CRITICALITY

Low

DESCRIPTION

When TIMER5, TIMER6, TIMER7, or TIMER8 clocks are enabled (CM_IPU_TIMER5/6/7/8_CLKCTRL[0:1] MODULEMODE = 0x2:ENABLE) and the CD-IPU is in HW_AUTO mode (CM_IPU_CLKSTCTRL[0:1] CLKTRCTRL = 0x3:HW_AUTO) the corresponding TIMER will continue counting, but enabled interrupts will not be propagated to the destinations (MPU, DSP, etc) in the SoC until the TIMER registers are accessed from the CPUs (MPU, DSP etc.). This can result in missed timer interrupts.

WORKAROUND

In order for TIMER5/6/7/8 interrupts to be propagated and serviced correctly the CD_IPU domain should be set to SW_WKUP mode (CM_IPU_CLKSTCTRL[0:1] CLKTRCTRL = 0x2:SW_WKUP).

REVISIONS IMPACTED

AM571x SR 2.1, 2.0, 1.0
AM570x SR 2.1, 2.0

DRA79x: 2.1, 2.0

TDA2Ex (23mm): 2.0, 1.0

TDA2Ex (17mm): 2.1, 2.0

AM571x: 2.1, 2.0, 1.0

AM570x: 2.1, 2.0

DRA72x: 2.0, 1.0

DRA71x: 2.1, 2.0