The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2020
Filed:
Oct. 25, 2018
Dell Products, L.p., Round Rock, TX (US);
Christopher D. Arzola, Round Rock, TX (US);
Manjunath Am, Bangalore, IN;
Rama Rao Bisa, Bangalore, IN;
Kala Sampathkumar, Bangalore, IN;
Elie Antoun Jreij, Pflugerville, TX (US);
Chitrak Gupta, Bangalore, IN;
Komal Dhote, Chhattisgarh, IN;
Suresh Vijaykumar, Chennai, IN;
Prasanna Kumar Sahoo, Bangalore, IN;
Dell Products, L.P., Round Rock, TX (US);
Abstract
Embodiments are described for operating a device management bus coupled to a remote access controller and a managed device. The remote access controller detects an inoperable state of the bus and determines a FRU (Field Replaceable Unit) memory is accessible on the managed device. A predefined reset indicator is written to the FRU memory. The managed device monitors for the reset indicator being written to a specified location in FRU memory. Upon detecting the reset indicator in FRU memory, the managed device resets a bus controller coupled to the device management bus and transmits a reset notification on the device management bus. The remote access controller may include an I2C shim that controls access to an I2C multiplexer utilized for transmitting I2C commands from a service processor and an I2C coprocessor, preventing certain inoperable bus states due to concurrent operation of the I2C multiplexer by the I2C coprocessor and the service processor.