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

From Rob Herring <robh@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage
Date 2016-12-19 23:40 +0100
Message-ID <sQeL8-5pk-9@gated-at.bofh.it> (permalink)
References <sOMQW-38F-23@gated-at.bofh.it> <sOMQW-38F-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Dec 15, 2016 at 05:30:43PM -0500, Geoff Lansberry wrote:
> From: Geoff Lansberry <geoff@kuvee.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";
>  	};

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Thread

[PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage Geoff Lansberry <geoff@kuvee.com> - 2016-12-15 23:40 +0100
  Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO  voltage Mark Greer <mgreer@animalcreek.com> - 2016-12-16 02:20 +0100
  Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO  voltage Rob Herring <robh@kernel.org> - 2016-12-19 23:40 +0100
    Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage Geoff Lansberry <geoff@kuvee.com> - 2016-12-20 17:20 +0100
      Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO  voltage Mark Greer <mgreer@animalcreek.com> - 2016-12-21 03:10 +0100

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