Merge tag 'rtc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Subsystem:
   - stop setting max_user_freq from the individual drivers as this has
     not been hardware related for a while

  New drivers:
   - Andes ATCRTC100
   - Apple SMC
   - Nvidia VRS

  Drivers:
   - renesas-rtca3: add RZ/V2H support
   - tegra: add ACPI support"

* tag 'rtc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits)
  rtc: spacemit: MFD_SPACEMIT_P1 as dependencies
  rtc: atcrtc100: Fix signedness bug in probe()
  rtc: max31335: Fix ignored return value in set_alarm
  rtc: gamecube: Check the return value of ioremap()
  Documentation: ABI: testing: Fix "upto" typo in rtc-cdev
  rtc: Add new rtc-macsmc driver for Apple Silicon Macs
  dt-bindings: rtc: Add Apple SMC RTC
  MAINTAINERS: drop unneeded file entry in NVIDIA VRS RTC DRIVER
  rtc: isl12026: Add id_table
  rtc: renesas-rtca3: Add support for multiple reset lines
  dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H support
  rtc: tegra: Replace deprecated SIMPLE_DEV_PM_OPS
  rtc: tegra: Add ACPI support
  rtc: tegra: Use devm_clk_get_enabled() in probe
  rtc: Kconfig: add MC34708 to mc13xxx help text
  rtc: s35390a: use u8 instead of char for register buffer
  rtc: nvvrs: add NVIDIA VRS RTC device driver
  dt-bindings: rtc: Document NVIDIA VRS RTC
  rtc: atcrtc100: Add ATCRTC100 RTC driver
  MAINTAINERS: Add entry for ATCRTC100 RTC driver
  ...

6 files changed, 188 insertions, 6 deletions

diff --git a/Documentation/ABI/testing/rtc-cdev b/Documentation/ABI/testing/rtc-cdev
index 25910c3c3d7e..cec099a27c6d 100644
--- a/Documentation/ABI/testing/rtc-cdev
+++ b/Documentation/ABI/testing/rtc-cdev
@@ -14,7 +14,7 @@ Description:
 		  for RTCs that support alarms
 
 		* RTC_ALM_READ, RTC_ALM_SET: Read or set the alarm time for
-		  RTCs that support alarms. Can be set upto 24 hours in the
+		  RTCs that support alarms. Can be set up to 24 hours in the
 		  future. Requires a separate RTC_AIE_ON call to enable the
 		  alarm interrupt. (Prefer to use RTC_WKALM_*)
 
diff --git a/Documentation/devicetree/bindings/mfd/apple,smc.yaml b/Documentation/devicetree/bindings/mfd/apple,smc.yaml
index 5429538f7e2e..0410e712c900 100644
--- a/Documentation/devicetree/bindings/mfd/apple,smc.yaml
+++ b/Documentation/devicetree/bindings/mfd/apple,smc.yaml
@@ -46,6 +46,9 @@ properties:
   reboot:
     $ref: /schemas/power/reset/apple,smc-reboot.yaml
 
+  rtc:
+    $ref: /schemas/rtc/apple,smc-rtc.yaml
+
 additionalProperties: false
 
