On Fri, 2020-02-21 at 06:28 -0800, Guenter Roeck wrote: [...]
Building powerpc:defconfig ... failed Building powerpc:mpc83xx_defconfig ... failed
Error log: drivers/rtc/rtc-ds1307.c:1570:21: error: variable 'regmap_config' has initializer but incomplete type
as well as various follow-up errors.
The second problem affects both v5.4.y and v5.5.y.
This seems to be caused by commit 34719de919af (rtc-i2c-spi-avoid- inclusion-of-regmap-support-when-n.patch). These branches will need commit 578c2b661e2b "rtc: Kconfig: select REGMAP_I2C when necessary" as well.
Ben.