linux-kernel - Re: [PATCH 0/2] pinctrl-single: introduce am654-padconf compatible

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Date:   Wed, 9 Aug 2023 06:49:13 -0500
From:   Nishanth Menon <nm@...com>
To:     Dhruva Gole <d-gole@...com>
CC:     Tony Lindgren <tony@...mide.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-omap@...r.kernel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Haojian Zhuang <haojian.zhuang@...aro.org>
Subject: Re: [PATCH 0/2] pinctrl-single: introduce am654-padconf compatible

On 15:52-20230808, Dhruva Gole wrote:
> The K3 family of SOCs use certain bits of the padconfig registers like
> WKUP_EVT and WKUP_EN to enable daisychain wakeups.
> 
> For example, these bits are described in the AM654 TRM [0] under
> "Table 5-517. Description Of The Pad Configuration Register Bits"
> 
> This series adds the DT binding changes for adding the compatible and
> also the driver changes which make use of this compatible.
> 
> NOTE: Some K3 SoCs may have these bits marked as reserved which means
> that they don't support IO daisychain. Such SOCs are not expected to use
> this compatible.
> 
> The general expected usage is when the device is in a suspended state like Deep
> Sleep or Suspend to RAM, and any IO activity on configured pads can
> trigger a wakeup.
> 
> Link to complete series:
> https://lore.kernel.org/all/20230808102207.130177-1-d-gole@ti.com
> 
> Base commit:
> 71cd4fc492ec (tag: next-20230808, linux-next/master) Add linux-next specific files for 20230808
> 
> depends on:
> https://lore.kernel.org/r/20230721082654.27036-1-tony@atomide.com
> 
> which has been picked up by Linus Walleij in his tree here:
> https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git/commit/?h=devel&id=677a62482bd6e584f83d0342e78735e3cd449ba4
> 
> However, it hasn't reflected in -next yet so specifying the depends on
> above.

next-20230809 has it today - so just a day or two of sync.. no biggie.

> 
> [0] https://www.ti.com/lit/pdf/spruid7
> 
> Cc: Nishanth Menon <nm@...com>
> Cc: Vignesh Raghavendra <vigneshr@...com>
> Cc: Tony Lindgren <tony@...mide.com>
> Cc: Conor Dooley <conor.dooley@...rochip.com>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Haojian Zhuang <haojian.zhuang@...aro.org>

For the series:

Reviewed-by: Nishanth Menon <nm@...com>

Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D