ARM: at91: dt: add Calao USB-A9G20 low power version

the low power version have a mmc-spi

eanble mmc-spi and RV3029C2 RTC in at91_dt_defconfig

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/Makefile

@@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_AT91) += at91sam9g20ek_2mmc.dtb
 dtb-$(CONFIG_ARCH_AT91) += kizbox.dtb
 dtb-$(CONFIG_ARCH_AT91) += tny_a9g20.dtb
 dtb-$(CONFIG_ARCH_AT91) += usb_a9g20.dtb
+dtb-$(CONFIG_ARCH_AT91) += usb_a9g20_lpw.dtb
 # sam9g45
 dtb-$(CONFIG_ARCH_AT91) += at91sam9m10g45ek.dtb
 dtb-$(CONFIG_ARCH_AT91) += pm9g45.dtb

arch/arm/boot/dts/usb_a9g20.dts

@@ -6,25 +6,9 @@
  * Licensed under GPLv2 or later.
  */
 /dts-v1/;
-#include "at91sam9g20.dtsi"
-#include "usb_a9260_common.dtsi"
+#include "usb_a9g20_common.dtsi"
 
 / {
 	model = "Calao USB A9G20";
 	compatible = "calao,usb-a9g20", "atmel,at91sam9g20", "atmel,at91sam9";
-
-	chosen {
-		bootargs = "mem=64M console=ttyS0,115200 root=/dev/mtdblock5 rw rootfstype=ubifs";
-	};
-
-	memory {
-		reg = <0x20000000 0x4000000>;
-	};
-
-	i2c@0 {
-		rv3029c2@56 {
-			compatible = "rv3029c2";
-			reg = <0x56>;
-		};
-	};
 };

arch/arm/boot/dts/usb_a9g20_common.dtsi

@@ -0,0 +1,27 @@
+/*
+ * usb_a9g20.dts - Device Tree file for Caloa USB A9G20 board
+ *
+ *  Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include "at91sam9g20.dtsi"
+#include "usb_a9260_common.dtsi"
+
+/ {
+	chosen {
+		bootargs = "mem=64M console=ttyS0,115200 root=/dev/mtdblock5 rw rootfstype=ubifs";
+	};
+
+	memory {
+		reg = <0x20000000 0x4000000>;
+	};
+
+	i2c@0 {
+		rv3029c2@56 {
+			compatible = "rv3029c2";
+			reg = <0x56>;
+		};
+	};
+};

arch/arm/boot/dts/usb_a9g20_lpw.dts

@@ -0,0 +1,31 @@
+/*
+ * usb_a9g20_lpw.dts - Device Tree file for Caloa USB A9G20 Low Power board
+ *
+ *  Copyright (C) 2013 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+#include "usb_a9g20_common.dtsi"
+
+/ {
+	model = "Calao USB A9G20 Low Power";
+	compatible = "calao,usb-a9g20-lpw", "calao,usb-a9g20", "atmel,at91sam9g20", "atmel,at91sam9";
+
+	ahb {
+		apb {
+			spi1: spi@fffcc000 {
+				cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>;
+				status = "okay";
+				mmc-slot@0 {
+					compatible = "mmc-spi-slot";
+					reg = <0>;
+					voltage-ranges = <3200 3400>;
+					spi-max-frequency = <25000000>;
+					interrupt-parent = <&pioC>;
+					interrupts = <4 IRQ_TYPE_EDGE_BOTH>;
+				};
+			};
+		};
+	};
+};

arch/arm/configs/at91_dt_defconfig

@@ -161,6 +161,7 @@ CONFIG_USB_ATMEL_USBA=y
 CONFIG_USB_G_SERIAL=y
 CONFIG_MMC=y
 CONFIG_MMC_ATMELMCI=y
+CONFIG_MMC_SPI=y
 CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
 CONFIG_LEDS_GPIO=y
@@ -169,6 +170,7 @@ CONFIG_LEDS_TRIGGER_TIMER=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_LEDS_TRIGGER_GPIO=y
 CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_RV3029C2=y
 CONFIG_RTC_DRV_AT91RM9200=y
 CONFIG_RTC_DRV_AT91SAM9=y
 CONFIG_DMADEVICES=y