diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index 20f6893829..8b50a40289 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -69,6 +69,7 @@
 		clock-frequency = <400000>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_i2c0>;
+		u-boot,dm-pre-reloc;
 	};
 
 	pcic: pci@0 {
diff --git a/arch/sandbox/dts/sandbox.dtsi b/arch/sandbox/dts/sandbox.dtsi
index 6a0338b212..81cdc55b0d 100644
--- a/arch/sandbox/dts/sandbox.dtsi
+++ b/arch/sandbox/dts/sandbox.dtsi
@@ -90,6 +90,7 @@
 			reg = <0x43>;
 			compatible = "sandbox-rtc";
 			sandbox,emul = <&emul0>;
+			u-boot,dm-pre-reloc;
 		};
 		sandbox_pmic: sandbox_pmic {
 			reg = <0x40>;
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index db723cdf98..d47a6252de 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -26,6 +26,8 @@ CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_HANDOFF=y
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_ENV_SUPPORT=y
+CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_RTC_SUPPORT=y
 CONFIG_CMD_CPU=y
 CONFIG_CMD_LICENSE=y
 CONFIG_CMD_BOOTZ=y
@@ -120,7 +122,6 @@ CONFIG_I2C_CROS_EC_LDO=y
 CONFIG_DM_I2C_GPIO=y
 CONFIG_SYS_I2C_SANDBOX=y
 CONFIG_I2C_MUX=y
-CONFIG_SPL_I2C_MUX=y
 CONFIG_I2C_ARB_GPIO_CHALLENGE=y
 CONFIG_CROS_EC_KEYB=y
 CONFIG_I8042_KEYB=y
@@ -187,6 +188,7 @@ CONFIG_REMOTEPROC_SANDBOX=y
 CONFIG_DM_RESET=y
 CONFIG_SANDBOX_RESET=y
 CONFIG_DM_RTC=y
+CONFIG_SPL_DM_RTC=y
 CONFIG_SANDBOX_SERIAL=y
 CONFIG_SOUND=y
 CONFIG_SOUND_SANDBOX=y
diff --git a/drivers/i2c/sandbox_i2c.c b/drivers/i2c/sandbox_i2c.c
index 57b1c60fde..2cbdaf9cc7 100644
--- a/drivers/i2c/sandbox_i2c.c
+++ b/drivers/i2c/sandbox_i2c.c
@@ -93,8 +93,8 @@ static const struct udevice_id sandbox_i2c_ids[] = {
 	{ }
 };
 
-U_BOOT_DRIVER(i2c_sandbox) = {
-	.name	= "i2c_sandbox",
+U_BOOT_DRIVER(sandbox_i2c) = {
+	.name	= "sandbox_i2c",
 	.id	= UCLASS_I2C,
 	.of_match = sandbox_i2c_ids,
 	.ops	= &sandbox_i2c_ops,
diff --git a/drivers/rtc/sandbox_rtc.c b/drivers/rtc/sandbox_rtc.c
index 852770a49c..d0864b1df9 100644
--- a/drivers/rtc/sandbox_rtc.c
+++ b/drivers/rtc/sandbox_rtc.c
@@ -92,8 +92,8 @@ static const struct udevice_id sandbox_rtc_ids[] = {
 	{ }
 };
 
-U_BOOT_DRIVER(rtc_sandbox) = {
-	.name	= "rtc-sandbox",
+U_BOOT_DRIVER(sandbox_rtc) = {
+	.name	= "sandbox_rtc",
 	.id	= UCLASS_RTC,
 	.of_match = sandbox_rtc_ids,
 	.ops	= &sandbox_rtc_ops,
diff --git a/test/dm/of_platdata.c b/test/dm/of_platdata.c
index e827d45ffb..bad733fbee 100644
--- a/test/dm/of_platdata.c
+++ b/test/dm/of_platdata.c
@@ -205,3 +205,18 @@ static int dm_test_of_platdata_phandle(struct unit_test_state *uts)
 	return 0;
 }
 DM_TEST(dm_test_of_platdata_phandle, UT_TESTF_SCAN_PDATA);
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA_PARENT)
+/* Test that device parents are correctly set up */
+static int dm_test_of_platdata_parent(struct unit_test_state *uts)
+{
+	struct udevice *rtc, *i2c;
+
+	ut_assertok(uclass_first_device_err(UCLASS_RTC, &rtc));
+	ut_assertok(uclass_first_device_err(UCLASS_I2C, &i2c));
+	ut_asserteq_ptr(i2c, dev_get_parent(rtc));
+
+	return 0;
+}
+DM_TEST(dm_test_of_platdata_parent, UT_TESTF_SCAN_PDATA);
+#endif