From d8710c3fb912574709166bba24f4c64162ab832c Mon Sep 17 00:00:00 2001 From: Christopher Spinrath Date: Tue, 30 May 2017 22:16:01 +0200 Subject: [PATCH] ARM: dts: imx6q-cm-fx6: add sdio wifi/bt nodes The cm-fx6 module has an on-board AW-NH387 WiFi/BT module which is based on Marvell's SD8787 chip and is connected to the usdhc1 controller. Unfortunately, the chip gets unresponsive if the Bluetooth AMP (Alternate Mac/Phy) function gets probed but the loaded firmware doesn't support it. For instance, this is the case for the most recent firmware in linux-firmware (Version 14.66.35.p52). Thus, just add the required nodes but leave the usdhc1 node disabled explicitly. Users who disabled the Bluetooth (AMP) support of their OS can then conveniently enable WiFi (or even plain Bluetooth) support with a simple device tree overlay/bootloader configuration. Signed-off-by: Christopher Spinrath Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-cm-fx6.dts | 41 ++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/arch/arm/boot/dts/imx6q-cm-fx6.dts b/arch/arm/boot/dts/imx6q-cm-fx6.dts index a8af3822d9df..fe6ab0aa34f9 100644 --- a/arch/arm/boot/dts/imx6q-cm-fx6.dts +++ b/arch/arm/boot/dts/imx6q-cm-fx6.dts @@ -64,6 +64,14 @@ }; }; + awnh387_pwrseq: pwrseq { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pwrseq>; + compatible = "mmc-pwrseq-sd8787"; + powerdown-gpios = <&gpio7 12 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio6 16 GPIO_ACTIVE_HIGH>; + }; + reg_pcie_power_on_gpio: regulator-pcie-power-on-gpio { compatible = "regulator-fixed"; regulator-name = "regulator-pcie-power-on-gpio"; @@ -304,6 +312,13 @@ >; }; + pinctrl_pwrseq: pwrseqgrp { + fsl,pins = < + MX6QDL_PAD_GPIO_17__GPIO7_IO12 0x1b0b0 + MX6QDL_PAD_NANDF_CS3__GPIO6_IO16 0x1b0b0 + >; + }; + pinctrl_spdif: spdifgrp { fsl,pins = < MX6QDL_PAD_GPIO_16__SPDIF_IN 0x1b0b0 @@ -330,6 +345,17 @@ MX6QDL_PAD_EIM_D22__GPIO3_IO22 0x130b0 >; }; + + pinctrl_usdhc1: usdhc1grp { + fsl,pins = < + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x17071 + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x10071 + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17071 + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17071 + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17071 + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17071 + >; + }; }; &pcie { @@ -382,3 +408,18 @@ dr_mode = "otg"; status = "okay"; }; + +&usdhc1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usdhc1>; + mmc-pwrseq = <&awnh387_pwrseq>; + non-removable; + /* + * If the OS probes the Bluetooth AMP function advertised on this bus + * but the firmware in place does not support it, the WiFi/BT module + * gets unresponsive. + * Users who configured their OS properly can enable this node to gain + * WiFi and/or plain Bluetooth support. + */ + status = "disabled"; +}; -- 2.20.1