ARM: BCM5301X: add NAND flash chip description

This adds the NAND flash chip description for a standard chip found
connected to this SoC. This makes use of generic Broadcom NAND driver
with the iProc interface.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm4708-asus-rt-ac56u.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "asus,rt-ac56u", "brcm,bcm4708";

arch/arm/boot/dts/bcm4708-asus-rt-ac68u.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "asus,rt-ac68u", "brcm,bcm4708";

arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "buffalo,wzr-1750dhp", "brcm,bcm4708";

arch/arm/boot/dts/bcm4708-luxul-xwc-1000.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "luxul,xwc-1000", "brcm,bcm4708";
@@ -23,12 +24,8 @@ memory {
 		reg = <0x00000000 0x08000000>;
 	};
 
-	axi@18000000 {
-		nand@28000 {
-			reg = <0x00028000 0x1000>;
-			#address-cells = <1>;
-			#size-cells = <1>;
-
+	nand: nand@18028000 {
+		nandcs@0 {
 			partition@0 {
 				label = "ubi";
 				reg = <0x00000000 0x08000000>;

arch/arm/boot/dts/bcm4708-netgear-r6250.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "netgear,r6250v1", "brcm,bcm4708";

arch/arm/boot/dts/bcm4708-netgear-r6300-v2.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "netgear,r6300v2", "brcm,bcm4708";

arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "smartrg,sr400ac", "brcm,bcm4708";

arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm47081.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "asus,rt-n18u", "brcm,bcm47081", "brcm,bcm4708";

arch/arm/boot/dts/bcm47081-buffalo-wzr-600dhp2.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm47081.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "buffalo,wzr-600dhp2", "brcm,bcm47081", "brcm,bcm4708";

arch/arm/boot/dts/bcm47081-buffalo-wzr-900dhp.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm47081.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "buffalo,wzr-900dhp", "brcm,bcm47081", "brcm,bcm4708";

arch/arm/boot/dts/bcm4709-buffalo-wxr-1900dhp.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "buffalo,wxr-1900dhp", "brcm,bcm4709", "brcm,bcm4708";

arch/arm/boot/dts/bcm4709-netgear-r8000.dts

@@ -10,6 +10,7 @@
 /dts-v1/;
 
 #include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
 
 / {
 	compatible = "netgear,r8000", "brcm,bcm4709", "brcm,bcm4708";

arch/arm/boot/dts/bcm5301x-nand-cs0-bch8.dtsi

+/*
+ * Broadcom BCM470X / BCM5301X Nand chip defaults.
+ *
+ * This should be included if the NAND controller is on chip select 0
+ * and uses 8 bit ECC.
+ *
+ * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+/ {
+	nand@18028000 {
+		nandcs@0 {
+			compatible = "brcm,nandcs";
+			reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			nand-ecc-strength = <8>;
+			nand-ecc-step-size = <512>;
+		};
+	};
+};

arch/arm/boot/dts/bcm5301x.dtsi

@@ -143,4 +143,16 @@ chipcommon: chipcommon@0 {
 			#gpio-cells = <2>;
 		};
 	};
+
+	nand: nand@18028000 {
+		compatible = "brcm,nand-iproc", "brcm,brcmnand-v6.1", "brcm,brcmnand";
+		reg = <0x18028000 0x600>, <0x1811a408 0x600>, <0x18028f00 0x20>;
+		reg-names = "nand", "iproc-idm", "iproc-ext";
+		interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		brcm,nand-has-wp;
+	};
 };