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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 14:18:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 14:18:40 -0800
commit3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9 (patch)
tree53958546913e5c60c590109c141bf182f1795e86 /Documentation/devicetree/bindings/iio/adc/envelope-detector.txt
parent2911ed9f47b47cb5ab87d03314b3b9fe008e607f (diff)
parent4996b4610767064807d022dd731584f7ff78c309 (diff)
Merge tag 'staging-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / IIO driver updates from Greg KH: "Here is the big staging and IIO driver pull request for 5.11-rc1 Lots of different things in here: - loads of driver updates - so many coding style cleanups - new IIO drivers - Android ION code is finally removed from the tree - wimax drivers are moved to staging on their way out of the kernel Nothing really exciting, just the constant grind of kernel development :) All have been in linux-next for a while with no reported issues" * tag 'staging-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (341 commits) staging: olpc_dcon: Do not call platform_device_unregister() in dcon_probe() staging: most: Fix spelling mistake "tranceiver" -> "transceiver" staging: qlge: remove duplicate word in comment staging: comedi: mf6x4: Fix AI end-of-conversion detection staging: greybus: Add TODO item about modernizing the pwm code pinctrl: ralink: add a pinctrl driver for the rt2880 family dt-bindings: pinctrl: rt2880: add binding document staging: rtl8723bs: remove ELEMENT_ID enum staging: rtl8723bs: remove unused macros staging: rtl8723bs: replace EID_EXTCapability staging: rtl8723bs: replace EID_BSSIntolerantChlReport staging: rtl8723bs: replace EID_BSSCoexistence staging: rtl8723bs: replace _MME_IE_ staging: rtl8723bs: replace _WAPI_IE_ staging: rtl8723bs: replace _EXT_SUPPORTEDRATES_IE_ staging: rtl8723bs: replace _ERPINFO_IE_ staging: rtl8723bs: replace _CHLGETXT_IE_ staging: rtl8723bs: replace _COUNTRY_IE_ staging: rtl8723bs: replace _IBSS_PARA_IE_ staging: rtl8723bs: replace _TIM_IE_ ...
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-Bindings for ADC envelope detector using a DAC and a comparator
-
-The DAC is used to find the peak level of an alternating voltage input
-signal by a binary search using the output of a comparator wired to
-an interrupt pin. Like so:
- _
- | \
- input +------>-------|+ \
- | \
- .-------. | }---.
- | | | / |
- | dac|-->--|- / |
- | | |_/ |
- | | |
- | | |
- | irq|------<-------'
- | |
- '-------'
-
-Required properties:
-- compatible: Should be "axentia,tse850-envelope-detector"
-- io-channels: Channel node of the dac to be used for comparator input.
-- io-channel-names: Should be "dac".
-- interrupt specification for one client interrupt,
- see ../../interrupt-controller/interrupts.txt for details.
-- interrupt-names: Should be "comp".
-
-Example:
-
- &i2c {
- dpot: mcp4651-104@28 {
- compatible = "microchip,mcp4651-104";
- reg = <0x28>;
- #io-channel-cells = <1>;
- };
- };
-
- dac: dac {
- compatible = "dpot-dac";
- vref-supply = <&reg_3v3>;
- io-channels = <&dpot 0>;
- io-channel-names = "dpot";
- #io-channel-cells = <1>;
- };
-
- envelope-detector {
- compatible = "axentia,tse850-envelope-detector";
- io-channels = <&dac 0>;
- io-channel-names = "dac";
-
- interrupt-parent = <&gpio>;
- interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
- interrupt-names = "comp";
- };