linux-kernel - [PATCH v8 1/7] ARM: imx: Add initial support for i.MXRT10xx family

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Date:   Tue, 11 Jan 2022 16:54:09 -0500
From:   Jesse Taube <mr.bossman075@...il.com>
To:     linux-imx@....com
Cc:     mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, ulf.hansson@...aro.org, aisheng.dong@....com,
        stefan@...er.ch, linus.walleij@...aro.org,
        gregkh@...uxfoundation.org, arnd@...db.de, olof@...om.net,
        soc@...nel.org, linux@...linux.org.uk, abel.vesa@....com,
        adrian.hunter@...el.com, jirislaby@...nel.org,
        giulio.benetti@...ettiengineering.com,
        nobuhiro1.iwamatsu@...hiba.co.jp, Mr.Bossman075@...il.com,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-serial@...r.kernel.org
Subject: [PATCH v8 1/7] ARM: imx: Add initial support for i.MXRT10xx family

From: Giulio Benetti <giulio.benetti@...ettiengineering.com>

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@...ettiengineering.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@...il.com>
[Jesse: removed SOC_IMXRT's 'depends on ARCH_MULTI_V7' and 'select
ARM_GIC if ARCH_MULTI_V7']
---
V1->V2:
* Remove depends ARCH_MULTI_V7
* Remove select PINCTRL_IMXRT
* Change commit description
V2->V3:
* Nothing done
V3->V4:
* Nothing done
V4->V5:
* Nothing done
V5->V6:
* Nothing done
V6->V7:
* Nothing done
V7->V8:
* Nothing done
---
 arch/arm/mach-imx/Kconfig      |  7 +++++++
 arch/arm/mach-imx/Makefile     |  2 ++
 arch/arm/mach-imx/mach-imxrt.c | 19 +++++++++++++++++++
 3 files changed, 28 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..5ad3a8b9b4b6 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -239,6 +239,13 @@ 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
+	select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M
+	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@...ettiengineering.com>
+ */
+
+#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
-- 
2.34.1