Merge tag 'timers-core-2022-01-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:
 "Updates for the time(r) subsystem:

  Core:

   - Make the clocksource watchdog more robust by better validation
     checks of the measurement.

  Drivers:

   - New drivers for MStar and SSD20xd SOCs

   - The usual cleanups and improvements all over the place"

* tag 'timers-core-2022-01-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  dt-bindings: timer: Add Mstar MSC313e timer devicetree bindings documentation
  clocksource/drivers/msc313e: Add support for ssd20xd-based platforms
  clocksource/drivers: Add MStar MSC313e timer support
  clocksource/drivers/pistachio: Fix -Wunused-but-set-variable warning
  clocksource/drivers/timer-imx-sysctr: Set cpumask to cpu_possible_mask
  clocksource/drivers/imx-sysctr: Mark two variable with __ro_after_init
  clocksource/drivers/renesas,ostm: Make RENESAS_OSTM symbol visible
  clocksource/drivers/renesas-ostm: Add RZ/G2L OSTM support
  dt-bindings: timer: renesas: ostm: Document Renesas RZ/G2L OSTM
  clocksource/drivers/exynos_mct: Fix silly typo resulting in checkpatch warning
  clocksource: Reduce the default clocksource_watchdog() retries to 2
  clocksource: Avoid accidental unstable marking of clocksources
  dt-bindings: timer: tpm-timer: Add imx8ulp compatible string
  reset: Add of_reset_control_get_optional_exclusive()
  clocksource/drivers/exynos_mct: Refactor resources allocation
  dt-bindings: timer: remove rockchip,rk3066-timer compatible string from rockchip,rk-timer.yaml
  dt-bindings: timer: cadence_ttc: Add power-domains

6 files changed, 73 insertions, 7 deletions

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 685645e75706..4955d2faf4cc 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -612,8 +612,8 @@
 	clocksource.max_cswd_read_retries= [KNL]
 			Number of clocksource_watchdog() retries due to
 			external delays before the clock will be marked
-			unstable.  Defaults to three retries, that is,
-			four attempts to read the clock under test.
+			unstable.  Defaults to two retries, that is,
+			three attempts to read the clock under test.
 
 	clocksource.verify_n_cpus= [KNL]
 			Limit the number of CPUs checked for clocksources
diff --git a/Documentation/devicetree/bindings/timer/cdns,ttc.yaml b/Documentation/devicetree/bindings/timer/cdns,ttc.yaml
index 8615353f69b4..c3386076a98c 100644
--- a/Documentation/devicetree/bindings/timer/cdns,ttc.yaml
+++ b/Documentation/devicetree/bindings/timer/cdns,ttc.yaml
@@ -25,6 +25,9 @@ properties:
   clocks:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
   timer-width:
     $ref: "/schemas/types.yaml#/definitions/uint32"
     description: |
diff --git a/Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml b/Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml
new file mode 100644
index 000000000000..03d5dba5d5b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/mstar,msc313e-timer.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/mstar,msc313e-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mstar MSC313e Timer Device Tree Bindings
+
+maintainers:
+  - Daniel Palmer <daniel@0x0f.com>
+  - Romain Perier <romain.perier@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - mstar,msc313e-timer
+      - sstar,ssd20xd-timer
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    timer@6040 {
+        compatible = "mstar,msc313e-timer";
+        reg = <0x6040 0x40>;
+        clocks = <&xtal_div2>;
+        interrupts-extended = <&intc_fiq GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
+    };
+...
diff --git a/Documentation/devicetree/bindings/timer/nxp,tpm-timer.yaml b/Documentation/devicetree/bindings/timer/nxp,tpm-timer.yaml
index edd9585f6726..f69773a8e4b9 100644
--- a/Documentation/devicetree/bindings/timer/nxp,tpm-timer.yaml
+++ b/Documentation/devicetree/bindings/timer/nxp,tpm-timer.yaml
@@ -19,7 +19,11 @@ description: |
 
 properties:
   compatible:
-    const: fsl,imx7ulp-tpm
+    oneOf:
+      - const: fsl,imx7ulp-tpm
+      - items:
+          - const: fsl,imx8ulp-tpm
+          - const: fsl,imx7ulp-tpm
 
   reg:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/timer/renesas,ostm.yaml b/Documentation/devicetree/bindings/timer/renesas,ostm.yaml
index 600d47ab7d58..7fa7f977b44c 100644
--- a/Documentation/devicetree/bindings/timer/renesas,ostm.yaml
+++ b/Documentation/devicetree/bindings/timer/renesas,ostm.yaml
@@ -21,9 +21,10 @@ properties:
   compatible:
     items:
       - enum:
-          - renesas,r7s72100-ostm # RZ/A1H
-          - renesas,r7s9210-ostm  # RZ/A2M
-      - const: renesas,ostm       # Generic
+          - renesas,r7s72100-ostm  # RZ/A1H
+          - renesas,r7s9210-ostm   # RZ/A2M
+          - renesas,r9a07g044-ostm # RZ/G2{L,LC}
+      - const: renesas,ostm        # Generic
 
   reg:
     maxItems: 1
@@ -37,6 +38,9 @@ properties:
   power-domains:
     maxItems: 1
 
+  resets:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -44,6 +48,16 @@ required:
   - clocks
   - power-domains
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - renesas,r9a07g044-ostm
+then:
+  required:
+    - resets
+
 additionalProperties: false
 
 examples:
diff --git a/Documentation/devicetree/bindings/timer/rockchip,rk-timer.yaml b/Documentation/devicetree/bindings/timer/rockchip,rk-timer.yaml
index e26ecb5893ae..5d157d87dad5 100644
--- a/Documentation/devicetree/bindings/timer/rockchip,rk-timer.yaml
+++ b/Documentation/devicetree/bindings/timer/rockchip,rk-timer.yaml
@@ -18,7 +18,6 @@ properties:
           - enum:
               - rockchip,rv1108-timer
               - rockchip,rk3036-timer
-              - rockchip,rk3066-timer
               - rockchip,rk3188-timer
               - rockchip,rk3228-timer
               - rockchip,rk3229-timer