Certain SDHC controllers may require that voltage switching happen after sepcial conditions. Added a QUIRK for such controllers to use.
For SDHCI-MSM controllers, power irq is a signal from controller to SW that it is ready for voltage switch. So added support to register voltage regulators from the msm driver and use them. Voltage switching from core layer is causing CRC/cmd timeout errors in some chipsets. Tested on: sdm845, db410c Requies patch series:"[PATCH V3 0/4] Changes for SDCC5 version" Vijay Viswanath (2): mmc: sdhci: Allow platform controlled voltage switching mmc: sdhci-msm: Use internal voltage control drivers/mmc/host/sdhci-msm.c | 99 ++++++++++++++++++++++++++++++++++++++------ drivers/mmc/host/sdhci.c | 20 ++++++--- drivers/mmc/host/sdhci.h | 2 + 3 files changed, 104 insertions(+), 17 deletions(-) -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
