From 379865d63cb97f8e8241724aae48e795a6b7cb10 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Fri, 21 Dec 2007 15:39:28 +1100
Subject: [PATCH] [POWERPC] 4xx: Add PCI to Walnut platform

This wires up the 4xx PCI support & device-tree bits for the
405GP based Walnut platform.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
---
 arch/powerpc/boot/dts/walnut.dts   | 39 ++++++++++++++++++++++++++++++
 arch/powerpc/platforms/40x/Kconfig |  1 +
 2 files changed, 40 insertions(+)

diff --git a/arch/powerpc/boot/dts/walnut.dts b/arch/powerpc/boot/dts/walnut.dts
index 754fa3960f..681633ec95 100644
--- a/arch/powerpc/boot/dts/walnut.dts
+++ b/arch/powerpc/boot/dts/walnut.dts
@@ -190,6 +190,45 @@
 				virtual-reg = <f0300005>;
 			};
 		};
+
+		PCI0: pci@ec000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
+			primary;
+			reg = <eec00000 8	/* Config space access */
+			       eed80000 4	/* IACK */
+			       eed80000 4	/* Special cycle */
+			       ef480000 40>;	/* Internal registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed. Chip supports a second
+			 * IO range but we don't use it for now
+			 */
+			ranges = <02000000 0 80000000 80000000 0 20000000
+				  01000000 0 00000000 e8000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 80000000>;
+
+			/* Walnut has all 4 IRQ pins tied together per slot */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 0 &UIC0 1c 8
+
+				/* IDSEL 2 */
+				1000 0 0 0 &UIC0 1d 8
+
+				/* IDSEL 3 */
+				1800 0 0 0 &UIC0 1e 8
+
+				/* IDSEL 4 */
+				2000 0 0 0 &UIC0 1f 8
+			>;
+		};
 	};
 
 	chosen {
diff --git a/arch/powerpc/platforms/40x/Kconfig b/arch/powerpc/platforms/40x/Kconfig
index b8f0a6c164..84551ab979 100644
--- a/arch/powerpc/platforms/40x/Kconfig
+++ b/arch/powerpc/platforms/40x/Kconfig
@@ -59,6 +59,7 @@ config WALNUT
 	depends on 40x
 	default y
 	select 405GP
+	select PCI
 	help
 	  This option enables support for the IBM PPC405GP evaluation board.
 
-- 
2.39.5