A vulnerability in the Linux kernel has been resolved, related to the pmdomain: imx: gpcv2: Adjust delay after power up handshake. The udelay(5) is not enough, sometimes causing a kernel panic still to be triggered. The correct way is to wait for the handshake, but it needs the BUS clock of BLK-CTL to be enabled, which is in a separate driver. So, delay is the only option here. The udelay(10) is a data obtained through experiment.