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Tue, 15 Jul 2025 07:29:49 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Bartosz Golaszewski , Hugo Villeneuve Cc: Bartosz Golaszewski , Hugo Villeneuve , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] gpio: pca953x: use regmap_update_bits() to improve efficiency Date: Tue, 15 Jul 2025 16:29:48 +0200 Message-ID: <175258978660.65843.2188692091974545508.b4-ty@linaro.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250714133730.6353-1-hugo@hugovil.com> References: <20250714133730.6353-1-hugo@hugovil.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: Bartosz Golaszewski On Mon, 14 Jul 2025 09:37:30 -0400, Hugo Villeneuve wrote: > Using regmap_update_bits() allows to reduce the number of I2C transfers > when updating bits that haven't changed on non-volatile registers. > > For example on a PCAL6416, when changing a GPIO direction from input to > output, the number of I2C transfers can be reduced from 4 to just 1 if > the pull resistors configuration hasn't changed and the output value > is the same as before. > > [...] Applied, thanks! [1/1] gpio: pca953x: use regmap_update_bits() to improve efficiency https://git.kernel.org/brgl/linux/c/2aa8ccab5ae67281e4d3660f8d9ee68d8b76fcef Best regards, -- Bartosz Golaszewski