From 8502f9f6d7781b5f461d7e3f7c958a45f64fdfa1 Mon Sep 17 00:00:00 2001 From: Faiz Abbas Date: Tue, 14 Nov 2017 16:12:31 +0530 Subject: thermal: ti-bandgap: Add support for temperature sensor The dra7xx series of SOCs contain a temperature sensor and an associated analog-to-digital converter (ADC) which produces an output which is proportional to the SOC temperature. Add support for this temperature sensor. Signed-off-by: Faiz Abbas Reviewed-by: Simon Glass --- .../thermal/ti_soc_thermal.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 doc/device-tree-bindings/thermal/ti_soc_thermal.txt (limited to 'doc') diff --git a/doc/device-tree-bindings/thermal/ti_soc_thermal.txt b/doc/device-tree-bindings/thermal/ti_soc_thermal.txt new file mode 100644 index 0000000..b4e88c2 --- /dev/null +++ b/doc/device-tree-bindings/thermal/ti_soc_thermal.txt @@ -0,0 +1,35 @@ +* Texas Instrument dra7xx SCM bandgap bindings + +In the System Control Module, SoC supplies a voltage reference +and a temperature sensor feature that are gathered in the band +gap voltage and temperature sensor (VBGAPTS) module. The band +gap provides current and voltage reference for its internal +circuits and other analog IP blocks. The analog-to-digital +converter (ADC) produces an output value that is proportional +to the silicon temperature. + +Required properties: +- compatible : Should be: + - "ti,dra752-bandgap" +- interrupts : this entry should indicate which interrupt line +the talert signal is routed to; +- regs : this is specific to each bandgap version, because +the mapping may change from soc to soc, apart from depending +on available features. + +Optional: +- gpios : this entry should be used to inform which GPIO +line the tshut signal is routed to. The informed GPIO will +be treated as an IRQ; + +Example: +bandgap { + reg = <0x4a0021e0 0xc + 0x4a00232c 0xc + 0x4a002380 0x2c + 0x4a0023C0 0x3c + 0x4a002564 0x8 + 0x4a002574 0x50>; + compatible = "ti,dra752-bandgap"; + interrupts = <0 126 4>; /* talert */ +}; -- cgit v1.1