[PATCH v2 7/7] of: unittest: Test fw_devlink with clock nexus maps

[Ernest Van Hoecke <ernestvanhoecke@gmail.com>]

From: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>

Extend the fw_devlink OF unit tests with clock references routed through
a nexus map. Verify that the mapped consumer has exactly one link to the
final clock provider rather than to the nexus.

Also cover a direct clock reference to ensure that it continues to
resolve to the original provider when no map is present.

Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>
---
 drivers/of/unittest-data/tests-phandle.dtsi | 14 ++++++++++++++
 drivers/of/unittest.c                       |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/drivers/of/unittest-data/tests-phandle.dtsi b/drivers/of/unittest-data/tests-phandle.dtsi
index eef966615b22..aaf0b871c01d 100644
--- a/drivers/of/unittest-data/tests-phandle.dtsi
+++ b/drivers/of/unittest-data/tests-phandle.dtsi
@@ -81,6 +81,10 @@ consumer-b {
 			};
 
 			fw-devlink-tests {
+				clock_provider: clock-controller {
+					#clock-cells = <1>;
+				};
+
 				gpio_provider: gpio-controller {
 					#gpio-cells = <2>;
 				};
@@ -90,8 +94,10 @@ pwm_provider: pwm-controller {
 				};
 
 				fwdevlink_nexus: nexus {
+					#clock-cells = <1>;
 					#gpio-cells = <2>;
 					#pwm-cells = <2>;
+					clock-map = <0 &clock_provider 1>;
 					gpio-map = <0 0 &gpio_provider 1 0>;
 					gpio-map-mask = <0xffffffff 0>;
 					gpio-map-pass-thru = <0 0xffffffff>;
@@ -100,6 +106,14 @@ fwdevlink_nexus: nexus {
 					pwm-map-pass-thru = <0 0xffffffff>;
 				};
 
+				clock-consumer {
+					clocks = <&fwdevlink_nexus 0>;
+				};
+
+				clock-direct-consumer {
+					clocks = <&clock_provider 1>;
+				};
+
 				gpio-compat-consumer {
 					gpios = <&fwdevlink_nexus 0 0>;
 				};
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index b739a69997a9..2859a44c3fe5 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -765,6 +765,8 @@ static void __init of_unittest_fw_devlink(void)
 		const char *consumer;
 		const char *supplier;
 	} cases[] = {
+		{ "clock-consumer", "clock-controller" },
+		{ "clock-direct-consumer", "clock-controller" },
 		{ "gpio-compat-consumer", "gpio-controller" },
 		{ "gpio-compat-singular-consumer", "gpio-controller" },
 		{ "gpio-consumer", "gpio-controller" },

-- 
2.43.0