diff options
| author | Tom Rini <trini@konsulko.com> | 2020-01-06 17:07:49 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-01-06 17:07:49 -0500 |
| commit | 5a8fa095cb848c60c630a83edf30d4fc46101e90 (patch) | |
| tree | 66652768520899ddea6a24a608c1be4ed6ecfcde /arch/x86/cpu/intel_common/lpss.c | |
| parent | 0b0c6af38738f2c132cfd41a240889acaa031c8f (diff) | |
| parent | 8fbbec12f7d2c18f8883f3371cfca74a98b5dd87 (diff) | |
Merge branch 'next'
Bring in the following merges:
commit 8fbbec12f7d2c18f8883f3371cfca74a98b5dd87
Merge: 87f69f467a83 63618e71e89b
Author: Tom Rini <trini@konsulko.com>
Date: Fri Jan 3 09:48:47 2020 -0500
Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq into next
- updates and fixes on ls1028a, lx2, ls1046a, MC-DPSPARSER support
commit 87f69f467a8335b171c71bf217d2625d515acd7c
Merge: c0912f9bbfb2 4466b9970319
Author: Tom Rini <trini@konsulko.com>
Date: Tue Dec 24 08:18:19 2019 -0500
Merge https://gitlab.denx.de/u-boot/custodians/u-boot-mpc85xx into next
- Enable DM driver on ppc/km boards
- Enable DM_USB for some of NXP powerpc platforms: P5040, T4240, T208x,
T104x, P4080, P2041, P2020, P1020, P3041
- Some updates in mpc85xx-ddr driver, km boards
commit c0912f9bbfb26dd03d189953678691b799d35b6e
Merge: 533c9f5714bd a1d6dc3f8407
Author: Tom Rini <trini@konsulko.com>
Date: Wed Dec 18 07:20:19 2019 -0500
Merge branch 'next' of https://gitlab.denx.de/u-boot/custodians/u-boot-x86 into next
- Various x86 common codes updated for TPL/SPL
- I2C designware driver updated for PCI
- ICH SPI driver updated to support Apollo Lake
- Add Intel FSP2 base support
- Intel Apollo Lake platform specific drivers support
- Add a new board Google Chromebook Coral
commit 533c9f5714bdba79dc6f2629284d4c1a08a611d1
Merge: 553cb0688782 033e18b47bd0
Author: Tom Rini <trini@konsulko.com>
Date: Tue Dec 17 07:53:08 2019 -0500
Merge tag '20191217-for-next' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c into next
i2c: for next
- misc: i2c_eeprom:
Add partition support and add ability to query size
of eeprom device and partitions
- i2c common:
add support for offset overflow in to address and add
sandbox tests for it.
commit 553cb06887825314e74a9bdac337467c77d1db88
Merge: f39abbbc531e b4f98b3b16ec
Author: Tom Rini <trini@konsulko.com>
Date: Thu Dec 12 08:18:59 2019 -0500
Merge tag 'dm-next-13dec19' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm into next
buildman improvements including toolchain environment feature
sandbox unicode support in serial
Diffstat (limited to 'arch/x86/cpu/intel_common/lpss.c')
| -rw-r--r-- | arch/x86/cpu/intel_common/lpss.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/x86/cpu/intel_common/lpss.c b/arch/x86/cpu/intel_common/lpss.c new file mode 100644 index 00000000000..26a2d2d1e36 --- /dev/null +++ b/arch/x86/cpu/intel_common/lpss.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Special driver to handle of-platdata + * + * Copyright 2019 Google LLC + * + * Some code from coreboot lpss.c + */ + +#include <common.h> +#include <dm.h> +#include <pci.h> +#include <asm/io.h> +#include <asm/lpss.h> + +enum { + LPSS_RESET_CTL_REG = 0x204, + + /* + * Bit 1:0 controls LPSS controller reset. + * + * 00 ->LPSS Host Controller is in reset (Reset Asserted) + * 01/10 ->Reserved + * 11 ->LPSS Host Controller is NOT at reset (Reset Released) + */ + LPSS_CNT_RST_RELEASE = 3, + + /* Power management control and status register */ + PME_CTRL_STATUS = 0x84, + + /* Bit 1:0 Powerstate, controls D0 and D3 state */ + POWER_STATE_MASK = 3, +}; + +/* Take controller out of reset */ +void lpss_reset_release(void *regs) +{ + writel(LPSS_CNT_RST_RELEASE, regs + LPSS_RESET_CTL_REG); +} + +void lpss_set_power_state(struct udevice *dev, enum lpss_pwr_state state) +{ + dm_pci_clrset_config8(dev, PME_CTRL_STATUS, POWER_STATE_MASK, state); +} |