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thermal/drivers: Add support for Airoha EN7581 thermal sensor

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Add support for Airoha EN7581 thermal sensor. This provide support for
reading the CPU or SoC Package sensor and to setup trip points for hot
and critical condition. An interrupt is fired to react on this and
doesn't require passive poll to read the temperature.

The thermal regs provide a way to read the ADC value from an external
register placed in the Chip SCU regs. Monitor will read this value and
fire an interrupt if the trip condition configured is reached.

The Thermal Trip and Interrupt logic is conceptually similar to Mediatek
LVTS Thermal but differ in register mapping and actual function/bug
workaround. The implementation only share some register names but from
functionality observation it's very different and used only for the
basic function of periodically poll the temp and trip the interrupt.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20250511185003.3754495-2-ansuelsmth@gmail.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Christian Marangi 2025-05-11 20:49:55 +02:00 • committed by Daniel Lezcano
commit 42de37f40e
3 changed files with 499 additions and 0 deletions
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