Merge tag 'riscv-sg2042-clk-for-v6.11' of https://github.com/sophgo/linux into clk-sophgo

Pull RISC-V SG2042 clock driver changes from Chen Wang:

 - Add sg2042 clk driver

* tag 'riscv-sg2042-clk-for-v6.11' of https://github.com/sophgo/linux:
  clk: sophgo: Add SG2042 clock driver
  dt-bindings: clock: sophgo: add clkgen for SG2042
  dt-bindings: clock: sophgo: add RP gate clocks for SG2042
  dt-bindings: clock: sophgo: add pll clocks for SG2042

Author: bebarino

Documentation/devicetree/bindings/clock/sophgo,sg2042-clkgen.yaml

@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sophgo,sg2042-clkgen.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 Clock Generator for divider/mux/gate
+
+maintainers:
+  - Chen Wang <[email protected]>
+
+properties:
+  compatible:
+    const: sophgo,sg2042-clkgen
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Main PLL
+      - description: Fixed PLL
+      - description: DDR PLL 0
+      - description: DDR PLL 1
+
+  clock-names:
+    items:
+      - const: mpll
+      - const: fpll
+      - const: dpll0
+      - const: dpll1
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/sophgo,sg2042-clkgen.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@30012000 {
+      compatible = "sophgo,sg2042-clkgen";
+      reg = <0x30012000 0x1000>;
+      clocks = <&pllclk 0>,
+               <&pllclk 1>,
+               <&pllclk 2>,
+               <&pllclk 3>;
+      clock-names = "mpll",
+                    "fpll",
+                    "dpll0",
+                    "dpll1";
+      #clock-cells = <1>;
+    };

Documentation/devicetree/bindings/clock/sophgo,sg2042-pll.yaml

@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sophgo,sg2042-pll.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 PLL Clock Generator
+
+maintainers:
+  - Chen Wang <[email protected]>
+
+properties:
+  compatible:
+    const: sophgo,sg2042-pll
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Oscillator(Clock Generation IC) for Main/Fixed PLL (25 MHz)
+      - description: Oscillator(Clock Generation IC) for DDR PLL 0 (25 MHz)
+      - description: Oscillator(Clock Generation IC) for DDR PLL 1 (25 MHz)
+
+  clock-names:
+    items:
+      - const: cgi_main
+      - const: cgi_dpll0
+      - const: cgi_dpll1
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/sophgo,sg2042-pll.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@10000000 {
+      compatible = "sophgo,sg2042-pll";
+      reg = <0x10000000 0x10000>;
+      clocks = <&cgi_main>, <&cgi_dpll0>, <&cgi_dpll1>;
+      clock-names = "cgi_main", "cgi_dpll0", "cgi_dpll1";
+      #clock-cells = <1>;
+    };

Documentation/devicetree/bindings/clock/sophgo,sg2042-rpgate.yaml

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sophgo,sg2042-rpgate.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 Gate Clock Generator for RP(riscv processors) subsystem
+
+maintainers:
+  - Chen Wang <[email protected]>
+
+properties:
+  compatible:
+    const: sophgo,sg2042-rpgate
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Gate clock for RP subsystem
+
+  clock-names:
+    items:
+      - const: rpgate
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/sophgo,sg2042-rpgate.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@20000000 {
+      compatible = "sophgo,sg2042-rpgate";
+      reg = <0x20000000 0x10000>;
+      clocks = <&clkgen 85>;
+      clock-names = "rpgate";
+      #clock-cells = <1>;
+    };

drivers/clk/sophgo/Kconfig

@@ -9,3 +9,31 @@ config CLK_SOPHGO_CV1800
 	  The driver require a 25MHz Oscillator to function generate clock.
 	  It includes PLLs, common clock function and some vendor clock for
 	  IPs of CV18XX series SoC
+
+config CLK_SOPHGO_SG2042_PLL
+	tristate "Sophgo SG2042 PLL clock support"
+	depends on ARCH_SOPHGO || COMPILE_TEST
+	help
+	  This driver supports the PLL clock controller on the
+	  Sophgo SG2042 SoC. This clock IP uses three oscillators with
+	  frequency of 25 MHz as input, which are used for Main/Fixed
+	  PLL, DDR PLL 0 and DDR PLL 1 respectively.
+
+config CLK_SOPHGO_SG2042_CLKGEN
+	tristate "Sophgo SG2042 Clock Generator support"
+	depends on CLK_SOPHGO_SG2042_PLL
+	help
+	  This driver supports the Clock Generator on the
+	  Sophgo SG2042 SoC. This clock IP depends on SG2042 PLL clock
+	  because it uses PLL clocks as input.
+	  This driver provides clock function such as DIV/Mux/Gate.
+
+config CLK_SOPHGO_SG2042_RPGATE
+	tristate "Sophgo SG2042 RP subsystem clock controller support"
+	depends on CLK_SOPHGO_SG2042_CLKGEN
+	help
+	  This driver supports the RP((Riscv Processors)) subsystem clock
+	  controller on the Sophgo SG2042 SoC.
+	  This clock IP depends on SG2042 Clock Generator because it uses
+	  clock from Clock Generator IP as input.
+	  This driver provides Gate function for RP.

drivers/clk/sophgo/Makefile

@@ -5,3 +5,7 @@ clk-sophgo-cv1800-y		+= clk-cv1800.o
 clk-sophgo-cv1800-y		+= clk-cv18xx-common.o
 clk-sophgo-cv1800-y		+= clk-cv18xx-ip.o
 clk-sophgo-cv1800-y		+= clk-cv18xx-pll.o
+
+obj-$(CONFIG_CLK_SOPHGO_SG2042_CLKGEN)	+= clk-sg2042-clkgen.o
+obj-$(CONFIG_CLK_SOPHGO_SG2042_PLL)	+= clk-sg2042-pll.o
+obj-$(CONFIG_CLK_SOPHGO_SG2042_RPGATE)	+= clk-sg2042-rpgate.o