[U-Boot] [PATCH] PCI: Document pciauto_region_allocate()

[Tuomas Tynkkynen]

Add a doc comment for pciauto_region_allocate().

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen at iki.fi>
---
This patch depends on [PATCH 2/2] PCI: autoconfig: Don't allocate 64-bit
addresses to 32-bit only resources.
---
 include/pci.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/pci.h b/include/pci.h
index 127d3c6a6f..8e27cbfaf1 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -680,6 +680,19 @@ extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val);
 void pciauto_region_init(struct pci_region *res);
 void pciauto_region_align(struct pci_region *res, pci_size_t size);
 void pciauto_config_init(struct pci_controller *hose);
+
+/**
+ * pciauto_region_allocate() - Allocate resources from a PCI resource region
+ *
+ * Allocates @size bytes from the PCI resource @res. If @supports_64bit is
+ * false, the result will be guaranteed to fit in 32 bits.
+ *
+ * @res:		PCI region to allocate from
+ * @size:		Amount of bytes to allocate
+ * @bar:		Returns the PCI bus address of the allocated resource
+ * @supports_64bit:	Whether to allow allocations above the 32-bit boundary
+ * @return 0 if successful, -1 on failure
+ */
 int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
 			    pci_addr_t *bar, bool supports_64bit);
 
-- 
2.16.3