Merge tag 'newsoc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull RISC-V SoC updates from Arnd Bergmann:
 "Add support for StarFive JH7100 RISC-V SoC

  This adds support for the StarFive JH7100, including the necessary
  device drivers and DT files for the BeagleV Starlight prototype board,
  with additional boards to be added later. This SoC promises to be the
  first usable low-cost platform for RISC-V.

  I've taken this through the SoC tree in the anticipation of adding a
  few other Arm based SoCs as well, but those did not pass the review in
  time, so it's only this one"

* tag 'newsoc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  reset: starfive-jh7100: Fix 32bit compilation
  RISC-V: Add BeagleV Starlight Beta device tree
  RISC-V: Add initial StarFive JH7100 device tree
  serial: 8250_dw: Add StarFive JH7100 quirk
  dt-bindings: serial: snps-dw-apb-uart: Add JH7100 uarts
  pinctrl: starfive: Add pinctrl driver for StarFive SoCs
  dt-bindings: pinctrl: Add StarFive JH7100 bindings
  dt-bindings: pinctrl: Add StarFive pinctrl definitions
  reset: starfive-jh7100: Add StarFive JH7100 reset driver
  dt-bindings: reset: Add Starfive JH7100 reset bindings
  dt-bindings: reset: Add StarFive JH7100 reset definitions
  clk: starfive: Add JH7100 clock generator driver
  dt-bindings: clock: starfive: Add JH7100 bindings
  dt-bindings: clock: starfive: Add JH7100 clock definitions
  dt-bindings: interrupt-controller: Add StarFive JH7100 plic
  dt-bindings: timer: Add StarFive JH7100 clint
  RISC-V: Add StarFive SoC Kconfig option

6 files changed, 408 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/clock/starfive,jh7100-clkgen.yaml b/Documentation/devicetree/bindings/clock/starfive,jh7100-clkgen.yaml
new file mode 100644
index 000000000000..12f17b60ecbe
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/starfive,jh7100-clkgen.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/starfive,jh7100-clkgen.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7100 Clock Generator
+
+maintainers:
+  - Geert Uytterhoeven <geert@linux-m68k.org>
+  - Emil Renner Berthing <kernel@esmil.dk>
+
+properties:
+  compatible:
+    const: starfive,jh7100-clkgen
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Main clock source (25 MHz)
+      - description: Application-specific clock source (12-27 MHz)
+      - description: RMII reference clock (50 MHz)
+      - description: RGMII RX clock (125 MHz)
+
+  clock-names:
+    items:
+      - const: osc_sys
+      - const: osc_aud
+      - const: gmac_rmii_ref
+      - const: gmac_gr_mii_rxclk
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/starfive-jh7100.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@11800000 {
+            compatible = "starfive,jh7100-clkgen";
+            reg = <0x11800000 0x10000>;
+            clocks = <&osc_sys>, <&osc_aud>, <&gmac_rmii_ref>, <&gmac_gr_mii_rxclk>;
+            clock-names = "osc_sys", "osc_aud", "gmac_rmii_ref", "gmac_gr_mii_rxclk";
+            #clock-cells = <1>;
+    };
diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
index 08d5a57ce00f..28b6b17fe4b2 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
@@ -45,6 +45,7 @@ properties:
     items:
       - enum:
           - sifive,fu540-c000-plic
+          - starfive,jh7100-plic
           - canaan,k210-plic
       - const: sifive,plic-1.0.0
 
