[PATCH 2/6] PCI/pwrctrl: Enable pwrctrl for devices powered by a power domain

[Mikko Perttunen]

Update pci_pwrctrl_is_required to return true for devices that require a
power domain specified by the power-domains property, such as the
integrated GPU on Tegra264.

Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx>
---
 drivers/pci/pwrctrl/core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/pwrctrl/core.c b/drivers/pci/pwrctrl/core.c
index 0e2387cf4657..437507699beb 100644
--- a/drivers/pci/pwrctrl/core.c
+++ b/drivers/pci/pwrctrl/core.c
@@ -146,8 +146,8 @@ EXPORT_SYMBOL_GPL(devm_pci_pwrctrl_device_set_ready);
  * 1. Presence of compatible property with "pci" prefix to match against the
  *    pwrctrl driver (AND)
  * 2. At least one of the power supplies defined in the devicetree node of the
- *    device (OR) in the remote endpoint parent node to indicate pwrctrl
- *    requirement.
+ *    device (OR) in the remote endpoint parent node (OR) a power-domains
+ *    property in the device node to indicate pwrctrl requirement.
  */
 static bool pci_pwrctrl_is_required(struct device_node *np)
 {
@@ -165,6 +165,9 @@ static bool pci_pwrctrl_is_required(struct device_node *np)
 	if (of_pci_supply_present(np))
 		return true;
 
+	if (of_property_present(np, "power-domains"))
+		return true;
+
 	if (of_graph_is_present(np)) {
 		for_each_endpoint_of_node(np, endpoint) {
 			struct device_node *remote __free(device_node) =

-- 
2.55.0