On Mon, Nov 26, 2012 at 05:34:59PM +0900, Tetsuyuki Kobayashi wrote:

Hello Simon-san,

(2012/11/26 9:16), Simon Horman wrote:

quoted

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 devices using device tree
   - ST1232 (Touchscreen)
   - MMCIF (MMC)
   - SDHI (MMC)
* Does not bring up the INTC interrupt controller at all,
   thus external devices 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.

Signed-off-by: Simon Horman <horms@verge.net.au>
---
  arch/arm/boot/dts/Makefile                     |    3 +-
  arch/arm/boot/dts/sh73a0-kzm9g-reference.dts   |  153 ++++++++++++++++++++++++
  arch/arm/mach-shmobile/Kconfig                 |   10 ++
  arch/arm/mach-shmobile/Makefile                |    8 +-
  arch/arm/mach-shmobile/board-kzm9g-reference.c |  142 ++++++++++++++++++++++
  5 files changed, 314 insertions(+), 2 deletions(-)
  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 c1ce813..b6c4fa2 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile

@@ -75,7 +75,8 @@ 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..978892a
--- /dev/null
+++ b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts

@@ -0,0 +1,153 @@
+/*
+ * 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/ "skeleton.dtsi"
+
+/ {
+	model = "KZM-A9-GT";
+	compatible = "renesas,kzm9g-reference", "renesas,sh73a0";
+
+	memory {
+		device_type = "memory";
+		reg = <0x41000000 0x1e800000>;
+	};
+
+	gic: interrupt-controller at f0001000 {
+		compatible = "arm,cortex-a9-gic";
+		#interrupt-cells = <3>;
+		#address-cells = <1>;
+		interrupt-controller;
+		reg = <0xf0001000 0x1000>,
+		      <0xf0000100 0x100>;
+	};
+
+	i2c0: i2c at 0xe6820000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "renesas,rmobile-iic";
+		reg = <0xe6820000 0x425>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 167 0x4
+			      0 170 0x4>;
+	};

I reported /dev/i2c-0 seems not working. I found the reason.
About i2c0 interrupt, it should be:

 		interrupts = <0 167 0x4
			      0 168 0x4
			      0 169 0x4
 			      0 170 0x4>;

The same as i2c1 - ic24. There are 4 interrupts each.

Thanks, sorry for missing that the first time around.