[PATCH v5 04/10] iio: dac: mcp47feb02: Increase EEPROM Programming Write Cycle Time
From: Ariana Lazar
Date: Wed Sep 09 2026 - 13:07:19 EST
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).
Signed-off-by: Ariana Lazar <ariana.lazar@xxxxxxxxxxxxx>
---
drivers/iio/dac/mcp47feb02.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/dac/mcp47feb02.c b/drivers/iio/dac/mcp47feb02.c
index 2ee981393aa1a2dc0bf65d25ab937132fe2e7bf1..53a7bf4e71c46e75dff8bb5b16c343e7552f6901 100644
--- a/drivers/iio/dac/mcp47feb02.c
+++ b/drivers/iio/dac/mcp47feb02.c
@@ -449,7 +449,7 @@ static int mcp47feb02_write_to_eeprom(struct mcp47feb02_data *data, unsigned int
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);
if (ret)
return ret;
@@ -509,7 +509,7 @@ static ssize_t store_eeprom_store(struct device *dev, struct device_attribute *a
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);
if (ret)
return ret;
--
2.43.0