linux-kernel - Re: [PATCH V3 0/6] PCI: tegra: Enable PCIe C5 controller of Tegra194 in p2972-0000 platform

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Date:   Thu, 5 Sep 2019 13:44:46 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <lorenzo.pieralisi@....com>, <bhelgaas@...gle.com>,
        <robh+dt@...nel.org>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <andrew.murray@....com>
CC:     <kishon@...com>, <gustavo.pimentel@...opsys.com>,
        <digetx@...il.com>, <mperttunen@...dia.com>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <kthota@...dia.com>,
        <mmaddireddy@...dia.com>, <sagar.tv@...il.com>
Subject: Re: [PATCH V3 0/6] PCI: tegra: Enable PCIe C5 controller of Tegra194
 in p2972-0000 platform

Hi Lorenzo / Bjorn,
Can you please review this series?
I have Reviewed-by and Acked-by from Rob, Thierry and Andrew already.

Thanks,
Vidya Sagar

On 8/28/2019 10:58 PM, Vidya Sagar wrote:
> This patch series enables Tegra194's C5 controller which owns x16 slot in
> p2972-0000 platform. C5 controller's PERST# and CLKREQ# are not configured as
> output and bi-directional signals by default and hence they need to be
> configured explicitly. Also, x16 slot's 3.3V and 12V supplies are controlled
> through GPIOs and hence they need to be enabled through regulator framework.
> This patch series adds required infrastructural support to address both the
> aforementioned requirements.
> Testing done on p2972-0000 platform
> - Able to enumerate devices connected to x16 slot (owned by C5 controller)
> - Enumerated device's functionality verified
> - Suspend-Resume sequence is verified with device connected to x16 slot
> 
> V3:
> * Addressed some more review comments from Andrew Murray and Thierry Reding
> 
> V2:
> * Changed the order of patches in the series for easy merging
> * Addressed review comments from Thierry Reding and Andrew Murray
> 
> Vidya Sagar (6):
>    dt-bindings: PCI: tegra: Add sideband pins configuration entries
>    dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries
>    PCI: tegra: Add support to configure sideband pins
>    PCI: tegra: Add support to enable slot regulators
>    arm64: tegra: Add configuration for PCIe C5 sideband signals
>    arm64: tegra: Add PCIe slot supply information in p2972-0000 platform
> 
>   .../bindings/pci/nvidia,tegra194-pcie.txt     | 16 ++++
>   .../arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 24 +++++
>   .../boot/dts/nvidia/tegra194-p2972-0000.dts   |  4 +-
>   arch/arm64/boot/dts/nvidia/tegra194.dtsi      | 38 +++++++-
>   drivers/pci/controller/dwc/pcie-tegra194.c    | 94 ++++++++++++++++++-
>   5 files changed, 172 insertions(+), 4 deletions(-)
>