From: Linus Walleij <linus.walleij@linaro.org>
To: Piyush Malgujar <pmalgujar@marvell.com>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, brgl@bgdev.pl, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, rric@kernel.org,
cchavva@marvell.com, wsadowski@marvell.com
Subject: Re: [PATCH 2/5] dt-bindings: gpio: gpio-thunderx: Describe pin-cfg option
Date: Fri, 3 Jun 2022 12:35:57 +0200 [thread overview]
Message-ID: <CACRpkdaOd0-k_mt0ZrKT-DbVc3f0b5uXXmXpBNH=hq3BGCB+vQ@mail.gmail.com> (raw)
In-Reply-To: <20220603090618.GA27121@Dell2s-9>
On Fri, Jun 3, 2022 at 11:06 AM Piyush Malgujar <pmalgujar@marvell.com> wrote:
> The purpose of this pin-cfg entry is different than the standard GPIO pin config usage.
> It is to write a value to GPIO_BIT_CFG register which is used to configure fields like
> pin function, selecting which signal is reported to GPIO output or which signal GPIO
> input need to connect, filters, XOR and output mode.
Then implement pin control for this driver instead of inventing a custom hack?
https://docs.kernel.org/driver-api/pin-control.html
Several drivers implement pin control with a GPIO front-end, for example:
drivers/gpio/gpio-pl061.c is used as a front end with
drivers/pinctrl/pinctrl-single.c
There are also composite drivers in drivers/pinctrl that implement both
pincontrol (incl muxing) and GPIO, such as drivers/pinctrl/pinctrl-sx150x.c
Yours,
Linus Walleij
next prev parent reply other threads:[~2022-06-03 10:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-27 14:46 [PATCH 0/5] gpio: thunderx: Marvell GPIO changes Piyush Malgujar
2022-04-27 14:46 ` [PATCH 1/5] gpio: thunderx: avoid potential deadlock Piyush Malgujar
2022-05-02 11:18 ` Bartosz Golaszewski
2022-05-25 13:17 ` Piyush Malgujar
2022-05-31 17:30 ` Bartosz Golaszewski
2022-04-27 14:46 ` [PATCH 2/5] dt-bindings: gpio: gpio-thunderx: Describe pin-cfg option Piyush Malgujar
2022-05-01 22:15 ` Linus Walleij
2022-06-03 9:06 ` Piyush Malgujar
2022-06-03 10:35 ` Linus Walleij [this message]
2022-06-13 8:04 ` Piyush Malgujar
2022-06-25 22:59 ` Linus Walleij
2022-06-26 10:40 ` Krzysztof Kozlowski
2022-04-27 14:46 ` [PATCH 3/5] gpio: thunderx: Configure GPIO pins at probe Piyush Malgujar
2022-04-28 1:59 ` kernel test robot
2022-04-27 14:46 ` [PATCH 4/5] gpio: thunderx: extend PIN_SEL_MASK to cover otx2 platform Piyush Malgujar
2022-04-27 14:46 ` [PATCH 5/5] gpio: thunderx: change handler for level interrupt Piyush Malgujar
2022-05-01 22:17 ` Linus Walleij
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