CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of the power-up sequence for the VC8000E component in i.MX8MP systems, which may lead to a hang during power cycling due to a timing issue with the reset de-assertion edge and AXI clock. This can disrupt system stability and performance, particularly in embedded applications relying on this hardware. Organizations utilizing i.MX8MP processors in their Linux environments should prioritize addressing this issue to ensure reliable operation and prevent potential downtime.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: pmdomain: imx: Fix i.MX8MP VC8000E power up sequence 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