mhu_cfg_t
mhu->windows = readl_relaxed_bitfield(&mhu->recv->mhu_cfg, struct mhu_cfg_t, num_ch);
struct mhu_cfg_t mhu_cfg;
struct mhu_cfg_t mhu_cfg;
mhu->windows = readl_relaxed_bitfield(&mhu->send->mhu_cfg, struct mhu_cfg_t, num_ch);