From: Saravana Kannan <saravanak@google.com>
To: Jonathan Corbet <corbet@lwn.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Kevin Hilman <khilman@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Len Brown <len.brown@intel.com>, Len Brown <lenb@kernel.org>,
Pavel Machek <pavel@ucw.cz>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Marc Zyngier <maz@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Cc: Saravana Kannan <saravanak@google.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, linux-clk@vger.kernel.org,
devicetree@vger.kernel.org, linux-acpi@vger.kernel.org,
Marek Szyprowski <m.szyprowski@samsung.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
kernel-team@android.com
Subject: [PATCH v4 4/8] of: property: Add fw_devlink support for optional properties
Date: Fri, 5 Feb 2021 14:26:40 -0800 [thread overview]
Message-ID: <20210205222644.2357303-5-saravanak@google.com> (raw)
In-Reply-To: <20210205222644.2357303-1-saravanak@google.com>
Not all DT bindings are mandatory bindings. Add support for optional DT
bindings and mark iommus, iommu-map, dmas as optional DT bindings.
Signed-off-by: Saravana Kannan <saravanak@google.com>
---
drivers/of/property.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/of/property.c b/drivers/of/property.c
index 53d163c8d39b..962109082df1 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -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")
@@ -1308,12 +1309,12 @@ 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++;
--
2.30.0.478.g8a0d178c01-goog
next prev parent reply other threads:[~2021-02-06 2:43 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20210205222651eucas1p28ef87073dea33c1c5224c14aa203bec5@eucas1p2.samsung.com>
2021-02-05 22:26 ` [PATCH v4 0/8] Make fw_devlink=on more forgiving Saravana Kannan
2021-02-05 22:26 ` [PATCH v4 1/8] driver core: fw_devlink: Detect supplier devices that will never be added Saravana Kannan
2021-02-05 22:26 ` [PATCH v4 2/8] of: property: Don't add links to absent suppliers Saravana Kannan
2021-02-09 21:25 ` Rob Herring
2021-02-05 22:26 ` [PATCH v4 3/8] driver core: Add fw_devlink.strict kernel param Saravana Kannan
2021-02-05 22:26 ` Saravana Kannan [this message]
2021-02-09 21:33 ` [PATCH v4 4/8] of: property: Add fw_devlink support for optional properties Rob Herring
2021-02-09 21:54 ` Saravana Kannan
2021-02-10 8:25 ` Geert Uytterhoeven
2021-02-05 22:26 ` [PATCH v4 5/8] driver core: fw_devlink: Handle suppliers that don't use driver core Saravana Kannan
2021-02-05 22:26 ` [PATCH v4 6/8] irqdomain: Mark fwnodes when their irqdomain is added/removed Saravana Kannan
2021-02-05 22:26 ` [PATCH v4 7/8] PM: domains: Mark fwnodes when their powerdomain " Saravana Kannan
2021-02-05 22:26 ` [PATCH v4 8/8] clk: Mark fwnodes when their clock provider " Saravana Kannan
2021-02-08 15:38 ` Rob Herring
2021-02-08 23:34 ` Saravana Kannan
2021-02-10 11:44 ` [PATCH] clk: Mark fwnodes when their clock provider is added Tudor Ambarus
2021-02-10 11:44 ` Tudor Ambarus
2021-02-11 13:00 ` Greg KH
2021-02-13 0:37 ` Stephen Boyd
[not found] ` <CGME20210325133159eucas1p297b769beb681743fb32d362a86cc6e3e@eucas1p2.samsung.com>
2021-03-25 13:31 ` Marek Szyprowski
2021-03-25 15:47 ` Geert Uytterhoeven
2021-03-25 18:25 ` Nicolas Saenz Julienne
2021-03-26 18:13 ` Stephen Boyd
2021-03-26 18:29 ` Geert Uytterhoeven
2021-04-21 3:26 ` Guenter Roeck
2021-04-21 7:00 ` Saravana Kannan
2021-02-10 19:13 ` Saravana Kannan
2021-03-30 15:42 ` Guenter Roeck
2021-03-30 16:26 ` Saravana Kannan
[not found] ` <161317679292.1254594.15797939257637374295@swboyd.mtv.corp.google.com>
2021-02-14 21:15 ` [PATCH v4 8/8] clk: Mark fwnodes when their clock provider is added/removed Saravana Kannan
2021-02-06 2:45 ` [PATCH v4 0/8] Make fw_devlink=on more forgiving Saravana Kannan
2021-02-06 19:41 ` Geert Uytterhoeven
2021-02-06 20:47 ` Saravana Kannan
2021-02-08 8:40 ` Marek Szyprowski
2021-02-08 23:57 ` Saravana Kannan
2021-02-10 8:19 ` Tudor.Ambarus
2021-02-10 8:54 ` Saravana Kannan
2021-02-10 10:02 ` Tudor.Ambarus
2021-02-10 19:14 ` Saravana Kannan
2021-02-11 13:00 ` Geert Uytterhoeven
2021-02-11 13:05 ` Geert Uytterhoeven
2021-02-12 2:59 ` Saravana Kannan
2021-02-12 8:14 ` Geert Uytterhoeven
2021-02-12 20:57 ` Saravana Kannan
2021-02-15 12:38 ` Geert Uytterhoeven
2021-02-15 21:26 ` Saravana Kannan
2021-02-16 8:05 ` Geert Uytterhoeven
2021-02-16 18:48 ` Saravana Kannan
2021-02-16 20:31 ` Geert Uytterhoeven
2021-02-17 23:57 ` Saravana Kannan
2021-02-25 9:21 ` Geert Uytterhoeven
2021-02-15 15:16 ` Geert Uytterhoeven
2021-02-15 21:57 ` Saravana Kannan
2021-02-16 12:58 ` Geert Uytterhoeven
2021-02-15 11:19 ` Geert Uytterhoeven
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