Session ID: SFO17-402 Session Name: SDIO power on/off time impacts system suspend/resume time! - SFO17-402 Speaker: Ulf Hansson

Track: Power Management

★ Session Summary ★ Often an embedded WLAN chip is connected via an SDIO bus. During a system suspend/resume the SDIO card (WLAN chip) gets re-initialized unconditionally, even when it’s not needed.

The re-initialization of an SDIO card often consumes several hundreds of milliseconds, as also shown by real measurements. Unfortunate this time adds up to the total suspend/resume time for the system.

In this session the problem is being described and a solution being explored.

★ Resources ★ Event Page: Presentation: Video: —————————————————

★ Event Details ★ Linaro Connect San Francisco 2017 (SFO17) 25-29 September 2017 Hyatt Regency San Francisco Airport

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Event Date: 28 Sept 2017

Speakers: Ulf Hansson

Position: Senior Kernel Engineer at Linaro