linux-kernel - Re: [PATCH v1 1/2] dt-bindings: rtc: Add MediaTek MT6685 PM/Clock IC Real Time Clock

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Message-ID: <20251024-unleash-slouchy-ef6903088ffe@spud>
Date: Fri, 24 Oct 2025 17:22:17 +0100
From: Conor Dooley <conor@...nel.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: alexandre.belloni@...tlin.com, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, matthias.bgg@...il.com,
	linux-rtc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH v1 1/2] dt-bindings: rtc: Add MediaTek MT6685 PM/Clock IC
 Real Time Clock

On Fri, Oct 24, 2025 at 10:33:17AM +0200, AngeloGioacchino Del Regno wrote:
> The MediaTek MT6685 PM / Clock IC contains various SPMI sub
> devices, of which two are Real Time Clock IPs, one usually
> reserved for the secure world and one for the unsecured one,
> reachable at different SPMI addresses.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
> 
> NOTE: This does not contain any example because the MT6685 RTC
>       will be added to the mfd binding for MediaTek SPMI PMICs
>       and examples will be there.

Were it not for this mfd stuff, could easily go in trivial-rtc.
Acked-by: Conor Dooley <conor.dooley@...rochip.com>
pw-bot: not-applicable

> 
> ** For reviewing purposes, this is how the example will look like: **
> 
>   - |
>     #include <dt-bindings/interrupt-controller/irq.h>
>     #include <dt-bindings/spmi/spmi.h>
> 
>     spmi {
>       #address-cells = <2>;
>       #size-cells = <0>;
> 
>       pmic@9 {
>         compatible = "mediatek,mt6363";
>         reg = <0x9 SPMI_USID>;
>         interrupts = <9 1 IRQ_TYPE_LEVEL_HIGH>;
>         interrupt-controller;
>         #address-cells = <1>;
>         #interrupt-cells = <3>;
>         #size-cells = <0>;
> 
>         clock-controller@514 {
>           compatible = "mediatek,mt6685-sck-top";
>           reg = <0x514>;
>           #clock-cells = <1>;
>         };
> 
>         rtc@580 {
>           compatible = "mediatek,mt6685-rtc";
>           reg = <0x580>;
>           interrupts = <9 0 IRQ_TYPE_LEVEL_HIGH>;
>         };
>       };
>     };
> 
>  .../bindings/rtc/mediatek,mt6685-rtc.yaml     | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/rtc/mediatek,mt6685-rtc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/rtc/mediatek,mt6685-rtc.yaml b/Documentation/devicetree/bindings/rtc/mediatek,mt6685-rtc.yaml
> new file mode 100644
> index 000000000000..1aec163b251a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/mediatek,mt6685-rtc.yaml
> @@ -0,0 +1,33 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/rtc/mediatek,mt6685-rtc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek MT6685 PM/Clock IC Real Time Clock
> +
> +allOf:
> +  - $ref: rtc.yaml#
> +
> +maintainers:
> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt6685-rtc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +unevaluatedProperties: false
> -- 
> 2.51.1
> 

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