regulator-max-microvolt = <3300000>;
++			regulator-always-on;
++		};
++
++		reg_2p5v: regulator@1 {
++			compatible = "regulator-fixed";
++			reg = <1>;
++			regulator-name = "2P5V";
++			regulator-min-microvolt = <2500000>;
++			regulator-max-microvolt = <2500000>;
++			regulator-always-on;
++		};
++	};
++
++	sound {
++		compatible = "simple-audio-card";
++		simple-audio-card,format = "i2s";
++		simple-audio-card,widgets =
++			"Microphone", "Microphone Jack",
++			"Headphone", "Headphone Jack",
++			"Speaker", "Speaker Ext",
++			"Line", "Line In Jack";
++		simple-audio-card,routing =
++			"MIC_IN", "Microphone Jack",
++			"Microphone Jack", "Mic Bias",
++			"LINE_IN", "Line In Jack",
++			"Headphone Jack", "HP_OUT",
++			"Speaker Ext", "LINE_OUT";
++
++		simple-audio-card,cpu {
++			sound-dai = <&sai2>;
++			frame-master;
++			bitclock-master;
++		};
++
++		simple-audio-card,codec {
++			sound-dai = <&codec>;
++			frame-master;
++			bitclock-master;
++		};
++	};
++
++	firmware {
++		optee {
++			compatible = "linaro,optee-tz";
++			method = "smc";
++			};
++		};
++};
++
++&enet0 {
++	tbi-handle = <&tbi1>;
++	phy-handle = <&phy1>;
++	phy-connection-type = "sgmii";
++	status = "okay";
++};
++
++&enet1 {
++	tbi-handle = <&tbi1>;
++	phy-handle = <&phy3>;
++	phy-connection-type = "sgmii";
++	status = "okay";
++};
++
++&enet2 {
++	fixed-link = <0 1 1000 0 0>;
++	phy-connection-type = "rgmii-id";
++	status = "okay";
++};
++
++&can0{
++	status = "disabled";
++};
++
++&can1{
++	status = "disabled";
++};
++
++&can2{
++	status = "disabled";
++};
++
++&can3{
++	status = "okay";
++};
++
++&esdhc{
++	status = "okay";
++};
++
++&i2c0 {
++	status = "okay";
++
++	max1239@35 {
++		compatible = "maxim,max1239";
++		reg = <0x35>;
++		#io-channel-cells = <1>;
++	};
++
++	codec: sgtl5000@2a {
++               #sound-dai-cells=<0x0>;
++		compatible = "fsl,sgtl5000";
++		reg = <0x2a>;
++		VDDA-supply = <&reg_3p3v>;
++		VDDIO-supply = <&reg_2p5v>;
++		clocks = <&sys_mclk 1>;
++	};
++
++	pca9555: pca9555@23 {
++		compatible = "nxp,pca9555";
++		/*pinctrl-names = "default";*/
++		/*interrupt-parent = <&gpio2>;
++		interrupts = <19 0x2>;*/
++		gpio-controller;
++		#gpio-cells = <2>;
++		interrupt-controller;
++		#interrupt-cells = <2>;
++		reg = <0x23>;
++	};
++
++	ina220@44 {
++		compatible = "ti,ina220";
++		reg = <0x44>;
++		shunt-resistor = <1000>;
++	};
++
++	ina220@45 {
++		compatible = "ti,ina220";
++		reg = <0x45>;
++		shunt-resistor = <1000>;
++	};
++
++	lm75b@48 {
++                compatible = "nxp,lm75a";
++                reg = <0x48>;
++        };
++
++	adt7461a@4c {
++		compatible = "adt7461a";
++		reg = <0x4c>;
++	};
++
++	hdmi: sii9022a@39 {
++		compatible = "fsl,sii902x";
++		reg = <0x39>;
++		interrupts = <GIC_SPI 163 IRQ_TYPE_EDGE_RISING>;
++	};
++};
++
++&i2c1 {
++	status = "disabled";
++};
++
++&ifc {
++	status = "disabled";
++};
++
++&lpuart0 {
++	status = "okay";
++};
++
++&mdio0 {
++	phy0: ethernet-phy@0 {
++		reg = <0x0>;
++	};
++	phy1: ethernet-phy@1 {
++		reg = <0x1>;
++	};
++	phy2: ethernet-phy@2 {
++		reg = <0x2>;
++	};
++	phy3: ethernet-phy@3 {
++		reg = <0x3>;
++	};
++	tbi1: tbi-phy@1f {
++		reg = <0x1f>;
++		device_type = "tbi-phy";
++	};
++};
++
++&qspi {
++	num-cs = <2>;
++	status = "okay";
++
++	qflash0: s25fl128s@0 {
++		compatible = "spansion,s25fl129p1";
++		#address-cells = <1>;
++		#size-cells = <1>;
++		spi-max-frequency = <20000000>;
++		reg = <0>;
++	};
++};
++
++&sai2 {
++	status = "okay";
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&uart1 {
++	status = "okay";
++};
++
++&dcu {
++	display = <&display>;
++	status = "okay";
++
++	display: display@0 {
++		bits-per-pixel = <24>;
++
++		display-timings {
++			native-mode = <&timing0>;
++
++			timing0: mode0 {
++				clock-frequency = <25000000>;
++				hactive = <640>;
++				vactive = <480>;
++				hback-porch = <80>;
++				hfront-porch = <80>;
++				vback-porch = <16>;
++				vfront-porch = <16>;
++				hsync-len = <12>;
++				vsync-len = <2>;
++				hsync-active = <1>;
++				vsync-active = <1>;
++			};
++		};
++	};
++};