Samsung SoC drivers for v7.3

1. Fix very old leak of OF node in PMU driver.
 2. Few cleanups and new bindings for ExynosAutov920 HSI0 syscon.
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Merge tag 'samsung-drivers-7.3' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/drivers

Samsung SoC drivers for v7.3

1. Fix very old leak of OF node in PMU driver.
2. Few cleanups and new bindings for ExynosAutov920 HSI0 syscon.

* tag 'samsung-drivers-7.3' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  dt-bindings: samsung: exynos-pmu: Narrow allowed reboot modes
  dt-bindings: samsung: exynos-pmu: Restrict children with unevaluatedProperties
  dt-bindings: soc: samsung: exynos-sysreg: Add hsi0 for ExynosAutov920
  soc: samsung: exynos-pmu: fix of_node refcount leak in exynos_get_pmu_regmap()

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/soc/samsung/exynos-pmu.yaml

@@ -94,19 +94,19 @@ properties:
 
   reboot-mode:
     $ref: /schemas/power/reset/syscon-reboot-mode.yaml
-    type: object
+    unevaluatedProperties: false
     description:
       Reboot mode to alter bootloader behavior for the next boot
 
   syscon-poweroff:
     $ref: /schemas/power/reset/syscon-poweroff.yaml#
-    type: object
+    unevaluatedProperties: false
     description:
       Node for power off method
 
   syscon-reboot:
     $ref: /schemas/power/reset/syscon-reboot.yaml#
-    type: object
+    unevaluatedProperties: false
     description:
       Node for reboot method
 
@@ -176,6 +176,20 @@ allOf:
       properties:
         dp-phy: false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - samsung,exynos7-pmu
+    then:
+      properties:
+        reboot-mode:
+          patternProperties:
+            # Negative look-ahead to disallow unsupported modes. The '$' has to be
+            # part of lookahead group to work, instead of trailing outside of ().
+            "^mode-(?!(bootloader$|download$|fastboot$|recovery$))": false
+
   - if:
       properties:
         compatible:
@@ -183,6 +197,13 @@ allOf:
             enum:
               - google,gs101-pmu
     then:
+      properties:
+        reboot-mode:
+          patternProperties:
+            # Negative look-ahead to disallow unsupported modes. The '$' has to be
+            # part of lookahead group to work, instead of trailing outside of ().
+            "^mode-(?!(bootloader$|charge$|dm-verity-device-corrupted$|fastboot$|reboot-ab-update$|recovery$)|rescue$|shutdown-thermal$|shutdown-thermal-battery$)": false
+
       required:
         - google,pmu-intr-gen-syscon
     else:

Documentation/devicetree/bindings/soc/samsung/samsung,exynos-sysreg.yaml

@@ -37,6 +37,7 @@ properties:
               - samsung,exynos8895-peric1-sysreg
               - samsung,exynos990-peric0-sysreg
               - samsung,exynos990-peric1-sysreg
+              - samsung,exynosautov920-hsi0-sysreg
               - samsung,exynosautov920-hsi2-sysreg
               - samsung,exynosautov920-peric0-sysreg
               - samsung,exynosautov920-peric1-sysreg

drivers/soc/samsung/exynos-pmu.c

@@ -167,8 +167,8 @@ static const struct mfd_cell exynos_pmu_devs[] = {
  */
 struct regmap *exynos_get_pmu_regmap(void)
 {
-	struct device_node *np = of_find_matching_node(NULL,
-						      exynos_pmu_of_device_ids);
+	struct device_node *np __free(device_node) =
+		of_find_matching_node(NULL, exynos_pmu_of_device_ids);
 	if (np)
 		return exynos_get_pmu_regmap_by_phandle(np, NULL);
 	return ERR_PTR(-ENODEV);