RISC-V: Canaan devicetree fixes

This series should rid us of dtbs_check errors for the RISC-V Canaan
k210 based boards. To make keeping it that way a little easier, I
changed the Canaan devicetree Makefile so that it would build all of the
devicetrees in the directory if SOC_CANAAN.

Link: https://lore.kernel.org/all/mhng-85044754-c361-40bc-a6a2-7082f35930bb@palmer-ri-x1c9/

* remotes/palmer/riscv-canaan_dt_schema:
  riscv: dts: canaan: build all devicetress if SOC_CANAAN
  riscv: dts: canaan: add specific compatible for kd233's LCD
  riscv: dts: canaan: fix bus {ranges,reg} warnings
  riscv: dts: canaan: remove spi-max-frequency from controllers
  riscv: dts: canaan: use custom compatible for k210 i2s
  riscv: dts: canaan: fix kd233 display spi frequency
  riscv: dts: canaan: fix mmc node names
  riscv: dts: canaan: fix the k210's timer nodes
  riscv: dts: canaan: fix the k210's memory node
  dt-bindings: memory-controllers: add canaan k210 sram controller
  dt-bindings: display: ili9341: document canaan kd233's lcd
  dt-bindings: display: convert ilitek,ili9341.txt to dt-schema

1 files changed, 52 insertions, 0 deletions

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";
+    };