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

Vidya Sagar
2019-08-12T10:29:51Z

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
>