Hi,
On 9/6/22 11:37, Ilias Apalodimas wrote:
Late versions of OP-TEE support a pseudo bus. TAs that behave as hardware blocks (e.g TPM, RNG etc) present themselves on a bus which we can scan. Unfortunately U-Boot doesn't support that yet. It's worth noting that we already have a workaround for RNG. The details are in commit 70812bb83da6 ("tee: optee: bind rng optee driver")
So let's add a list of devices based on U-Boot Kconfig options that we will scan until we properly implement the tee-bus functionality.
While at it change the behaviour of the tee core itself wrt to device binding. If some device binding fails, print a warning instead of disabling OP-TEE.
Signed-off-by: Ilias Apalodimas ilias.apalodimas@linaro.org Reviewed-by: Jens Wiklander jens.wiklander@linaro.org Reviewed-by: Etienne Carriere etienne.carriere@linaro.org
Changes since v3:
- Use NULL instead of a child ptr on device_bind_driver(), since it's not
really needed
- Changed the style of the optee_bus_probe[] definition to {.drv_name = xxx, .dev_name = yyy }
Changes since v2:
- Fixed typo on driver name ftpm-tee -> ftpm_tee
Changes since v1:
- remove a macro and use ARRAY_SIZE directly drivers/tee/optee/core.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-)
Reviewed-by: Patrick Delaunay patrick.delaunay@foss.st.com
Thanks Patrick