From 754bb7ad29566b2789cafb6b378b788266d1f131 Mon Sep 17 00:00:00 2001 From: Hector Martin Date: Wed, 17 Nov 2021 23:19:16 +0900 Subject: [PATCH] PCI: apple: Enable clock gating These pokes are not required to make the PCIe port work, but it sounds like this should save some power at least. Link: https://lore.kernel.org/r/20211117141916.197192-1-marcan@marcan.st Tested-by: Marc Zyngier Signed-off-by: Hector Martin Signed-off-by: Lorenzo Pieralisi Acked-by: Marc Zyngier --- drivers/pci/controller/pcie-apple.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c index 1bf4d75b61be7..fa5e9c31d80b9 100644 --- a/drivers/pci/controller/pcie-apple.c +++ b/drivers/pci/controller/pcie-apple.c @@ -553,6 +553,9 @@ static int apple_pcie_setup_port(struct apple_pcie *pcie, return ret; } + rmw_clear(PORT_REFCLK_CGDIS, port->base + PORT_REFCLK); + rmw_clear(PORT_APPCLK_CGDIS, port->base + PORT_APPCLK); + ret = apple_pcie_port_setup_irq(port); if (ret) return ret; -- 2.30.2