From: swarren@wwwdotorg•org (Stephen Warren)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC 1/5] PCI: tegra: Overhaul regulator usage
Date: Tue, 08 Apr 2014 13:15:47 -0600 [thread overview]
Message-ID: <53444AE3.6030603@wwwdotorg.org> (raw)
In-Reply-To: <1396622969-17837-2-git-send-email-treding@nvidia.com>
On 04/04/2014 08:49 AM, Thierry Reding wrote:
> The current usage of regulators for the Tegra PCIe block is wrong. It
> doesn't accurately reflect the actual supply inputs of the IP block and
> therefore isn't as flexible as it should be. Rectify this by describing
> all possible supply inputs in the device tree binding documentation and
> deprecate the old supply properties.
> diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt b/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
> +Power supplies for Tegra30:
...
> +- Optional:
> + - If port 0 is enabled:
> + - avdd-pexa-supply: Power supply for analog PCIe logic. Must supply 1.05 V.
> + - vdd-pexa-supply: Power supply for digital PCIe I/O. Must supply 1.05 V.
> + - If at least one of ports 1 and 2 is enabled:
> + - avdd-pexb-supply: Power supply for analog PCIe logic. Must supply 1.05 V.
> + - vdd-pexb-supply: Power supply for digital PCIe I/O. Must supply 1.05 V.
Did you get confirmation from HW/... that the mapping from pexa/b to
PCIe ports you document above is correct? IIRC the two supplies might be
related to lanes rather than ports?
next prev parent reply other threads:[~2014-04-08 19:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-04 14:49 [RFC 0/5] PCI: tegra: Overhaul regulator usage Thierry Reding
2014-04-04 14:49 ` [RFC 1/5] " Thierry Reding
2014-04-08 19:15 ` Stephen Warren [this message]
2014-04-08 19:52 ` Thierry Reding
2014-04-04 14:49 ` [RFC 2/5] ARM: tegra: Add new PCIe regulator properties Thierry Reding
2014-04-08 19:17 ` Stephen Warren
2014-04-08 19:54 ` Thierry Reding
2014-04-04 14:49 ` [RFC 3/5] PCI: tegra: Implement accurate power supply scheme Thierry Reding
2014-04-08 19:20 ` Stephen Warren
2014-04-08 19:55 ` Thierry Reding
2014-04-04 14:49 ` [RFC 4/5] PCI: tegra: Remove deprecated power supply properties Thierry Reding
2014-04-04 14:49 ` [RFC 5/5] ARM: tegra: Remove legacy PCIe " Thierry Reding
2014-04-08 19:21 ` [RFC 0/5] PCI: tegra: Overhaul regulator usage Stephen Warren
2014-04-25 16:57 ` Bjorn Helgaas
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