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Message-Id: <20231024090631.3359592-1-jim.t90615@gmail.com>
Date:   Tue, 24 Oct 2023 17:06:28 +0800
From:   Jim Liu <jim.t90615@...il.com>
To:     jim.t90615@...il.com, JJLIU0@...oton.com, linus.walleij@...aro.org,
        krzysztof.kozlowski+dt@...aro.org, brgl@...ev.pl
Cc:     linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, openbmc@...ts.ozlabs.org
Subject: [PATCH v6 0/3] Add Nuvoton NPCM SGPIO feature

This SGPIO controller is for NUVOTON NPCM7xx and NPCM8xx SoC.
Nuvoton NPCM SGPIO module is combine serial to parallel IC (HC595)
and parallel to serial IC (HC165), and use APB3 clock to control it.
This interface has 4 pins  (D_out , D_in, S_CLK, LDSH).
NPCM7xx/NPCM8xx have two sgpio module each module can support up
to 64 output pins,and up to 64 input pin, the pin is only for gpi or gpo.
GPIO pins have sequential, First half is gpo and second half is gpi.


Jim Liu (3):
  dt-bindings: gpio: add NPCM sgpio driver bindings
  arm: dts: nuvoton: npcm: Add sgpio feature
  gpio: nuvoton: Add Nuvoton NPCM sgpio driver

 .../bindings/gpio/nuvoton,sgpio.yaml          |  86 +++
 .../dts/nuvoton/nuvoton-common-npcm7xx.dtsi   |  24 +
 drivers/gpio/Kconfig                          |   8 +
 drivers/gpio/Makefile                         |   1 +
 drivers/gpio/gpio-npcm-sgpio.c                | 650 ++++++++++++++++++
 5 files changed, 769 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml
 create mode 100644 drivers/gpio/gpio-npcm-sgpio.c

-- 
2.25.1

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