So far, the code and the binding for the RZ/N1D RTC assumed an input clock of 32768Hz, so it was not explicitly described. It makes sense to do this, though. For one reason, clocks with other frequencies might be used which this RTC supports via the SCMP counting method. Also, the upcoming R-Car Gen5 have only the SCMP method described, so we need to use it there. This series is for collecting comments about the approach. I am aware that the DTS changes no to go in separately from the code changes. And the last patch will be updated and resent once I have tested these patches on hardware. That might take a while but I'd like the preparational patches to go in earlier. They are benefitial for N1D, after all. The series has been tested on a Renesas RZ/N1D board with hacked devicetree values. Looking forward to comments. Wolfram Sang (4): dt-bindings: rtc: rzn1: add optional second clock ARM: dts: renesas: r9a06g032: add second clock input to RTC rtc: rzn1: support input frequencies other than 32768Hz WIP rtc: rzn1: add driver support for R-Car Gen5 .../bindings/rtc/renesas,rzn1-rtc.yaml | 8 ++- .../dts/renesas/r9a06g032-rzn1d400-db.dts | 4 ++ arch/arm/boot/dts/renesas/r9a06g032.dtsi | 4 +- drivers/rtc/rtc-rzn1.c | 67 ++++++++++++++++--- 4 files changed, 70 insertions(+), 13 deletions(-) -- 2.47.2
