linux-kernel - Re: [PATCH 1/6] PCI: rcar-gen2: Add support for clocks

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Date:   Wed, 13 Apr 2022 16:49:54 +0200
From:   Herve Codina <herve.codina@...tlin.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Marek Vasut <marek.vasut+renesas@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Krzysztof Wilczyński 
        <kw@...ux.com>, linux-pci@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Clement Leger <clement.leger@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: Re: [PATCH 1/6] PCI: rcar-gen2: Add support for clocks

Hi Rob,

On Tue, 12 Apr 2022 10:50:10 -0500
Rob Herring <robh@...nel.org> wrote:

> On Tue, Apr 12, 2022 at 11:40:24AM +0200, Herve Codina wrote:
> > The PCI rcar-gen2 does not call any clk_prepare_enable().
> > This lead to an access failure when the driver tries to access
> > the IP (at least on a RZ/N1D platform).
> > 
> > Prepare and enable clocks using the bulk version of
> > clk_prepare_enable() in order to prepare and enable all clocks
> > attached to this device.  
> 
> The binding says there is only a single clock, so it needs an update if 
> there are multiple clocks. (And ideally converted to DT schema format.)

Indeed, I will convert to DT schema format and update the clocks property
description.

Regards,
Hervé