Merge tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:
 "A handful of new RISC-V related patches for this merge window:

   - A check to ensure drivers are properly using uaccess. This isn't
     manifesting with any of the drivers I'm currently using, but may
     catch errors in new drivers.

   - Some preliminary support for the FU740, along with the HiFive
     Unleashed it will appear on.

   - NUMA support for RISC-V, which involves making the arm64 code
     generic.

   - Support for kasan on the vmalloc region.

   - A handful of new drivers for the Kendryte K210, along with the DT
     plumbing required to boot on a handful of K210-based boards.

   - Support for allocating ASIDs.

   - Preliminary support for kernels larger than 128MiB.

   - Various other improvements to our KASAN support, including the
     utilization of huge pages when allocating the KASAN regions.

  We may have already found a bug with the KASAN_VMALLOC code, but it's
  passing my tests. There's a fix in the works, but that will probably
  miss the merge window.

* tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (75 commits)
  riscv: Improve kasan population by using hugepages when possible
  riscv: Improve kasan population function
  riscv: Use KASAN_SHADOW_INIT define for kasan memory initialization
  riscv: Improve kasan definitions
  riscv: Get rid of MAX_EARLY_MAPPING_SIZE
  soc: canaan: Sort the Makefile alphabetically
  riscv: Disable KSAN_SANITIZE for vDSO
  riscv: Remove unnecessary declaration
  riscv: Add Canaan Kendryte K210 SD card defconfig
  riscv: Update Canaan Kendryte K210 defconfig
  riscv: Add Kendryte KD233 board device tree
  riscv: Add SiPeed MAIXDUINO board device tree
  riscv: Add SiPeed MAIX GO board device tree
  riscv: Add SiPeed MAIX DOCK board device tree
  riscv: Add SiPeed MAIX BiT board device tree
  riscv: Update Canaan Kendryte K210 device tree
  dt-bindings: add resets property to dw-apb-timer
  dt-bindings: fix sifive gpio properties
  dt-bindings: update sifive uart compatible string
  dt-bindings: update sifive clint compatible string
  ...

1 files changed, 109 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml b/Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml
new file mode 100644
index 000000000000..c24ad45cabb5
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml
@@ -0,0 +1,109 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/canaan,k210-sysctl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Canaan Kendryte K210 System Controller Device Tree Bindings
+
+maintainers:
+  - Damien Le Moal <damien.lemoal@wdc.com>
+
+description:
+  Canaan Inc. Kendryte K210 SoC system controller which provides a
+  register map for controlling the clocks, reset signals and pin power
+  domains of the SoC.
+
+properties:
+  compatible:
+    items:
+      - const: canaan,k210-sysctl
+      - const: syscon
+      - const: simple-mfd
+
+  clocks:
+    maxItems: 1
+    description:
+      System controller Advanced Power Bus (APB) interface clock source.
+
+  clock-names:
+    items:
+      - const: pclk
+
+  reg:
+    maxItems: 1
+
+  clock-controller:
+    # Child node
+    type: object
+    $ref: "../clock/canaan,k210-clk.yaml"
+    description:
+      Clock controller for the SoC clocks. This child node definition
+      should follow the bindings specified in
+      Documentation/devicetree/bindings/clock/canaan,k210-clk.yaml.
+
+  reset-controller:
+    # Child node
+    type: object
+    $ref: "../reset/canaan,k210-rst.yaml"
+    description:
+      Reset controller for the SoC. This child node definition
+      should follow the bindings specified in
+      Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml.
+
+  syscon-reboot:
+    # Child node
+    type: object
+    $ref: "../power/reset/syscon-reboot.yaml"
+    description:
+      Reboot method for the SoC. This child node definition
+      should follow the bindings specified in
+      Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml.
+
+required:
+  - compatible
+  - clocks
+  - reg
+  - clock-controller
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/k210-clk.h>
+    #include <dt-bindings/reset/k210-rst.h>
+
+    clocks {
+      in0: oscllator {
+        compatible = "fixed-clock";
+        #clock-cells = <0>;
+        clock-frequency = <26000000>;
+      };
+    };
+
+    sysctl: syscon@50440000 {
+      compatible = "canaan,k210-sysctl",
+                   "syscon", "simple-mfd";
+      reg = <0x50440000 0x100>;
+      clocks = <&sysclk K210_CLK_APB1>;
+      clock-names = "pclk";
+
+      sysclk: clock-controller {
+        #clock-cells = <1>;
+        compatible = "canaan,k210-clk";
+        clocks = <&in0>;
+      };
+
+      sysrst: reset-controller {
+        compatible = "canaan,k210-rst";
+        #reset-cells = <1>;
+      };
+
+      reboot: syscon-reboot {
+        compatible = "syscon-reboot";
+        regmap = <&sysctl>;
+        offset = <48>;
+        mask = <1>;
+        value = <1>;
+      };
+    };