linux-kernel - WiFi card through sdio interface in kernel 3.10.17

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <CAP3RZojgrZKmkhtJDcCcHBxDw+1MECGN5nKd7q7sdofko8Tdug@mail.gmail.com>
Date:	Tue, 1 Jul 2014 18:57:54 +0530
From:	jags gediya <jags.gediya@...il.com>
To:	linux-mmc@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: WiFi card through sdio interface in kernel 3.10.17

Hi all,

I am using linux kernel 3.10.17. I  have interfaced wifi module from
TI to sdio interface.
I am getting following error in kernel logs

mmc0: Switching to 3.3V signaling voltage failed

i have done following configuration in device tree.

reg_3p3v: 3p3v {
            compatible = "regulator-fixed";
            regulator-name = "3P3V";
            regulator-min-microvolt = <3300000>;
            regulator-max-microvolt = <3300000>;
            regulator-always-on;
            };

        wilink_wl_en: tiwi_wlan {
            compatible = "regulator-fixed";
            regulator-name = "wilink_wl_en";
            regulator-min-microvolt = <1800000>;
            regulator-max-microvolt = <1800000>;
            gpio = <&gpio1 12 0>;
            startup-delay-us = <70000>;
            enable-active-high;
        };

and for usdhc1,


&usdhc1 {
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_usdhc1_1>;
    bus-width = <4>;
    non-removable;
    vmmc-supply = <&reg_3p3v>;
    vqmmc-supply = <&wilink_wl_en>;
    ocr-limit = <0x80>;
    power-off-card;
    keep-power-in-suspend;
    status = "okay";
};

What can be the reason of error
mmc0: Switching to 3.3V signaling voltage failed?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/