Merge tag 'devicetree-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree updates from Rob Herring:

 - DT schemas for PWM, syscon, power domains, SRAM, syscon-reboot,
   syscon-poweroff, renesas-irqc, simple-pm-bus, renesas-bsc, pwm-rcar,
   Renesas tpu, at24 eeprom, rtc-sh, Allwinner PS/2, sharp,ld-d5116z01b
   panel, Arm SMMU, max77650, Meson CEC, Amlogic canvas and DWC3 glue,
   Allwinner A10 mUSB and CAN, TI Davinci MDIO, QCom QCS404
   interconnect, Unisoc/Spreadtrum SoCs and UART

 - Convert a bunch of Samsung bindings to DT schema

 - Convert a bunch of ST stm32 bindings to DT schema

 - Realtek and Exynos additions to Arm Mali bindings

 - Fix schema errors in RiscV CPU schema

 - Various schema fixes from improved meta-schema checks

 - Improve the handling of 'dma-ranges' and in particular fix DMA mask
   setup on PCI bridges

 - Fix a memory leak in add_changeset_property() and DT unit tests.

 - Several documentation improvements for schema validation

 - Rework build rules to improve schema validation errors

 - Color output for dtx_diff

* tag 'devicetree-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (138 commits)
  libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h
  dt-bindings: arm: Remove leftover axentia.txt
  of: unittest: fix memory leak in attach_node_and_children
  of: overlay: add_changeset_property() memory leak
  dt-bindings: interrupt-controller: arm,gic-v3: Add missing type to interrupt-partition-* nodes
  dt-bindings: firmware: ixp4xx: Drop redundant minItems/maxItems
  dt-bindings: power: Rename back power_domain.txt bindings to fix references
  dt-bindings: i2c: stm32: Migrate i2c-stm32 documentation to yaml
  dt-bindings: mtd: Convert stm32 fmc2-nand bindings to json-schema
  dt-bindings: remoteproc: convert stm32-rproc to json-schema
  dt-bindings: mailbox: convert stm32-ipcc to json-schema
  dt-bindings: mfd: Convert stm32 low power timers bindings to json-schema
  dt-bindings: interrupt-controller: Convert stm32-exti to json-schema
  dt-bindings: crypto: Convert stm32 HASH bindings to json-schema
  dt-bindings: rng: Convert stm32 RNG bindings to json-schema
  dt-bindings: pwm: Convert Samsung PWM bindings to json-schema
  dt-bindings: pwm: Convert PWM bindings to json-schema
  dt-bindings: serial: Add a new compatible string for SC9863A
  dt-bindings: serial: Convert sprd-uart to json-schema
  dt-bindings: arm: Add bindings for Unisoc SC9863A
  ...

1 files changed, 84 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mailbox/st,stm32-ipcc.yaml b/Documentation/devicetree/bindings/mailbox/st,stm32-ipcc.yaml
new file mode 100644
index 000000000000..5b13d6672996
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/st,stm32-ipcc.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/mailbox/st,stm32-ipcc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: STMicroelectronics STM32 IPC controller bindings
+
+description:
+  The IPCC block provides a non blocking signaling mechanism to post and
+  retrieve messages in an atomic way between two processors.
+  It provides the signaling for N bidirectionnal channels. The number of
+  channels (N) can be read from a dedicated register.
+
+maintainers:
+  - Fabien Dessenne <fabien.dessenne@st.com>
+  - Arnaud Pouliquen <arnaud.pouliquen@st.com>
+
+properties:
+  compatible:
+    const: st,stm32mp1-ipcc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+     maxItems: 1
+
+  interrupts:
+    items:
+      - description: rx channel occupied
+      - description: tx channel free
+      - description: wakeup source
+    minItems: 2
+    maxItems: 3
+
+  interrupt-names:
+    items:
+      - const: rx
+      - const: tx
+      - const: wakeup
+    minItems: 2
+    maxItems: 3
+
+  wakeup-source: true
+
+  "#mbox-cells":
+    const: 1
+
+  st,proc-id:
+    description: Processor id using the mailbox (0 or 1)
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [ 0, 1 ]
+
+required:
+  - compatible
+  - reg
+  - st,proc-id
+  - clocks
+  - interrupt-names
+  - "#mbox-cells"
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/stm32mp1-clks.h>
+    ipcc: mailbox@4c001000 {
+      compatible = "st,stm32mp1-ipcc";
+      #mbox-cells = <1>;
+      reg = <0x4c001000 0x400>;
+      st,proc-id = <0>;
+      interrupts-extended = <&intc GIC_SPI 100 IRQ_TYPE_NONE>,
+      		      <&intc GIC_SPI 101 IRQ_TYPE_NONE>,
+      		      <&aiec 62 1>;
+      interrupt-names = "rx", "tx", "wakeup";
+      clocks = <&rcc_clk IPCC>;
+      wakeup-source;
+    };
+
+...