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Subject: Re: [PATCH 0/6] PCI: tegra: Enable PCIe C5 controller of Tegra194 in
 p2972-0000 platform
To:     Thierry Reding <thierry.reding@gmail.com>
CC:     <lorenzo.pieralisi@arm.com>, <bhelgaas@google.com>,
        <robh+dt@kernel.org>, <jonathanh@nvidia.com>, <kishon@ti.com>,
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References: <20190826073143.4582-1-vidyas@nvidia.com>
 <20190828091028.GB2917@ulmo>
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From:   Vidya Sagar <vidyas@nvidia.com>
Message-ID: <57b55bde-0f59-27ef-8bd3-13408d6d4493@nvidia.com>
Date:   Wed, 28 Aug 2019 15:34:02 +0530
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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
>