diff options
| author | Angus Ainslie <angus@akkea.ca> | 2021-10-05 15:49:00 +0200 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2021-10-15 09:44:50 +0800 |
| commit | 2344af0d5b58972c8ee3323923ed4167a9922b04 (patch) | |
| tree | d7c8f5abfd2a3938f9e778b941a1cdd87b1363dc /arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | |
| parent | c3817595d6d026711dcda64908b1b9830e55633b (diff) | |
arm64: dts: imx8mq-librem5: add power sequencing for M.2 cards
Some wifi cards need reset asserted until after the power supplies
have been enabled.
So wire up the W_DISABLE signal for the SDIO port (WIFI_REG_ON net) and
the BT_REG_ON net to use it for power sequencing.
Signed-off-by: Angus Ainslie <angus@akkea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi index 7a09312f31c4..396eb4434229 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi @@ -198,6 +198,14 @@ }; }; + usdhc2_pwrseq: pwrseq { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_bt>, <&pinctrl_wifi_disable>; + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpio3 25 GPIO_ACTIVE_HIGH>, + <&gpio4 29 GPIO_ACTIVE_HIGH>; + }; + bm818_codec: sound-wwan-codec { compatible = "broadmobi,bm818", "option,gtm601"; #sound-dai-cells = <0>; @@ -312,6 +320,13 @@ >; }; + pinctrl_bt: btgrp { + fsl,pins = < + /* BT_REG_ON */ + MX8MQ_IOMUXC_SAI5_MCLK_GPIO3_IO25 0x83 + >; + }; + pinctrl_charger_in: chargeringrp { fsl,pins = < /* CHRG_INT */ @@ -643,6 +658,13 @@ >; }; + pinctrl_wifi_disable: wifidisablegrp { + fsl,pins = < + /* WIFI_REG_ON */ + MX8MQ_IOMUXC_SAI3_RXC_GPIO4_IO29 0x83 + >; + }; + pinctrl_wifi_pwr: wifipwrgrp { fsl,pins = < /* WIFI3V3_EN */ @@ -1212,6 +1234,7 @@ pinctrl-2 = <&pinctrl_usdhc2_200mhz>; bus-width = <4>; vmmc-supply = <®_wifi_3v3>; + mmc-pwrseq = <&usdhc2_pwrseq>; post-power-on-delay-ms = <1000>; cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>; disable-wp; |