linux-kernel - [PATCH 0/5] Add LPASS LPI pin controller support for SM6350

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Message-Id: <20260128-sm6350-lpi-tlmm-v1-0-36583f2a2a2a@fairphone.com>
Date: Wed, 28 Jan 2026 13:26:48 +0100
From: Luca Weiss <luca.weiss@...rphone.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Linus Walleij <linusw@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH 0/5] Add LPASS LPI pin controller support for SM6350

Introduce support for the LPASS LPI pin controller for the Qualcomm
SM6350 SoC, by adding the dt-bindings, driver, dts bits and enabling it
in the arm64 defconfig.

The custom slew offset for gpio14 is described as
"qcom,lpi-slew-base-tbl" in the downstream dts[0]. I've tried to find
some reasonable solution to have this handled correctly in the patches
here, but suggestions are welcome how to improve the situation. There's
of course several ways to implement a solution for this.

[0] https://gerrit-public.fairphone.software/plugins/gitiles/kernel/msm-extra/devicetree/+/refs/heads/kernel/13/fp4/qcom/lagoon-lpi.dtsi#25

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
Luca Weiss (5):
      dt-bindings: pinctrl: qcom: Add SM6350 LPI pinctrl
      pinctrl: qcom: lpass-lpi: Add ability to use SPARE_1 for slew control
      pinctrl: qcom: Add SM6350 LPASS LPI TLMM
      arm64: dts: qcom: sm6350: add LPASS LPI pin controller
      arm64: defconfig: Enable LPASS LPI pin controller for SM6350

 .../pinctrl/qcom,sm6350-lpass-lpi-pinctrl.yaml     | 124 +++++++++++++++++
 arch/arm64/boot/dts/qcom/sm6350.dtsi               |  66 +++++++++
 arch/arm64/configs/defconfig                       |   1 +
 drivers/pinctrl/qcom/Kconfig                       |   9 ++
 drivers/pinctrl/qcom/Makefile                      |   1 +
 drivers/pinctrl/qcom/pinctrl-lpass-lpi.c           |   2 +
 drivers/pinctrl/qcom/pinctrl-lpass-lpi.h           |  20 +++
 drivers/pinctrl/qcom/pinctrl-sm6350-lpass-lpi.c    | 149 +++++++++++++++++++++
 8 files changed, 372 insertions(+)
---
base-commit: 4f938c7d3b25d87b356af4106c2682caf8c835a2
change-id: 20260128-sm6350-lpi-tlmm-bdca4deb5641

Best regards,
-- 
Luca Weiss <luca.weiss@...rphone.com>