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/*
* 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);
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