Subject: [PATCHv3] ARM: kirkwood: Add support for NETGEAR ReadyNAS Duo v2 using DT

From: [email-masked] (Arnaud Ebalard)
Date: Tue, 19 Mar 2013 23:28:06 +0100

Hi,

Add support for NETGEAR ReadyNAS Duo v2 (Hardware specs available
here: http://natisbad.org/NAS/). Almost everything is supported via
provided .dts. A board-readynas.c file is nonetheless required for
device not only converted to DT (Gbit controller).

FWIW, the most noticeable lack regarding hardware support is the fan
controller (GMT G762) for which nothing is currently available
upstream.

Changes since v2:
 - tried and respect alphabetical order where possible in additions
 - removed useless inclusion of io.h and delay.h in board-readynas.c

Changes since v1:
 - More specific compatible string in dts
 - Moved declaration to keep dts Makefile in alphabetical order
 - Removed unneeded mdelay() for USB power on
 - Switched to fixed regulator in .dts for USB power on

Signed-off-by: Arnaud Ebalard <[email-masked]>
Tested-By: Arnaud Ebalard <[email-masked]>
---

A previous version of the patch has been tested against 3.8.3 and the
one below against current arm tree (current head of rmk/for-next).

 arch/arm/boot/dts/Makefile                         |    1 +
 .../boot/dts/kirkwood-netgear_readynas_duo_v2.dts  |  180 ++++++++++++++++++++
 arch/arm/configs/kirkwood_defconfig                |    1 +
 arch/arm/mach-kirkwood/Kconfig                     |    9 +
 arch/arm/mach-kirkwood/Makefile                    |    1 +
 arch/arm/mach-kirkwood/board-dt.c                  |    4 +
 arch/arm/mach-kirkwood/board-readynas.c            |   28 +++
 arch/arm/mach-kirkwood/common.h                    |    6 +
 8 files changed, 230 insertions(+)
 create mode 100644 arch/arm/boot/dts/kirkwood-netgear_readynas_duo_v2.dts
 create mode 100644 arch/arm/mach-kirkwood/board-readynas.c

