CTRL_OFFSET
xlnx_pr_decoupler_write(priv, CTRL_OFFSET, CTRL_CMD_COUPLE);
xlnx_pr_decoupler_write(priv, CTRL_OFFSET, CTRL_CMD_DECOUPLE);
status = xlnx_pr_decouple_read(priv, CTRL_OFFSET);
ctrl = zynq_fpga_read(priv, CTRL_OFFSET);
ctrl = zynq_fpga_read(priv, CTRL_OFFSET);
zynq_fpga_write(priv, CTRL_OFFSET, ctrl);
ctrl = zynq_fpga_read(priv, CTRL_OFFSET);
zynq_fpga_write(priv, CTRL_OFFSET, ctrl);
ctrl = zynq_fpga_read(priv, CTRL_OFFSET);
zynq_fpga_write(priv, CTRL_OFFSET, ctrl);
ctrl = zynq_fpga_read(priv, CTRL_OFFSET);
zynq_fpga_write(priv, CTRL_OFFSET,
zynq_fpga_write(priv, CTRL_OFFSET,
zynq_fpga_read(priv, CTRL_OFFSET),
zynq_fpga_write(priv, CTRL_OFFSET,
zynq_fpga_read(priv, CTRL_OFFSET) & ~CTRL_PCAP_PR_MASK);