* [PATCH 3/6] ARM: mach-shmobile: sh73a0: Minimal setup using DT
2012-12-11 3:07 [PATCH 0/6 v3] ARM: mach-shmobile: kzm9g: Reference DT implementation Simon Horman
2012-12-11 3:07 ` [PATCH 1/6] ARM: clocksource: Initialise early Simon Horman
2012-12-11 3:07 ` [PATCH 2/6] ARM: mach-shmobile: sh73a0: Allow initialisation of GIC by DT Simon Horman
@ 2012-12-11 3:07 ` Simon Horman
2012-12-11 3:07 ` [PATCH 4/6] ARM: mach-shmobile: sh73a0: Initialise MMCIF " Simon Horman
` (2 subsequent siblings)
5 siblings, 0 replies; 9+ messages in thread
From: Simon Horman @ 2012-12-11 3:07 UTC (permalink / raw)
To: linux-arm-kernel
Allow a minimal setup of the sh73a0 SoC using a flattened device tree.
In particular, Configure the i2c controllers using a flattened device tree.
SCI serial controller and CMT clock source, whose drivers do not yet
support configuration using a flattened device tree, are still configured
using C code in order to allow booting of a board with this SoC.
*** Please note that the clock initialisation shcheme used in
this patch does not currently work with SMP as there
is a yet to be resolved lock-up in workqueue initialisation.
CONFIG_SMP must be disabled when using this code. ***
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
v3
* Late initialisation of clocks
* Add DT_MACHINE_START()
* Add comment about duplicate entries in clock-sh73a0.c:lookups[]
v2
* Add extra entries to clock-sh73a0.c:lookups[] and
remove auxdata. Ultimtely the clocks will be described
in DT, but the code isn't there yet.
* Use shmobile_setup_delay() and perform late initialisation of clocks
---
arch/arm/boot/dts/sh73a0.dtsi | 60 +++++++++++++++++++++++
arch/arm/mach-shmobile/clock-sh73a0.c | 12 +++++
arch/arm/mach-shmobile/include/mach/common.h | 2 +
arch/arm/mach-shmobile/setup-sh73a0.c | 68 +++++++++++++++++++++++++-
4 files changed, 141 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi
index 77c8e43..fc7f0fd 100644
--- a/arch/arm/boot/dts/sh73a0.dtsi
+++ b/arch/arm/boot/dts/sh73a0.dtsi
@@ -38,4 +38,64 @@
reg = <0xf0001000 0x1000>,
<0xf0000100 0x100>;
};
+
+ i2c0: i2c@0xe6820000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,rmobile-iic";
+ reg = <0xe6820000 0x425>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 167 0x4
+ 0 168 0x4
+ 0 169 0x4
+ 0 170 0x4>;
+ };
+
+ i2c1: i2c@0xe6822000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,rmobile-iic";
+ reg = <0xe6822000 0x425>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 51 0x4
+ 0 52 0x4
+ 0 53 0x4
+ 0 54 0x4>;
+ };
+
+ i2c2: i2c@0xe6824000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,rmobile-iic";
+ reg = <0xe6824000 0x425>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 171 0x4
+ 0 172 0x4
+ 0 173 0x4
+ 0 174 0x4>;
+ };
+
+ i2c3: i2c@0xe6826000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,rmobile-iic";
+ reg = <0xe6826000 0x425>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 183 0x4
+ 0 184 0x4
+ 0 185 0x4
+ 0 186 0x4>;
+ };
+
+ i2c4: i2c@0xe6828000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,rmobile-iic";
+ reg = <0xe6828000 0x425>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 187 0x4
+ 0 188 0x4
+ 0 189 0x4
+ 0 190 0x4>;
+ };
};
diff --git a/arch/arm/mach-shmobile/clock-sh73a0.c b/arch/arm/mach-shmobile/clock-sh73a0.c
index 516ff7f..22af74f2 100644
--- a/arch/arm/mach-shmobile/clock-sh73a0.c
+++ b/arch/arm/mach-shmobile/clock-sh73a0.c
@@ -525,6 +525,13 @@ static struct clk mstp_clks[MSTP_NR] = {
[MSTP403] = MSTP(&r_clk, SMSTPCR4, 3, 0), /* KEYSC */
};
+/* The lookups structure below includes duplicate entries for some clocks
+ * with alternate names.
