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aecff98c3e
[ Upstream commit 828db68f4ff1ab6982a36a56522b585160dc8c8e ]
NXP and AzureWave don't recommend using SDIO bus mode 3.3V@50MHz due
to noise affecting the wireless throughput. Colibri iMX6ULL uses only
3.3V signaling for Wi-Fi module AW-CM276NF.
Limit the SDIO Clock on Colibri iMX6ULL to 25MHz.
Fixes: c2e4987e0e ("ARM: dts: imx6ull: add Toradex Colibri iMX6ULL support")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
54 lines
1.1 KiB
Plaintext
54 lines
1.1 KiB
Plaintext
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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/*
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* Copyright 2018 Toradex AG
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*/
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#include "imx6ull-colibri.dtsi"
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/ {
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memory@80000000 {
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device_type = "memory";
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reg = <0x80000000 0x20000000>;
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};
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wifi_pwrseq: sdio-pwrseq {
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compatible = "mmc-pwrseq-simple";
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_snvs_wifi_pdn>;
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reset-gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
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};
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};
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&cpu0 {
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clock-frequency = <792000000>;
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};
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&iomuxc {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_gpio1 &pinctrl_gpio2 &pinctrl_gpio3
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&pinctrl_gpio4 &pinctrl_gpio5>;
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};
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&iomuxc_snvs {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_snvs_gpio1 &pinctrl_snvs_gpio2>;
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};
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&usdhc2 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_usdhc2>;
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assigned-clocks = <&clks IMX6UL_CLK_USDHC2_SEL>, <&clks IMX6UL_CLK_USDHC2>;
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assigned-clock-parents = <&clks IMX6UL_CLK_PLL2_PFD2>;
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assigned-clock-rates = <0>, <198000000>;
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cap-power-off-card;
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keep-power-in-suspend;
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max-frequency = <25000000>;
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mmc-pwrseq = <&wifi_pwrseq>;
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no-1-8-v;
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non-removable;
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vmmc-supply = <®_module_3v3>;
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wakeup-source;
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status = "okay";
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};
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