Linux PCI subsystem development
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: Oliver Neukum <oneukum@suse.com>, linux-kernel@vger.kernel.org
Cc: linux-usb@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	bcm-kernel-feedback-list@broadcom.com, f.fainelli@gmail.com,
	gregkh@linuxfoundation.org, tim.gover@raspberrypi.org,
	linux-pci@vger.kernel.org, wahrenst@gmx.net,
	Andrew Murray <amurray@thegoodpenguin.co.uk>
Subject: Re: [PATCH v3 0/4] Raspberry Pi 4 VL805 firmware load support
Date: Tue, 03 Mar 2020 12:08:25 +0100	[thread overview]
Message-ID: <312c3305eef7534d534729d598372dbf5f3985cf.camel@suse.de> (raw)
In-Reply-To: <1583225019.12738.6.camel@suse.com>

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Hi Oliver,

On Tue, 2020-03-03 at 09:43 +0100, Oliver Neukum wrote:
> Am Montag, den 02.03.2020, 16:55 +0100 schrieb Nicolas Saenz Julienne:
> > On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be
> > loaded directly from an EEPROM or, if not present, by the SoC's
> > VideCore. This series adds support for the later.
> 
> What happens if runtime PM strikes, in particular, how do
> you deal with D4cold?

The RPi4 PCIe driver doesn't support runtime PM for now. Neither upstream nor
downstream. So I'd say it's not a problem. The same goes for suspend/resume,
which IIRC the Raspberry Pi foundation doesn't support.

Regards,
Nicolas


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      reply	other threads:[~2020-03-03 11:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-02 15:55 [PATCH v3 0/4] Raspberry Pi 4 VL805 firmware load support Nicolas Saenz Julienne
2020-03-02 15:55 ` [PATCH v3 1/4] soc: bcm2835: Sync xHCI reset firmware property with downstream Nicolas Saenz Julienne
2020-03-02 15:55 ` [PATCH v3 2/4] firmware: raspberrypi: Introduce vl805 init routine Nicolas Saenz Julienne
2020-03-02 15:55 ` [PATCH v3 3/4] PCI: brcmstb: Wait for Raspberry Pi's firmware when present Nicolas Saenz Julienne
2020-03-02 15:55 ` [PATCH v3 4/4] USB: pci-quirks: Add Raspberry Pi 4 quirk Nicolas Saenz Julienne
2020-03-04  9:05   ` Greg KH
2020-03-04 11:25     ` Nicolas Saenz Julienne
2020-03-03  8:43 ` [PATCH v3 0/4] Raspberry Pi 4 VL805 firmware load support Oliver Neukum
2020-03-03 11:08   ` Nicolas Saenz Julienne [this message]

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