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9c62558..125211d 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -65,6 +65,7 @@ dtb-$(CONFIG_ARCH_KIRKWOOD) += kirkwood-dns320.dtb \
 	kirkwood-lschlv2.dtb \
 	kirkwood-lsxhl.dtb \
 	kirkwood-mplcec4.dtb \
+	kirkwood-netgear_readynas_duo_v2.dtb \
 	kirkwood-ns2.dtb \
 	kirkwood-ns2lite.dtb \
 	kirkwood-ns2max.dtb \
diff --git a/arch/arm/boot/dts/kirkwood-netgear_readynas_duo_v2.dts b/arch/arm/boot/dts/kirkwood-netgear_readynas_duo_v2.dts
new file mode 100644
index 0000000..3756e5c
--- /dev/null
+++ b/arch/arm/boot/dts/kirkwood-netgear_readynas_duo_v2.dts
@@ -0,0 +1,180 @@
+/dts-v1/;
+
+/include/ "kirkwood.dtsi"
+/include/ "kirkwood-6282.dtsi"
+
+/ {
+	model = "NETGEAR ReadyNAS Duo v2";
+	compatible = "netgear,readynas-duo-v2", "netgear,readynas", "marvell,kirkwood-88f6282", "marvell,kirkwood";
+
+	memory { /* 256 MB */
+		device_type = "memory";
+		reg = <0x00000000 0x10000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8 earlyprintk";
+	};
+
+	ocp at f1000000 {
+		pinctrl: pinctrl at 10000 {
+
+			pinctrl-0 = < &pmx_uart0
+				      &pmx_button_power
+				      &pmx_button_backup
+				      &pmx_button_reset
+				      &pmx_led_blue_power
+				      &pmx_led_blue_activity
+				      &pmx_led_blue_disk1
+				      &pmx_led_blue_disk2
+				      &pmx_led_blue_backup >;
+			pinctrl-names = "default";
+
+			pmx_button_power: pmx-button-power {
+				marvell,pins = "mpp47";
+				marvell,function = "gpio";
+			};
+			pmx_button_backup: pmx-button-backup {
+				marvell,pins = "mpp45";
+				marvell,function = "gpio";
+			};
+			pmx_button_reset: pmx-button-reset {
+				marvell,pins = "mpp13";
+				marvell,function = "gpio";
+			};
+			pmx_led_blue_power: pmx-led-blue-power {
+				marvell,pins = "mpp31";
+				marvell,function = "gpio";
+			};
+			pmx_led_blue_activity: pmx-led-blue-activity {
+				marvell,pins = "mpp38";
+				marvell,function = "gpio";
+			};
+			pmx_led_blue_disk1: pmx-led-blue-disk1 {
+				marvell,pins = "mpp23";
+				marvell,function = "gpio";
+			};
+			pmx_led_blue_disk2: pmx-led-blue-disk2 {
+				marvell,pins = "mpp22";
+				marvell,function = "gpio";
+			};
+			pmx_led_blue_backup: pmx-led-blue-backup {
+				marvell,pins = "mpp29";
+				marvell,function = "gpio";
+			};
+		};
+
+		i2c at 11000 {
+			status = "okay";
+
+			rs5c372a: rs5c372a at 32 {
+				compatible = "ricoh,rs5c372a";
+				reg = <0x32>;
+			};
+		};
+
+		serial at 12000 {
+			status = "okay";
+		};
+
+		nand at 3000000 {
+			status = "okay";
+
+			partition at 0 {
+				label = "u-boot";
+				reg = <0x0000000 0x180000>;
+				read-only;
+			};
+
+			partition at 180000 {
+				label = "u-boot-env";
+				reg = <0x180000 0x20000>;
+			};
+
+			partition at 200000 {
+				label = "uImage";
+				reg = <0x0200000 0x600000>;
+			};
+
+			partition at 800000 {
+				label = "minirootfs";
+				reg = <0x0800000 0x1000000>;
+			};
+
+			partition at 1800000 {
+				label = "jffs2";
+				reg = <0x1800000 0x6800000>;
+			};
+		};
+
+		sata at 80000 {
+			status = "okay";
+			nr-ports = <2>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power_led {
+			label = "status:blue:power_led";
+			gpios = <&gpio0 31 1>;   /* GPIO 31 Active Low */
+			linux,default-trigger = "default-on";
+		};
+		activity_led {
+			label = "status:blue:activity_led";
+			gpios = <&gpio1 6 1>;    /* GPIO 38 Active Low */
+		};
+		disk1_led {
+			label = "status:blue:disk1_led";
+			gpios = <&gpio0 23 1>;   /* GPIO 23 Active Low */
+		};
+		disk2_led {
+			label = "status:blue:disk2_led";
+			gpios = <&gpio0 22 1>;   /* GPIO 22 Active Low */
+		};
+		backup_led {
+			label = "status:blue:backup_led";
+			gpios = <&gpio0 29 1>;   /* GPIO 29 Active Low*/
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		button at 1 {
+			label = "Power Button";
+			linux,code = <116>;     /* KEY_POWER */
+			gpios = <&gpio1 15 1>;
+		};
+		button at 2 {
+			label = "Reset Button";
+			linux,code = <0x198>;   /* KEY_RESTART */
+			gpios = <&gpio0 13 1>;
+		};
+		button at 3 {
+			label = "Backup Button";
+			linux,code = <133>;     /* KEY_COPY */
+			gpios = <&gpio1 13 1>;
+		};
+	};
+
+        regulators {
+                compatible = "simple-bus";
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                usb_power: regulator at 1 {
+                        compatible = "regulator-fixed";
+                        reg = <1>;
+                        regulator-name = "USB 3.0 Power";
+                        regulator-min-microvolt = <5000000>;
+                        regulator-max-microvolt = <5000000>;
+                        enable-active-high;
+                        regulator-always-on;
+                        regulator-boot-on;
+                        gpio = <&gpio1 14 0>;
+                };
+        };
+};
diff --git a/arch/arm/configs/kirkwood_defconfig b/arch/arm/configs/kirkwood_defconfig
index 13482ea..9eb9f48 100644
--- a/arch/arm/configs/kirkwood_defconfig
+++ b/arch/arm/configs/kirkwood_defconfig
@@ -34,6 +34,7 @@ CONFIG_MACH_NETSPACE_MAX_V2_DT=y
 CONFIG_MACH_NETSPACE_LITE_V2_DT=y
 CONFIG_MACH_NETSPACE_MINI_V2_DT=y
 CONFIG_MACH_OPENBLOCKS_A6_DT=y
+CONFIG_MACH_READYNAS_DT=y
 CONFIG_MACH_TOPKICK_DT=y
 CONFIG_MACH_TS219=y
 CONFIG_MACH_TS41X=y
diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index 7b6a64b..3fd07eb 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -194,6 +194,15 @@ config MACH_OPENBLOCKS_A6_DT
 	  Say 'Y' here if you want your kernel to support the
 	  Plat'Home OpenBlocks A6 (Flattened Device Tree).
 
