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of: property: Add fw_devlink support for optional properties

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Not all DT bindings are mandatory bindings. Add support for optional DT
bindings and mark iommus, iommu-map, dmas as optional DT bindings.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210205222644.2357303-5-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Saravana Kannan
2021-02-05 14:26:40 -08:00
committed by Greg Kroah-Hartman
parent 19d0f5f6bf
commit a9dd8f3c2c
1 changed files with 9 additions and 3 deletions
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12
drivers/of/property.c
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@@ -1235,6 +1235,7 @@ static struct device_node *parse_##fname(struct device_node *np, \
struct supplier_bindings {
struct device_node *(*parse_prop)(struct device_node *np,
const char *prop_name, int index);
bool optional;
};
DEFINE_SIMPLE_PROP(clocks, "clocks", "#clock-cells")
@@ -1309,12 +1310,12 @@ static struct device_node *parse_interrupts(struct device_node *np,
static const struct supplier_bindings of_supplier_bindings[] = {
{ .parse_prop = parse_clocks, },
{ .parse_prop = parse_interconnects, },
{ .parse_prop = parse_iommus, },
{ .parse_prop = parse_iommu_maps, },
{ .parse_prop = parse_iommus, .optional = true, },
{ .parse_prop = parse_iommu_maps, .optional = true, },
{ .parse_prop = parse_mboxes, },
{ .parse_prop = parse_io_channels, },
{ .parse_prop = parse_interrupt_parent, },
{ .parse_prop = parse_dmas, },
{ .parse_prop = parse_dmas, .optional = true, },
{ .parse_prop = parse_power_domains, },
{ .parse_prop = parse_hwlocks, },
{ .parse_prop = parse_extcon, },
@@ -1368,6 +1369,11 @@ static int of_link_property(struct device_node *con_np, const char *prop_name)
/* Do not stop at first failed link, link all available suppliers. */
while (!matched && s->parse_prop) {
if (s->optional && !fw_devlink_is_strict()) {
s++;
continue;
}
while ((phandle = s->parse_prop(con_np, prop_name, i))) {
matched = true;
i++;