+ * - The traditional name used when a device is initialised with platform data
+ * - The name used when a device is initialised using device tree
+ * The longer-term aim is to remove these duplicates, and indeed the
+ * lookups table entirely, by describing clocks using device tree.
+ */
static struct clk_lookup lookups[] = {
/* main clocks */
CLKDEV_CON_ID("r_clk", &r_clk),
@@ -545,6 +552,7 @@ static struct clk_lookup lookups[] = {
/* MSTP32 clocks */
CLKDEV_DEV_ID("i2c-sh_mobile.2", &mstp_clks[MSTP001]), /* I2C2 */
+ CLKDEV_DEV_ID("e6824000.i2c", &mstp_clks[MSTP001]), /* I2C2 */
CLKDEV_DEV_ID("sh_mobile_ceu.1", &mstp_clks[MSTP129]), /* CEU1 */
CLKDEV_DEV_ID("sh-mobile-csi2.1", &mstp_clks[MSTP128]), /* CSI2-RX1 */
CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[MSTP127]), /* CEU0 */
@@ -553,6 +561,7 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP125]), /* TMU01 */
CLKDEV_DEV_ID("sh-mipi-dsi.0", &mstp_clks[MSTP118]), /* DSITX */
CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[MSTP116]), /* I2C0 */
+ CLKDEV_DEV_ID("e6820000.i2c", &mstp_clks[MSTP116]), /* I2C0 */
CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[MSTP100]), /* LCDC0 */
CLKDEV_DEV_ID("sh-sci.7", &mstp_clks[MSTP219]), /* SCIFA7 */
CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[MSTP218]), /* SY-DMAC */
@@ -569,6 +578,7 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh_fsi2", &mstp_clks[MSTP328]), /* FSI */
CLKDEV_DEV_ID("sh_irda.0", &mstp_clks[MSTP325]), /* IrDA */
CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), /* I2C1 */
+ CLKDEV_DEV_ID("e6822000.i2c", &mstp_clks[MSTP323]), /* I2C1 */
CLKDEV_DEV_ID("renesas_usbhs", &mstp_clks[MSTP322]), /* USB */
CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
@@ -579,7 +589,9 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("leds-renesas-tpu.30", &mstp_clks[MSTP301]), /* TPU3 */
CLKDEV_DEV_ID("leds-renesas-tpu.41", &mstp_clks[MSTP300]), /* TPU4 */
CLKDEV_DEV_ID("i2c-sh_mobile.3", &mstp_clks[MSTP411]), /* I2C3 */
+ CLKDEV_DEV_ID("e6826000.i2c", &mstp_clks[MSTP411]), /* I2C3 */
CLKDEV_DEV_ID("i2c-sh_mobile.4", &mstp_clks[MSTP410]), /* I2C4 */
+ CLKDEV_DEV_ID("e6828000.i2c", &mstp_clks[MSTP410]), /* I2C4 */
CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[MSTP403]), /* KEYSC */
};
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index b50447e..06b905e 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -52,7 +52,9 @@ extern void sh73a0_init_irq(void);
extern void sh73a0_init_irq_dt(void);
extern void sh73a0_map_io(void);
extern void sh73a0_add_early_devices(void);
+extern void sh73a0_add_early_devices_dt(void);
extern void sh73a0_add_standard_devices(void);
+extern void sh73a0_add_standard_devices_dt(void);
extern void sh73a0_clock_init(void);
extern void sh73a0_pinmux_init(void);
extern struct clk sh73a0_extal1_clk;
diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index eab1bae..dcf467b 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -23,6 +23,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
+#include <linux/of_platform.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/io.h>
@@ -35,6 +36,7 @@
#include <mach/irqs.h>
#include <mach/sh73a0.h>
#include <mach/common.h>
+#include <asm/hardware/gic.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>
