]> git.sur5r.net Git - u-boot/blob - drivers/sysreset/sysreset_rk3288.c
Merge branch 'master' of git://git.denx.de/u-boot-rockchip
[u-boot] / drivers / sysreset / sysreset_rk3288.c
1 /*
2  * (C) Copyright 2015 Google, Inc
3  *
4  * SPDX-License-Identifier:     GPL-2.0
5  */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <errno.h>
10 #include <sysreset.h>
11 #include <asm/io.h>
12 #include <asm/arch/clock.h>
13 #include <asm/arch/cru_rk3288.h>
14 #include <asm/arch/hardware.h>
15 #include <linux/err.h>
16
17 int rk3288_sysreset_request(struct udevice *dev, enum sysreset_t type)
18 {
19         struct rk3288_cru *cru = rockchip_get_cru();
20
21         if (IS_ERR(cru))
22                 return PTR_ERR(cru);
23         switch (type) {
24         case SYSRESET_WARM:
25                 rk_clrreg(&cru->cru_mode_con, 0xffff);
26                 writel(0xeca8, &cru->cru_glb_srst_snd_value);
27                 break;
28         case SYSRESET_COLD:
29                 rk_clrreg(&cru->cru_mode_con, 0xffff);
30                 writel(0xfdb9, &cru->cru_glb_srst_fst_value);
31                 break;
32         default:
33                 return -EPROTONOSUPPORT;
34         }
35
36         return -EINPROGRESS;
37 }
38
39 static struct sysreset_ops rk3288_sysreset = {
40         .request        = rk3288_sysreset_request,
41 };
42
43 U_BOOT_DRIVER(sysreset_rk3288) = {
44         .name   = "rk3288_sysreset",
45         .id     = UCLASS_SYSRESET,
46         .ops    = &rk3288_sysreset,
47 };