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

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Date:   Wed, 28 Aug 2019 15:34:02 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     Thierry Reding <thierry.reding@...il.com>
CC:     <lorenzo.pieralisi@....com>, <bhelgaas@...gle.com>,
        <robh+dt@...nel.org>, <jonathanh@...dia.com>, <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 0/6] PCI: tegra: Enable PCIe C5 controller of Tegra194 in
 p2972-0000 platform

On 8/28/2019 2:40 PM, Thierry Reding wrote:
> On Mon, Aug 26, 2019 at 01:01:37PM +0530, 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
>>
>> Vidya Sagar (6):
>>    dt-bindings: PCI: tegra: Add sideband pins configuration entries
>>    arm64: tegra: Add configuration for PCIe C5 sideband signals
>>    PCI: tegra: Add support to configure sideband pins
>>    dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries
>>    arm64: tegra: Add PCIe slot supply information in p2972-0000 platform
>>    PCI: tegra: Add support to enable slot regulators
> 
> Hi Vidya,
> 
> when you resend with review comments addressed, can you please reorder
> the patches slightly? I think it's more natural to order them like this:
> 
>      dt-bindings: PCI: tegra: Add sideband pins configuration entries
>      PCI: tegra: Add support to configure sideband pins
>      dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries
>      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
> 
> Or perhaps even like this:
> 
>      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
> 
> That makes it more obvious that patches 1-2 need an Acked-by from Rob
> and patches 1-4 need to go through Lorenzo's tree and that I'll pick up
> patches 5-6.Sure.
I'll do that.
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Thanks,
Vidya Sagar

> 
> Thierry
>