[U-Boot] [RFC PATCH 06/29] drivers: pci-uclass: add multi entry support for pci regions

[Suneel Garapati]

From: Suneel Garapati <sgarapati at marvell.com>

Enable PCI memory regions to be of multiple entry. This helps to
add support for SoC's like OcteonTX/TX2 where every peripheral is
on PCI bus.

Signed-off-by: Suneel Garapati <sgarapati at marvell.com>
---
 drivers/pci/Kconfig      | 9 +++++++++
 drivers/pci/pci-uclass.c | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 19e7b50046..752439afcf 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -43,6 +43,15 @@ config PCI_PNP
 	help
 	  Enable PCI memory and I/O space resource allocation and assignment.
 
+config PCI_REGION_MULTI_ENTRY
+	bool "Enable Multiple entries of MEMORY region for PCI"
+	depends on PCI || DM_PCI
+	default n
+	help
+	  Enable PCI memory regions to be of multiple entry. This helps to
+	  add support for SoC's like OcteonTX/TX2 where every peripheral is
+	  on PCI bus.
+
 config PCIE_ECAM_GENERIC
 	bool "Generic ECAM-based PCI host controller support"
 	default n
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 007b7472c6..f17e83565c 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -902,10 +902,12 @@ static void decode_regions(struct pci_controller *hose, ofnode parent_node,
 		}
 
 		pos = -1;
+#if !CONFIG_IS_ENABLED(PCI_REGION_MULTI_ENTRY)
 		for (i = 0; i < hose->region_count; i++) {
 			if (hose->regions[i].flags == type)
 				pos = i;
 		}
+#endif
 		if (pos == -1)
 			pos = hose->region_count++;
 		debug(" - type=%d, pos=%d\n", type, pos);
-- 
2.23.0