#include <asm/mach/arch.h>
@@ -779,7 +781,7 @@ static struct platform_device pmu_device = {
.resource = pmu_resources,
};
-static struct platform_device *sh73a0_early_devices[] __initdata = {
+static struct platform_device *sh73a0_early_devices_dt[] __initdata = {
&scif0_device,
&scif1_device,
&scif2_device,
@@ -790,6 +792,9 @@ static struct platform_device *sh73a0_early_devices[] __initdata = {
&scif7_device,
&scif8_device,
&cmt10_device,
+};
+
+static struct platform_device *sh73a0_early_devices[] __initdata = {
&tmu00_device,
&tmu01_device,
};
@@ -812,6 +817,8 @@ void __init sh73a0_add_standard_devices(void)
/* Clear software reset bit on SY-DMAC module */
__raw_writel(__raw_readl(SRCR2) & ~(1 << 18), SRCR2);
+ platform_add_devices(sh73a0_early_devices_dt,
+ ARRAY_SIZE(sh73a0_early_devices_dt));
platform_add_devices(sh73a0_early_devices,
ARRAY_SIZE(sh73a0_early_devices));
platform_add_devices(sh73a0_late_devices,
@@ -830,6 +837,8 @@ static void __init sh73a0_earlytimer_init(void)
void __init sh73a0_add_early_devices(void)
{
+ early_platform_add_devices(sh73a0_early_devices_dt,
+ ARRAY_SIZE(sh73a0_early_devices_dt));
early_platform_add_devices(sh73a0_early_devices,
ARRAY_SIZE(sh73a0_early_devices));
@@ -839,3 +848,60 @@ void __init sh73a0_add_early_devices(void)
/* override timer setup with soc-specific code */
shmobile_timer.init = sh73a0_earlytimer_init;
}
+
+#ifdef CONFIG_USE_OF
+
+/* Please note that the clock initialisation shcheme used in
+ * sh73a0_add_early_devices_dt() and sh73a0_add_standard_devices_dt()
+ * does not work with SMP as there is a yet to be resolved lock-up in
+ * workqueue initialisation.
+ *
+ * CONFIG_SMP should be disabled when using this code.
+ */
+
+static const struct of_dev_auxdata sh73a0_auxdata_lookup[] __initconst = {
+ {},
+};
+
+void __init sh73a0_add_early_devices_dt(void)
+{
+ shmobile_setup_delay(1196, 44, 46); /* Cortex-A9 @ 1196MHz */
+
+ early_platform_add_devices(sh73a0_early_devices_dt,
+ ARRAY_SIZE(sh73a0_early_devices_dt));
+
+ /* setup early console here as well */
+ shmobile_setup_console();
+}
+
+static const struct of_dev_auxdata sh73a0_auxdata_lookup[] __initconst = {
+ {},
+};
+
+void __init sh73a0_add_standard_devices_dt(void)
+{
+ /* clocks are setup late during boot in the case of DT */
+ sh73a0_clock_init();
+
+ platform_add_devices(sh73a0_early_devices_dt,
+ ARRAY_SIZE(sh73a0_early_devices_dt));
+ of_platform_populate(NULL, of_default_bus_match_table,
+ sh73a0_auxdata_lookup, NULL);
+}
+
+static const char *sh73a0_boards_compat_dt[] __initdata = {
+ "renesas,sh73a0",
+ NULL,
+};
+
+DT_MACHINE_START(SH73A0_DT, "Generic SH73A0 (Flattened Device Tree)")
+ .map_io = sh73a0_map_io,
+ .init_early = sh73a0_add_early_devices_dt,
+ .nr_irqs = NR_IRQS_LEGACY,
+ .init_irq = sh73a0_init_irq_dt,
+ .handle_irq = gic_handle_irq,
+ .init_machine = sh73a0_add_standard_devices_dt,
+ .timer = &shmobile_timer,
+ .dt_compat = sh73a0_boards_compat_dt,
+MACHINE_END
+#endif /* CONFIG_USE_OF */
--
1.7.10.4
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH 6/6] ARM: mach-shmobile: kzm9g: Reference DT implementation
2012-12-11 3:07 [PATCH 0/6 v3] ARM: mach-shmobile: kzm9g: Reference DT implementation Simon Horman
` (4 preceding siblings ...)
