| A.s. Dong | de70d0e | 2018-11-10 15:13:04 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright (C) 2016 Freescale Semiconductor, Inc. |
| 4 | * Copyright 2017-2018 NXP |
| 5 | * Author: Dong Aisheng <aisheng.dong@nxp.com> |
| 6 | */ |
| 7 | |
| 8 | #include <linux/io.h> |
| 9 | #include <linux/of.h> |
| 10 | #include <linux/of_address.h> |
| 11 | |
| 12 | #define SMC_PMCTRL 0x10 |
| 13 | #define BP_PMCTRL_PSTOPO 16 |
| 14 | #define PSTOPO_PSTOP3 0x3 |
| 15 | |
| 16 | void __init imx7ulp_pm_init(void) |
| 17 | { |
| 18 | struct device_node *np; |
| 19 | void __iomem *smc1_base; |
| 20 | |
| 21 | np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1"); |
| 22 | smc1_base = of_iomap(np, 0); |
| 23 | WARN_ON(!smc1_base); |
| 24 | |
| 25 | /* Partial Stop mode 3 with system/bus clock enabled */ |
| 26 | writel_relaxed(PSTOPO_PSTOP3 << BP_PMCTRL_PSTOPO, |
| 27 | smc1_base + SMC_PMCTRL); |
| 28 | iounmap(smc1_base); |
| 29 | } |