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

Author: bebarino

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 <[email protected]>
+
+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";
+    };

Documentation/devicetree/bindings/clock/microchip,mpfs.yaml renamed to 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

MAINTAINERS

@@ -17532,6 +17532,7 @@ F:	drivers/char/hw_random/mpfs-rng.c
 F:	drivers/clk/microchip/clk-mpfs.c
 F:	drivers/mailbox/mailbox-mpfs.c
 F:	drivers/pci/controller/pcie-microchip-host.c
+F:	drivers/reset/reset-mpfs.c
 F:	drivers/rtc/rtc-mpfs.c
 F:	drivers/soc/microchip/
 F:	drivers/spi/spi-microchip-core.c

drivers/clk/at91/sama5d2.c

@@ -120,6 +120,16 @@ static const struct {
 	struct clk_range r;
 	int chg_pid;
 } sama5d2_gck[] = {
+	{ .n = "flx0_gclk",   .id = 19, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "flx1_gclk",   .id = 20, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "flx2_gclk",   .id = 21, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "flx3_gclk",   .id = 22, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "flx4_gclk",   .id = 23, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "uart0_gclk",  .id = 24, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "uart1_gclk",  .id = 25, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "uart2_gclk",  .id = 26, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "uart3_gclk",  .id = 27, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
+	{ .n = "uart4_gclk",  .id = 28, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
 	{ .n = "sdmmc0_gclk", .id = 31, .chg_pid = INT_MIN, },
 	{ .n = "sdmmc1_gclk", .id = 32, .chg_pid = INT_MIN, },
 	{ .n = "tcb0_gclk",   .id = 35, .chg_pid = INT_MIN, .r = { .min = 0, .max = 83000000 }, },

drivers/clk/microchip/Kconfig

@@ -6,5 +6,6 @@ config COMMON_CLK_PIC32
 config MCHP_CLK_MPFS
 	bool "Clk driver for PolarFire SoC"
 	depends on (RISCV && SOC_MICROCHIP_POLARFIRE) || COMPILE_TEST
+	select AUXILIARY_BUS
 	help
 	  Supports Clock Configuration for PolarFire SoC

drivers/clk/microchip/Makefile

@@ -2,3 +2,4 @@
 obj-$(CONFIG_COMMON_CLK_PIC32) += clk-core.o
 obj-$(CONFIG_PIC32MZDA) += clk-pic32mzda.o
 obj-$(CONFIG_MCHP_CLK_MPFS) += clk-mpfs.o
+obj-$(CONFIG_MCHP_CLK_MPFS) += clk-mpfs-ccc.o