From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Ariana Lazar <ariana.lazar@microchip.com>
Cc: "Jonathan Cameron" <jic23@kernel.org>,
"David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH v5 04/10] iio: dac: mcp47feb02: Increase EEPROM Programming Write Cycle Time
Date: Thu, 10 Sep 2026 09:11:03 +0300 [thread overview]
Message-ID: <aqJJ95_uvUowDbMo@ashevche-desk.local> (raw)
In-Reply-To: <20260909-mcp47feb02_refactor-v5-4-8b67bcab93d1@microchip.com>
On Wed, Sep 09, 2026 at 05:18:47PM +0300, Ariana Lazar wrote:
> Increase the EEPROM write polling timeout to prevent -ETIMEDOUT errors and
> incomplete nonvolatile write cycle, according to the time specified in the
> datasheets (11-16 ms).
...
> ret = regmap_read_poll_timeout(data->regmap, MCP47FEB02_GAIN_CTRL_STATUS_REG_ADDR,
> eewa_val,
> !(eewa_val & MCP47FEB02_GAIN_BIT_STATUS_EEWA_MASK),
> - USEC_PER_MSEC, USEC_PER_MSEC * 5);
> + USEC_PER_MSEC, USEC_PER_MSEC * 1500);
While at it, make it clearer with
1 * USEC_PER_MSEC, 1500 * USEC_PER_MSEC);
(note that some editors marks numeric constants with distinguishable colour).
> if (ret)
> return ret;
...
> ret = regmap_read_poll_timeout(data->regmap, MCP47FEB02_GAIN_CTRL_STATUS_REG_ADDR, eewa_val,
> !(eewa_val & MCP47FEB02_GAIN_BIT_STATUS_EEWA_MASK),
> - USEC_PER_MSEC, USEC_PER_MSEC * 5);
> + USEC_PER_MSEC, USEC_PER_MSEC * 1500);
Ditto.
> if (ret)
> return ret;
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-09-10 6:11 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 14:18 [PATCH v5 00/10] Refactor Microchip MCP47FEB02 I2C driver in separate modules to add support for MCP48FEB02 SPI driver Ariana Lazar
2026-09-09 14:18 ` [PATCH v5 01/10] iio: dac: mcp47feb02: initialize dac_data field in channel data struct at probe Ariana Lazar
2026-09-09 14:32 ` sashiko-bot
2026-09-09 14:18 ` [PATCH v5 02/10] iio: dac: mcp47feb02: Fix gain field initialization for active channels Ariana Lazar
2026-09-13 21:43 ` Jonathan Cameron
2026-09-09 14:18 ` [PATCH v5 03/10] iio: dac: mcp47feb02: Return len when disabling EEPROM store Ariana Lazar
2026-09-09 14:33 ` sashiko-bot
2026-09-09 14:18 ` [PATCH v5 04/10] iio: dac: mcp47feb02: Increase EEPROM Programming Write Cycle Time Ariana Lazar
2026-09-09 14:31 ` sashiko-bot
2026-09-10 6:11 ` Andy Shevchenko [this message]
2026-09-09 14:18 ` [PATCH v5 05/10] iio: dac: mcp47feb02: Avoid unjustified probe failure on missing label Ariana Lazar
2026-09-09 14:40 ` sashiko-bot
2026-09-10 6:12 ` Andy Shevchenko
2026-09-09 14:18 ` [PATCH v5 06/10] iio: dac: mcp47feb02: correct typo from a comment Ariana Lazar
2026-09-09 14:18 ` [PATCH v5 07/10] iio: dac: mcp47feb02: rename command mask define Ariana Lazar
2026-09-09 14:39 ` sashiko-bot
2026-09-09 14:18 ` [PATCH v5 08/10] iio: dac: mcp47feb02: refactor MCP47FEB02 I2C driver into two modules Ariana Lazar
2026-09-09 14:47 ` sashiko-bot
2026-09-10 6:16 ` Andy Shevchenko
2026-09-13 21:51 ` Jonathan Cameron
2026-09-09 14:18 ` [PATCH v5 09/10] dt-bindings: iio: dac: add support for MCP48FEB02 SPI Ariana Lazar
2026-09-09 14:48 ` sashiko-bot
2026-09-09 14:18 ` [PATCH v5 10/10] iio: dac: add support for Microchip MCP48FEB02 Ariana Lazar
2026-09-09 14:51 ` sashiko-bot
2026-09-10 6:17 ` Andy Shevchenko
2026-09-10 6:18 ` [PATCH v5 00/10] Refactor Microchip MCP47FEB02 I2C driver in separate modules to add support for MCP48FEB02 SPI driver Andy Shevchenko
2026-09-13 21:55 ` Jonathan Cameron
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