2012-12-11 3:07 ` [PATCH 5/6] ARM: mach-shmobile: kzm9g: use voltage regulators by default Simon Horman
@ 2012-12-11 3:07 ` Simon Horman
5 siblings, 0 replies; 9+ messages in thread
From: Simon Horman @ 2012-12-11 3:07 UTC (permalink / raw)
To: linux-arm-kernel
Provide alternate board code for the kzm9g to demonstrate
how DT may be used given the current state of driver
device tree support. This is intended to act as a reference
for mach-shmobile developers.
Some notes:
* Brings up the GIC interrupt handler using device tree
* Brings up the following device using device tree:
- MMCIF (MMC)
* Does not bring up the INTC interrupt controller at all,
thus external devices may not be used. In particular,
the SMSC ethernet device may not be used and thus
NFS root may not be used.
* Uses existing C code and not device tree to initialise the following,
which are needed for a working board:
- SCIF (Serial)
- CMT (Clock)
- PFC (GPIO)
To use this alternate board code instead of the normal board code,
CONFIG_MACH_KZM9G_REFERENCE should be selected in the kernel config.
And the sh73a0-kzm9g-reference.dtb flattened device tree blob should be used.
*** Please note that the clock initialisation shcheme used in
this patch does not currently work with SMP as there
is a yet to be resolved lock-up in workqueue initialisation.
CONFIG_SMP must be disabled when using this code. ***
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
v3
* Compile board-kzm9g.c even if CONFIG_MACH_KZM9G_REFERENCE is selected,
it can co-exist with board-kzm9g-reference.c
v2
* Do not initialise touchscreen, it requires the INTC interrupt controller
but for now this configuration only has the GIC interrupt controller.
* Define mmcif and sdhi in SoC dtsi and reference in board dts.
* Do not initialise SDHI, the driver needs to be updated
---
arch/arm/boot/dts/Makefile | 3 +-
arch/arm/boot/dts/sh73a0-kzm9g-reference.dts | 37 +++++++++
arch/arm/mach-shmobile/Kconfig | 10 +++
arch/arm/mach-shmobile/Makefile | 1 +
arch/arm/mach-shmobile/board-kzm9g-reference.c | 99 ++++++++++++++++++++++++
5 files changed, 149 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/dts/sh73a0-kzm9g-reference.dts
create mode 100644 arch/arm/mach-shmobile/board-kzm9g-reference.c
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index f37cf9f..c606375 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -77,7 +77,8 @@ dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb
dtb-$(CONFIG_ARCH_U8500) += snowball.dtb
dtb-$(CONFIG_ARCH_SHMOBILE) += emev2-kzm9d.dtb \
r8a7740-armadillo800eva.dtb \
- sh73a0-kzm9g.dtb
+ sh73a0-kzm9g.dtb \
+ sh73a0-kzm9g-reference.dtb
dtb-$(CONFIG_ARCH_SPEAR13XX) += spear1310-evb.dtb \
spear1340-evb.dtb
dtb-$(CONFIG_ARCH_SPEAR3XX)+= spear300-evb.dtb \
diff --git a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts
new file mode 100644
index 0000000..588016e
--- /dev/null
+++ b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts
@@ -0,0 +1,37 @@
+/*
+ * Device Tree Source for the KZM-A9-GT board
+ *
+ * Copyright (C) 2012 Horms Solutions Ltd.
+ *
+ * Based on sh73a0-kzm9g.dts
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+/dts-v1/;
+/include/ "sh73a0-reference.dtsi"
+
+/ {
+ model = "KZM-A9-GT";
+ compatible = "renesas,kzm9g-reference", "renesas,sh73a0";
+
+ memory {
+ device_type = "memory";
+ reg = <0x41000000 0x1e800000>;
+ };
+
+ fixedregulator1v8: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "fixed-1.8V";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+};
+
+&mmcif {
+ vmmc-supply = <&fixedregulator1v8>;
+ vqmmc-supply = <&fixedregulator1v8>;
+};
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 8ae100c..ca95c2b 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -136,6 +136,16 @@ config MACH_KZM9G
select SND_SOC_AK4642 if SND_SIMPLE_CARD
select USE_OF
+config MACH_KZM9G_REFERENCE
+ bool "KZM-A9-GT board - Reference Device Tree Implementation"
+ depends on MACH_KZM9G
+ ---help---
+ Use reference implementation of KZM-A9-GT board support
+ which makes as greater use of device tree at the expense
+ of not supporting a number of devices.
