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scripts/dts/extract: Re-implement get_addr_size_cells

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We use to walk to the full tree in search of addr/size cells.  We should
only have to look at the parent of the node for these properties.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
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Kumar Gala 2018-10-03 18:42:30 -05:00 • committed by Kumar Gala
commit 31340d8cdd
1 changed files with 7 additions and 7 deletions
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14
scripts/dts/extract/globals.py
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@ -196,13 +196,13 @@ def find_parent_prop(node_address, prop):
# Get the #{address,size}-cells for a given node
def get_addr_size_cells(node_address):
path = ''
parent_addr = get_parent_address(node_address)
if parent_addr == '':
parent_addr = '/'
nr_addr = reduced['/']['props'].get('#address-cells')
nr_size = reduced['/']['props'].get('#size-cells')
# The DT spec says that if #address-cells is missing default to 2
# if #size-cells is missing default to 1
nr_addr = reduced[parent_addr]['props'].get('#address-cells', 2)
nr_size = reduced[parent_addr]['props'].get('#size-cells', 1)
for comp in node_address.split('/')[1:-1]:
path += '/' + comp
nr_addr = reduced[path]['props'].get('#address-cells', nr_addr)
nr_size = reduced[path]['props'].get('#size-cells', nr_size)
return (nr_addr, nr_size)