+config MACH_READYNAS_DT
+	bool "NETGEAR ReadyNAS Duo v2 (Flattened Device Tree)"
+	select ARCH_KIRKWOOD_DT
+	select ARM_APPENDED_DTB
+	select ARM_ATAG_DTB_COMPAT
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  NETGEAR ReadyNAS Duo v2 using Fattened Device Tree.
+
 config MACH_TOPKICK_DT
 	bool "USI Topkick (Flattened Device Tree)"
 	select ARCH_KIRKWOOD_DT
diff --git a/arch/arm/mach-kirkwood/Makefile b/arch/arm/mach-kirkwood/Makefile
index 4cc4bee..ff0f3cb 100644
--- a/arch/arm/mach-kirkwood/Makefile
+++ b/arch/arm/mach-kirkwood/Makefile
@@ -39,4 +39,5 @@ obj-$(CONFIG_MACH_NETSPACE_LITE_V2_DT)	+= board-ns2.o
 obj-$(CONFIG_MACH_NETSPACE_MINI_V2_DT)	+= board-ns2.o
 obj-$(CONFIG_MACH_NSA310_DT)		+= board-nsa310.o
 obj-$(CONFIG_MACH_OPENBLOCKS_A6_DT)	+= board-openblocks_a6.o
+obj-$(CONFIG_MACH_READYNAS_DT)		+= board-readynas.o
 obj-$(CONFIG_MACH_TOPKICK_DT)		+= board-usi_topkick.o
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
index 2e73e9d..42ade1f 100644
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@ -138,6 +138,9 @@ static void __init kirkwood_dt_init(void)
 	if (of_machine_is_compatible("mpl,cec4"))
 		mplcec4_init();
 
+	if (of_machine_is_compatible("netgear,readynas-duo-v2"))
+		netgear_readynas_init();
+
 	if (of_machine_is_compatible("plathome,openblocks-a6"))
 		openblocks_a6_init();
 
@@ -166,6 +169,7 @@ static const char * const kirkwood_dt_board_compat[] = {
 	"lacie,netspace_lite_v2",
 	"lacie,netspace_mini_v2",
 	"mpl,cec4",
+	"netgear,readynas-duo-v2",
 	"plathome,openblocks-a6",
 	"usi,topkick",
 	"zyxel,nsa310",
diff --git a/arch/arm/mach-kirkwood/board-readynas.c b/arch/arm/mach-kirkwood/board-readynas.c
new file mode 100644
index 0000000..fb42c20
--- /dev/null
+++ b/arch/arm/mach-kirkwood/board-readynas.c
@@ -0,0 +1,28 @@
+/*
+ * NETGEAR ReadyNAS Duo v2 Board setup for drivers not already
+ * converted to DT.
+ *
+ * Copyright (C) 2013, Arnaud EBALARD <[email-masked]>
+ *
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mv643xx_eth.h>
+#include <mach/kirkwood.h>
+#include "common.h"
+
+static struct mv643xx_eth_platform_data netgear_readynas_ge00_data = {
+	.phy_addr	= MV643XX_ETH_PHY_ADDR(0),
+};
+
+void __init netgear_readynas_init(void)
+{
+	kirkwood_ge00_init(&netgear_readynas_ge00_data);
+	kirkwood_pcie_init(KW_PCIE0);
+}
diff --git a/arch/arm/mach-kirkwood/common.h b/arch/arm/mach-kirkwood/common.h
index 5ed7056..7ee8670 100644
--- a/arch/arm/mach-kirkwood/common.h
+++ b/arch/arm/mach-kirkwood/common.h
@@ -141,6 +141,12 @@ void openblocks_a6_init(void);
 static inline void openblocks_a6_init(void) {};
 #endif
 
+#ifdef CONFIG_MACH_READYNAS_DT
+void netgear_readynas_init(void);
+#else
+static inline void netgear_readynas_init(void) {};
+#endif
+
 #ifdef CONFIG_MACH_TOPKICK_DT
 void usi_topkick_init(void);
 #else
-- 
1.7.10.4