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SubjectRe: [PATCHv9] drivers: optee: allow op-tee to access devices on the i2c bus
On 21/08/20, Jens Wiklander wrote:
> On Fri, Aug 14, 2020 at 01:12:21PM +0200, Jorge Ramirez-Ortiz wrote:
> > Some secure elements like NXP's SE050 sit on I2C buses. For OP-TEE to
> > control this type of cryptographic devices it needs coordinated access
> > to the bus, so collisions and RUNTIME_PM dont get in the way.
> >
> > This trampoline driver allow OP-TEE to access them.
> >
> > Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
> > ---
> > v9: params return value must be written before optee_msg_to_param is called
> > v8: review fixes:
> > fix types and add TEEC_ERROR_NOT_SUPPORTED to GP errors
> > v7: add support for ten bit i2c slave addressing
> > v6: compile out if CONFIG_I2C not enabled
> > v5: alphabetic order of includes
> > v4: remove unnecessary extra line in optee_msg.h
> > v3: use from/to msg param to support all types of memory
> > modify OPTEE_MSG_RPC_CMD_I2C_TRANSFER message id
> >
> > drivers/tee/optee/optee_msg.h | 21 +++++++
> > drivers/tee/optee/optee_private.h | 1 +
> > drivers/tee/optee/rpc.c | 95 +++++++++++++++++++++++++++++++
> > 3 files changed, 117 insertions(+)
>
> Looks good. Did you test this with the recently merged
> https://github.com/OP-TEE/optee_os/pull/4033 ?
>

yes, I did retest and it is good.

thanks!

> Cheers,
> Jens

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