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Mon, 19 Oct 2026 13:25:41 -0700 (PDT) Received: from localhost ([2804:30c:4067:b00:a68b:4892:7af1:b51d]) by smtp.gmail.com with ESMTPSA id 71dfb90a1353d-5ea9b536ccdsm10865354e0c.13.2026.10.19.13.25.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Oct 2026 13:25:40 -0700 (PDT) Date: Mon, 19 Oct 2026 17:26:43 -0300 From: Marcelo Schmitt To: Jonathan Cameron Cc: Joshua Crofts , Marcelo Schmitt , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux@analog.com, nuno.sa@analog.com, dlechner@baylibre.com, andy@kernel.org, Michael.Hennerich@analog.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, corbet@lwn.net, skhan@linuxfoundation.org Subject: Re: [PATCH v5 03/15] iio: adc: ad4134: Apply reset recovery wait time Message-ID: References: <9f6d78d607b2f9a896513535fefa3329d52c4464.1792200021.git.marcelo.schmitt@analog.com> <20261017075513.3a959a6a@systembl0wer> <20261017201331.5d835dc4@jic23-hlaptop> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261017201331.5d835dc4@jic23-hlaptop> On 10/17, Jonathan Cameron wrote: > On Sat, 17 Oct 2026 07:55:13 +0200 > Joshua Crofts wrote: > > > On Fri, 16 Oct 2026 22:57:08 -0300 > > Marcelo Schmitt wrote: > > > > > Add a reset recovery wait time to avoid any SPI transfer from running too > > > soon during device probe. > > > > > > Fixes: e0bc6d7e2584 ("iio: adc: Initial support for AD4134") > > > Signed-off-by: Marcelo Schmitt > > > --- > > > New patch in v5. > > > > > > drivers/iio/adc/ad4134.c | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git a/drivers/iio/adc/ad4134.c b/drivers/iio/adc/ad4134.c > > > index 40b27b01f126..d555874b4959 100644 > > > --- a/drivers/iio/adc/ad4134.c > > > +++ b/drivers/iio/adc/ad4134.c > > > @@ -442,6 +442,7 @@ static int ad4134_probe(struct spi_device *spi) > > > return dev_err_probe(dev, PTR_ERR(rst), > > > "failed to get and deassert reset\n"); > > > > > > + fsleep(AD4134_RESET_TIME_US); > > Sashiko calls out that this is currently 10 seconds, which seems unlikely! It was actually correct. AD4134_RESET_TIME_US was misset. Fixed that for v6.