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From: Alexander Shiyan <shc_work@mail.ru>
To: linux-arm-kernel@lists.infradead.org
Cc: Alexander Shiyan <shc_work@mail.ru>,
	Russell King <linux@armlinux.org.uk>,
	NXP Linux Team <linux-imx@nxp.com>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <fabio.estevam@nxp.com>,
	Shawn Guo <shawnguo@kernel.org>
Subject: [PATCH 2/6] ARM i.MX21: Add devicetree support
Date: Sat, 22 Dec 2018 13:51:56 +0300	[thread overview]
Message-ID: <20181222105200.18502-2-shc_work@mail.ru> (raw)
In-Reply-To: <20181222105200.18502-1-shc_work@mail.ru>

This patch adds basic devicetree support for i.MX21 based SoCs.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
 arch/arm/mach-imx/Kconfig      |  7 +++++++
 arch/arm/mach-imx/Makefile     |  1 +
 arch/arm/mach-imx/mach-imx21.c | 31 +++++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 arch/arm/mach-imx/mach-imx21.c

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index abc3371..abf3c0d 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -91,6 +91,13 @@ config MACH_MX21ADS
 	  Include support for MX21ADS platform. This includes specific
 	  configurations for the board and its peripherals.
 
+config MACH_IMX21_DT
+	bool "Support i.MX21 platforms from device tree"
+	select SOC_IMX21
+	help
+	  Include support for Freescale i.MX21 based platforms
+	  using the device tree for discovery
+
 comment "MX27 platforms:"
 
 config MACH_MX27ADS
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index bae179a..52a9138 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -38,6 +38,7 @@ endif
 
 # i.MX21 based machines
 obj-$(CONFIG_MACH_MX21ADS) += mach-mx21ads.o
+obj-$(CONFIG_MACH_IMX21_DT) += mach-imx21.o
 
 # i.MX27 based machines
 obj-$(CONFIG_MACH_MX27ADS) += mach-mx27ads.o
diff --git a/arch/arm/mach-imx/mach-imx21.c b/arch/arm/mach-imx/mach-imx21.c
new file mode 100644
index 0000000..7eb7de0
--- /dev/null
+++ b/arch/arm/mach-imx/mach-imx21.c
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Author: Alexander Shiyan <shc_work@mail.ru> */
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <linux/of_platform.h>
+
+#include "common.h"
+#include "hardware.h"
+
+#define MX21_AVIC_ADDR	0x10040000
+
+static void __init imx21_init_irq(void)
+{
+	void __iomem *avic = ioremap(MX21_AVIC_ADDR, SZ_4K);
+
+	WARN_ON(!avic);
+
+	mxc_init_irq(avic);
+}
+
+static const char * const imx21_dt_board_compat[] __initconst = {
+	"fsl,imx21",
+	NULL
+};
+
+DT_MACHINE_START(IMX21_DT, "Freescale i.MX21 (Device Tree Support)")
+	.init_early	= imx21_init_early,
+	.init_irq	= imx21_init_irq,
+	.dt_compat	= imx21_dt_board_compat,
+MACHINE_END
-- 
2.10.2


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  reply	other threads:[~2018-12-22 10:52 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-22 10:51 [PATCH 1/6] ARM: dts: imx21: add i.MX21 SoC device tree Alexander Shiyan
2018-12-22 10:51 ` Alexander Shiyan [this message]
2019-01-12  2:53   ` [PATCH 2/6] ARM i.MX21: Add devicetree support Shawn Guo
2019-01-12  5:17     ` Alexander Shiyan
2019-01-12  7:04       ` Shawn Guo
2018-12-22 10:51 ` [PATCH 3/6] ARM: dts: imx21: Add support for the i.MX21 Freescale ADS board Alexander Shiyan
2018-12-22 10:51 ` [PATCH 4/6] ARM: i.MX: Remove i.MX21 Freescale ADS board support Alexander Shiyan
2018-12-22 10:51 ` [PATCH 5/6] ARM: i.MX: Move SOC_IMX21 into 'Device tree only' Alexander Shiyan
2018-12-22 10:52 ` [PATCH 6/6] ARM: i.MX: Remove i.MX21 non-DT device registration helpers Alexander Shiyan

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