Merge tag 'clk-microchip-6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into clk-microchip

Pull Microchip clk driver updates from Claudiu Beznea:

Microchip AT91:
- add generic clocks for U(S)ART available on SAMA5D2 SoCs

Microchip Polarfire:
- reset controller support for Polarfire clocks
- .round_rate and .set rate support for clk-mpfs
- code cleanup for clk-mpfs
- PLL support for PolarFire SoC's Clock Conditioning Circuitry

* tag 'clk-microchip-6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  clk: at91: sama5d2: Add Generic Clocks for UART/USART
  clk: microchip: add PolarFire SoC fabric clock support
  dt-bindings: clk: add PolarFire SoC fabric clock ids
  dt-bindings: clk: document PolarFire SoC fabric clocks
  dt-bindings: clk: rename mpfs-clkcfg binding
  clk: microchip: mpfs: update module authorship & licencing
  clk: microchip: mpfs: convert periph_clk to clk_gate
  clk: microchip: mpfs: convert cfg_clk to clk_divider
  clk: microchip: mpfs: delete 2 line mpfs_clk_register_foo()
  clk: microchip: mpfs: simplify control reg access
  clk: microchip: mpfs: move id & offset out of clock structs
  clk: microchip: mpfs: add MSS pll's set & round rate
  MAINTAINERS: add polarfire soc reset controller
  reset: add polarfire soc reset support
  clk: microchip: mpfs: add reset controller
  dt-bindings: clk: microchip: mpfs: add reset controller support
  clk: microchip: mpfs: make the rtc's ahb clock critical
  clk: microchip: mpfs: fix clk_cfg array bounds violation

2 files changed, 96 insertions, 3 deletions

diff --git a/Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml b/Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml
new file mode 100644
index 000000000000..f1770360798f
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/microchip,mpfs-ccc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip PolarFire SoC Fabric Clock Conditioning Circuitry
+
+maintainers:
+  - Conor Dooley <conor.dooley@microchip.com>
+
+description: |
+  Microchip PolarFire SoC has 4 Clock Conditioning Circuitry blocks. Each of
+  these blocks contains two PLLs and 2 DLLs & are located in the four corners of
+  the FPGA. For more information see "PolarFire SoC FPGA Clocking Resources" at:
+  https://onlinedocs.microchip.com/pr/GUID-8F0CC4C0-0317-4262-89CA-CE7773ED1931-en-US-1/index.html
+
+properties:
+  compatible:
+    const: microchip,mpfs-ccc
+
+  reg:
+    items:
+      - description: PLL0's control registers
+      - description: PLL1's control registers
+      - description: DLL0's control registers
+      - description: DLL1's control registers
+
+  clocks:
+    description:
+      The CCC PLL's have two input clocks. It is required that even if the input
+      clocks are identical that both are provided.
+    minItems: 2
+    items:
+      - description: PLL0's refclk0
+      - description: PLL0's refclk1
+      - description: PLL1's refclk0
+      - description: PLL1's refclk1
+      - description: DLL0's refclk
+      - description: DLL1's refclk
+
+  clock-names:
+    minItems: 2
+    items:
+      - const: pll0_ref0
+      - const: pll0_ref1
+      - const: pll1_ref0
+      - const: pll1_ref1
+      - const: dll0_ref
+      - const: dll1_ref
+
+  '#clock-cells':
+    const: 1
+    description: |
+      The clock consumer should specify the desired clock by having the clock
+      ID in its "clocks" phandle cell.
+      See include/dt-bindings/clock/microchip,mpfs-clock.h for the full list of
+      PolarFire clock IDs.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@38100000 {
+        compatible = "microchip,mpfs-ccc";
+        reg = <0x38010000 0x1000>, <0x38020000 0x1000>,
+              <0x39010000 0x1000>, <0x39020000 0x1000>;
+        #clock-cells = <1>;
+        clocks = <&refclk_ccc>, <&refclk_ccc>, <&refclk_ccc>, <&refclk_ccc>,
+                  <&refclk_ccc>, <&refclk_ccc>;
+        clock-names = "pll0_ref0", "pll0_ref1", "pll1_ref0", "pll1_ref1",
+                      "dll0_ref", "dll1_ref";
+    };
diff --git a/Documentation/devicetree/bindings/clock/microchip,mpfs.yaml b/Documentation/devicetree/bindings/clock/microchip,mpfs-clkcfg.yaml
index 016a4f378b9b..b2ce78722247 100644
--- a/Documentation/devicetree/bindings/clock/microchip,mpfs.yaml
+++ b/Documentation/devicetree/bindings/clock/microchip,mpfs-clkcfg.yaml
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/clock/microchip,mpfs.yaml#
+$id: http://devicetree.org/schemas/clock/microchip,mpfs-clkcfg.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Microchip PolarFire Clock Control Module Binding
@@ -40,8 +40,21 @@ properties:
     const: 1
     description: |
       The clock consumer should specify the desired clock by having the clock
-      ID in its "clocks" phandle cell. See include/dt-bindings/clock/microchip,mpfs-clock.h
-      for the full list of PolarFire clock IDs.
+      ID in its "clocks" phandle cell.
+      See include/dt-bindings/clock/microchip,mpfs-clock.h for the full list of
+      PolarFire clock IDs.
+
+  resets:
+    maxItems: 1
+
+  '#reset-cells':
+    description:
+      The AHB/AXI peripherals on the PolarFire SoC have reset support, so from
+      CLK_ENVM to CLK_CFM. The reset consumer should specify the desired
+      peripheral via the clock ID in its "resets" phandle cell.
+      See include/dt-bindings/clock/microchip,mpfs-clock.h for the full list of
+      PolarFire clock IDs.
+    const: 1
 
 required:
   - compatible