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: http://connect.linaro.org/resource/sfo17/sfo17-402/ Presentation: https://www.slideshare.net/linaroorg/sdio-power-onoff-time-impacts-system-suspendresume-time-sfo17213 Video: https://www.youtube.com/watch?v=ikM0iXDyC8k —————————————————

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


Keyword: ‘http://www.linaro.org’ ‘http://connect.linaro.org’ ————————————————— Follow us on Social Media https://www.facebook.com/LinaroOrg https://twitter.com/linaroorg https://www.youtube.com/user/linaroorg?sub_confirmation=1 https://www.linkedin.com/company/1026961

Event Date: 28 Sept 2017

Speakers: Ulf Hansson

Position: Senior Kernel Engineer at Linaro