Re: [PATCH v4 0/3] MediaTek Security random number generator support

[Neal Liu]

Dear Matthias, Rob, Mark,
	Just gentle ping.
	Thanks


On Mon, 2019-06-24 at 15:24 +0800, Neal Liu wrote:
> These patch series introduce a generic rng driver for Trustzone
> based kernel driver which would like to communicate with ATF
> SIP services.
> 
> Patch #1 initials SMC fid table for Mediatek SIP interfaces and
> adds HWRNG related SMC call.
> 
> Patch #2..3 adds mtk-sec-rng kernel driver for Trustzone based SoCs.
> For MediaTek SoCs on ARMv8 with TrustZone enabled, peripherals like
> entropy sources is not accessible from normal world (linux) and
> rather accessible from secure world (ATF/TEE) only. This driver aims
> to provide a generic interface to ATF rng service.
> 
> 
> changes since v1:
> - rename mt67xx-rng to mtk-sec-rng since all MediaTek ARMv8 SoCs
> can reuse this driver.
> - refine coding style and unnecessary check.
> 
> changes since v2:
> - remove unused comments.
> - remove redundant variable.
> 
> changes since v3:
> - add dt-bindings for MediaTek rng with TrustZone enabled
> - revise HWRNG SMC call fid
> 
> 
> Neal Liu (3):
>   soc: mediatek: add SMC fid table for SIP interface
>   dt-bindings: rng: add bindings for MediaTek ARMv8 SoCs
>   hwrng: add mtk-sec-rng driver
> 
>  .../devicetree/bindings/rng/mtk-sec-rng.txt   | 10 ++
>  drivers/char/hw_random/Kconfig                | 16 +++
>  drivers/char/hw_random/Makefile               |  1 +
>  drivers/char/hw_random/mtk-sec-rng.c          | 97 +++++++++++++++++++
>  include/linux/soc/mediatek/mtk_sip_svc.h      | 33 +++++++
>  5 files changed, 157 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/rng/mtk-sec-rng.txt
>  create mode 100644 drivers/char/hw_random/mtk-sec-rng.c
>  create mode 100644 include/linux/soc/mediatek/mtk_sip_svc.h
>