From: Philipp Zabel <p.zabel@pengutronix.de> To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>, f.fainelli@gmail.com, gregkh@linuxfoundation.org, wahrenst@gmx.net, 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, tim.gover@raspberrypi.org, linux-pci@vger.kernel.org, helgaas@kernel.org, andy.shevchenko@gmail.com, mathias.nyman@linux.intel.com, lorenzo.pieralisi@arm.com Subject: Re: [PATCH v3 2/9] reset: Add Raspberry Pi 4 firmware reset controller Date: Fri, 26 Jun 2020 12:43:07 +0200 [thread overview] Message-ID: <6ddaf69d4f5ad188864f62dcdbfbbe32acef9820.camel@pengutronix.de> (raw) In-Reply-To: <b324122e8bd93302215a77d0dcf6d8b2897d3597.camel@suse.de> On Wed, 2020-06-17 at 12:44 +0200, Nicolas Saenz Julienne wrote: > On Wed, 2020-06-17 at 12:02 +0200, Philipp Zabel wrote: > > Hi Nicolas, > > > > On Fri, 2020-06-12 at 19:13 +0200, Nicolas Saenz Julienne wrote: > > > Raspberry Pi 4's co-processor controls some of the board's HW > > > initialization process, but it's up to Linux to trigger it when > > > relevant. Introduce a reset controller capable of interfacing with > > > RPi4's co-processor that models these firmware initialization routines as > > > reset lines. > > > > > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> > > > Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> > > > > Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> > > Thanks! > > > If there is a good reason for the single DT specified reset id, I can > > pick up patches 1 and 2. > > The idea here is to make sure we're reasonably covered against further changes > in firmware. If we define constraints too narrow it can be a pain to support > new features without breaking backwards compatibility in dt. Ok. > > If you change the dts patch 4 to use a number instead of the reset id > > define for now, there wouldn't even be a dependency between these reset > > and dts patches. > > I was under the impression that having an explicit definition was nice to have. > What's troubling about creating the dependency? Just that the last patch has to wait for the reset patches to be merged before it can be applied. regards Philipp
WARNING: multiple messages have this Message-ID (diff)
From: Philipp Zabel <p.zabel@pengutronix.de> To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>, f.fainelli@gmail.com, gregkh@linuxfoundation.org, wahrenst@gmx.net, linux-kernel@vger.kernel.org Cc: tim.gover@raspberrypi.org, mathias.nyman@linux.intel.com, linux-pci@vger.kernel.org, linux-usb@vger.kernel.org, andy.shevchenko@gmail.com, lorenzo.pieralisi@arm.com, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, helgaas@kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v3 2/9] reset: Add Raspberry Pi 4 firmware reset controller Date: Fri, 26 Jun 2020 12:43:07 +0200 [thread overview] Message-ID: <6ddaf69d4f5ad188864f62dcdbfbbe32acef9820.camel@pengutronix.de> (raw) In-Reply-To: <b324122e8bd93302215a77d0dcf6d8b2897d3597.camel@suse.de> On Wed, 2020-06-17 at 12:44 +0200, Nicolas Saenz Julienne wrote: > On Wed, 2020-06-17 at 12:02 +0200, Philipp Zabel wrote: > > Hi Nicolas, > > > > On Fri, 2020-06-12 at 19:13 +0200, Nicolas Saenz Julienne wrote: > > > Raspberry Pi 4's co-processor controls some of the board's HW > > > initialization process, but it's up to Linux to trigger it when > > > relevant. Introduce a reset controller capable of interfacing with > > > RPi4's co-processor that models these firmware initialization routines as > > > reset lines. > > > > > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> > > > Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> > > > > Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> > > Thanks! > > > If there is a good reason for the single DT specified reset id, I can > > pick up patches 1 and 2. > > The idea