Signed-off-by: Tim Harvey <thar...@gateworks.com>
---
include/fdtdec.h | 11 +++++++++++
lib/fdtdec.c | 13 +++++++++++++
2 files changed, 24 insertions(+)
diff --git a/include/fdtdec.h b/include/fdtdec.h
index c26df50543..b56be097eb 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -460,6 +460,17 @@ int fdtdec_get_pci_vendev(const void *blob, int node,
int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr,
u32 *bar);
+/**
+ * Look at the bus range property of a device node and return the pci bus
+ * range for this node.
+ * The property must hold one fdt_pci_addr with a lengh.
+ * @param blob FDT blob
+ * @param node node to examine
+ * @param res the resource structure to return the bus range
+ */
+int fdtdec_get_pci_bus_range(const void *blob, int node,
+ struct fdt_resource *res);
+
/**
* Look up a 32-bit integer property in a node and return it. The property
* must have at least 4 bytes of data. The value of the first cell is
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index a420ba1885..7f63b1a312 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -305,6 +305,19 @@ int fdtdec_get_pci_bar32(struct udevice *dev, struct
fdt_pci_addr *addr,
return 0;
}
+
+int fdtdec_get_pci_bus_range(const void *blob, int node,
+ struct fdt_resource *res)
+{
+ const u32 *values;
+ int len;
+ values = fdt_getprop(blob, node, "bus-range", &len);
+ if (!values || len < sizeof(*values) * 2)
+ return -EINVAL;
+ res->start = be32_to_cpup(values++);
+ res->end = be32_to_cpup(values);
+ return 0;
+}
#endif
uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
--
2.17.1
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