dm: Add basic tests

Add some tests of driver model functionality. Coverage includes:

- basic init
- binding of drivers to devices using platform_data
- automatic probing of devices when referenced
- availability of platform data to devices
- lifecycle from bind to probe to remove to unbind
- renumbering within a uclass when devices are probed/removed
- calling driver-defined operations
- deactivation of drivers when removed
- memory leak across creation and destruction of drivers/uclasses
- uclass init/destroy methods
- automatic probe/remove of children/parents when needed

This function is enabled for sandbox, using CONFIG_DM_TEST.

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

1 files changed, 59 insertions, 0 deletions

diff --git a/test/dm/test.dts b/test/dm/test.dts
new file mode 100644
index 00000000000..ec5364f7c7e
--- /dev/null
+++ b/test/dm/test.dts
@@ -0,0 +1,59 @@
+/dts-v1/;
+
+/ {
+	model = "sandbox";
+	compatible = "sandbox";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	a-test {
+		reg = <0>;
+		compatible = "denx,u-boot-fdt-test";
+		ping-add = <0>;
+	};
+
+	junk {
+		reg = <1>;
+		compatible = "not,compatible";
+	};
+
+	no-compatible {
+		reg = <2>;
+	};
+
+	b-test {
+		reg = <3>;
+		compatible = "denx,u-boot-fdt-test";
+		ping-add = <3>;
+	};
+
+	some-bus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <4>;
+		ping-add = <4>;
+		c-test {
+			compatible = "denx,u-boot-fdt-test";
+			reg = <5>;
+			ping-add = <5>;
+		};
+	};
+
+	d-test {
+		reg = <6>;
+		ping-add = <6>;
+		compatible = "google,another-fdt-test";
+	};
+
+	base-gpios {
+		compatible = "sandbox,gpio";
+		gpio-bank-name = "a";
+		num-gpios = <20>;
+	};
+
+	extra-gpios {
+		compatible = "sandbox,gpio";
+		gpio-bank-name = "b";
+		num-gpios = <10>;
+	};
+};