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Message-ID: <20191015223918.GA26590@bogus>
Date: Tue, 15 Oct 2019 17:39:18 -0500
From: Rob Herring <robh@...nel.org>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH 1/8] dt-bindings: mfd: atmel-tcb: convert bindings to
json-schema
On Thu, Oct 10, 2019 at 12:39:59AM +0200, Alexandre Belloni wrote:
> Convert Atmel Timer Counter Blocks bindings to DT schema format using
> json-schema.
>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
> ---
> Cc: Rob Herring <robh+dt@...nel.org>
>
> .../bindings/mfd/atmel,at91rm9200-tcb.yaml | 89 +++++++++++++++++++
> .../devicetree/bindings/mfd/atmel-tcb.txt | 56 ------------
> 2 files changed, 89 insertions(+), 56 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/mfd/atmel,at91rm9200-tcb.yaml
> delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-tcb.txt
>
> diff --git a/Documentation/devicetree/bindings/mfd/atmel,at91rm9200-tcb.yaml b/Documentation/devicetree/bindings/mfd/atmel,at91rm9200-tcb.yaml
> new file mode 100644
> index 000000000000..4d9247fc0593
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/atmel,at91rm9200-tcb.yaml
> @@ -0,0 +1,89 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/mfd/atmel,at91rm9200-tcb.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Atmel Timer Counter Block
> +
> +maintainers:
> + - Alexandre Belloni <alexandre.belloni@...tlin.com>
> +
> +description: |
> + The Atmel (now Microchip) SoCs have timers named Timer Counter Block. Each
> + timer has three channels with two counters each.
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - atmel,at91rm9200-tcb
> + - atmel,at91sam9x5-tcb
> + - const: simple-mfd
> + - const: syscon
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + description:
> + List of interrupts. One interrupt per TCB channel if available or one
> + interrupt for the TC block
> + minItems: 1
> + maxItems: 3
> +
> + clock-names:
> + description:
> + List of clock names. Always includes t0_clk and slow clk. Also includes
> + t1_clk and t2_clk if a clock per channel is available.
> + minItems: 2
> + maxItems: 4
> + items:
> + enum:
> + - t0_clk
> + - t1_clk
> + - t2_clk
> + - slow_clk
> +
> + clocks:
> + minItems: 2
> + maxItems: 4
> +
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
What happened to the child nodes?
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - '#address-cells'
> + - '#size-cells'
> +
> +examples:
> + - |
> + /* One interrupt per TC block: */
> + tcb0: timer@...7c000 {
> + compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0xfff7c000 0x100>;
> + interrupts = <18 4>;
> + clocks = <&tcb0_clk>, <&clk32k>;
> + clock-names = "t0_clk", "slow_clk";
> + };
> +
> + /* One interrupt per TC channel in a TC block: */
> + tcb1: timer@...dc000 {
> + compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0xfffdc000 0x100>;
> + interrupts = <26 4>, <27 4>, <28 4>;
> + clocks = <&tcb1_clk>, <&clk32k>;
> + clock-names = "t0_clk", "slow_clk";
> + };
> diff --git a/Documentation/devicetree/bindings/mfd/atmel-tcb.txt b/Documentation/devicetree/bindings/mfd/atmel-tcb.txt
> deleted file mode 100644
> index c4a83e364cb6..000000000000
> --- a/Documentation/devicetree/bindings/mfd/atmel-tcb.txt
> +++ /dev/null
> @@ -1,56 +0,0 @@
> -* Device tree bindings for Atmel Timer Counter Blocks
> -- compatible: Should be "atmel,<chip>-tcb", "simple-mfd", "syscon".
> - <chip> can be "at91rm9200" or "at91sam9x5"
> -- reg: Should contain registers location and length
> -- #address-cells: has to be 1
> -- #size-cells: has to be 0
> -- interrupts: Should contain all interrupts for the TC block
> - Note that you can specify several interrupt cells if the TC
> - block has one interrupt per channel.
> -- clock-names: tuple listing input clock names.
> - Required elements: "t0_clk", "slow_clk"
> - Optional elements: "t1_clk", "t2_clk"
> -- clocks: phandles to input clocks.
> -
> -The TCB can expose multiple subdevices:
> - * a timer
> - - compatible: Should be "atmel,tcb-timer"
> - - reg: Should contain the TCB channels to be used. If the
> - counter width is 16 bits (at91rm9200-tcb), two consecutive
> - channels are needed. Else, only one channel will be used.
> -
> -Examples:
> -
> -One interrupt per TC block:
> - tcb0: timer@...7c000 {
> - compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
> - #address-cells = <1>;
> - #size-cells = <0>;
> - reg = <0xfff7c000 0x100>;
> - interrupts = <18 4>;
> - clocks = <&tcb0_clk>, <&clk32k>;
> - clock-names = "t0_clk", "slow_clk";
> -
> - timer@0 {
> - compatible = "atmel,tcb-timer";
> - reg = <0>, <1>;
> - };
> -
> - timer@2 {
> - compatible = "atmel,tcb-timer";
> - reg = <2>;
> - };
> - };
> -
> -One interrupt per TC channel in a TC block:
> - tcb1: timer@...dc000 {
> - compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
> - #address-cells = <1>;
> - #size-cells = <0>;
> - reg = <0xfffdc000 0x100>;
> - interrupts = <26 4>, <27 4>, <28 4>;
> - clocks = <&tcb1_clk>, <&clk32k>;
> - clock-names = "t0_clk", "slow_clk";
> - };
> -
> -
> --
> 2.21.0
>
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