NTDTBP0
renesas_writel(i3c->regs, NTDTBP0, val);
i3c_writel_fifo(i3c->regs + NTDTBP0, cmd->tx_buf, cmd->len);
i3c_readl_fifo(i3c->regs + NTDTBP0, cmd->rx_buf, bytes_remaining);
renesas_readl(i3c->regs, NTDTBP0); /* dummy read */
renesas_readl(i3c->regs, NTDTBP0); /* dummy read */
*cmd->i2c_buf = renesas_readl(i3c->regs, NTDTBP0);
i3c_readl_fifo(i3c->regs + NTDTBP0, cmd->rx_buf, read_bytes);
renesas_writel(i3c->regs, NTDTBP0, val);
i3c_writel_fifo(i3c->regs + NTDTBP0, cmd->tx_buf, cmd->len);