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iio/adc: ingenic: Fix battery VREF for JZ4770 SoC

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The reference voltage for the battery is clearly marked as 1.2V in the
programming manual. With this fixed, the battery channel now returns
correct values.

Fixes: a515d64885 ("IIO: Ingenic JZ47xx: Add support for JZ4770 SoC ADC.")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Artur Rojek <contact@artur-rojek.eu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201104192843.67187-1-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Paul Cercueil 2020-11-04 19:28:43 +00:00 committed by Jonathan Cameron
parent fe0b980ffd
commit c91ebcc578
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/adc/ingenic-adc.c
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@ -71,7 +71,7 @@
#define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS 10 #define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS 10
#define JZ4740_ADC_BATTERY_HIGH_VREF (7500 * 0.986) #define JZ4740_ADC_BATTERY_HIGH_VREF (7500 * 0.986)
#define JZ4740_ADC_BATTERY_HIGH_VREF_BITS 12 #define JZ4740_ADC_BATTERY_HIGH_VREF_BITS 12
#define JZ4770_ADC_BATTERY_VREF 6600 #define JZ4770_ADC_BATTERY_VREF 1200
#define JZ4770_ADC_BATTERY_VREF_BITS 12 #define JZ4770_ADC_BATTERY_VREF_BITS 12
#define JZ_ADC_IRQ_AUX BIT(0) #define JZ_ADC_IRQ_AUX BIT(0)