On Tue, May 19, 2020 at 10:37:13AM +0200, Kamel Bouhara wrote:
> From: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
>
> Convert Atmel Timer Counter Blocks bindings to DT schema format using
> json-schema.
>
> Also move it out of mfd as it is not and has never been related to mfd.
>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
This should have your Sob too.
> ---
> .../devicetree/bindings/mfd/atmel-tcb.txt | 56 --------
> .../soc/microchip/atmel,at91rm9200-tcb.yaml | 126 ++++++++++++++++++
> 2 files changed, 126 insertions(+), 56 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-tcb.txt
> create mode 100644 Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml
>
> 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@fff7c000 {
> - 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@fffdc000 {
> - 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/soc/microchip/atmel,at91rm9200-tcb.yaml b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml
> new file mode 100644
> index 000000000000..4b683151265e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml
> @@ -0,0 +1,126 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/soc/microchip/atmel,at91rm9200-tcb.yaml#";
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#";
> +
> +title: Atmel Timer Counter Block
> +
> +maintainers:
> + - Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
> +
> +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.
This can express the 2nd sentence:
allOf:
- contains:
const: t0_clk
- contains:
const: slow_clk
> + 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
> +
> +patternProperties:
> + "^timer@[0-2]$":
> + description: The timer block channels that are used as timers.
> + type: object
> + properties:
> + compatible:
> + const: atmel,tcb-timer
> + reg:
> + description:
> + List of channels to use for this particular timer.
> + minItems: 1
> + maxItems: 3
> +
> + required:
> + - compatible
> + - reg
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - '#address-cells'
> + - '#size-cells'
> +
> +examples:
> + - |
> + /* One interrupt per TC block: */
> + tcb0: timer@fff7c000 {
> + 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@fffdc000 {
> + 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";
> +
> + timer@0 {
> + compatible = "atmel,tcb-timer";
> + reg = <0>;
> + };
> +
> + timer@1 {
> + compatible = "atmel,tcb-timer";
> + reg = <1>;
> + };
> + };
> --
> 2.25.0
>
