linux-kernel - [PATCH v4 0/4] Add support for Xiaomi Poco F1 EBBG variant

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Date:   Sun, 28 Aug 2022 15:57:19 -0500
From:   Joel Selvaraj <joelselvaraj.oss@...il.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Joel Selvaraj <joelselvaraj.oss@...il.com>
Subject: [PATCH v4 0/4] Add support for Xiaomi Poco F1 EBBG variant

Changes in v4:
--------------
- Update board's compatible and model property to distinguish between the
two variants. (Suggested by Krzysztof Kozlowski and Marijn Suijten)
- Update the dt-bindings as per the new compatible values.
(Fix checkpatch.pl script warnings)

Changes in v3:
--------------
- Approach suggested by Marijn Suijten and Krzysztof Kozlowski to make
git handle renames more appropriately and to avoid moving large chunks of
code. Helps with reviewing the patch.
 
Changes in v2:
--------------
- Fix issue with builds breaking across multiple commits making git bisect
harder to find where the rename has happened.

There are two variants of Xiaomi Poco F1.
- Tianma variant with NOVATEK NT36672A panel + touchscreen manufactured
  by Tianma
- EBBG variant with Focaltech FT8719 panel + touchscreen manufactured
  by EBBG

The current sdm845-xiaomi-beryllium.dts represents Tianma panel variant.

To add support for the EBBG variant:
------------------------------------
- Rename sdm845-xiaomi-beryllium.dts to sdm845-xiaomi-beryllium-common.dtsi
- Generalize the display panel node by assigning label, removing
compatible property and renaming the panel endpoints to be generic.
- Create a dts for the Tianma variant called
sdm845-xiaomi-beryllium-tianma.dts which will inherit the common dtsi and
set the compatible property for the respective display panel.
- Adjust the Makefile since the sdm845-xiaomi-beryllium.dts is now called
sdm845-xiaomi-beryllium-tianma.dts for the tianma variant.
- Create sdm845-xiaomi-beryllium-ebbg.dts for the EBBG variant which will
inherit the common dtsi and set the compatible property for the respective
display panel.

Note:
-----
Both the panels are already upstreamed and the split is based on them.
There were patches earlier for both the touchscreens, but they are not
accepted in upstream yet. Once they are accepted, we will add them to
respective variants.

Joel Selvaraj (4):
  dt-bindings: arm: qcom: update beryllium compatible property
  arm64: dts: qcom: split beryllium dts into common dtsi and tianma dts
  dt-bindings: arm: qcom: Add Xiaomi Poco F1 EBBG variant bindings
  arm64: dts: qcom: sdm845-xiaomi-beryllium-ebbg: introduce Xiaomi Poco
    F1 EBBG variant

 Documentation/devicetree/bindings/arm/qcom.yaml   |  3 ++-
 arch/arm64/boot/dts/qcom/Makefile                 |  3 ++-
 ...um.dts => sdm845-xiaomi-beryllium-common.dtsi} | 11 +++++------
 .../dts/qcom/sdm845-xiaomi-beryllium-ebbg.dts     | 15 +++++++++++++++
 .../dts/qcom/sdm845-xiaomi-beryllium-tianma.dts   | 15 +++++++++++++++
 5 files changed, 39 insertions(+), 8 deletions(-)
 rename arch/arm64/boot/dts/qcom/{sdm845-xiaomi-beryllium.dts => sdm845-xiaomi-beryllium-common.dtsi} (98%)
 create mode 100644 arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium-ebbg.dts
 create mode 100644 arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium-tianma.dts

-- 
2.37.2