| #!/usr/bin/env python3 |
| # -*- coding: utf-8 -*- |
| # |
| # Copyright (C) 2017-2020 The Project X-Ray Authors. |
| # |
| # Use of this source code is governed by a ISC-style |
| # license that can be found in the LICENSE file or at |
| # https://opensource.org/licenses/ISC |
| # |
| # SPDX-License-Identifier: ISC |
| dfii_control_sel = 0x01 |
| dfii_control_cke = 0x02 |
| dfii_control_odt = 0x04 |
| dfii_control_reset_n = 0x08 |
| |
| dfii_command_cs = 0x01 |
| dfii_command_we = 0x02 |
| dfii_command_cas = 0x04 |
| dfii_command_ras = 0x08 |
| dfii_command_wrdata = 0x10 |
| dfii_command_rddata = 0x20 |
| |
| ddrx_mr1 = 0x6 |
| |
| init_sequence = [ |
| ("Release reset", 0, 0, dfii_control_odt | dfii_control_reset_n, 50000), |
| ( |
| "Bring CKE high", 0, 0, |
| dfii_control_cke | dfii_control_odt | dfii_control_reset_n, 10000), |
| ( |
| "Load Mode Register 2, CWL=5", 512, 2, dfii_command_ras |
| | dfii_command_cas | dfii_command_we | dfii_command_cs, 0), |
| ( |
| "Load Mode Register 3", 0, 3, dfii_command_ras | dfii_command_cas |
| | dfii_command_we | dfii_command_cs, 0), |
| ( |
| "Load Mode Register 1", 6, 1, dfii_command_ras | dfii_command_cas |
| | dfii_command_we | dfii_command_cs, 0), |
| ( |
| "Load Mode Register 0, CL=6, BL=8", 2336, 0, dfii_command_ras |
| | dfii_command_cas | dfii_command_we | dfii_command_cs, 200), |
| ("ZQ Calibration", 1024, 0, dfii_command_we | dfii_command_cs, 200), |
| ] |
