bcm53xx: prepare to support Asus RT-N18U

DT file doesn't include any GPIOs yet, but let's add it as we got some
interest in this device on IRC.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42864 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/bcm53xx/image/Makefile

@@ -37,6 +37,15 @@ define Image/Build/DTB
 	$(STAGING_DIR_HOST)/bin/lzma e $(KDIR)/$(1)-$(2).dts $(KDIR)/$(1)-$(2).lzma -d16
 endef
 
+# $(1): filesystem type (e.g. squashfs, initramfs).
+# $(2): dts filename (also used for the firmware file).
+# $(3): device specific magic.
+define Image/Build/AsusTrx
+	$(call Image/Build/$(1)/DTB,$(2))
+	# TODO: Put magic in TRX file
+	cp $(KDIR)/$(IMG_PREFIX)-$(2)-$(1).trx $(BIN_DIR)/
+endef
+
 # $(1): filesystem type (e.g. squashfs, initramfs).
 # $(2): dts filename (also used for the firmware file).
 define Image/Build/Trx
@@ -55,6 +64,8 @@ endef
 
 # $(1): filesystem type (e.g. squashfs, initramfs).
 define Image/Build
+	$(call Image/Build/AsusTrx,$(1),bcm47081-asus-rt-n18u,RT-N18U)
+
 	$(call Image/Build/Trx,$(1),bcm4708-buffalo-wzr-1750dhp)
 
 	$(call Image/Build/Chk,$(1),bcm4708-netgear-r6250,U12H245T00_NETGEAR,1)

target/linux/bcm53xx/patches-3.14/304-ARM-BCM5301X-Add-DT-for-Asus-RT-N18U.patch

+From 14126edd3b5cd6e08e46857283724f783db92c99 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 9 Oct 2014 18:16:26 +0200
+Subject: [PATCH] ARM: BCM5301X: Add DT for Asus RT-N18U
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ arch/arm/boot/dts/Makefile                  |  1 +
+ arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts | 35 +++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm47081.dtsi             | 26 +++++++++++++++++++++
+ 3 files changed, 62 insertions(+)
+ create mode 100644 arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts
+ create mode 100644 arch/arm/boot/dts/bcm47081.dtsi
+
+diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
+index 17c717b..77f932d 100644
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -51,6 +51,7 @@ dtb-$(CONFIG_ARCH_BCM_MOBILE) += bcm11351-brt.dtb \
+ 	bcm28155-ap.dtb
+ dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
+ dtb-$(CONFIG_ARCH_BCM_5301X) += \
++	bcm47081-asus-rt-n18u.dtb \
+ 	bcm4708-buffalo-wzr-1750dhp.dtb \
+ 	bcm4708-netgear-r6250.dtb \
+ 	bcm4708-netgear-r6300-v2.dtb
+diff --git a/arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts b/arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts
+new file mode 100644
+index 0000000..e6347a9
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts
+@@ -0,0 +1,35 @@
++/*
++ * Broadcom BCM470X / BCM5301X arm platform code.
++ * DTS for Asus RT-N18U
++ *
++ * Copyright © 2014 Rafał Miłecki <zajec5@gmail.com>
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++
++/dts-v1/;
++
++#include "bcm47081.dtsi"
++
++/ {
++	compatible = "asus,rt-n18u", "brcm,bcm47081";
++	model = "Asus RT-N18U (BCM47081)";
++
++	chosen {
++		bootargs = "console=ttyS0,115200";
++	};
++
++	memory {
++		reg = <0x00000000 0x08000000>;
++	};
++
++	chipcommonA {
++		uart0: serial@0300 {
++			status = "okay";
++		};
++
++		uart1: serial@0400 {
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm47081.dtsi b/arch/arm/boot/dts/bcm47081.dtsi
+new file mode 100644
+index 0000000..f720012
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm47081.dtsi
+@@ -0,0 +1,26 @@
++/*
++ * Broadcom BCM470X / BCM5301X ARM platform code.
++ * DTS for BCM47081 SoC.
++ *
++ * Copyright © 2014 Rafał Miłecki <zajec5@gmail.com>
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++
++#include "bcm5301x.dtsi"
++
++/ {
++	compatible = "brcm,bcm47081";
++
++	cpus {
++		#address-cells = <1>;
++		#size-cells = <0>;
++
++		cpu@0 {
++			device_type = "cpu";
++			compatible = "arm,cortex-a9";
++			next-level-cache = <&L2>;
++			reg = <0x0>;
++		};
++	};
++};
+-- 
+1.8.4.5
+