From: Kishon Vijay Abraham I <kishon@ti.com>
To: Vidya Sagar <vidyas@nvidia.com>, <lorenzo.pieralisi@arm.com>,
<andrew.murray@arm.com>, Tom Joseph <tjoseph@cadence.com>,
Milind Parab <mparab@cadence.com>
Cc: <jingoohan1@gmail.com>, <gustavo.pimentel@synopsys.com>,
<bhelgaas@google.com>, <thierry.reding@gmail.com>,
<Jisheng.Zhang@synaptics.com>, <jonathanh@nvidia.com>,
<linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<kthota@nvidia.com>, <mmaddireddy@nvidia.com>,
<sagar.tv@gmail.com>
Subject: Re: [PATCH V2 0/5] Add support to defer core initialization
Date: Wed, 5 Feb 2020 12:07:08 +0530 [thread overview]
Message-ID: <b4af8353-3a56-fa31-3391-056050c0440a@ti.com> (raw)
In-Reply-To: <ca911119-da45-4cbd-b173-2ac8397fd79a@ti.com>
+Tom, Milind
Hi,
On 23/01/20 3:25 PM, Kishon Vijay Abraham I wrote:
> Hi Vidya Sagar,
>
> On 23/01/20 2:54 pm, Vidya Sagar wrote:
>> Hi Kishon,
>> Apologies for pinging again. Could you please review this series?
>>
>> Thanks,
>> Vidya Sagar
>>
>> On 1/11/2020 5:18 PM, Vidya Sagar wrote:
>>> Hi Kishon,
>>> Could you please review this series?
>>>
>>> Also, this series depends on the following change of yours
>>> http://patchwork.ozlabs.org/patch/1109884/
>>> Whats the plan to get this merged?
>
> I've posted the endpoint improvements as a separate series
> http://lore.kernel.org/r/20191231100331.6316-1-kishon@ti.com
>
> I'd prefer this series gets tested by others. I'm also planning to test
> this series. Sorry for the delay. I'll test review and test this series
> early next week.
I tested this series with DRA7 configured in EP mode. So for the series
itself
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Tom, Can you test this series in Cadence platform?
Lorenzo, Andrew,
How do you want to go about merging this series? This series depends on
[1] which in turn is dependent on two other series. If required, I can
rebase [1] on mainline kernel and remove it's dependencies with the
other series. That way this series and [1] could be merged. And the
other series could be worked later. Kindly let me know.
Thanks
Kishon
[1] ->
https://lore.kernel.org/linux-pci/20191231100331.6316-1-kishon@ti.com/
>
> Thanks
> Kishon
>
>>>
>>> Thanks,
>>> Vidya Sagar
>>>
>>> On 1/3/20 3:37 PM, Vidya Sagar wrote:
>>>> EPC/DesignWare core endpoint subsystems assume that the core
>>>> registers are
>>>> available always for SW to initialize. But, that may not be the case
>>>> always.
>>>> For example, Tegra194 hardware has the core running on a clock that
>>>> is derived
>>>> from reference clock that is coming into the endpoint system from host.
>>>> Hence core is made available asynchronously based on when host system
>>>> is going
>>>> for enumeration of devices. To accommodate this kind of hardwares,
>>>> support is
>>>> required to defer the core initialization until the respective
>>>> platform driver
>>>> informs the EPC/DWC endpoint sub-systems that the core is indeed
>>>> available for
>>>> initiaization. This patch series is attempting to add precisely that.
>>>> This series is based on Kishon's patch that adds notification mechanism
>>>> support from EPC to EPF @ http://patchwork.ozlabs.org/patch/1109884/
>>>>
>>>> Vidya Sagar (5):
>>>> PCI: endpoint: Add core init notifying feature
>>>> PCI: dwc: Refactor core initialization code for EP mode
>>>> PCI: endpoint: Add notification for core init completion
>>>> PCI: dwc: Add API to notify core initialization completion
>>>> PCI: pci-epf-test: Add support to defer core initialization
>>>>
>>>> .../pci/controller/dwc/pcie-designware-ep.c | 79 +++++++-----
>>>> drivers/pci/controller/dwc/pcie-designware.h | 11 ++
>>>> drivers/pci/endpoint/functions/pci-epf-test.c | 118 ++++++++++++------
>>>> drivers/pci/endpoint/pci-epc-core.c | 19 ++-
>>>> include/linux/pci-epc.h | 2 +
>>>> include/linux/pci-epf.h | 5 +
>>>> 6 files changed, 164 insertions(+), 70 deletions(-)
>>>>
next prev parent reply other threads:[~2020-02-05 6:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-03 10:07 [PATCH V2 0/5] Add support to defer core initialization Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 1/5] PCI: endpoint: Add core init notifying feature Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 2/5] PCI: dwc: Refactor core initialization code for EP mode Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 3/5] PCI: endpoint: Add notification for core init completion Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 4/5] PCI: dwc: Add API to notify core initialization completion Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 5/5] PCI: pci-epf-test: Add support to defer core initialization Vidya Sagar
2020-01-11 11:48 ` [PATCH V2 0/5] " Vidya Sagar
2020-01-23 9:24 ` Vidya Sagar
2020-01-23 9:55 ` Kishon Vijay Abraham I
2020-02-03 9:37 ` Vidya Sagar
2020-02-05 6:37 ` Kishon Vijay Abraham I [this message]
2020-02-19 13:36 ` Vidya Sagar
2020-02-20 16:00 ` Lorenzo Pieralisi
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