This patch adds a comment to explain the use of the hardcoded value for
the number of address cells in mvebu_get_tgt_attr(). This should help to
rework this function, once CONFIG_OF_LIVE is enabled for MVEBU in
general.
Signed-off-by: Stefan Roese <s...@denx.de>
Cc: Bin Meng <bmeng...@gmail.com>
---
drivers/pci/pci_mvebu.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c
index 6026fa67f9..e21dc10c2f 100644
--- a/drivers/pci/pci_mvebu.c
+++ b/drivers/pci/pci_mvebu.c
@@ -369,6 +369,12 @@ static int mvebu_get_tgt_attr(ofnode node, int devfn,
if (!range)
return -EINVAL;
+ /*
+ * Linux uses of_n_addr_cells() to get the number of address cells
+ * here. Currently this function is only available in U-Boot when
+ * CONFIG_OF_LIVE is enabled. Until this is enabled for MVEBU in
+ * general, lets't hardcode the "pna" value in the U-Boot code.
+ */
pna = 2; /* hardcoded for now because of lack of of_n_addr_cells() */
rangesz = pna + na + ns;
nranges = rlen / sizeof(__be32) / rangesz;
--
2.20.1
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