[PATCH 2/4] test: dm: Add compatible multimatch test

Markus Schneider-Pargmann (TI.com)
2025-11-26T22:50:40Z

Add a test for binding of multiple drivers with the same compatible. If
one of the drivers returns -ENODEV the other one needs to be bound.

Signed-off-by: Markus Schneider-Pargmann (TI.com) <msp@baylibre.com>
---
arch/sandbox/dts/test.dts | 4 ++++
test/dm/core.c | 15 +++++++++++++++
test/dm/test-driver.c | 25 +++++++++++++++++++++++++
3 files changed, 44 insertions(+)

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index a2c739a2044c728a96b5f4acbf439a42d7e12fb5..9cc854ffe80e994e34010e299029a7f1756697e0 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -457,6 +457,10 @@
mux-control-names = "mux0";
};

+ multimatch-test {
+ compatible = "sandbox,multimatch-test";
+ };
+
phy_provider0: gen_phy@0 {
compatible = "sandbox,phy";
#phy-cells = <1>;
diff --git a/test/dm/core.c b/test/dm/core.c
index 53693f4f7ed7c7265218e4154ebf81a044a3a431..78ee14af228ab20a6639bb076260296adaea2c92 100644
--- a/test/dm/core.c
+++ b/test/dm/core.c
@@ -1410,3 +1410,18 @@ static int dm_test_try_first_device(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_try_first_device, 0);
+
+/* Test that all drivers are iterated when bind returns -ENODEV */
+static int dm_test_multimatch(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+
+ ut_assertok(uclass_find_device_by_name(UCLASS_TEST, "multimatch-test",
+ &dev));
+ ut_assertnonnull(dev);
+ ut_asserteq_str("test_multimatch_second", dev->driver->name);
+ ut_asserteq(2, dm_testdrv_op_count[DM_TEST_OP_BIND]);
+
+ return 0;
+}
+DM_TEST(dm_test_multimatch, UTF_SCAN_FDT);
diff --git a/test/dm/test-driver.c b/test/dm/test-driver.c
index 759de3a5f77f4b64ea577a293586a737e4623f60..bf953d7814df6a0e6efd6c2a3960a925a3fbe5a7 100644
--- a/test/dm/test-driver.c
+++ b/test/dm/test-driver.c
@@ -197,3 +197,28 @@ U_BOOT_DRIVER(test_act_dma_vital_clk_drv) = {
.unbind = test_manual_unbind,
.flags = DM_FLAG_VITAL | DM_FLAG_ACTIVE_DMA,
};
+
+static int test_multimatch_first_bind(struct udevice *dev)
+{
+ dm_testdrv_op_count[DM_TEST_OP_BIND]++;
+ return -ENODEV;
+}
+
+static const struct udevice_id test_multimatch_ids[] = {
+ { .compatible = "sandbox,multimatch-test" },
+ { }
+};
+
+U_BOOT_DRIVER(test_multimatch_first) = {
+ .name = "test_multimatch_first",
+ .id = UCLASS_TEST,
+ .of_match = test_multimatch_ids,
+ .bind = test_multimatch_first_bind,
+};
+
+U_BOOT_DRIVER(test_multimatch_second) = {
+ .name = "test_multimatch_second",
+ .id = UCLASS_TEST,
+ .of_match = test_multimatch_ids,
+ .bind = test_manual_bind,
+};

--
2.51.0