Merge tag 'riscv-for-linus-5.20-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:
 "There's still a handful of new features in here, but there are a lot
  of fixes/cleanups as well:

   - Support for the Zicbom extension for explicit cache-block
     management, along with the necessary bits to make the non-standard
     cache management ops on the Allwinner D1 function

   - Support for the Zihintpause extension, which codifies a go-slow
     instruction used for cpu_relax()

   - Support for the Sstc extension for supervisor-mode timer/counter
     management

   - Many device tree fixes and cleanups, including a large set for the
     Canaan device trees

   - A handful of fixes and cleanups for the PMU driver"

* tag 'riscv-for-linus-5.20-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (43 commits)
  dt-bindings: gpio: sifive: add gpio-line-names
  wireguard: selftests: set CONFIG_NONPORTABLE on riscv32
  RISC-V: KVM: Support sstc extension
  RISC-V: Improve SBI definitions
  RISC-V: Move counter info definition to sbi header file
  RISC-V: Fix SBI PMU calls for RV32
  RISC-V: Update user page mapping only once during start
  RISC-V: Fix counter restart during overflow for RV32
  RISC-V: Prefer sstc extension if available
  RISC-V: Enable sstc extension parsing from DT
  RISC-V: Add SSTC extension CSR details
  riscv:uprobe fix SR_SPIE set/clear handling
  dt-bindings: riscv: fix SiFive l2-cache's cache-sets
  riscv: ensure cpu_ops_sbi is declared
  RISC-V: cpu_ops_spinwait.c should include head.h
  RISC-V: Declare cpu_ops_spinwait in <asm/cpu_ops.h>
  riscv: dts: starfive: correct number of external interrupts
  riscv: dts: sifive unmatched: Add PWM controlled LEDs
  riscv/purgatory: Omit use of bin2c
  riscv/purgatory: hard-code obj-y in Makefile
  ...

6 files changed, 101 insertions, 42 deletions

diff --git a/Documentation/devicetree/bindings/display/ilitek,ili9341.txt b/Documentation/devicetree/bindings/display/ilitek,ili9341.txt
deleted file mode 100644
index 169b32e4ee4e..000000000000
--- a/Documentation/devicetree/bindings/display/ilitek,ili9341.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-Ilitek ILI9341 display panels
-
-This binding is for display panels using an Ilitek ILI9341 controller in SPI
-mode.
-
-Required properties:
-- compatible:	"adafruit,yx240qv29", "ilitek,ili9341"
-- dc-gpios:	D/C pin
-- reset-gpios:	Reset pin
-
-The node for this driver must be a child node of a SPI controller, hence
-all mandatory properties described in ../spi/spi-bus.txt must be specified.
-
-Optional properties:
-- rotation:	panel rotation in degrees counter clockwise (0,90,180,270)
-- backlight:	phandle of the backlight device attached to the panel
-
-Example:
-	display@0{
-		compatible = "adafruit,yx240qv29", "ilitek,ili9341";
-		reg = <0>;
-		spi-max-frequency = <32000000>;
-		dc-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
-		reset-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
-		rotation = <270>;
-		backlight = <&backlight>;
-	};
diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.yaml
index 6058948a9764..99e0cb9440cf 100644
--- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.yaml
+++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.yaml
@@ -21,8 +21,10 @@ properties:
   compatible:
     items:
       - enum:
+          - adafruit,yx240qv29
           # ili9341 240*320 Color on stm32f429-disco board
           - st,sf-tc240t-9370-t
+          - canaan,kd233-tft
       - const: ilitek,ili9341
 
   reg: true
@@ -47,31 +49,50 @@ properties:
   vddi-led-supply:
     description: Voltage supply for the LED driver (1.65 .. 3.3 V)
 
