From patchwork Thu Jun 18 11:54:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Hunter X-Patchwork-Id: 242592 List-Id: U-Boot discussion From: jonathanh at nvidia.com (Jon Hunter) Date: Thu, 18 Jun 2020 12:54:38 +0100 Subject: [PATCH 1/2] firmware: PSCI: Fix PSCI support for OF live trees Message-ID: <20200618115439.25100-1-jonathanh@nvidia.com> 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 Tested-by: Peter Robinson --- drivers/firmware/psci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index e0d66d74f54d..23cf807591c4 100644 --- a/drivers/firmware/psci.c +++ b/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;