On 5/10/22 7:25 PM, Nishanth Menon wrote:
Introduce support for Texas Instruments Real Time Clock controller on newer K3 family of SoCs such as AM62x. The hardware module that is being supported is the "digital only" version which does'nt have capability of external wakeup sources and external power backup. However, for many practical applications, this should suffice as RTC is operational across low power sequences. The hardware block by itself is split into two distinct domains internally to further reduce the power consumption with the actual counter block and comparators clocked off a 32k clock source (which based on SoC integration can be sourced by an external crystal) and an register interface block which is driven by the bus clock. While optimal from power perspective, it does create some complicated synchronizations and sequences that one must be wary of in the driver handling. Signed-off-by: Nishanth Menon <nm@xxxxxx> --- Changes since V1: (Andrew's comments): * Moved entirely to regmap fields - except for setting time, which I have documented as to why regmap is necessary * Dropped the redundant MOD_ALIAS
Isn't regmap fun :) Acked-by: Andrew Davis <afd@xxxxxx>
