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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-70374f791fbsm165072a34.27.2024.07.08.14.19.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 08 Jul 2024 14:19:13 -0700 (PDT) Message-ID: Date: Mon, 8 Jul 2024 16:19:12 -0500 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 2/7] spi: bitbang: Implement support for MOSI idle state configuration To: Marcelo Schmitt , broonie@kernel.org, lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, nuno.sa@analog.com, corbet@lwn.net, marcelo.schmitt1@gmail.com Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-spi@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org References: Content-Language: en-US From: David Lechner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/29/24 2:05 PM, Marcelo Schmitt wrote: > Some SPI peripherals may require strict MOSI line state when the controller > is not clocking out data. > Implement support for MOSI idle state configuration (low or high) by > setting the data output line level on controller setup and after transfers. > Bitbang operations now call controller specific set_mosi_idle() call back > to set MOSI to its idle state. > The MOSI line is kept at its idle state if no tx buffer is provided. > > Acked-by: Nuno Sa > Reviewed-by: David Lechner > Signed-off-by: Marcelo Schmitt > --- FYI, this doesn't apply cleanly to spi-next and needs to be rebased. (conflicts with https://lore.kernel.org/all/20240517194104.747328-3-andriy.shevchenko@linux.intel.com/)