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Message-Id: <20251008-ipq-pwm-v17-0-9bd43edfc7f7@outlook.com>
Date: Wed, 08 Oct 2025 19:32:52 +0400
From: George Moussalem via B4 Relay <devnull+george.moussalem.outlook.com@...nel.org>
To: Uwe Kleine-König <ukleinek@...nel.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Baruch Siach <baruch@...s.co.il>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-pwm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
George Moussalem <george.moussalem@...look.com>,
Devi Priya <quic_devipriy@...cinc.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Baruch Siach <baruch.siach@...lu.com>,
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
Bjorn Andersson <andersson@...nel.org>
Subject: [PATCH v17 0/9] Add PWM support for IPQ chipsets
Add PWM driver and binding support for IPQ chipsets.
Also, add nodes to add support for pwm in ipq6018, ipq5018, ipq5332, and
ipq9574.
I've picked up work based on Devi's last submission (v15) which dates
back to 05 October 2023 as below SoCs are still active.
Signed-off-by: George Moussalem <george.moussalem@...look.com>
---
Changes in v17:
- Picked up RB tags from Dmitry and Rob
- Removed unnecessary code comments
- Corrected reg property in PWM node in ipq6018 DTS in line with
expected nr of bytes for address and size cells
- Link to v16: https://lore.kernel.org/r/20251001-ipq-pwm-v16-0-300f237e0e68@outlook.com
Changes in v16:
- Removed reg description in bindings as the offset is not relative to
the TCSR region anymore since simple-mfd support was dropped and PWM
nodes defined as their own nodes, not child nodes. Updated the example
too.
- Dropped patch to add simple-mfd support to the qcom,tcsr bindings
- Simplified code to calculate divs and duty cycle as per Uwe's comments
- Removed unused pwm_chip struct from ipq_pwm_chip struct
- Removed unnecessary cast as per Uwe's comment
- Replaced devm_clk_get & clk_prepare_enable by devm_clk_get_enabled
- Replaced pwmchip_add by devm_pwmchip_add and removed .remove function
- Removed .owner from driver struct
- Added compatibles to the bindings and nodes to the device trees to add
PWM support in the IPQ5018, IPQ5332, and IPQ9574 SoCs
- Link to v15: https://lore.kernel.org/r/20231005160550.2423075-1-quic_devipriy@quicinc.com
Changes in v15:
- No change
- Link to v14: https://lore.kernel.org/r/20231005033053.2626465-1-quic_devipriy@quicinc.com
Changes in v14:
- Picked up the R-b tag
- Link to v13: https://lore.kernel.org/r/20231004090449.256229-1-quic_devipriy@quicinc.com
Changes in v13:
- Updated the file name to match the compatible
- Sorted the properties and updated the order in the required field
- Dropped the syscon node from examples
- Link to v12: https://lore.kernel.org/r/20230925065915.3467964-1-quic_devipriy@quicinc.com
Changes in v12:
- Picked up the R-b tag
Changes in v11:
- No change
Changes in v10:
- No change
Changes in v9:
- Add 'ranges' property to example (Rob)
- Drop label in example (Rob)
Changes in v8:
- Add size cell to 'reg' (Rob)
Changes in v7:
- Use 'reg' instead of 'offset' (Rob)
- Drop 'clock-names' and 'assigned-clock*' (Bjorn)
- Use single cell address/size in example node (Bjorn)
- Move '#pwm-cells' lower in example node (Bjorn)
- List 'reg' as required
Changes in v6:
- Device node is child of TCSR; remove phandle (Rob Herring)
- Add assigned-clocks/assigned-clock-rates (Uwe Kleine-König)
Changes in v5:
- Use qcom,pwm-regs for phandle instead of direct regs (Bjorn
Andersson, Kathiravan T)
Changes in v4:
- Update the binding example node as well (Rob Herring's bot)
Changes in v3:
- s/qcom,pwm-ipq6018/qcom,ipq6018-pwm/ (Rob Herring)
Changes in v2:
- Make #pwm-cells const (Rob Herring)
---
George Moussalem (6):
dt-bindings: pwm: qcom,ipq6018-pwm: Add compatible for ipq5018
dt-bindings: pwm: qcom,ipq6018-pwm: Add compatible for ipq5332
dt-bindings: pwm: qcom,ipq6018-pwm: Add compatible for ipq9574
arm64: dts: qcom: ipq5018: add pwm node
arm64: dts: qcom: ipq5332: add pwm node
arm64: dts: qcom: ipq9574: add pwm node
Devi Priya (3):
dt-bindings: pwm: add IPQ6018 binding
pwm: driver for qualcomm ipq6018 pwm block
arm64: dts: qcom: ipq6018: add pwm node
.../devicetree/bindings/pwm/qcom,ipq6018-pwm.yaml | 51 +++++
arch/arm64/boot/dts/qcom/ipq5018.dtsi | 10 +
arch/arm64/boot/dts/qcom/ipq5332.dtsi | 10 +
arch/arm64/boot/dts/qcom/ipq6018.dtsi | 10 +
arch/arm64/boot/dts/qcom/ipq9574.dtsi | 10 +
drivers/pwm/Kconfig | 12 +
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-ipq.c | 212 +++++++++++++++++++++
8 files changed, 316 insertions(+)
---
---
Devi Priya (3):
dt-bindings: pwm: add IPQ6018 binding
pwm: driver for qualcomm ipq6018 pwm block
arm64: dts: qcom: ipq6018: add pwm node
George Moussalem (6):
dt-bindings: pwm: qcom,ipq6018-pwm: Add compatible for ipq5018
dt-bindings: pwm: qcom,ipq6018-pwm: Add compatible for ipq5332
dt-bindings: pwm: qcom,ipq6018-pwm: Add compatible for ipq9574
arm64: dts: qcom: ipq5018: add pwm node
arm64: dts: qcom: ipq5332: add pwm node
arm64: dts: qcom: ipq9574: add pwm node
.../devicetree/bindings/pwm/qcom,ipq6018-pwm.yaml | 51 +++++
arch/arm64/boot/dts/qcom/ipq5018.dtsi | 10 +
arch/arm64/boot/dts/qcom/ipq5332.dtsi | 10 +
arch/arm64/boot/dts/qcom/ipq6018.dtsi | 10 +
arch/arm64/boot/dts/qcom/ipq9574.dtsi | 10 +
drivers/pwm/Kconfig | 12 ++
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-ipq.c | 212 +++++++++++++++++++++
8 files changed, 316 insertions(+)
---
base-commit: 4711da77d9dc21e8c3c49fa9664ad6113a02237e
change-id: 20250922-ipq-pwm-c8c75c147d52
Best regards,
--
George Moussalem <george.moussalem@...look.com>
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