linux-kernel - [PATCH 0/2] Add driver support for ESWIN EIC7700 PWM controller

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Message-Id: <20251205090411.1388-1-dongxuyang@eswincomputing.com>
Date: Fri,  5 Dec 2025 17:04:11 +0800
From: dongxuyang@...incomputing.com
To: ukleinek@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	p.zabel@...gutronix.de,
	linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: ningyu@...incomputing.com,
	linmin@...incomputing.com,
	xuxiang@...incomputing.com,
	wangguosheng@...incomputing.com,
	pinkesh.vaghela@...fochips.com,
	Xuyang Dong <dongxuyang@...incomputing.com>
Subject: [PATCH 0/2] Add driver support for ESWIN EIC7700 PWM controller

From: Xuyang Dong <dongxuyang@...incomputing.com>

Add support for the ESWIN EIC7700 PWM (Pulse Width Modulation) based on
Synopsys DWC PWM.

Features:
The EIC7700 PWM driver supports a duty cycle range from 0% to 100%, with
explicit support added for both 0% and 100% duty cycles.

Supported chips:
ESWIN EIC7700 series SoC.

Test:
Tested this patch on the Sifive HiFive Premier P550 (which used the EIC7700
SoC).

Xuyang Dong (2):
  dt-bindings: pwm: eswin: Add EIC7700 pwm controller
  pwm: eswin: Add EIC7700 pwm driver

 .../bindings/pwm/eswin,eic7700-pwm.yaml       |  73 ++++++
 drivers/pwm/Kconfig                           |  12 +
 drivers/pwm/Makefile                          |   1 +
 drivers/pwm/pwm-dwc-core.c                    |  76 ++++--
 drivers/pwm/pwm-dwc-eic7700.c                 | 231 ++++++++++++++++++
 drivers/pwm/pwm-dwc.h                         |  16 +-
 6 files changed, 384 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pwm/eswin,eic7700-pwm.yaml
 create mode 100644 drivers/pwm/pwm-dwc-eic7700.c

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2.34.1