| /* |
| * Driver for BayHub Technology BH720 PCI to eMMC 5.0 HS200 bridge |
| * |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2018 Google LLC. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| enum { |
| BH720_PROTECT = 0xd0, |
| BH720_PROTECT_LOCK_OFF = 0, |
| BH720_PROTECT_LOCK_ON = BIT(0), |
| BH720_PROTECT_OFF = 0, |
| BH720_PROTECT_ON = BIT(31), |
| |
| BH720_LINK_CTRL = 0x90, |
| BH720_LINK_CTRL_L0_ENABLE = BIT(0), |
| BH720_LINK_CTRL_L1_ENABLE = BIT(1), |
| BH720_LINK_CTRL_CLKREQ = BIT(8), |
| |
| BH720_MISC2 = 0xf0, |
| BH720_MISC2_ASPM_DISABLE = BIT(0), |
| BH720_MISC2_APSM_CLKREQ_L1 = BIT(7), |
| BH720_MISC2_APSM_PHY_L1 = BIT(10), |
| BH720_MISC2_APSM_MORE = BIT(12), |
| |
| BH720_MEM_RW_DATA = 0x200, |
| BH720_MEM_RW_ADR = 0x204, |
| BH720_MEM_ACCESS_EN = 0x208, |
| BH720_PCR = 0x304, |
| BH720_PCR_DATA_CMD_DRV_MAX = 7, |
| BH720_PCR_CLK_DRV_MAX = 7, |
| |
| BH720_RTD3_L1 = 0x3e0, |
| BH720_RTD3_L1_DISABLE_L1 = BIT(28), |
| }; |
| |
| void bh720_driving_strength(struct device *dev); |