 required:
@@ -80,5 +83,11 @@ examples:
           nvmem-cell-names = "shutdown_flag", "boot_stage",
                              "boot_error_count", "panic_count";
         };
+
+        rtc {
+          compatible = "apple,smc-rtc";
+          nvmem-cells = <&rtc_offset>;
+          nvmem-cell-names = "rtc_offset";
+       };
       };
     };
diff --git a/Documentation/devicetree/bindings/rtc/andestech,atcrtc100.yaml b/Documentation/devicetree/bindings/rtc/andestech,atcrtc100.yaml
new file mode 100644
index 000000000000..ec0a736793c7
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/andestech,atcrtc100.yaml
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/andestech,atcrtc100.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Andes ATCRTC100 Real-Time Clock
+
+maintainers:
+  - CL Wang <cl634@andestech.com>
+
+allOf:
+  - $ref: rtc.yaml#
+
+properties:
+  compatible:
+    enum:
+      - andestech,atcrtc100
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: Periodic timekeeping interrupt
+      - description: RTC alarm interrupt
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    rtc@f0300000 {
+        compatible = "andestech,atcrtc100";
+        reg = <0xf0300000 0x100>;
+        interrupts = <1 IRQ_TYPE_LEVEL_HIGH>, <2 IRQ_TYPE_LEVEL_HIGH>;
+    };
diff --git a/Documentation/devicetree/bindings/rtc/apple,smc-rtc.yaml b/Documentation/devicetree/bindings/rtc/apple,smc-rtc.yaml
new file mode 100644
index 000000000000..607b610665a2
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/apple,smc-rtc.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/apple,smc-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple SMC RTC
+
+description:
+  Apple Silicon Macs (M1, etc.) have an RTC that is part of the PMU IC,
+  but most of the PMU functionality is abstracted out by the SMC.
+  An additional RTC offset stored inside NVMEM is required to compute
+  the current date/time.
+
+maintainers:
+  - Sven Peter <sven@kernel.org>
+
+properties:
+  compatible:
+    const: apple,smc-rtc
+
+  nvmem-cells:
+    items:
+      - description: 48bit RTC offset, specified in 32768 (2^15) Hz clock ticks
+
+  nvmem-cell-names:
+    items:
+      - const: rtc_offset
+
+required:
+  - compatible
+  - nvmem-cells
+  - nvmem-cell-names
+
+additionalProperties: false
diff --git a/Documentation/devicetree/bindings/rtc/nvidia,vrs-10.yaml b/Documentation/devicetree/bindings/rtc/nvidia,vrs-10.yaml
new file mode 100644
index 000000000000..c7dbc8b83c00
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/nvidia,vrs-10.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/nvidia,vrs-10.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Voltage Regulator Specification Real Time Clock
+
+maintainers:
+  - Shubhi Garg <shgarg@nvidia.com>
+
+description:
+  NVIDIA VRS-10 (Voltage Regulator Specification) is a Power Management IC
+  (PMIC) that implements a power sequencing solution with I2C interface.
+  The device includes a real-time clock (RTC) with 32kHz clock output and
+  backup battery support, alarm functionality for system wake-up from
+  suspend and shutdown states, OTP memory for power sequencing configuration,
+  and an interrupt controller for managing VRS events.
+
+properties:
+  compatible:
+    const: nvidia,vrs-10
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - '#interrupt-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@3c {
+            compatible = "nvidia,vrs-10";
+            reg = <0x3c>;
+            interrupt-parent = <&pmc>;
+            interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml b/Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml
index e70eeb66aa64..ccb1638c35b9 100644
--- a/Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml
+++ b/Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml
@@ -9,14 +9,12 @@ title: Renesas RTCA-3 Real Time Clock
 maintainers:
   - Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
 
-allOf:
-  - $ref: rtc.yaml#
-
 properties:
   compatible:
     items:
       - enum:
           - renesas,r9a08g045-rtca3 # RZ/G3S
+          - renesas,r9a09g057-rtca3 # RZ/V2H
       - const: renesas,rz-rtca3
 
   reg:
@@ -48,8 +46,12 @@ properties:
     maxItems: 1
 
   resets:
-    items:
-      - description: VBATTB module reset
+    minItems: 1
+    maxItems: 2
+
+  reset-names:
+    minItems: 1
+    maxItems: 2
 
 required:
   - compatible
@@ -61,6 +63,39 @@ required:
   - power-domains
   - resets
 
+allOf:
+  - $ref: rtc.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a08g045-rtca3
+    then:
+      properties:
+        resets:
+          items:
+            - description: VBATTB module reset
+        reset-names:
+          const: vbattb
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g057-rtca3
+    then:
+      properties:
+        resets:
+          items:
+            - description: RTC reset
+            - description: Reset for the RTEST registers
+        reset-names:
+          items:
+            - const: rtc
+            - const: rtest
+      required:
+        - reset-names
+
 additionalProperties: false
 
 examples:
@@ -81,4 +116,5 @@ examples:
         clock-names = "bus", "counter";
         power-domains = <&cpg>;
         resets = <&cpg R9A08G045_VBAT_BRESETN>;
+        reset-names = "vbattb";
     };