Merge tag 'devicetree-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:

 - Add Krzysztof Kozlowski as co-maintainer for DT bindings providing
   much needed help.

 - DT schema validation now takes DTB files as input rather than
   intermediate YAML files. This decouples the validation from the
   source level syntax information. There's a bunch of schema fixes as a
   result of switching to DTB based validation which exposed some errors
   and incomplete schemas and examples.

 - Kbuild improvements to explicitly warn users running 'make
   dt_binding_check' on missing yamllint

 - Expand DT_SCHEMA_FILES kbuild variable to take just a partial
   filename or path instead of the full path to 1 file.

 - Convert various bindings to schema format: mscc,vsc7514-switch,
   multiple GNSS bindings, ahci-platform, i2c-at91, multiple UFS
   bindings, cortina,gemini-sata-bridge, cortina,gemini-ethernet, Atmel
   SHA, Atmel TDES, Atmel AES, armv7m-systick, Samsung Exynos display
   subsystem, nuvoton,npcm7xx-timer, samsung,s3c2410-i2c, zynqmp_dma,
   msm/mdp4, rda,8810pl-uart

 - New schemas for u-boot environment variable partition, TI clksel

 - New compatible strings for Renesas RZ/V2L SoC

 - Vendor prefixes for Xen, HPE, deprecated Synopsys, deprecated
   HiSilicon

 - Add/fix schemas for QEMU Arm 'virt' machine

 - Drop unused of_alias_get_alias_list() function

 - Add a script to check DT unittest EXPECT message output. Pass
   messages also now print by default at PR_INFO level to help test
   automation.

* tag 'devicetree-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (96 commits)
  dt-bindings: kbuild: Make DT_SCHEMA_LINT a recursive variable
  dt-bindings: nvmem: add U-Boot environment variables binding
  dt-bindings: ufs: qcom: Add SM6350 compatible string
  dt-bindings: dmaengine: sifive,fu540-c000: include generic schema
  dt-bindings: gpio: pca95xx: drop useless consumer example
  Revert "of: base: Introduce of_alias_get_alias_list() to check alias IDs"
  dt-bindings: virtio,mmio: Allow setting devices 'dma-coherent'
  dt-bindings: gnss: Add two more chips
  dt-bindings: gnss: Rewrite sirfstar binding in YAML
  dt-bindings: gnss: Modify u-blox to use common bindings
  dt-bindings: gnss: Rewrite common bindings in YAML
  dt-bindings: ata: ahci-platform: Add rk3568-dwc-ahci compatible
  dt-bindings: ata: ahci-platform: Add power-domains property
  dt-bindings: ata: ahci-platform: Convert DT bindings to yaml
  dt-bindings: kbuild: Use DTB files for validation
  dt-bindings: kbuild: Pass DT_SCHEMA_FILES to dt-validate
  dt-bindings: Add QEMU virt machine compatible
  dt-bindings: arm: Convert QEMU fw-cfg to DT schema
  dt-bindings: i2c: at91: Add SAMA7G5 compatible strings list
  dt-bindings: i2c: convert i2c-at91 to json-schema
  ...

3 files changed, 59 insertions, 3 deletions

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index 590743883802..948e2a38beed 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -364,7 +364,7 @@ examples:
     firmware {
         scmi {
             compatible = "arm,scmi-smc";
-            shmem = <&cpu_scp_lpri0 &cpu_scp_lpri1>;
+            shmem = <&cpu_scp_lpri0>, <&cpu_scp_lpri1>;
             arm,smc-id = <0xc3000001>;
 
             #address-cells = <1>;
diff --git a/Documentation/devicetree/bindings/firmware/arm,scpi.yaml b/Documentation/devicetree/bindings/firmware/arm,scpi.yaml
index 23b346bd1252..1f9322925e7c 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scpi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scpi.yaml
@@ -43,6 +43,7 @@ properties:
       by remote SCP firmware for use by SCPI message protocol should be
       specified in any order.
     minItems: 1
+    maxItems: 4
 
   shmem:
     description:
@@ -51,6 +52,7 @@ properties:
       be any memory reserved for the purpose of this communication between the
       processors.
     minItems: 1
+    maxItems: 4
 
   power-controller:
     type: object
@@ -235,8 +237,8 @@ examples:
     firmware {
         scpi {
             compatible = "amlogic,meson-gxbb-scpi", "arm,scpi-pre-1.0";
-            mboxes = <&mailbox 1 &mailbox 2>;
-            shmem = <&cpu_scp_lpri &cpu_scp_hpri>;
+            mboxes = <&mailbox 1>, <&mailbox 2>;
+            shmem = <&cpu_scp_lpri>, <&cpu_scp_hpri>;
 
             scpi_sensors1: sensors {
                 compatible = "amlogic,meson-gxbb-scpi-sensors", "arm,scpi-sensors";
diff --git a/Documentation/devicetree/bindings/firmware/qemu,fw-cfg-mmio.yaml b/Documentation/devicetree/bindings/firmware/qemu,fw-cfg-mmio.yaml
new file mode 100644
index 000000000000..fcf0011b8e6d
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/qemu,fw-cfg-mmio.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/qemu,fw-cfg-mmio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QEMU Firmware Configuration bindings
+
+maintainers:
+  - Rob Herring <robh@kernel.org>
+
+description: |
+  Various QEMU emulation / virtualization targets provide the following
+  Firmware Configuration interface on the "virt" machine type:
+
+  - A write-only, 16-bit wide selector (or control) register,
+  - a read-write, 64-bit wide data register.
+
+  QEMU exposes the control and data register to guests as memory mapped
+  registers; their location is communicated to the guest's UEFI firmware in the
+  DTB that QEMU places at the bottom of the guest's DRAM.
+
+  The authoritative guest-side hardware interface documentation to the fw_cfg
+  device can be found in "docs/specs/fw_cfg.txt" in the QEMU source tree.
+
+
+properties:
+  compatible:
+    const: qemu,fw-cfg-mmio
+
+  reg:
+    maxItems: 1
+    description: |
+      * Bytes 0x0 to 0x7 cover the data register.
+      * Bytes 0x8 to 0x9 cover the selector register.
+      * Further registers may be appended to the region in case of future interface
+        revisions / feature bits.
+
+  dma-coherent: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+
+    fw-cfg@9020000 {
+        compatible = "qemu,fw-cfg-mmio";
+        reg = <0x9020000 0xa>;
+    };
+...