Re: [PATCH 0/2] RTC support for QEMU RISC-V virt machine

[Richard W.M. Jones]

On Tue, Sep 24, 2019 at 08:42:36AM +0000, Anup Patel wrote:
> This series adds RTC device to QEMU RISC-V virt machine. We have
> selected Goldfish RTC device model for this. It's a pretty simple
> synthetic device with few MMIO registers and no dependency external
> clock. The driver for Goldfish RTC is already available in Linux so
> we just need to enable it in Kconfig for RISCV and also update Linux
> defconfigs.
> 
> We have tested this series with Linux-5.3 plus defconfig changes
> available in 'goldfish_rtc_v1' branch of:
> https://github.com/avpatel/linux.git

Why was this device chosen instead of kvm-clock?

Rich.

> Anup Patel (2):
>   hw: timer: Add Goldfish RTC device
>   riscv: virt: Use Goldfish RTC device
> 
>  hw/riscv/Kconfig                |   1 +
>  hw/riscv/virt.c                 |  15 +++
>  hw/timer/Kconfig                |   3 +
>  hw/timer/Makefile.objs          |   1 +
>  hw/timer/goldfish_rtc.c         | 221 ++++++++++++++++++++++++++++++++
>  include/hw/riscv/virt.h         |   2 +
>  include/hw/timer/goldfish_rtc.h |  45 +++++++
>  7 files changed, 288 insertions(+)
>  create mode 100644 hw/timer/goldfish_rtc.c
>  create mode 100644 include/hw/timer/goldfish_rtc.h
> 
> --
> 2.17.1

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