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Message-ID: <deb13eb1-7d6e-27a8-738d-70ba70358e71@linaro.org>
Date: Mon, 8 May 2023 18:26:09 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Claudiu Beznea <claudiu.beznea@...rochip.com>,
mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, nicolas.ferre@...rochip.com,
alexandre.belloni@...tlin.com
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/5] dt-bindings: clocks: atmel,at91rm9200-pmc: convert
to yaml
On 08/05/2023 12:47, Claudiu Beznea wrote:
> Convert Atmel PMC documentation to yaml.
Please mention the changes against original binding. At least
clock-names look different, maybe more.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
> ---
> .../devicetree/bindings/clock/at91-clock.txt | 28 ----
> .../bindings/clock/atmel,at91rm9200-pmc.yaml | 154 ++++++++++++++++++
> 2 files changed, 154 insertions(+), 28 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/clock/atmel,at91rm9200-pmc.yaml
>
> diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt
> index 13f45db3b66d..57394785d3b0 100644
> --- a/Documentation/devicetree/bindings/clock/at91-clock.txt
> +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt
> @@ -28,31 +28,3 @@ For example:
> #clock-cells = <0>;
> };
>
> -Power Management Controller (PMC):
> -
> -Required properties:
> -- compatible : shall be "atmel,<chip>-pmc", "syscon" or
> - "microchip,sam9x60-pmc"
> - <chip> can be: at91rm9200, at91sam9260, at91sam9261,
> - at91sam9263, at91sam9g45, at91sam9n12, at91sam9rl, at91sam9g15,
> - at91sam9g25, at91sam9g35, at91sam9x25, at91sam9x35, at91sam9x5,
> - sama5d2, sama5d3 or sama5d4.
> -- #clock-cells : from common clock binding; shall be set to 2. The first entry
> - is the type of the clock (core, system, peripheral or generated) and the
> - second entry its index as provided by the datasheet
> -- clocks : Must contain an entry for each entry in clock-names.
> -- clock-names: Must include the following entries: "slow_clk", "main_xtal"
> -
> -Optional properties:
> -- atmel,osc-bypass : boolean property. Set this when a clock signal is directly
> - provided on XIN.
> -
> -For example:
> - pmc: pmc@...18000 {
> - compatible = "atmel,sama5d4-pmc", "syscon";
> - reg = <0xf0018000 0x120>;
> - interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
> - #clock-cells = <2>;
> - clocks = <&clk32k>, <&main_xtal>;
> - clock-names = "slow_clk", "main_xtal";
> - };
> diff --git a/Documentation/devicetree/bindings/clock/atmel,at91rm9200-pmc.yaml b/Documentation/devicetree/bindings/clock/atmel,at91rm9200-pmc.yaml
> new file mode 100644
> index 000000000000..58b702520600
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/atmel,at91rm9200-pmc.yaml
> @@ -0,0 +1,154 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/atmel,at91rm9200-pmc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Atmel Power Management Controller (PMC)
> +
> +maintainers:
> + - Claudiu Beznea <claudiu.beznea@...rochip.com>
> +
> +description:
> + The power management controller optimizes power consumption by controlling all
> + system and user peripheral clocks. The PMC enables/disables the clock inputs
> + to many of the peripherals and to the processor.
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - const: atmel,at91sam9260-pmc
> + - const: syscon
No improvements here. Why this is part of this group not the one at the
end? I already talked about this.
> + - items:
> + - enum:
> + - atmel,at91sam9g15-pmc
> + - atmel,at91sam9g20-pmc
> + - atmel,at91sam9g25-pmc
> + - atmel,at91sam9g35-pmc
> + - atmel,at91sam9x25-pmc
> + - atmel,at91sam9x35-pmc
> + - enum:
> + - atmel,at91sam9260-pmc
> + - atmel,at91sam9x5-pmc
> + - const: syscon
> + - items:
> + - enum:
> + - atmel,at91rm9200-pmc
> + - atmel,at91sam9g45-pmc
> + - atmel,at91sam9n12-pmc
> + - atmel,at91sam9rl-pmc
> + - atmel,sama5d2-pmc
> + - atmel,sama5d3-pmc
> + - atmel,sama5d4-pmc
> + - microchip,sam9x60-pmc
> + - microchip,sama7g5-pmc
> + - const: syscon
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + "#clock-cells":
> + description: |
> + - 1st cell is the clock type, one of PMC_TYPE_CORE, PMC_TYPE_SYSTEM,
> + PMC_TYPE_PERIPHERAL, PMC_TYPE_GCK, PMC_TYPE_PROGRAMMABLE (as defined
> + in <dt-bindings/clock/at91.h>)
> + - 2nd cell is the clock identifier as defined in <dt-bindings/clock/at91.h
> + (for core clocks) or as defined in datasheet (for system, peripheral,
> + gck and programmable clocks).
> + const: 2
> +
> + clocks:
> + minItems: 2
> + maxItems: 3
> +
> + clock-names:
> + minItems: 2
> + maxItems: 3
> +
> + atmel,osc-bypass:
> + description: set when a clock signal is directly provided on XIN
> + type: boolean
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - "#clock-cells"
> + - clocks
> + - clock-names
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - microchip,sam9x60-pmc
> + - microchip,sama7g5-pmc
> + then:
> + properties:
> + clocks:
> + minItems: 3
> + maxItems: 3
> + clock-names:
> + items:
> + - const: td_slck
> + - const: md_slck
> + - const: main_xtal
> +
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - atmel,at91rm9200-pmc
> + - atmel,at91sam9260-pmc
> + - atmel,at91sam9g20-pmc
> + then:
> + properties:
> + clocks:
> + minItems: 2
> + maxItems: 2
> + clock-names:
> + items:
> + - const: slow_xtal
> + - const: main_xtal
> +
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - atmel,sama5d4-pmc
> + - atmel,sama5d3-pmc
> + - atmel,sama5d2-pmc
Keep similar order as in compatibles list, e.g. alphanumeric.
Best regards,
Krzysztof
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