diff --git a/Documentation/devicetree/bindings/pinctrl/starfive,jh7100-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/starfive,jh7100-pinctrl.yaml
new file mode 100644
index 000000000000..92963604422f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/starfive,jh7100-pinctrl.yaml
@@ -0,0 +1,307 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/starfive,jh7100-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7100 Pin Controller Device Tree Bindings
+
+description: |
+  Bindings for the JH7100 RISC-V SoC from StarFive Ltd.
+
+  Out of the SoC's many pins only the ones named PAD_GPIO[0] to PAD_GPIO[63]
+  and PAD_FUNC_SHARE[0] to PAD_FUNC_SHARE[141] can be multiplexed and have
+  configurable bias, drive strength, schmitt trigger etc. The SoC has an
+  interesting 2-layered approach to pin muxing best illustrated by the diagram
+  below.
+
+                          Signal group 0, 1, ... or 6
+                                 ___|___
+                                |       |
+    LCD output -----------------|       |
+    CMOS Camera interface ------|       |--- PAD_GPIO[0]
+    Ethernet PHY interface -----|  MUX  |--- PAD_GPIO[1]
+      ...                       |       |      ...
+                                |       |--- PAD_GPIO[63]
+     -------- GPIO0 ------------|       |
+    |  -------|-- GPIO1 --------|       |--- PAD_FUNC_SHARE[0]
+    | |       |   |             |       |--- PAD_FUNC_SHARE[1]
+    | |       |   |  ...        |       |       ...
+    | |       |   |             |       |--- PAD_FUNC_SHARE[141]
+    | |  -----|---|-- GPIO63 ---|       |
+    | | |     |   |   |          -------
+    UART0     UART1 --
+
+
+  The big MUX in the diagram only has 7 different ways of mapping peripherals
+  on the left to pins on the right. StarFive calls the 7 configurations "signal
+  groups".
+  However some peripherals have their I/O go through the 64 "GPIOs". The
+  diagram only shows UART0 and UART1, but this also includes a number of other
+  UARTs, I2Cs, SPIs, PWMs etc. All these peripherals are connected to all 64
+  GPIOs such that any GPIO can be set up to be controlled by any of the
+  peripherals.
+  Note that signal group 0 doesn't map any of the GPIOs to pins, and only
+  signal group 1 maps the GPIOs to the pins named PAD_GPIO[0] to PAD_GPIO[63].
+
+maintainers:
+  - Emil Renner Berthing <kernel@esmil.dk>
+  - Drew Fustini <drew@beagleboard.org>
+
+properties:
+  compatible:
+    const: starfive,jh7100-pinctrl
+
+  reg:
+    minItems: 2
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: gpio
+      - const: padctl
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
+    description: The GPIO parent interrupt.
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  starfive,signal-group:
+    description: |
+      Select one of the 7 signal groups. If this property is not set it
+      defaults to the configuration already chosen by the earlier boot stages.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3, 4, 5, 6]
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - gpio-controller
+  - "#gpio-cells"
+  - interrupts
+  - interrupt-controller
+  - "#interrupt-cells"
+
+patternProperties:
+  '-[0-9]+$':
+    type: object
+    patternProperties:
+      '-pins$':
+        type: object
+        description: |
+          A pinctrl node should contain at least one subnode representing the
+          pinctrl groups available on the machine. Each subnode will list the
+          pins it needs, and how they should be configured, with regard to
+          muxer configuration, bias, input enable/disable, input schmitt
+          trigger enable/disable, slew-rate and drive strength.
+        $ref: "/schemas/pinctrl/pincfg-node.yaml"
+
+        properties:
+          pins:
+            description: |
+              The list of pin identifiers that properties in the node apply to.
+              This should be set using either the PAD_GPIO or PAD_FUNC_SHARE
+              macros.
+              Either this or "pinmux" has to be specified, but not both.
+            $ref: "/schemas/pinctrl/pinmux-node.yaml#/properties/pins"
+
+          pinmux:
+            description: |
+              The list of GPIOs and their mux settings that properties in the
+              node apply to. This should be set using the GPIOMUX macro.
+              Either this or "pins" has to be specified, but not both.
+            $ref: "/schemas/pinctrl/pinmux-node.yaml#/properties/pinmux"
+
+          bias-disable: true
+
+          bias-pull-up:
+            type: boolean
+
+          bias-pull-down:
+            type: boolean
+
+          drive-strength:
+            enum: [ 14, 21, 28, 35, 42, 49, 56, 63 ]
+
+          input-enable: true
+
+          input-disable: true
+
+          input-schmitt-enable: true
+
+          input-schmitt-disable: true
+
+          slew-rate:
+            maximum: 7
+
+          starfive,strong-pull-up:
+            description: enable strong pull-up.
+            type: boolean
+
+        additionalProperties: false
+
+    additionalProperties: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/starfive-jh7100.h>
+    #include <dt-bindings/reset/starfive-jh7100.h>
+    #include <dt-bindings/pinctrl/pinctrl-starfive.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pinctrl@11910000 {
+            compatible = "starfive,jh7100-pinctrl";
+            reg = <0x0 0x11910000 0x0 0x10000>,
+                  <0x0 0x11858000 0x0 0x1000>;
+            reg-names = "gpio", "padctl";
+            clocks = <&clkgen JH7100_CLK_GPIO_APB>;
+            resets = <&clkgen JH7100_RSTN_GPIO_APB>;
+            interrupts = <32>;
+            gpio-controller;
+            #gpio-cells = <2>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+            starfive,signal-group = <6>;
+
+            gmac_pins_default: gmac-0 {
+                gtxclk-pins {
+                    pins = <PAD_FUNC_SHARE(115)>;
