[PATCH 01/13] ARM: imx: add initial support for i.MXRT10xx family

[Jesse Taube <mr.bossman075@xxxxxxxxx>]

From: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx>

The i.MXRT10xx family of processors features NXP's implementation of the
Arm Cortex-M7 core and in some case the Arm Cortex-M4 core too.

This patch aims to add an initial support for imxrt.

Signed-off-by: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jesse Taube <Mr.Bossman075@xxxxxxxxx>
---
 arch/arm/mach-imx/Kconfig      |  9 +++++++++
 arch/arm/mach-imx/Makefile     |  2 ++
 arch/arm/mach-imx/mach-imxrt.c | 19 +++++++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 arch/arm/mach-imx/mach-imxrt.c

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index b407b024dde3..fd190c8e0c99 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -239,6 +239,15 @@ config SOC_IMX7ULP
 	help
 	  This enables support for Freescale i.MX7 Ultra Low Power processor.
 
+config SOC_IMXRT
+	bool "i.MXRT support"
+	depends on ARM_SINGLE_ARMV7M || ARCH_MULTI_V7
+	select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M
+	select ARM_GIC if ARCH_MULTI_V7
+	select PINCTRL_IMXRT
+	help
+	  This enables support for Freescale i.MXRT Crossover processor.
+
 config SOC_VF610
 	bool "Vybrid Family VF610 support"
 	select ARM_GIC if ARCH_MULTI_V7
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index d1506ef7a537..3b1145722a44 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -65,6 +65,8 @@ obj-$(CONFIG_SOC_IMX50) += mach-imx50.o
 obj-$(CONFIG_SOC_IMX51) += mach-imx51.o
 obj-$(CONFIG_SOC_IMX53) += mach-imx53.o
 
+obj-$(CONFIG_SOC_IMXRT) += mach-imxrt.o
+
 obj-$(CONFIG_SOC_VF610) += mach-vf610.o
 
 obj-$(CONFIG_SOC_LS1021A) += mach-ls1021a.o
diff --git a/arch/arm/mach-imx/mach-imxrt.c b/arch/arm/mach-imx/mach-imxrt.c
new file mode 100644
index 000000000000..2063a3059c84
--- /dev/null
+++ b/arch/arm/mach-imx/mach-imxrt.c
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019
+ * Author(s): Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/kernel.h>
+#include <asm/mach/arch.h>
+#include <asm/v7m.h>
+
+static const char *const imxrt_compat[] __initconst = {
+	"fsl,imxrt1050",
+	NULL
+};
+
+DT_MACHINE_START(IMXRTDT, "IMXRT (Device Tree Support)")
+	.dt_compat = imxrt_compat,
+	.restart = armv7m_restart,
+MACHINE_END
-- 
2.33.0