imx_mmdc_mask_handshake
imx_mmdc_mask_handshake(base, 1);
imx_mmdc_mask_handshake(base, 0);
imx_mmdc_mask_handshake(base, 0);
imx_mmdc_mask_handshake(base, 0);
imx_mmdc_mask_handshake(base, 0);
void imx_mmdc_mask_handshake(void __iomem *ccm_base, unsigned int chn);