PMIC: First One to Turn On and Last One to Turn Off
Talkat Open Source Summit Europe + Embedded Linux Conference Europe 2019 · on Monday, 2019-10-28· at 11:30· Forum 3·
summary
Covers Power Management ICs (PMICs) used to power SoCs — including SMPS, LDOs, DC/DC converters, ADC, RTC and GPIO functionality — and how to develop Linux PMIC drivers. Describes PMIC debugging over I2C with concrete examples from TI DRA7 platform issues, and gives guidelines for writing regulator drivers plus an overview of the Linux regulator framework and ways to avoid common regulator-related problems.
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chapters (22)
- 0:00Intro
- 0:20Agenda
- 1:02Introduction to PMIC
- 3:18Example: TPS65218
- 4:04Example: TPS659039
- 6:21DRA7 Power Tree
- 7:38Types of voltage regulators
- 8:37Linux modeling of PMIC
- 9:19MFD Driver nuances
- 10:16Device Tree Modelling with an example
- 11:02Regulator Driver nuances
- 12:29Types of regulators in Linux
- 14:34Regulator Device Tree nodes - 2
- 15:04GPIO Driver nuances
- 15:32TPS659038 GPIO Device Tree
- 16:14RTC Driver nuances
- 16:50TPS659038 RTC Device Tree
- 17:08Debugging
- 18:30U-boot 12C debug tools
- 21:20Kernel 12C debug tools - 2
- 22:1612C Protocol fundamentals
- 24:0212C Hardware debug
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