-additionalProperties: false
+unevaluatedProperties: false
 
 required:
   - compatible
   - reg
   - dc-gpios
-  - port
+
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - st,sf-tc240t-9370-t
+then:
+  required:
+    - port
 
 examples:
   - |+
+    #include <dt-bindings/gpio/gpio.h>
     spi {
         #address-cells = <1>;
         #size-cells = <0>;
         panel: display@0 {
-                 compatible = "st,sf-tc240t-9370-t",
-                              "ilitek,ili9341";
-                 reg = <0>;
-                 spi-3wire;
-                 spi-max-frequency = <10000000>;
-                 dc-gpios = <&gpiod 13 0>;
-                 port {
-                         panel_in: endpoint {
-                           remote-endpoint = <&display_out>;
-                      };
-                 };
-             };
+            compatible = "st,sf-tc240t-9370-t",
+                         "ilitek,ili9341";
+            reg = <0>;
+            spi-3wire;
+            spi-max-frequency = <10000000>;
+            dc-gpios = <&gpiod 13 0>;
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&display_out>;
+                };
+            };
+        };
+        display@1{
+            compatible = "adafruit,yx240qv29", "ilitek,ili9341";
+            reg = <1>;
+            spi-max-frequency = <10000000>;
+            dc-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
+            reset-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
+            rotation = <270>;
+            backlight = <&backlight>;
         };
+    };
 ...
diff --git a/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
index 939e31c48081..fc095646adea 100644
--- a/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/sifive,gpio.yaml
@@ -46,6 +46,10 @@ properties:
     maximum: 32
     default: 16
 
+  gpio-line-names:
+    minItems: 1
+    maxItems: 32
+
   gpio-controller: true
 
 required:
diff --git a/Documentation/devicetree/bindings/memory-controllers/canaan,k210-sram.yaml b/Documentation/devicetree/bindings/memory-controllers/canaan,k210-sram.yaml
new file mode 100644
index 000000000000..f81fb866e319
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/canaan,k210-sram.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/canaan,k210-sram.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Canaan K210 SRAM memory controller
+
+description:
+  The Canaan K210 SRAM memory controller is responsible for the system's 8 MiB
+  of SRAM. The controller is initialised by the bootloader, which configures
+  its clocks, before OS bringup.
+
+maintainers:
+  - Conor Dooley <conor@kernel.org>
+
+properties:
+  compatible:
+    enum:
+      - canaan,k210-sram
+
+  clocks:
+    minItems: 1
+    items:
+      - description: sram0 clock
+      - description: sram1 clock
+      - description: aisram clock
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: sram0
+      - const: sram1
+      - const: aisram
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/k210-clk.h>
+    memory-controller {
+        compatible = "canaan,k210-sram";
+        clocks = <&sysclk K210_CLK_SRAM0>,
+                 <&sysclk K210_CLK_SRAM1>,
+                 <&sysclk K210_CLK_AI>;
+        clock-names = "sram0", "sram1", "aisram";
+    };
diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index d632ac76532e..873dd12f6e89 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -63,6 +63,11 @@ properties:
       - riscv,sv48
       - riscv,none
 
+  riscv,cbom-block-size:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The blocksize in bytes for the Zicbom cache operations.
+
   riscv,isa:
     description:
       Identifies the specific RISC-V instruction set architecture
diff --git a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
index e2d330bd4608..69cdab18d629 100644
--- a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
+++ b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
@@ -46,7 +46,7 @@ properties:
     const: 2
 
   cache-sets:
-    const: 1024
+    enum: [1024, 2048]
 
   cache-size:
     const: 2097152
@@ -84,6 +84,8 @@ then:
       description: |
         Must contain entries for DirError, DataError and DataFail signals.
       maxItems: 3
+    cache-sets:
+      const: 1024
 
 else:
   properties:
@@ -91,6 +93,8 @@ else:
       description: |
         Must contain entries for DirError, DataError, DataFail, DirFail signals.
       minItems: 4
+    cache-sets:
+      const: 2048
 
 additionalProperties: false