From: Claudiu Beznea <claudiu.beznea@microchip.com>
To: <eugen.hristev@microchip.com>, <jic23@kernel.org>,
<lars@metafoo.de>, <nicolas.ferre@microchip.com>,
<alexandre.belloni@bootlin.com>
Cc: <linux-iio@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Claudiu Beznea <claudiu.beznea@microchip.com>
Subject: [PATCH] iio: adc: at91-sama5d2_adc: get rid of 5 degrees Celsius adjustment
Date: Thu, 20 Oct 2022 13:27:05 +0300 [thread overview]
Message-ID: <20221020102705.3639204-1-claudiu.beznea@microchip.com> (raw)
On SAMA7G5 final chip version there is no need for 5 degrees Celsius
adjustment when computing junction temperature, thus, remove it.
Fixes: 5ab38b81895c ("iio: adc: at91-sama5d2_adc: add support for temperature sensor")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/iio/adc/at91-sama5d2_adc.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 33e251552214..870f4cb60923 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -2307,11 +2307,9 @@ static int at91_adc_temp_sensor_init(struct at91_adc_state *st,
clb->p6 = buf[AT91_ADC_TS_CLB_IDX_P6];
/*
- * We prepare here the conversion to milli and also add constant
- * factor (5 degrees Celsius) to p1 here to avoid doing it on
- * hotpath.
+ * We prepare here the conversion to milli to avoid doing it on hotpath.
*/
- clb->p1 = clb->p1 * 1000 + 5000;
+ clb->p1 = clb->p1 * 1000;
free_buf:
kfree(buf);
--
2.34.1
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next reply other threads:[~2022-10-20 11:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 10:27 Claudiu Beznea [this message]
2022-10-23 12:21 ` [PATCH] iio: adc: at91-sama5d2_adc: get rid of 5 degrees Celsius adjustment Jonathan Cameron
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