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optee: bind the TA drivers on OP-TEE node

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In U-Boot driver model the devices can be referenced by
phandle in the U-Boot configuration nodes.

Without a valid node provided during the bind, the driver
associated to OP-TEE TA can't be referenced.

For example to force the sequence number with alias
(.flags = DM_UC_FLAG_SEQ_ALIAS)

 	aliases {
		rng0 = &optee;
 	};

or other configuration:

board-sysinfo {
   compatible = "vendor,sysinfo-board";
   ramdom = <&optee>;
}

With this patch all drivers bound from OP-TEE service
discovery are now associated are associated to OP-TEE
node, allowing to identify by phandle the driver
provided by the TA for one UCLASS without modifying
device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay 2022-12-15 09:54:52 +01:00 committed by Tom Rini
parent 1c44d10879
commit 59dacc3190
1 changed files with 4 additions and 2 deletions
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6
drivers/tee/optee/core.c
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@ -92,7 +92,8 @@ static int bind_service_list(struct udevice *dev, struct tee_shm *service_list,
if (!service)
continue;
ret = device_bind_driver(dev, service->driver_name, service->driver_name, NULL);
ret = device_bind_driver_to_node(dev, service->driver_name, service->driver_name,
dev_ofnode(dev), NULL);
if (ret) {
dev_warn(dev, "%s was not bound: %d, ignored\n", service->driver_name, ret);
continue;
@ -846,7 +847,8 @@ static int optee_probe(struct udevice *dev)
* Discovery of TAs on the TEE bus is not supported in U-Boot:
* only bind the drivers associated to the supported OP-TEE TA
*/
ret = device_bind_driver(dev, "optee-rng", "optee-rng", NULL);
ret = device_bind_driver_to_node(dev, "optee-rng", "optee-rng",
dev_ofnode(dev), NULL);
if (ret)
dev_warn(dev, "ftpm_tee failed to bind: %d\n", ret);
}