| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2016 Freescale Semiconductor, Inc. |
| * Copyright 2017-2018 NXP |
| * Author: Dong Aisheng <aisheng.dong@nxp.com> |
| */ |
| |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/of_address.h> |
| |
| #define SMC_PMCTRL 0x10 |
| #define BP_PMCTRL_PSTOPO 16 |
| #define PSTOPO_PSTOP3 0x3 |
| |
| void __init imx7ulp_pm_init(void) |
| { |
| struct device_node *np; |
| void __iomem *smc1_base; |
| |
| np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1"); |
| smc1_base = of_iomap(np, 0); |
| WARN_ON(!smc1_base); |
| |
| /* Partial Stop mode 3 with system/bus clock enabled */ |
| writel_relaxed(PSTOPO_PSTOP3 << BP_PMCTRL_PSTOPO, |
| smc1_base + SMC_PMCTRL); |
| iounmap(smc1_base); |
| } |
