linux-kernel - [PATCH V4 2/7] iio: adc: sc27xx: fix read big scale voltage not right

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Message-Id: <20220419142458.884933-3-gengcixi@gmail.com>
Date:   Tue, 19 Apr 2022 22:24:53 +0800
From:   Cixi Geng <gengcixi@...il.com>
To:     jic23@...nel.org, lars@...afoo.de, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, orsonzhai@...il.com,
        baolin.wang7@...il.com, zhang.lyra@...il.com,
        yuming.zhu1@...soc.com
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V4 2/7] iio: adc: sc27xx: fix read big scale voltage not right

From: Cixi Geng <cixi.geng1@...soc.com>

Fix wrong configuration value of SC27XX_ADC_SCALE_MASK and
SC27XX_ADC_SCALE_SHIFT by spec documetation.
Fixes: 5df362a6cf49c (iio: adc: Add Spreadtrum SC27XX PMICs ADC support)

Signed-off-by: Cixi Geng <cixi.geng1@...soc.com>
Reviewed-by: Baolin Wang <baolin.wang7@...il.com>
---
 drivers/iio/adc/sc27xx_adc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
index 00098caf6d9e..aee076c8e2b1 100644
--- a/drivers/iio/adc/sc27xx_adc.c
+++ b/drivers/iio/adc/sc27xx_adc.c
@@ -36,8 +36,8 @@
 
 /* Bits and mask definition for SC27XX_ADC_CH_CFG register */
 #define SC27XX_ADC_CHN_ID_MASK		GENMASK(4, 0)
-#define SC27XX_ADC_SCALE_MASK		GENMASK(10, 8)
-#define SC27XX_ADC_SCALE_SHIFT		8
+#define SC27XX_ADC_SCALE_MASK		GENMASK(10, 9)
+#define SC27XX_ADC_SCALE_SHIFT		9
 
 /* Bits definitions for SC27XX_ADC_INT_EN registers */
 #define SC27XX_ADC_IRQ_EN		BIT(0)
-- 
2.25.1