From: Patrick Delaunay <patrick.delaunay@foss.st.com>
Date: Thu, 15 Dec 2022 08:54:52 +0000 (+0100)
Subject: optee: bind the TA drivers on OP-TEE node
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=59dacc319030748817b28cce9c773e15f2b73dc8;p=u-boot.git

optee: bind the TA drivers on OP-TEE node

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>
---

diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
index b21031d7d8..a813a84a4f 100644
--- a/drivers/tee/optee/core.c
+++ b/drivers/tee/optee/core.c
@@ -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);
 	}