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MEDIUM

pmdomain: imx: Fix i.MX8MP VC8000E power up sequence

Published Aug 15, 2026

Description

Per errata[1]: ERR050531: VPU_NOC power down handshake may hang during VC8000E/VPUMIX power up/down cycling. Description: VC8000E reset de-assertion edge and AXI clock may have a timing issue. Workaround: Set bit2 (vc8000e_clk_en) of BLK_CLK_EN_CSR to 0 to gate off both AXI clock and VC8000E clock sent to VC8000E and AXI clock sent to VPU_NOC m_v_2 interface during VC8000E power up(VC8000E reset is de-asserted by HW)

Add a bool variable is_errata_err050531 in 'struct imx8m_blk_ctrl_domain_data' to represent whether the workaround is needed. If is_errata_err050531 is true, first clear the clk before powering up gpc, then enable the clk after powering up gpc.

[1] https://www.nxp.com/webapp/Download?colCode=IMX8MP_1P33A

Affected products

Remediation

No remediation recorded yet.

Metrics

Weaknesses (1)

References (10)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner Linux
Published Aug 15, 2026
Updated Aug 17, 2026
Reserved Aug 9, 2026
NVD
Status Received
Modified Aug 17, 2026
Red Hat
Severity Low
Public date Aug 15, 2026