linux-kernel - Re: [PATCH V15 00/13] PCI: tegra: Add Tegra194 PCIe support

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Date:   Mon, 12 Aug 2019 15:59:39 +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>, <mark.rutland@....com>,
        <jonathanh@...dia.com>, <kishon@...com>, <catalin.marinas@....com>,
        <will.deacon@....com>, <jingoohan1@...il.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 V15 00/13] PCI: tegra: Add Tegra194 PCIe support

On 8/12/2019 3:55 PM, Thierry Reding wrote:
> On Fri, Aug 09, 2019 at 10:15:56AM +0530, Vidya Sagar wrote:
>> Tegra194 has six PCIe controllers based on Synopsys DesignWare core.
>> There are two Universal PHY (UPHY) blocks with each supporting 12(HSIO:
>> Hisg Speed IO) and 8(NVHS: NVIDIA High Speed) lanes respectively.
>> Controllers:0~4 use UPHY lanes from HSIO brick whereas Controller:5 uses
>> UPHY lanes from NVHS brick. Lane mapping in HSIO UPHY brick to each PCIe
>> controller (0~4) is controlled in XBAR module by BPMP-FW. Since PCIe
>> core has PIPE interface, a glue module called PIPE-to-UPHY (P2U) is used
>> to connect each UPHY lane (applicable to both HSIO and NVHS UPHY bricks)
>> to PCIe controller
>> This patch series
>> - Adds support for P2U PHY driver
>> - Adds support for PCIe host controller
>> - Adds device tree nodes each PCIe controllers
>> - Enables nodes applicable to p2972-0000 platform
>> - Adds helper APIs in Designware core driver to get capability regs offset
>> - Adds defines for new feature registers of PCIe spec revision 4
>> - Makes changes in DesignWare core driver to get Tegra194 PCIe working
>>
>> Testing done on P2972-0000 platform
>> - Able to get PCIe link up with on-board Marvel eSATA controller
>> - Able to get PCIe link up with NVMe cards connected to M.2 Key-M slot
>> - Able to do data transfers with both SATA drives and NVMe cards
>> - Able to perform suspend-resume sequence
> 
> Do you happen to have a patch for P2972-0000 PCI support? I don't see it
> in this series.
It is already merged.
V10 link @ http://patchwork.ozlabs.org/patch/1114445/

- Vidya Sagar
> 
> Thierry
>