From: Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Cc: Thierry Reding
<thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>,
Liam Girdwood <lrg-l0cyMroinI0@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>,
Grant Likely
<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>,
Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
Jesse Barnes <jbarnes-Y1mF5jBUw70BENJcbMCuUQ@public.gmane.org>,
Colin Cross <ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH 11/11] ARM: tegra: pcie: Add device tree support
Date: Mon, 12 Mar 2012 12:06:11 +0000 [thread overview]
Message-ID: <20120312120610.GA14020@sirena.org.uk> (raw)
In-Reply-To: <4F59253D.7070100-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
On Thu, Mar 08, 2012 at 02:31:41PM -0700, Stephen Warren wrote:
> On 03/08/2012 07:51 AM, Thierry Reding wrote:
> > +- vdd-supply: power supply for controller (1.05V)
> Should those *-supply properties really be optional? I got the
> impression talking to Mark in a different thread that all regulators
> should exist, although their implementation may be via a fixed
> regulator, with no GPIO, as determined by the board design.
Depends on the electronics, if the device can function without a supply
then it is OK for it to be optional. This is moderately unusual but not
unknown. It's obviously also OK to omit the supply if the system
doesn't use software regulators at all, though a kernel with regulator
support enabled would need to use dummy regulators to stub things out.
next prev parent reply other threads:[~2012-03-12 12:06 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-08 14:51 [PATCH 00/11] ARM: tegra: Add PCIe device tree support Thierry Reding
2012-03-08 14:51 ` [PATCH 01/11] drivercore: Add driver probe deferral mechanism Thierry Reding
[not found] ` <1331218291-16119-2-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-19 23:12 ` Sylwester Nawrocki
[not found] ` <4F67BD78.8070202-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-03-20 14:21 ` Grant Likely
2012-03-08 14:51 ` [PATCH 05/11] tps6586x: Add device-tree support Thierry Reding
2012-03-08 15:06 ` Mark Brown
[not found] ` <20120308150607.GP3638-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2012-03-08 15:15 ` Thierry Reding
2012-03-08 15:17 ` Mark Brown
2012-03-08 15:45 ` Thierry Reding
[not found] ` <20120308151545.GA23934-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-03-09 5:15 ` Grant Likely
2012-03-09 7:53 ` Thierry Reding
[not found] ` <1331218291-16119-1-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-08 14:51 ` [PATCH 02/11] regulator: Support driver probe deferral Thierry Reding
2012-03-08 14:51 ` [PATCH 03/11] regulator: fixed: " Thierry Reding
2012-03-11 12:58 ` Mark Brown
2012-03-08 14:51 ` [PATCH 04/11] regulator: tps6586x: fix typo in debug message Thierry Reding
[not found] ` <1331218291-16119-5-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-08 19:08 ` Mark Brown
2012-03-08 14:51 ` [PATCH 06/11] PCI: Keep pci_fixup_irqs() around after init Thierry Reding
[not found] ` <1331218291-16119-7-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-08 17:27 ` Bjorn Helgaas
2012-03-08 18:37 ` Thierry Reding
2012-03-08 18:41 ` Bjorn Helgaas
2012-03-08 14:51 ` [PATCH 07/11] ARM: pci: Keep pci_common_init() " Thierry Reding
2012-03-08 14:51 ` [PATCH 08/11] ARM: tegra: Move tegra_pcie_xclk_clamp() to PMC Thierry Reding
[not found] ` <1331218291-16119-9-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-08 19:50 ` Stephen Warren
2012-03-08 14:51 ` [PATCH 09/11] ARM: tegra: Rewrite PCIe support as a driver Thierry Reding
[not found] ` <1331218291-16119-10-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-08 20:09 ` Stephen Warren
[not found] ` <4F5911E0.6060802-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-03-09 6:37 ` Thierry Reding
[not found] ` <20120309063739.GC25208-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-03-09 16:42 ` Stephen Warren
2012-03-08 14:51 ` [PATCH 10/11] ARM: tegra: pcie: Add MSI support Thierry Reding
[not found] ` <1331218291-16119-11-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-03-08 21:14 ` Stephen Warren
[not found] ` <4F59213F.6070107-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-03-09 6:50 ` Thierry Reding
[not found] ` <20120309065004.GD25208-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-03-09 16:45 ` Stephen Warren
2012-03-12 8:00 ` Thierry Reding
[not found] ` <20120312080023.GA13788-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-03-12 16:57 ` Stephen Warren
2012-03-08 14:51 ` [PATCH 11/11] ARM: tegra: pcie: Add device tree support Thierry Reding
2012-03-08 21:31 ` Stephen Warren
[not found] ` <4F59253D.7070100-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-03-09 6:31 ` Thierry Reding
[not found] ` <20120309063115.GA25208-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-03-09 16:47 ` Stephen Warren
2012-03-12 12:06 ` Mark Brown [this message]
2012-03-12 14:17 ` Thierry Reding
[not found] ` <20120312141705.GA16395-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-03-12 14:23 ` Mark Brown
2012-03-12 14:28 ` Thierry Reding
2012-03-12 14:32 ` Mark Brown
2012-03-08 15:22 ` [PATCH 00/11] ARM: tegra: Add PCIe " Rob Herring
2012-03-08 15:43 ` Thierry Reding
2012-03-18 17:31 ` Olof Johansson
2012-03-09 4:54 ` Grant Likely
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