[PATCH 22/38] MIPS: SGI-IP27: recognize the PXBow crossbar

[Imre Kaloz <kaloz@kernel.org>]

A Tezro's crossbar is a PXBow, widget part number 0xd100. Without
recognizing it, xtalk_probe_node() logs the widget as unknown and never
calls xbow_probe(), leaving every IO widget behind it unenumerated.

Signed-off-by: Imre Kaloz <kaloz@kernel.org>
---
 arch/mips/include/asm/xtalk/xwidget.h | 7 +++++++
 arch/mips/sgi-ip27/ip27-xtalk.c       | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/arch/mips/include/asm/xtalk/xwidget.h b/arch/mips/include/asm/xtalk/xwidget.h
index 978877e8a090..6a98e87b4711 100644
--- a/arch/mips/include/asm/xtalk/xwidget.h
+++ b/arch/mips/include/asm/xtalk/xwidget.h
@@ -109,6 +109,7 @@
 #define WIDGET_BDRCK_PART_NUM	0xc110
 #define WIDGET_TPU_PART_NUM	0xc202
 #define WIDGET_XXBOW_PART_NUM	0xd000
+#define WIDGET_PXBOW_PART_NUM	0xd100
 #define WIDGET_XBRDG_PART_NUM	0xd002
 #define WIDGET_NULL_PART_NUM	-1
 
@@ -183,6 +184,12 @@ static const struct widget_ident widget_idents[] __initconst __maybe_unused = {
 		"xxbow",
 		{NULL, "1.0", "2.0", NULL},
 	},
+	{
+		WIDGET_XXBOW_MFGR_NUM,
+		WIDGET_PXBOW_PART_NUM,
+		"pxbow",
+		{NULL, "1.0", NULL},
+	},
 	{
 		WIDGET_XBRDG_MFGR_NUM,
 		WIDGET_XBRDG_PART_NUM,
diff --git a/arch/mips/sgi-ip27/ip27-xtalk.c b/arch/mips/sgi-ip27/ip27-xtalk.c
index bd2ac24452f5..105977316391 100644
--- a/arch/mips/sgi-ip27/ip27-xtalk.c
+++ b/arch/mips/sgi-ip27/ip27-xtalk.c
@@ -21,6 +21,7 @@
 
 #define XBOW_WIDGET_PART_NUM	0x0
 #define XXBOW_WIDGET_PART_NUM	0xd000	/* Xbow in Xbridge */
+#define PXBOW_WIDGET_PART_NUM	0xd100	/* PXbow */
 #define BASE_XBOW_PORT		8     /* Lowest external port */
 
 enum xtalk_bridge_type {
@@ -241,6 +242,7 @@ static void xtalk_probe_node(nasid_t nasid)
 		break;
 	case XBOW_WIDGET_PART_NUM:
 	case XXBOW_WIDGET_PART_NUM:
+	case PXBOW_WIDGET_PART_NUM:
 		pr_info("xtalk:n%d/0 xbow widget\n", nasid);
 		xbow_probe(nasid);
 		break;
-- 
2.47.3