Re: [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage
From: Rob Herring <robh@kernel.org>
Date: 2016-12-19 22:35:09
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linux-devicetree, linux-wireless, lkml
On Thu, Dec 15, 2016 at 05:30:43PM -0500, Geoff Lansberry wrote:
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From: Geoff Lansberry <redacted> --- 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.
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- 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"; };