From: "Michael Walle" <mwalle@kernel.org>
To: <longzhao@ambarella.com>, "Bartosz Golaszewski" <brgl@kernel.org>,
<linux-gpio@vger.kernel.org>
Cc: "Linus Walleij" <linusw@kernel.org>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski@oss.qualcomm.com>,
"Conor Dooley" <conor+dt@kernel.org>,
<devicetree@vger.kernel.org>, "Long Zhao" <zl020895@163.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/7] gpiolib: regmap: add GPIO_REGMAP_QUIRK_SET_AFTER_DIR
Date: Fri, 09 Oct 2026 13:17:11 +0200 [thread overview]
Message-ID: <DM09KHJNRHUX.2N8J0WISE3J9Z@kernel.org> (raw)
In-Reply-To: <20261009-cv75-gpio-v1-2-5836bd438423@ambarella.com>
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On Fri Oct 9, 2026 at 12:57 PM CEST, Long Zhao via B4 Relay wrote:
> From: Long Zhao <longzhao@ambarella.com>
>
> Some controllers ignore output writes while a line is still an input.
> Add a behaviour flag so the output value is written after the direction
> change. This is a legacy quirk. New hardware must not use it.
>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Signed-off-by: Long Zhao <longzhao@ambarella.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
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next prev parent reply other threads:[~2026-10-09 11:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-09 10:57 [PATCH 0/7] gpio: add Ambarella CV75 PL061 support Long Zhao via B4 Relay
2026-10-09 10:57 ` [PATCH 1/7] dt-bindings: gpio: pl061: add Ambarella CV75 variant Long Zhao via B4 Relay
2026-10-09 11:32 ` Krzysztof Kozlowski
2026-10-09 10:57 ` [PATCH 2/7] gpiolib: regmap: add GPIO_REGMAP_QUIRK_SET_AFTER_DIR Long Zhao via B4 Relay
2026-10-09 11:17 ` Michael Walle [this message]
2026-10-09 10:57 ` [PATCH 3/7] gpio: pl061: convert register access to regmap Long Zhao via B4 Relay
2026-10-09 10:57 ` [PATCH 4/7] gpio: pl061: use IRQ_TYPE_LEVEL_MASK and IRQ_TYPE_EDGE_BOTH Long Zhao via B4 Relay
2026-10-09 10:57 ` [PATCH 5/7] gpio: pl061: use cleanup helpers for locks Long Zhao via B4 Relay
2026-10-09 10:57 ` [PATCH 6/7] gpio: pl061: switch data path to gpio-regmap Long Zhao via B4 Relay
2026-10-09 10:58 ` [PATCH 7/7] gpio: pl061: add Ambarella register-layout variant Long Zhao via B4 Relay
2026-10-09 11:32 ` [PATCH 0/7] gpio: add Ambarella CV75 PL061 support Krzysztof Kozlowski
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