LDPMR
value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
lcdc_write(sdev, LDPMR, 0);
[LDPMR] = 0x460,
[LDPMR] = 0x63c,
tmp = lcdc_read_chan(&priv->ch[k], LDPMR)
lcdc_write_chan(ch, LDPMR, 0);