[PATCH v3] ARM: dts: imx7d-remarkable2: Add WiFi support
From: Alistair Francis <hidden>
Date: 2021-07-06 12:05:55
Add support for the bcm4329-fmac WiFi in the reMarkable 2, connected via SDHC. Signed-off-by: Alistair Francis <redacted> --- V3: - Remove the duplicate pinctrl-2 arch/arm/boot/dts/imx7d-remarkable2.dts | 91 +++++++++++++++++++++++++ 1 file changed, 91 insertions(+)
diff --git a/arch/arm/boot/dts/imx7d-remarkable2.dts b/arch/arm/boot/dts/imx7d-remarkable2.dts
index 8cbae656395c..89cbf13097a4 100644
--- a/arch/arm/boot/dts/imx7d-remarkable2.dts
+++ b/arch/arm/boot/dts/imx7d-remarkable2.dts@@ -21,6 +21,27 @@ memory@80000000 { device_type = "memory"; reg = <0x80000000 0x40000000>; }; + + reg_brcm: regulator-brcm { + compatible = "regulator-fixed"; + regulator-name = "brcm_reg"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_brcm_reg>; + gpio = <&gpio6 13 GPIO_ACTIVE_HIGH>; + enable-active-high; + startup-delay-us = <150>; + }; + + wifi_pwrseq: wifi_pwrseq { + compatible = "mmc-pwrseq-simple"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_wifi>; + reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>; + clocks = <&clks IMX7D_CLKO2_ROOT_DIV>; + clock-names = "ext_clock"; + }; }; &clks {
@@ -56,6 +77,27 @@ &usbotg2 { status = "okay"; }; +&usdhc2 { + #address-cells = <1>; + #size-cells = <0>; + pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep"; + pinctrl-0 = <&pinctrl_usdhc2>; + pinctrl-1 = <&pinctrl_usdhc2_100mhz>; + pinctrl-2 = <&pinctrl_usdhc2_200mhz>; + mmc-pwrseq = <&wifi_pwrseq>; + vmmc-supply = <®_brcm>; + bus-width = <4>; + non-removable; + keep-power-in-suspend; + cap-power-off-card; + status = "okay"; + + brcmf: bcrmf@1 { + reg = <1>; + compatible = "brcm,bcm4329-fmac"; + }; +}; + &usdhc3 { pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep"; pinctrl-0 = <&pinctrl_usdhc3>;
@@ -76,6 +118,13 @@ &wdog1 { }; &iomuxc { + pinctrl_brcm_reg: brcmreggrp { + fsl,pins = < + /* WIFI_PWR_EN */ + MX7D_PAD_SAI1_TX_BCLK__GPIO6_IO13 0x14 + >; + }; + pinctrl_uart1: uart1grp { fsl,pins = < MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX 0x79
@@ -90,6 +139,39 @@ MX7D_PAD_EPDC_DATA08__UART6_DCE_RX 0x79 >; }; + 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_100mhz: usdhc2grp_100mhz { + fsl,pins = < + MX7D_PAD_SD2_CMD__SD2_CMD 0x5a + MX7D_PAD_SD2_CLK__SD2_CLK 0x1a + MX7D_PAD_SD2_DATA0__SD2_DATA0 0x5a + MX7D_PAD_SD2_DATA1__SD2_DATA1 0x5a + MX7D_PAD_SD2_DATA2__SD2_DATA2 0x5a + MX7D_PAD_SD2_DATA3__SD2_DATA3 0x5a + >; + }; + + pinctrl_usdhc2_200mhz: usdhc2grp_200mhz { + fsl,pins = < + MX7D_PAD_SD2_CMD__SD2_CMD 0x5b + MX7D_PAD_SD2_CLK__SD2_CLK 0x1b + MX7D_PAD_SD2_DATA0__SD2_DATA0 0x5b + MX7D_PAD_SD2_DATA1__SD2_DATA1 0x5b + MX7D_PAD_SD2_DATA2__SD2_DATA2 0x5b + MX7D_PAD_SD2_DATA3__SD2_DATA3 0x5b + >; + }; + pinctrl_usdhc3: usdhc3grp { fsl,pins = < MX7D_PAD_SD3_CMD__SD3_CMD 0x59
@@ -143,4 +225,13 @@ pinctrl_wdog: wdoggrp { MX7D_PAD_ENET1_COL__WDOG1_WDOG_ANY 0x74 >; }; + + pinctrl_wifi: wifigrp { + fsl,pins = < + /* WiFi Reg On */ + MX7D_PAD_SD2_CD_B__GPIO5_IO9 0x00000014 + /* WiFi Sleep 32k */ + MX7D_PAD_SD1_WP__CCM_CLKO2 0x00000014 + >; + }; };
--
2.31.1
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