+
+ This is intended to aid developers
+
comment "SH-Mobile System Configuration"
config CPU_HAS_INTEVT
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index e3556c6..b4d3920 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_MACH_MARZEN) += board-marzen.o
obj-$(CONFIG_MACH_ARMADILLO800EVA) += board-armadillo800eva.o
obj-$(CONFIG_MACH_KZM9D) += board-kzm9d.o
obj-$(CONFIG_MACH_KZM9G) += board-kzm9g.o
+obj-$(CONFIG_MACH_KZM9G_REFERENCE) += board-kzm9g-reference.o
# Framework support
obj-$(CONFIG_SMP) += $(smp-y)
diff --git a/arch/arm/mach-shmobile/board-kzm9g-reference.c b/arch/arm/mach-shmobile/board-kzm9g-reference.c
new file mode 100644
index 0000000..140781c
--- /dev/null
+++ b/arch/arm/mach-shmobile/board-kzm9g-reference.c
@@ -0,0 +1,99 @@
+/*
+ * KZM-A9-GT board support - Reference Device Tree Implementation
+ *
+ * Copyright (C) 2012 Horms Solutions Ltd.
+ *
+ * Based on board-kzm9g.c
+ * Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/input.h>
+#include <linux/of_platform.h>
+#include <mach/sh73a0.h>
+#include <mach/common.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/hardware/gic.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+static void __init kzm_init(void)
+{
+ /* enable SCIFA4 */
+ gpio_request(GPIO_FN_SCIFA4_TXD, NULL);
+ gpio_request(GPIO_FN_SCIFA4_RXD, NULL);
+ gpio_request(GPIO_FN_SCIFA4_RTS_, NULL);
+ gpio_request(GPIO_FN_SCIFA4_CTS_, NULL);
+
+ /* enable MMCIF */
+ gpio_request(GPIO_FN_MMCCLK0, NULL);
+ gpio_request(GPIO_FN_MMCCMD0_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_0_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_1_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_2_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_3_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_4_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_5_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_6_PU, NULL);
+ gpio_request(GPIO_FN_MMCD0_7_PU, NULL);
+
+ /* I2C 3 */
+ gpio_request(GPIO_FN_PORT27_I2C_SCL3, NULL);
+ gpio_request(GPIO_FN_PORT28_I2C_SDA3, NULL);
+
+#ifdef CONFIG_CACHE_L2X0
+ /* Early BRESP enable, Shared attribute override enable, 64K*8way */
+ l2x0_init(IOMEM(0xf0100000), 0x40460000, 0x82000fff);
+#endif
+
+ sh73a0_add_standard_devices_dt();
+}
+
+static void kzm9g_restart(char mode, const char *cmd)
+{
+#define RESCNT2 IOMEM(0xe6188020)
+ /* Do soft power on reset */
+ writel((1 << 31), RESCNT2);
+}
+
+static const char *kzm9g_boards_compat_dt[] __initdata = {
+ "renesas,kzm9g-reference",
+ NULL,
+};
+
+/* Please note that the clock initialisation shcheme used in
+ * sh73a0_add_early_devices_dt() and sh73a0_add_standard_devices_dt()
+ * does not work with SMP as there is a yet to be resolved lock-up in
+ * workqueue initialisation.
+ *
+ * CONFIG_SMP should be disabled when using this code.
+ */
+DT_MACHINE_START(KZM9G_DT, "kzm9g-reference")
+ .smp = smp_ops(sh73a0_smp_ops),
+ .map_io = sh73a0_map_io,
+ .init_early = sh73a0_add_early_devices_dt,
+ .nr_irqs = NR_IRQS_LEGACY,
+ .init_irq = sh73a0_init_irq_dt,
+ .handle_irq = gic_handle_irq,
+ .init_machine = kzm_init,
+ .init_late = shmobile_init_late,
+ .timer = &shmobile_timer,
+ .restart = kzm9g_restart,
+ .dt_compat = kzm9g_boards_compat_dt,
+MACHINE_END
--
1.7.10.4
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