dm: x86: Add a uclass for a Platform Controller Hub
Add a simple uclass for this chip which is often found in x86 systems
where the CPU is a separate device.
The device can have children, so make it scan the device tree for these.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c
index 7b74282..ca8cccf 100644
--- a/arch/x86/cpu/ivybridge/bd82x6x.c
+++ b/arch/x86/cpu/ivybridge/bd82x6x.c
@@ -157,12 +157,3 @@
.of_match = bd82x6x_ids,
.probe = bd82x6x_probe,
};
-
-/*
- * TODO(sjg@chromium.org): Move this to arch/x86/lib or similar when other
- * boards also use a PCH
- */
-UCLASS_DRIVER(pch) = {
- .id = UCLASS_PCH,
- .name = "pch",
-};
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 67a34d8..fe022f6 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -20,6 +20,7 @@
ifndef CONFIG_DM_PCI
obj-$(CONFIG_PCI) += pci_type1.o
endif
+obj-y += pch-uclass.o
obj-y += relocate.o
obj-y += physmem.o
obj-$(CONFIG_X86_RAMTEST) += ramtest.o
diff --git a/arch/x86/lib/pch-uclass.c b/arch/x86/lib/pch-uclass.c
new file mode 100644
index 0000000..d1082e1
--- /dev/null
+++ b/arch/x86/lib/pch-uclass.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/root.h>
+
+static int pch_uclass_post_bind(struct udevice *bus)
+{
+ /*
+ * Scan the device tree for devices
+ *
+ * Before relocation, only bind devices marked for pre-relocation
+ * use.
+ */
+ return dm_scan_fdt_node(bus, gd->fdt_blob, bus->of_offset,
+ gd->flags & GD_FLG_RELOC ? false : true);
+}
+
+UCLASS_DRIVER(pch) = {
+ .id = UCLASS_PCH,
+ .name = "pch",
+ .post_bind = pch_uclass_post_bind,
+};