MPC52xx_PSC_SEL_MODE_REG_1
out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
out_8(&PSC(port)->command, MPC52xx_PSC_SEL_MODE_REG_1);
out_8(&PSC(port)->command, MPC52xx_PSC_SEL_MODE_REG_1);
out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_SEL_MODE_REG_1);