From: Prasad Malisetty <pmaliset@codeaurora.org>
To: Stephen Boyd <swboyd@chromium.org>
Cc: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Rob Herring <robh+dt@kernel.org>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
mgautam@codeaurora.org, dianders@chromium.org, mka@chromium.org
Subject: Re: [PATCH 1/3] dt-bindings: pci: qcom: Document PCIe bindings for SC720
Date: Fri, 04 Jun 2021 16:56:57 +0530 [thread overview]
Message-ID: <cb2a6cd35df42314c5e5230bcac752be@codeaurora.org> (raw)
In-Reply-To: <CAE-0n53KTeF9NOrb+x7P1AG53FENRBGtCEcSxronBpJoww3jew@mail.gmail.com>
On 2021-05-08 01:29, Stephen Boyd wrote:
> Quoting Prasad Malisetty (2021-05-07 03:17:26)
>> Document the PCIe DT bindings for SC7280 SoC.The PCIe IP is similar
>> to the one used on SM8250. Add the compatible for SC7280.
>>
>> Signed-off-by: Prasad Malisetty <pmaliset@codeaurora.org>
>> ---
>> Documentation/devicetree/bindings/pci/qcom,pcie.txt | 17
>> +++++++++++++++++
>> 1 file changed, 17 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
>> b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
>> index 0da458a..e5245ed 100644
>> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
>> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
>> @@ -12,6 +12,7 @@
>> - "qcom,pcie-ipq4019" for ipq4019
>> - "qcom,pcie-ipq8074" for ipq8074
>> - "qcom,pcie-qcs404" for qcs404
>> + - "qcom,pcie-sc7280" for sc7280
>> - "qcom,pcie-sdm845" for sdm845
>> - "qcom,pcie-sm8250" for sm8250
>>
>> @@ -133,6 +134,22 @@
>> - "slave_bus" AXI Slave clock
>>
>> - clock-names:
>> + Usage: required for sc7280
>> + Value type: <stringlist>
>> + Definition: Should contain the following entries
>> + - "aux" Auxiliary clock
>> + - "cfg" Configuration clock
>> + - "bus_master" Master AXI clock
>> + - "bus_slave" Slave AXI clock
>> + - "slave_q2a" Slave Q2A clock
>> + - "tbu" PCIe TBU clock
>> + - "ddrss_sf_tbu" PCIe SF TBU clock
>> + - "pipe" PIPE clock
>> + - "pipe_src" PIPE MUX
>
> Is pipe_src necessary? Is it the parent of the pipe clk? If so, please
> remove it and do whatever is necessary on the pipe clk instead of the
> parent of the clk.
Here pipe_src is MUX. Newer targets require changing pipe-clk mux to
switch between pipe_clk and XO for GDSC enable.
After PHY init, need to configure MUX.
>
>> + - "pipe_ext" PIPE output clock
>
> Is pipe output different from pipe?
>
Yes, pipe_ext clock will generate after PHY init.
>> + - "ref" REFERENCE clock
>> +
>>
next prev parent reply other threads:[~2021-06-04 11:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 10:17 [PATCH 0/3] Add DT bindings and DT nodes for PCIe and PHY in SC7280 Prasad Malisetty
2021-05-07 10:17 ` [PATCH 1/3] dt-bindings: pci: qcom: Document PCIe bindings for SC720 Prasad Malisetty
2021-05-07 19:59 ` Stephen Boyd
2021-06-04 11:26 ` Prasad Malisetty [this message]
2021-06-04 21:44 ` Stephen Boyd
2021-05-10 15:48 ` Rob Herring
2021-05-07 10:17 ` [PATCH 2/3] arm64: dts: qcom: sc7280: Add PCIe and PHY related nodes Prasad Malisetty
2021-05-07 20:06 ` Stephen Boyd
2021-05-21 9:57 ` Prasad Malisetty
2021-06-04 21:43 ` Stephen Boyd
2021-06-06 4:02 ` Bjorn Andersson
2021-06-15 5:26 ` Prasad Malisetty
2021-05-07 10:17 ` [PATCH 3/3] arm64: dts: qcom: sc7280: Add PCIe nodes for IDP board Prasad Malisetty
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cb2a6cd35df42314c5e5230bcac752be@codeaurora.org \
--to=pmaliset@codeaurora.org \
--cc=agross@kernel.org \
--cc=bhelgaas@google.com \
--cc=bjorn.andersson@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=dianders@chromium.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=mgautam@codeaurora.org \
--cc=mka@chromium.org \
--cc=robh+dt@kernel.org \
--cc=swboyd@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).