here is to make sure we're reasonably covered against further changes > in firmware. If we define constraints too narrow it can be a pain to support > new features without breaking backwards compatibility in dt. Ok. > > If you change the dts patch 4 to use a number instead of the reset id > > define for now, there wouldn't even be a dependency between these reset > > and dts patches. > > I was under the impression that having an explicit definition was nice to have. > What's troubling about creating the dependency? Just that the last patch has to wait for the reset patches to be merged before it can be applied. regards Philipp _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-06-26 10:43 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-12 17:13 [PATCH v3 0/9] Raspberry Pi 4 USB firmware initialization rework Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 1/9] dt-bindings: reset: Add a binding for the RPi Firmware reset controller Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-17 9:55 ` Philipp Zabel 2020-06-17 9:55 ` Philipp Zabel 2020-06-17 10:22 ` Nicolas Saenz Julienne 2020-06-17 10:22 ` Nicolas Saenz Julienne 2020-07-13 18:23 ` Rob Herring 2020-07-13 18:23 ` Rob Herring 2020-07-14 11:59 ` Nicolas Saenz Julienne 2020-07-14 11:59 ` Nicolas Saenz Julienne 2020-07-14 21:07 ` Rob Herring 2020-07-14 21:07 ` Rob Herring 2020-07-14 21:17 ` Florian Fainelli 2020-07-14 21:17 ` Florian Fainelli 2020-07-14 23:18 ` Rob Herring 2020-07-14 23:18 ` Rob Herring 2020-06-12 17:13 ` [PATCH v3 2/9] reset: Add Raspberry Pi 4 firmware " Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-17 10:02 ` Philipp Zabel 2020-06-17 10:02 ` Philipp Zabel 2020-06-17 10:44 ` Nicolas Saenz Julienne 2020-06-17 10:44 ` Nicolas Saenz Julienne 2020-06-26 10:43 ` Philipp Zabel [this message] 2020-06-26 10:43 ` Philipp Zabel 2020-06-29 15:19 ` Nicolas Saenz Julienne 2020-06-29 15:19 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 3/9] ARM: dts: bcm2711: Add firmware usb reset node Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 4/9] ARM: dts: bcm2711: Add reset controller to xHCI node Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-17 19:21 ` Nicolas Saenz Julienne 2020-06-17 19:21 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 5/9] usb: xhci-pci: Add support for reset controllers Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-12 17:24 ` Florian Fainelli 2020-06-12 17:24 ` Florian Fainelli 2020-06-15 7:29 ` Mathias Nyman 2020-06-15 7:29 ` Mathias Nyman 2020-06-17 10:02 ` Philipp Zabel 2020-06-17 10:02 ` Philipp Zabel 2020-06-12 17:13 ` [PATCH v3 6/9] Revert "USB: pci-quirks: Add Raspberry Pi 4 quirk" Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 7/9] usb: host: pci-quirks: Bypass xHCI quirks for Raspberry Pi 4 Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 8/9] Revert "firmware: raspberrypi: Introduce vl805 init routine" Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne 2020-06-12 17:13 ` [PATCH v3 9/9] Revert "PCI: brcmstb: Wait for Raspberry Pi's firmware when present" Nicolas Saenz Julienne 2020-06-12 17:13 ` Nicolas Saenz Julienne
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=6ddaf69d4f5ad188864f62dcdbfbbe32acef9820.camel@pengutronix.de \ --to=p.zabel@pengutronix.de \ --cc=andy.shevchenko@gmail.com \ --cc=bcm-kernel-feedback-list@broadcom.com \ --cc=f.fainelli@gmail.com \ --cc=gregkh@linuxfoundation.org \ --cc=helgaas@kernel.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-pci@vger.kernel.org \ --cc=linux-rpi-kernel@lists.infradead.org \ --cc=linux-usb@vger.kernel.org \ --cc=lorenzo.pieralisi@arm.com \ --cc=mathias.nyman@linux.intel.com \ --cc=nsaenzjulienne@suse.de \ --cc=tim.gover@raspberrypi.org \ --cc=wahrenst@gmx.net \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.