Commit c91ebcc5 authored Nov 04, 2020 by Paul Cercueil Committed by Jonathan Cameron Nov 08, 2020

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



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: a515d648 ("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>

parent fe0b980f

drivers/iio/adc/ingenic-adc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -71,7 +71,7 @@
		#define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS 10
		#define JZ4740_ADC_BATTERY_HIGH_VREF (7500 * 0.986)
		#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 JZ_ADC_IRQ_AUX BIT(0)

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