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From: Geoff Lansberry <geoff@kuvee.com>
To: Rob Herring <robh@kernel.org>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	Lauro Ramos Venancio <lauro.venancio@openbossa.org>,
	Aloisio Almeida Jr <aloisio.almeida@openbossa.org>,
	Samuel Ortiz <sameo@linux.intel.com>,
	mark.rutland@arm.com, netdev@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Mark Greer <mgreer@animalcreek.com>,
	Justin Bronder <justin@kuvee.com>
Subject: Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage
Date: Tue, 20 Dec 2016 11:13:23 -0500	[thread overview]
Message-ID: <CAO7Z3WLC7J+JzmtArOc-ZUNoLGeMX6s=1XQbzwB1zx1U3yTX2Q@mail.gmail.com> (raw)
In-Reply-To: <20161219223504.ttwayzpfvdumgouu@rob-hp-laptop>

On Mon, Dec 19, 2016 at 5:35 PM, Rob Herring <robh@kernel.org> wrote:
> 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";
>>       };

Rob - using the regulator binding is new to me, but I've given it a
shot and just sent you another set of patches for your inspection.
Please let me know if this is what you had in mind.

Geoff

  reply	other threads:[~2016-12-20 16:14 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-15 22:30 [PATCH 1/3] NFC: trf7970a: add device tree option for 27MHz clock Geoff Lansberry
2016-12-15 22:30 ` [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage Geoff Lansberry
2016-12-16  1:13   ` Mark Greer
2016-12-19 22:35   ` Rob Herring
2016-12-20 16:13     ` Geoff Lansberry [this message]
2016-12-21  2:07       ` Mark Greer
2016-12-15 22:30 ` [PATCH 3/3] nfc: trf7970a: Prevent repeated polling from crashing the kernel Geoff Lansberry
2016-12-16  1:18   ` Mark Greer
2016-12-16  1:06 ` [PATCH 1/3] NFC: trf7970a: add device tree option for 27MHz clock Mark Greer
2016-12-19 22:31 ` Rob Herring
2016-12-19 23:23   ` Geoff Lansberry
2016-12-22 18:48     ` Rob Herring
2016-12-20 16:10 Geoff Lansberry
2016-12-20 16:10 ` [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage Geoff Lansberry
2016-12-20 16:16 [PATCH 1/3] NFC: trf7970a: add device tree option for 27MHz clock Geoff Lansberry
2016-12-20 16:16 ` [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage Geoff Lansberry
2016-12-21  2:23   ` Mark Greer
2016-12-21 11:47     ` Geoff Lansberry
2016-12-21 16:13       ` Mark Greer

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