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firmware: PSCI: Fix PSCI support for OF live trees

When CONFIG_OF_LIVE is enabled, dev_of_offset() cannot be used and
if used returns an invalid offset. This causes the call to
fdt_stringlist_get() in the psci_probe() to fail to read the 'method'
property from the PSCI node for the device and hence prevents PSCI
from working. Fix this by using the ofnode_read_string() API instead
of the fdt_stringlist_get() because this will handle reading the
property both when CONFIG_OF_LIVE is enabled or disabled.

Due to the above problem and since commit 81ea00838c68 ("efi_loader:
PSCI reset and shutdown") was added, the EFI system reset has been
broken for Tegra210 and Tegra196 platforms. This also fixes the EFI
system reset for these Tegra platforms.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Jon Hunter 3 lat temu
rodzic
commit
fb264efbd2
1 zmienionych plików z 1 dodań i 3 usunięć
  1. 1 3
      drivers/firmware/psci.c

+ 1 - 3
drivers/firmware/psci.c

@@ -67,11 +67,9 @@ static int psci_bind(struct udevice *dev)
 
 static int psci_probe(struct udevice *dev)
 {
-	DECLARE_GLOBAL_DATA_PTR;
 	const char *method;
 
-	method = fdt_stringlist_get(gd->fdt_blob, dev_of_offset(dev), "method",
-				    0, NULL);
+	method = ofnode_read_string(dev_ofnode(dev), "method");
 	if (!method) {
 		pr_warn("missing \"method\" property\n");
 		return -ENXIO;