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Message-ID: <20191118101420.23610-1-arnaud.pouliquen@st.com>
Date: Mon, 18 Nov 2019 11:14:20 +0100
From: Arnaud Pouliquen <arnaud.pouliquen@...com>
To: Rob Herring <robh@...nel.org>, Mark Rutland <mark.rutland@....com>,
Alexandre Torgue <alexandre.torgue@...com>,
Jassi Brar <jassisinghbrar@...il.com>
CC: <devicetree@...r.kernel.org>,
<linux-stm32@...md-mailman.stormreply.com>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
Fabien Dessenne <fabien.dessenne@...com>,
Arnaud Pouliquen <arnaud.pouliquen@...com>
Subject: [PATCH v2] dt-bindings: mailbox: convert stm32-ipcc to json-schema
Convert the STM32 IPCC bindings to DT schema format using
json-schema
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...com>
---
.../bindings/mailbox/st,stm32-ipcc.yaml | 91 +++++++++++++++++++
.../bindings/mailbox/stm32-ipcc.txt | 47 ----------
2 files changed, 91 insertions(+), 47 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mailbox/st,stm32-ipcc.yaml
delete mode 100644 Documentation/devicetree/bindings/mailbox/stm32-ipcc.txt
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..90157d4deac1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/st,stm32-ipcc.yaml
@@ -0,0 +1,91 @@
+# 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@...com>
+ - Arnaud Pouliquen <arnaud.pouliquen@...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:
+ enums: [ rx, tx, wakeup ]
+ minItems: 2
+ maxItems: 3
+
+ wakeup-source:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Enables wake up of host system on wakeup IRQ assertion.
+
+ "#mbox-cells":
+ const: 1
+
+ st,proc-id:
+ description: Processor id using the mailbox (0 or 1)
+ allOf:
+ - minimum: 0
+ - maximum: 1
+ - default: 0
+
+required:
+ - compatible
+ - reg
+ - st,proc-id
+ - clocks
+ - interrupt-names
+ - "#mbox-cells"
+
+oneOf:
+ - required:
+ - interrupts
+ - required:
+ - interrupts-extended
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/stm32mp1-clks.h>
+ ipcc: mailbox@...01000 {
+ 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;
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/mailbox/stm32-ipcc.txt b/Documentation/devicetree/bindings/mailbox/stm32-ipcc.txt
deleted file mode 100644
index 1d2b7fee7b85..000000000000
--- a/Documentation/devicetree/bindings/mailbox/stm32-ipcc.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-* STMicroelectronics STM32 IPCC (Inter-Processor Communication Controller)
-
-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.
-
-Required properties:
-- compatible: Must be "st,stm32mp1-ipcc"
-- reg: Register address range (base address and length)
-- st,proc-id: Processor id using the mailbox (0 or 1)
-- clocks: Input clock
-- interrupt-names: List of names for the interrupts described by the interrupt
- property. Must contain the following entries:
- - "rx"
- - "tx"
- - "wakeup"
-- interrupts: Interrupt specifiers for "rx channel occupied", "tx channel
- free" and "system wakeup".
-- #mbox-cells: Number of cells required for the mailbox specifier. Must be 1.
- The data contained in the mbox specifier of the "mboxes"
- property in the client node is the mailbox channel index.
-
-Optional properties:
-- wakeup-source: Flag to indicate whether this device can wake up the system
-
-
-
-Example:
- ipcc: mailbox@...01000 {
- 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;
- }
-
-Client:
- mbox_test {
- ...
- mboxes = <&ipcc 0>, <&ipcc 1>;
- };
--
2.17.1
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