linux-kernel - Re: [PATCH] ARM: dts: gta04: fix excess dma channel usage

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Message-ID: <20230116173922.585904bf@aktux>
Date:   Mon, 16 Jan 2023 17:39:22 +0100
From:   Andreas Kemnade <andreas@...nade.info>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Adam Ford <aford173@...il.com>, bcousson@...libre.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "H. Nikolaus Schaller" <hns@...delico.com>
Subject: Re: [PATCH] ARM: dts: gta04: fix excess dma channel usage

On Mon, 16 Jan 2023 16:51:57 +0200
Tony Lindgren <tony@...mide.com> wrote:

> Hi,
> 
> * Adam Ford <aford173@...il.com> [230116 14:16]:
> > Would it make sense to make this default in the omap3.dtsi file and
> > enable them in the individual boards that need it?  
> 
> In general disabling the unused devices by default for omaps will break
> the power management. The disabled devices are completely ignored by the
> kernel, and the devices are left to whatever the bootloader state might
> be.
> 
hmm, shouldn't ti-sysc keep things disabled in most cases? It is still a bit
known because there is no status = "disabled" in the target-module@xxx node.

Regards,
Andreas