linux-kernel - Re: [PATCH 6/6] arm64: dts: ti: k3-am62p: Add partial-io wakeup sources

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Date: Mon, 27 May 2024 14:18:34 +0530
From: Dhruva Gole <d-gole@...com>
To: Nishanth Menon <nm@...com>
CC: Markus Schneider-Pargmann <msp@...libre.com>,
        Tero Kristo
	<kristo@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Vibhore Vardhan <vibhore@...com>, Kevin Hilman <khilman@...libre.com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] arm64: dts: ti: k3-am62p: Add partial-io wakeup
 sources

Hi Nishanth,

On May 24, 2024 at 00:54:58 -0500, Nishanth Menon wrote:
> On 10:02-20240523, Markus Schneider-Pargmann wrote:
> > From: Vibhore Vardhan <vibhore@...com>
> > 
> > In Partial-IO mode there are a number of possible wakeup sources. Add
> > the list of phandles to these wakeup sources. Based on the patch for
> > AM62a.
> > 
> > Signed-off-by: Vibhore Vardhan <vibhore@...com>
> > Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
> > ---
> >  arch/arm64/boot/dts/ti/k3-am62p.dtsi | 4 ++++
> >  1 file changed, 4 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/ti/k3-am62p.dtsi b/arch/arm64/boot/dts/ti/k3-am62p.dtsi
> > index 94babc412575..4d43cc972056 100644
> > --- a/arch/arm64/boot/dts/ti/k3-am62p.dtsi
> > +++ b/arch/arm64/boot/dts/ti/k3-am62p.dtsi
> > @@ -123,3 +123,7 @@ cbass_wakeup: bus@...000 {
> >  #include "k3-am62p-main.dtsi"
> >  #include "k3-am62p-mcu.dtsi"
> >  #include "k3-am62p-wakeup.dtsi"
> > +
> > +&dmsc {
> > +	ti,partial-io-wakeup-sources = <&mcu_mcan0>, <&mcu_mcan1>, <&mcu_uart0>, <&wkup_uart0>;
> > +};
> 
> NOTE: https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html#supported-low-power-modes
> table of SoCs supported do not provide J722s or AM62p in
> the list. I suspect it is an oversight, but seems to be a mismatch atm.

Yes, you are right. We will fix this in the documentation soon.
AM62P will be added to that list. J722s does not have lpm support.

-- 
Best regards,
Dhruva Gole <d-gole@...com>