Hi Baruch,
> From: Thomas Schreiber <tschreibe@xxxxxxxxx>
>
> There is currently no DT binding for GPIO rfkill signals. To make
> mini-PCIe attached WiFi devices work, use gpio-hog to hold the
> wlan_disable signal de-asserted.
>
> Signed-off-by: Thomas Schreiber <tschreibe@xxxxxxxxx>
> [baruch: add pinctrl node; rename tag]
> Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
Applied on mvebu/dt64
Thanks,
Gregory
> ---
> .../boot/dts/marvell/armada-8040-clearfog-gt-8k.dts | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/marvell/armada-8040-clearfog-gt-8k.dts b/arch/arm64/boot/dts/marvell/armada-8040-clearfog-gt-8k.dts
> index 2468762283a5..9143aa13ceb1 100644
> --- a/arch/arm64/boot/dts/marvell/armada-8040-clearfog-gt-8k.dts
> +++ b/arch/arm64/boot/dts/marvell/armada-8040-clearfog-gt-8k.dts
> @@ -226,6 +226,11 @@
> marvell,function = "gpio";
> };
>
> + cp0_wlan_disable_pins: wlan-disable-pins {
> + marvell,pins = "mpp51";
> + marvell,function = "gpio";
> + };
> +
> cp0_sdhci_pins: sdhci-pins {
> marvell,pins = "mpp55", "mpp56", "mpp57", "mpp58", "mpp59",
> "mpp60", "mpp61";
> @@ -235,7 +240,7 @@
>
> &cp0_pcie0 {
> pinctrl-names = "default";
> - pinctrl-0 = <&cp0_pci0_reset_pins>;
> + pinctrl-0 = <&cp0_pci0_reset_pins &cp0_wlan_disable_pins>;
> reset-gpios = <&cp0_gpio2 0 GPIO_ACTIVE_LOW>;
> status = "okay";
> };
> @@ -253,6 +258,12 @@
> output-low;
> };
>
> + wlan_disable {
> + gpio-hog;
> + gpios = <19 GPIO_ACTIVE_LOW>;
> + output-low;
> + };
> +
> lte_disable {
> gpio-hog;
> gpios = <21 GPIO_ACTIVE_LOW>;
> --
> 2.20.1
>
--
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com
