dt-bindings: riscv: sifive: add YAML documentation for the SiFive FU540

Add YAML DT binding documentation for the SiFive FU540 SoC.  This
SoC is documented at:

    https://static.dev.sifive.com/FU540-C000-v1.0.pdf

Passes dt-doc-validate, as of yaml-bindings commit 4c79d42e9216.

Signed-off-by: Paul Walmsley <[email protected]>
Signed-off-by: Paul Walmsley <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Albert Ou <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]

2 files changed, 34 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/riscv/sifive.yaml b/Documentation/devicetree/bindings/riscv/sifive.yaml
new file mode 100644
index 000000000000..9d17dc2f3f84
--- /dev/null
+++ b/Documentation/devicetree/bindings/riscv/sifive.yaml
@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: (GPL-2.0 OR MIT)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/sifive.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive SoC-based boards
+
+maintainers:
+  - Paul Walmsley <[email protected]>
+  - Palmer Dabbelt <[email protected]>
+
+description:
+  SiFive SoC-based boards
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    items:
+      - enum:
+          - sifive,freedom-unleashed-a00
+      - const: sifive,fu540-c000
+      - const: sifive,fu540
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 5cfbea4ce575..8a64051cf5fc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14322,6 +14322,15 @@ S:	Supported
 K:	sifive
 N:	sifive
 
+SIFIVE FU540 SYSTEM-ON-CHIP
+M:	Paul Walmsley <[email protected]>
+M:	Palmer Dabbelt <[email protected]>
+L:	[email protected]
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pjw/sifive.git
+S:	Supported
+K:	fu540
+N:	fu540
+
 SILEAD TOUCHSCREEN DRIVER
 M:	Hans de Goede <[email protected]>
 L:	[email protected]