Subject: [PATCH v3] qcom: ipq40xx: Add basic board/dts support for IPQ40XX SoC

From: [email-masked] (Varadarajan Narayanan)
Date: Mon, 24 Aug 2015 14:58:13 +0530

Add initial dts files and SoC support for IPQ40XX

Signed-off-by: Varadarajan Narayanan <[email-masked]>
---
Changes in v2:
  - Added devicetree bindings documentation

Changes in v3:
  - Split 'gcnt' into a separate patch
  - Added the new entries to Makefiles, Kconfig & board.c in sorted order
  - Used "qcom,ipq40xx" instead of "qcom,ipq40xx-r3pc" in board.c

 Documentation/devicetree/bindings/qcom.txt | 16 ++++++
 arch/arm/boot/dts/Makefile                 |  1 +
 arch/arm/boot/dts/qcom-ipq40xx-r3pc.dts    | 33 ++++++++++++
 arch/arm/boot/dts/qcom-ipq40xx.dtsi        | 81 ++++++++++++++++++++++++++++++
 arch/arm/configs/ipq_defconfig             |  1 +
 arch/arm/mach-qcom/Kconfig                 |  4 ++
 arch/arm/mach-qcom/board.c                 |  1 +
 7 files changed, 137 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/qcom.txt
 create mode 100644 arch/arm/boot/dts/qcom-ipq40xx-r3pc.dts
 create mode 100644 arch/arm/boot/dts/qcom-ipq40xx.dtsi

diff --git a/Documentation/devicetree/bindings/qcom.txt b/Documentation/devicetree/bindings/qcom.txt
new file mode 100644
index 0000000..7d56bd0
--- /dev/null
+++ b/Documentation/devicetree/bindings/qcom.txt
@@ -0,0 +1,16 @@
+Qualcomm IPQ device tree bindings
+---------------------------------
+
+System on Chip
+
+Device tree must specify which SoC it uses, with one of the
+following compatible strings
+
+       "qcom,ipq40xx"
+
+Platform
+
+Device tree must specify which Platform it uses, with one of the
+following compatible strings
+
+       "qcom,ipq40xx-r3pc"
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 246473a..d20d49c 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -474,6 +474,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
 	qcom-apq8074-dragonboard.dtb \
 	qcom-apq8084-ifc6540.dtb \
 	qcom-apq8084-mtp.dtb \
+	qcom-ipq40xx-r3pc.dtb \
 	qcom-ipq8064-ap148.dtb \
 	qcom-msm8660-surf.dtb \
 	qcom-msm8960-cdp.dtb \
diff --git a/arch/arm/boot/dts/qcom-ipq40xx-r3pc.dts b/arch/arm/boot/dts/qcom-ipq40xx-r3pc.dts
new file mode 100644
index 0000000..7e4e629
--- /dev/null
+++ b/arch/arm/boot/dts/qcom-ipq40xx-r3pc.dts
@@ -0,0 +1,33 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "qcom-ipq40xx.dtsi"
+
+/ {
+	model = "Qualcomm Technologies, Inc. IPQ40XX R3PC";
+	compatible = "qcom,ipq40xx-r3pc", "qcom,ipq40xx";
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>; /* 512MB */
+	};
+
+	chosen {
+		bootargs = "root=/dev/ram rw init=/init console=ttyMSM0,115200n8 initrd=0x82000000,0x000E2246";
+	};
+
+	soc {
+		serial at 78b0000 {
+			status = "ok";
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/qcom-ipq40xx.dtsi b/arch/arm/boot/dts/qcom-ipq40xx.dtsi
new file mode 100644
index 0000000..f572f38
--- /dev/null
+++ b/arch/arm/boot/dts/qcom-ipq40xx.dtsi
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/dts-v1/;
+
+#include "skeleton.dtsi"
+
+/ {
+	model = "Qualcomm Technologies, Inc. IPQ40XX";
+	compatible = "qcom,ipq40xx";
+	interrupt-parent = <&intc>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu at 0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x0>;
+		};
+
+		cpu at 1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x1>;
+		};
+
+		cpu at 2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x2>;
+		};
+
+		cpu at 3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x3>;
+		};
+	};
+
+	soc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		compatible = "simple-bus";
+
+		intc: interrupt-controller at b000000 {
+			compatible = "qcom,msm-qgic2";
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			reg = <0x0b000000 0x1000>,
+			<0x0b002000 0x1000>;
+		};
+
+		timer {
+			compatible = "arm,armv7-timer";
+			interrupts = <1 2 0xf08>,
+				     <1 3 0xf08>,
+				     <1 4 0xf08>,
+				     <1 1 0xf08>;
+			clock-frequency = <20833333>;
+		};
+
+		serial at 78b0000 {
+			compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
+			reg = <0x78b0000 0x200>;
+			interrupts = <0 108 0>;
+			status = "disabled";
+		};
+	};
+};
diff --git a/arch/arm/configs/ipq_defconfig b/arch/arm/configs/ipq_defconfig
index 1cabd8b..89bf8ad 100644
--- a/arch/arm/configs/ipq_defconfig
+++ b/arch/arm/configs/ipq_defconfig
@@ -21,6 +21,7 @@ CONFIG_ARCH_QCOM=y
 CONFIG_ARCH_MSM8X60=y
 CONFIG_ARCH_MSM8960=y
 CONFIG_ARCH_MSM8974=y
+CONFIG_ARCH_IPQ40XX=y
 CONFIG_ARCH_IPQ8064=y
 CONFIG_SMP=y
 CONFIG_PREEMPT=y
diff --git a/arch/arm/mach-qcom/Kconfig b/arch/arm/mach-qcom/Kconfig
index fab49a2..70812aa 100644
--- a/arch/arm/mach-qcom/Kconfig
+++ b/arch/arm/mach-qcom/Kconfig
@@ -22,6 +22,10 @@ config ARCH_MSM8974
 	bool "Enable support for MSM8974"
 	select HAVE_ARM_ARCH_TIMER
 
+config ARCH_IPQ40XX
+	bool "Enable support for IPQ40XX"
+	select HAVE_ARM_ARCH_TIMER
+
 config ARCH_IPQ8064
 	bool "Enable support for IPQ806x"
 	select CLKSRC_QCOM
diff --git a/arch/arm/mach-qcom/board.c b/arch/arm/mach-qcom/board.c
index 6d8bbf7..af9e247 100644
--- a/arch/arm/mach-qcom/board.c
+++ b/arch/arm/mach-qcom/board.c
@@ -18,6 +18,7 @@ static const char * const qcom_dt_match[] __initconst = {
 	"qcom,apq8064",
 	"qcom,apq8074-dragonboard",
 	"qcom,apq8084",
+	"qcom,ipq40xx",
 	"qcom,ipq8062",
 	"qcom,ipq8064",
 	"qcom,msm8660-surf",
-- 
1.8.2.1