netdev - Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage

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

Message-ID: <20161219223504.ttwayzpfvdumgouu@rob-hp-laptop>
Date:   Mon, 19 Dec 2016 16:35:04 -0600
From:   Rob Herring <robh@...nel.org>
To:     Geoff Lansberry <geoff@...ee.com>
Cc:     linux-wireless@...r.kernel.org, lauro.venancio@...nbossa.org,
        aloisio.almeida@...nbossa.org, sameo@...ux.intel.com,
        mark.rutland@....com, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        mgreer@...malcreek.com, justin@...ee.com
Subject: Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO
 voltage

On Thu, Dec 15, 2016 at 05:30:43PM -0500, Geoff Lansberry wrote:
> From: Geoff Lansberry <geoff@...ee.com>
> 
> ---
>  Documentation/devicetree/bindings/net/nfc/trf7970a.txt |  2 ++
>  drivers/nfc/trf7970a.c                                 | 13 ++++++++++++-
>  2 files changed, 14 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
> index 9dda879..208f045 100644
> --- a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
> +++ b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
> @@ -21,6 +21,7 @@ Optional SoC Specific Properties:
>  - t5t-rmb-extra-byte-quirk: Specify that the trf7970a has the erratum
>    where an extra byte is returned by Read Multiple Block commands issued
>    to Type 5 tags.
> +- vdd_io_1v8: Set to specify that the trf7970a io voltage should be set to 1.8V

Use the regulator binding and provide a fixed 1.8V supply.

>  - crystal_27mhz: Set to specify that the input frequency to the trf7970a is 27.12MHz
>  
>  
> @@ -45,6 +46,7 @@ Example (for ARM-based BeagleBone with TRF7970A on SPI1):
>  		irq-status-read-quirk;
>  		en2-rf-quirk;
>  		t5t-rmb-extra-byte-quirk;
> +		vdd_io_1v8;
>  		crystal_27mhz;
>  		status = "okay";
>  	};