dm: test: Add a test for the system controller uclass

Add a test to confirm that we can access system controllers and find their
driver data.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 4b9861835e..51611009ae 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -240,6 +240,16 @@
 		};
 	};
 
+	syscon@0 {
+		compatible = "sandbox,syscon0";
+		reg = <0x10>;
+	};
+
+	syscon@1 {
+		compatible = "sandbox,syscon1";
+		reg = <0x20>;
+	};
+
 	uart0: serial {
 		compatible = "sandbox,serial";
 		u-boot,dm-pre-reloc;