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From: Maxime Ripard <maxime@cerno.tech>
To: Andre Przywara <andre.przywara@arm.com>
Cc: Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Rob Herring <robh@kernel.org>, Icenowy Zheng <icenowy@aosc.io>,
	Samuel Holland <samuel@sholland.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@googlegroups.com, linux-sunxi@lists.linux.dev,
	linux-kernel@vger.kernel.org, Ondrej Jirman <megous@megous.com>,
	devicetree@vger.kernel.org,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	linux-rtc@vger.kernel.org
Subject: Re: [PATCH v8 02/11] dt-bindings: rtc: sun6i: Add H616 compatible string
Date: Mon, 26 Jul 2021 16:41:37 +0200	[thread overview]
Message-ID: <20210726144137.6dauuxdssu7yszox@gilmour> (raw)
In-Reply-To: <20210723153838.6785-3-andre.przywara@arm.com>

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Hi,

On Fri, Jul 23, 2021 at 04:38:29PM +0100, Andre Przywara wrote:
> Add the obvious compatible name to the existing RTC binding.
> The actual RTC part of the device uses a different day/month/year
> storage scheme, so it's not compatible with the previous devices.
> Also the clock part is quite different, as there is no external 32K LOSC
> oscillator input.
> 
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
>
> ---
>  .../bindings/rtc/allwinner,sun6i-a31-rtc.yaml      | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml b/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml
> index beeb90e55727..d8a6500e5840 100644
> --- a/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml
> +++ b/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml
> @@ -26,6 +26,7 @@ properties:
>            - const: allwinner,sun50i-a64-rtc
>            - const: allwinner,sun8i-h3-rtc
>        - const: allwinner,sun50i-h6-rtc
> +      - const: allwinner,sun50i-h616-rtc
>  
>    reg:
>      maxItems: 1
> @@ -104,6 +105,19 @@ allOf:
>            minItems: 3
>            maxItems: 3
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: allwinner,sun50i-h616-rtc
> +
> +    then:
> +      properties:
> +        clock-output-names:
> +          minItems: 3
> +          maxItems: 3

You don't need both of them when they are equal

> +        clocks: false
> +

It's not entirely clear to me what those clocks are about though. If we
look at the clock output in the user manual, it looks like there's only
two clocks that are actually being output: the 32k "fanout" clock and
the losc. What are the 3 you're talking about?

Also, it looks like the 32k fanout clock needs at least the hosc or
pll-periph in input, so we probably don't want to ask for no parent
clock?

Maxime

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  parent reply	other threads:[~2021-07-26 14:41 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23 15:38 [PATCH v8 00/11] arm64: sunxi: Initial Allwinner H616 SoC support Andre Przywara
2021-07-23 15:38 ` [PATCH v8 01/11] dt-bindings: mfd: axp20x: Add AXP305 compatible (plus optional IRQ) Andre Przywara
2021-08-16 12:39   ` Lee Jones
2021-07-23 15:38 ` [PATCH v8 02/11] dt-bindings: rtc: sun6i: Add H616 compatible string Andre Przywara
2021-07-23 22:34   ` Rob Herring
2021-07-26 14:41   ` Maxime Ripard [this message]
2021-08-02  0:39     ` Andre Przywara
2021-08-17  7:38       ` Maxime Ripard
2021-08-17  8:13         ` Alexandre Belloni
2021-08-19  7:56           ` Maxime Ripard
2021-08-18  9:04         ` Andre Przywara
2021-08-20  3:57           ` Samuel Holland
2021-09-01  7:21           ` Maxime Ripard
2021-07-23 15:38 ` [PATCH v8 03/11] rtc: sun6i: Fix time overflow handling Andre Przywara
2021-07-25  5:44   ` Jernej Škrabec
2021-07-23 15:38 ` [PATCH v8 04/11] rtc: sun6i: Add support for linear day storage Andre Przywara
2021-07-25  5:51   ` Jernej Škrabec
2021-07-23 15:38 ` [PATCH v8 05/11] rtc: sun6i: Add support for broken-down alarm registers Andre Przywara
2021-07-25  6:11   ` Jernej Škrabec
2021-08-02  0:39     ` Andre Przywara
2021-07-23 15:38 ` [PATCH v8 06/11] rtc: sun6i: Add support for RTCs without external LOSCs Andre Przywara
2021-07-25  6:18   ` Jernej Škrabec
2021-07-23 15:38 ` [PATCH v8 07/11] rtc: sun6i: Add Allwinner H616 support Andre Przywara
2021-07-25  6:19   ` Jernej Škrabec
2021-07-23 15:38 ` [PATCH v8 08/11] arm64: dts: allwinner: Add Allwinner H616 .dtsi file Andre Przywara
2021-07-23 15:38 ` [PATCH v8 09/11] dt-bindings: arm: sunxi: Add two H616 board compatible strings Andre Przywara
2021-07-23 15:38 ` [PATCH v8 10/11] arm64: dts: allwinner: h616: Add OrangePi Zero 2 board support Andre Przywara
2021-07-23 15:38 ` [PATCH v8 11/11] arm64: dts: allwinner: h616: Add X96 Mate TV box support Andre Przywara
2021-07-25 16:41 ` [PATCH v8 00/11] arm64: sunxi: Initial Allwinner H616 SoC support Icenowy Zheng
2021-07-26 14:52 ` Maxime Ripard
2021-08-02  0:38   ` Andre Przywara
2021-08-17  7:30     ` Maxime Ripard

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