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Date: Mon, 18 Nov 2019 10:17:26 +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>
Subject: Re: [PATCH] dt-bindings: mailbox: convert stm32-ipcc to json-schema
On 11/15/19 3:59 PM, Arnaud Pouliquen wrote:
> 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..6843d51d96da
> --- /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: STM32 GPIO and Pin Mux/Config controller
oops stupid copy/past, V2 coming soon
> +
> +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>;
> - };
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