1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/183-bcma-scan-for-extra-address-space.patch b/target/linux/brcm47xx/patches-3.2/183-bcma-scan-for-extra-address-space.patch
new file mode 100644
index 0000000000..29fdfce207
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.2/183-bcma-scan-for-extra-address-space.patch
@@ -0,0 +1,61 @@
+From adebff2358c2b631fc04e31ba87eee48e546c655 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 20 Nov 2011 18:22:35 +0100
+Subject: [PATCH 183/186] bcma: scan for extra address space
+
+Some cores like the USB core have two address spaces. In the USB host
+controller one address space is used for the OHCI and the other for the
+EHCI controller interface. The USB controller is the only core I found
+with two address spaces. This code is based on the AI scan function
+ai_scan() in shared/aiutils.c i the Broadcom SDK.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/bcma/scan.c       |   18 +++++++++++++++++-
+ include/linux/bcma/bcma.h |    1 +
+ 2 files changed, 18 insertions(+), 1 deletions(-)
+
+--- a/drivers/bcma/scan.c
++++ b/drivers/bcma/scan.c
+@@ -297,6 +297,22 @@ static int bcma_get_next_core(struct bcm
+ 			return -EILSEQ;
+ 	}
+ 
++
++	/* First Slave Address Descriptor should be port 0:
++	 * the main register space for the core
++	 */
++	tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
++	if (tmp <= 0) {
++		/* Try again to see if it is a bridge */
++		tmp = bcma_erom_get_addr_desc(bus, eromptr,
++					      SCAN_ADDR_TYPE_BRIDGE, 0);
++		if (tmp > 0) {
++			pr_info("found bridge");
++			return -ENXIO;
++		}
++	}
++	core->addr = tmp;
++
+ 	/* get & parse slave ports */
+ 	for (i = 0; i < ports[1]; i++) {
+ 		for (j = 0; ; j++) {
+@@ -309,7 +325,7 @@ static int bcma_get_next_core(struct bcm
+ 				break;
+ 			} else {
+ 				if (i == 0 && j == 0)
+-					core->addr = tmp;
++					core->addr1 = tmp;
+ 			}
+ 		}
+ 	}
+--- a/include/linux/bcma/bcma.h
++++ b/include/linux/bcma/bcma.h
+@@ -139,6 +139,7 @@ struct bcma_device {
+ 	u8 core_unit;
+ 
+ 	u32 addr;
++	u32 addr1;
+ 	u32 wrap;
+ 
+ 	void __iomem *io_addr;