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* mfd: Add Spreadtrum SC27xx series PMICs driverBaolin Wang2017-11-011-0/+259
This patch adds support for Spreadtrum SC27xx series PMIC MFD core, and It provides communication through the SPI interfaces. The SC27xx series PMICs contains the following 6 major components: - DCDCs - LDOs - Battery management system - Audio codec - User interface function, such as indicator, flash LED - IC level function, such as power on/off, type-c Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>