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([2600:8803:e7e4:500:2a8b:8d9e:f359:9a35]) by smtp.gmail.com with ESMTPSA id 5614622812f47-4a1adca6bedsm4124082b6e.8.2026.07.09.08.54.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 09 Jul 2026 08:54:39 -0700 (PDT) Message-ID: <517f688a-6958-473f-bd4d-65dcb56278cb@baylibre.com> Date: Thu, 9 Jul 2026 10:54:37 -0500 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/6] iio: adc: adi-axi-adc: Add support for CRC To: Janani Sunil , =?UTF-8?Q?Nuno_S=C3=A1?= , Michael Hennerich , Jonathan Cameron , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Olivier Moysan , Philipp Zabel , Linus Walleij , Bartosz Golaszewski , Jonathan Corbet , Shuah Khan Cc: linux@analog.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-doc@vger.kernel.org, jananisunil.dev@gmail.com References: <20260709-ad7768-driver-v1-0-44e1194fd96a@analog.com> <20260709-ad7768-driver-v1-3-44e1194fd96a@analog.com> Content-Language: en-US From: David Lechner In-Reply-To: <20260709-ad7768-driver-v1-3-44e1194fd96a@analog.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/9/26 3:50 AM, Janani Sunil wrote: > Add support for enabling and disabling Cyclic Redundancy Check (CRC) > processing in the AXI ADC backend. CRC provides data integrity verification > for high-speed ADC data streams, ensuring reliable data transfer between > the ADC frontend and backend processing systems. > > Signed-off-by: Janani Sunil > --- > drivers/iio/adc/adi-axi-adc.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c > index 26b9c75bd4d8..8af42d26aac0 100644 > --- a/drivers/iio/adc/adi-axi-adc.c > +++ b/drivers/iio/adc/adi-axi-adc.c > @@ -47,6 +47,8 @@ > #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) > > #define ADI_AXI_ADC_REG_CNTRL_3 0x004c > +#define ADI_AXI_ADC_REG_CNTRL3_CRC_EN_MASK BIT(8) ADI_AXI_ADC_CNTRL_3_CRC_EN_MASK to match the existing naming pattern. Also, add a comment that bit 8 is shared by all AXI ADC cores while bits 7-0 are custom per HDL project. (That is why they have names like AD485X instead of AXI_ADC). > + > #define AXI_AD485X_CNTRL_3_OS_EN_MSK BIT(2) > #define AXI_AD485X_CNTRL_3_PACKET_FORMAT_MSK GENMASK(1, 0) > #define AXI_AD485X_PACKET_FORMAT_20BIT 0x0 > @@ -567,6 +569,22 @@ static int axi_adc_reg_access(struct iio_backend *back, unsigned int reg, > return regmap_write(st->regmap, reg, writeval); > } >