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([2600:8803:e7e4:500:a950:74e5:81f2:8c89]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7ebcafda2ffsm8855734a34.12.2026.07.11.08.45.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 11 Jul 2026 08:45:26 -0700 (PDT) Message-ID: Date: Sat, 11 Jul 2026 10:45:26 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 2/4] iio: adc: ltc2378: Add support for LTC2378-20 and similar ADCs To: Marcelo Schmitt , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, nuno.sa@analog.com, Michael.Hennerich@analog.com, andy@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, julianbraha@gmail.com, marcelo.schmitt1@gmail.com References: <965e5a31bf10cb49b53f7351266eeed55e8f6bd5.1783629101.git.marcelo.schmitt@analog.com> Content-Language: en-US From: David Lechner In-Reply-To: <965e5a31bf10cb49b53f7351266eeed55e8f6bd5.1783629101.git.marcelo.schmitt@analog.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/9/26 3:49 PM, Marcelo Schmitt wrote: > Support for LTC2378-20 and similar analog-to-digital converters. > ... > +static int ltc2378_convert_and_acquire(struct ltc2378_state *st) > +{ > + int ret; > + > + guard(mutex)(&st->lock); > + /* Cause a rising edge of CNV to initiate a new ADC conversion */ > + gpiod_set_value_cansleep(st->cnv_gpio, 1); Wouldn't mind a comment here explaining where 4 comes from. > + fsleep(4); > + ret = spi_sync_transfer(st->spi, &st->xfer, 1); > + gpiod_set_value_cansleep(st->cnv_gpio, 0); > + > + return ret; > +} > +