From: Krishna Kurapati <quic_kriskura@quicinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Rob Herring <robh+dt@kernel.org>, Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Stephen Boyd <swboyd@chromium.org>,
"Doug Anderson" <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
Wesley Cheng <quic_wcheng@quicinc.com>
Cc: <devicetree@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-phy@lists.infradead.org>, <quic_pkondeti@quicinc.com>,
<quic_ppratap@quicinc.com>, <quic_vpulyala@quicinc.com>,
Krishna Kurapati <quic_kriskura@quicinc.com>
Subject: [v5 0/3] Add QCOM SNPS PHY overriding params support
Date: Mon, 16 May 2022 23:20:07 +0530 [thread overview]
Message-ID: <1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com> (raw)
Added support for overriding tuning parameters in QCOM SNPS PHY
from device tree. This parameter tuning is required to tune the
hs signal on dp/dm lines for electrical compliance to be successful.
changes in v5:
Fixed nitpicks in code.
Added minimum and maximum for each parameter added in dt-bindings.
Added proper suffixes to each parameter as per dtschema.
changes in v4:
Fixed nitpicks in code.
Initial compliance test results showed overshoot in the middle of eye
diagram. The current dt values were put in place to correct it and fix
overshoot issue.
changes in v3:
Added support for phy tuning parameters to be represented in bps and
corresponding register values to be written are obtained by traversing
through data map declared in the driver.
changes in v2:
Reading the individual fields in each overriding register from
device tree.
Krishna Kurapati (2):
phy: qcom-snps: Add support for overriding phy tuning parameters
arm64: dts: qcom: sc7280: Update SNPS Phy params for SC7280 IDP device
Sandeep Maheswaram (1):
dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params
bindings
.../bindings/phy/qcom,usb-snps-femto-v2.yaml | 105 ++++++++
arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 6 +
drivers/phy/qualcomm/phy-qcom-snps-femto-v2.c | 268 ++++++++++++++++++++-
3 files changed, 377 insertions(+), 2 deletions(-)
--
2.7.4
next reply other threads:[~2022-05-16 17:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 17:50 Krishna Kurapati [this message]
2022-05-16 17:50 ` [v5 1/3] dt-bindings: phy: qcom,usb-snps-femto-v2: Add phy override params bindings Krishna Kurapati
2022-05-17 6:23 ` Krzysztof Kozlowski
2022-05-17 12:40 ` Rob Herring
2022-05-16 17:50 ` [v5 2/3] phy: qcom-snps: Add support for overriding phy tuning parameters Krishna Kurapati
2022-05-17 3:32 ` Pavan Kondeti
2022-05-16 17:50 ` [v5 3/3] arm64: dts: qcom: sc7280: Update SNPS Phy params for SC7280 IDP device Krishna Kurapati
2022-05-17 6:21 ` [v5 0/3] Add QCOM SNPS PHY overriding params support Krzysztof Kozlowski
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=1652723410-1630-1-git-send-email-quic_kriskura@quicinc.com \
--to=quic_kriskura@quicinc.com \
--cc=agross@kernel.org \
--cc=bjorn.andersson@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=dianders@chromium.org \
--cc=gregkh@linuxfoundation.org \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-phy@lists.infradead.org \
--cc=linux-usb@vger.kernel.org \
--cc=mka@chromium.org \
--cc=quic_pkondeti@quicinc.com \
--cc=quic_ppratap@quicinc.com \
--cc=quic_vpulyala@quicinc.com \
--cc=quic_wcheng@quicinc.com \
--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).