[PATCH 10/12] ARM: dts: imx7d: cl-som-imx7: add WiLink8 WLAN support

[André Draszik]

add / enable TI's WiLink8 WLAN module on SDIO2.

Notes:
* power is always enabled (because of bluetooth)
* the downstream delay of 70ms after power-on
  doesn't seem to reliably work, hence it was
  bumped to 700ms

Signed-off-by: André Draszik <g...@andred.net>
Cc: Ilya Ledvich <i...@compulab.co.il>
Cc: Igor Grinberg <grinb...@compulab.co.il>
Cc: Rob Herring <robh...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Shawn Guo <shawn...@kernel.org>
Cc: Sascha Hauer <s.ha...@pengutronix.de>
Cc: Pengutronix Kernel Team <ker...@pengutronix.de>
Cc: Fabio Estevam <feste...@gmail.com>
Cc: NXP Linux Team <linux-...@nxp.com>
Cc: devicet...@vger.kernel.org
Cc: linux-arm-ker...@lists.infradead.org
---
 arch/arm/boot/dts/imx7d-cl-som-imx7.dts | 60 +++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/arch/arm/boot/dts/imx7d-cl-som-imx7.dts 
b/arch/arm/boot/dts/imx7d-cl-som-imx7.dts
index a16cbb070a12..4cb36decef3d 100644
--- a/arch/arm/boot/dts/imx7d-cl-som-imx7.dts
+++ b/arch/arm/boot/dts/imx7d-cl-som-imx7.dts
@@ -28,6 +28,24 @@
                compatible = "smsc,usb3503";
                reset-gpios = <&pca9555 6 GPIO_ACTIVE_LOW>;
        };
+
+       pwrseq_ti_wifi: ti-wifi-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               reset-gpios = <&pca9555 0 GPIO_ACTIVE_LOW>;
+               post-power-on-delay-ms = <700>;
+               /* 10μs during shutdown, but 60μs between two enables */
+               power-off-delay-us = "60";
+       };
+
+       reg_ti_wifi: regulator-ti-wifi {
+               compatible = "regulator-fixed";
+               regulator-name = "wilink-regulator";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               gpio = <&pca9555 9 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+               regulator-always-on;
+       };
 };
 
 &cpu0 {
@@ -232,6 +250,31 @@
        status = "okay";
 };
 
+&usdhc2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_usdhc2>;
+       bus-width = <4>;
+       no-1-8-v;
+       keep-power-in-suspend;
+       wakeup-source;
+       vmmc-supply = <&reg_ti_wifi>;
+       mmc-pwrseq = <&pwrseq_ti_wifi>;
+       non-removable;
+       cap-power-off-card;
+       status = "okay";
+
+       #address-cells = <1>;
+       #size-cells = <0>;
+       wlcore: wlcore@2 {
+               compatible = "ti,wl1835";
+               reg = <2>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_usdhc2_wlcore>;
+               interrupt-parent = <&gpio1>;
+               interrupts = <15 IRQ_TYPE_LEVEL_HIGH>;
+       };
+};
+
 &usdhc3 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_usdhc3>;
@@ -308,6 +351,23 @@
                >;
        };
 
+       pinctrl_usdhc2: usdhc2grp {
+               fsl,pins = <
+                       MX7D_PAD_SD2_CMD__SD2_CMD               0x59
+                       MX7D_PAD_SD2_CLK__SD2_CLK               0x19
+                       MX7D_PAD_SD2_DATA0__SD2_DATA0           0x59
+                       MX7D_PAD_SD2_DATA1__SD2_DATA1           0x59
+                       MX7D_PAD_SD2_DATA2__SD2_DATA2           0x59
+                       MX7D_PAD_SD2_DATA3__SD2_DATA3           0x59
+               >;
+       };
+
+       pinctrl_usdhc2_wlcore: usdhc2wlcoregrp {
+               fsl,pins = <
+                       MX7D_PAD_GPIO1_IO15__GPIO1_IO15         0x34
+               >;
+       };
+
        pinctrl_usdhc3: usdhc3grp {
                fsl,pins = <
                        MX7D_PAD_SD3_CMD__SD3_CMD               0x59
-- 
2.23.0.rc1