+                    bias-pull-up;
+                    drive-strength = <35>;
+                    input-enable;
+                    input-schmitt-enable;
+                    slew-rate = <0>;
+                };
+                miitxclk-pins {
+                    pins = <PAD_FUNC_SHARE(116)>;
+                    bias-pull-up;
+                    drive-strength = <14>;
+                    input-enable;
+                    input-schmitt-disable;
+                    slew-rate = <0>;
+                };
+                tx-pins {
+                    pins = <PAD_FUNC_SHARE(117)>,
+                           <PAD_FUNC_SHARE(119)>,
+                           <PAD_FUNC_SHARE(120)>,
+                           <PAD_FUNC_SHARE(121)>,
+                           <PAD_FUNC_SHARE(122)>,
+                           <PAD_FUNC_SHARE(123)>,
+                           <PAD_FUNC_SHARE(124)>,
+                           <PAD_FUNC_SHARE(125)>,
+                           <PAD_FUNC_SHARE(126)>;
+                    bias-disable;
+                    drive-strength = <35>;
+                    input-disable;
+                    input-schmitt-disable;
+                    slew-rate = <0>;
+                };
+                rxclk-pins {
+                    pins = <PAD_FUNC_SHARE(127)>;
+                    bias-pull-up;
+                    drive-strength = <14>;
+                    input-enable;
+                    input-schmitt-disable;
+                    slew-rate = <6>;
+                };
+                rxer-pins {
+                    pins = <PAD_FUNC_SHARE(129)>;
+                    bias-pull-up;
+                    drive-strength = <14>;
+                    input-enable;
+                    input-schmitt-disable;
+                    slew-rate = <0>;
+                };
+                rx-pins {
+                    pins = <PAD_FUNC_SHARE(128)>,
+                           <PAD_FUNC_SHARE(130)>,
+                           <PAD_FUNC_SHARE(131)>,
+                           <PAD_FUNC_SHARE(132)>,
+                           <PAD_FUNC_SHARE(133)>,
+                           <PAD_FUNC_SHARE(134)>,
+                           <PAD_FUNC_SHARE(135)>,
+                           <PAD_FUNC_SHARE(136)>,
+                           <PAD_FUNC_SHARE(137)>,
+                           <PAD_FUNC_SHARE(138)>,
+                           <PAD_FUNC_SHARE(139)>,
+                           <PAD_FUNC_SHARE(140)>,
+                           <PAD_FUNC_SHARE(141)>;
+                    bias-pull-up;
+                    drive-strength = <14>;
+                    input-enable;
+                    input-schmitt-enable;
+                    slew-rate = <0>;
+                };
+            };
+
+            i2c0_pins_default: i2c0-0 {
+                i2c-pins {
+                    pinmux = <GPIOMUX(62, GPO_LOW,
+                              GPO_I2C0_PAD_SCK_OEN,
+                              GPI_I2C0_PAD_SCK_IN)>,
+                             <GPIOMUX(61, GPO_LOW,
+                              GPO_I2C0_PAD_SDA_OEN,
+                              GPI_I2C0_PAD_SDA_IN)>;
+                    bias-disable; /* external pull-up */
+                    input-enable;
+                    input-schmitt-enable;
+                };
+            };
+
+            uart3_pins_default: uart3-0 {
+                rx-pins {
+                    pinmux = <GPIOMUX(13, GPO_LOW, GPO_DISABLE,
+                              GPI_UART3_PAD_SIN)>;
+                    bias-pull-up;
+                    input-enable;
+                    input-schmitt-enable;
+                };
+                tx-pins {
+                    pinmux = <GPIOMUX(14, GPO_UART3_PAD_SOUT,
+                              GPO_ENABLE, GPI_NONE)>;
+                    bias-disable;
+                    input-disable;
+                    input-schmitt-disable;
+                };
+            };
+        };
+
+        gmac {
+            pinctrl-0 = <&gmac_pins_default>;
+            pinctrl-names = "default";
+        };
+
+        i2c0 {
+            pinctrl-0 = <&i2c0_pins_default>;
+            pinctrl-names = "default";
+        };
+
+        uart3 {
+            pinctrl-0 = <&uart3_pins_default>;
+            pinctrl-names = "default";
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/reset/starfive,jh7100-reset.yaml b/Documentation/devicetree/bindings/reset/starfive,jh7100-reset.yaml
new file mode 100644
index 000000000000..300359a5e14b
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/starfive,jh7100-reset.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/starfive,jh7100-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7100 SoC Reset Controller Device Tree Bindings
+
+maintainers:
+  - Emil Renner Berthing <kernel@esmil.dk>
+
+properties:
+  compatible:
+    enum:
+      - starfive,jh7100-reset
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@11840000 {
+        compatible = "starfive,jh7100-reset";
+        reg = <0x11840000 0x10000>;
+        #reset-cells = <1>;
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
index b49fda5e608f..12137fe80acf 100644
--- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -40,6 +40,11 @@ properties:
               - brcm,bcm11351-dw-apb-uart
               - brcm,bcm21664-dw-apb-uart
           - const: snps,dw-apb-uart
+      - items:
+          - enum:
+              - starfive,jh7100-hsuart
+              - starfive,jh7100-uart
+          - const: snps,dw-apb-uart
       - const: snps,dw-apb-uart
 
   reg:
diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
index a35952f48742..8d5f4687add9 100644
--- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
+++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
@@ -25,6 +25,7 @@ properties:
     items:
       - enum:
           - sifive,fu540-c000-clint
+          - starfive,jh7100-clint
           - canaan,k210-clint
       - const: sifive,clint0