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SubjectRe: [PATCH] PCI: apple: Enable clock gating
On Wed, 17 Nov 2021 14:19:16 +0000,
Hector Martin <marcan@marcan.st> wrote:
>
> These pokes are not required to make the PCIe port work, but it sounds
> like this should save some power at least.
>
> Signed-off-by: Hector Martin <marcan@marcan.st>
> ---
> 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 420c291a5c68..03bfe977c579 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;
> --
> 2.33.0
>
>

Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>

M.

--
Without deviation from the norm, progress is not possible.

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