]> git.sur5r.net Git - u-boot/blob - arch/arm/mach-tegra/gpu.c
ARM: uniphier: move spl_boot_mode() to a separate file
[u-boot] / arch / arm / mach-tegra / gpu.c
1 /*
2  * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
3  *
4  * SPDX-License-Identifier:     GPL-2.0
5  */
6
7 /* Tegra vpr routines */
8
9 #include <common.h>
10 #include <asm/io.h>
11 #include <asm/arch/tegra.h>
12 #include <asm/arch/mc.h>
13
14 #include <fdt_support.h>
15
16 static bool _configured;
17
18 void tegra_gpu_config(void)
19 {
20         struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE;
21
22         /* Turn VPR off */
23         writel(0, &mc->mc_video_protect_size_mb);
24         writel(TEGRA_MC_VIDEO_PROTECT_REG_WRITE_ACCESS_DISABLED,
25                &mc->mc_video_protect_reg_ctrl);
26         /* read back to ensure the write went through */
27         readl(&mc->mc_video_protect_reg_ctrl);
28
29         debug("configured VPR\n");
30
31         _configured = true;
32 }
33
34 #if defined(CONFIG_OF_LIBFDT)
35
36 int tegra_gpu_enable_node(void *blob, const char *compat)
37 {
38         int offset;
39
40         if (!_configured)
41                 return 0;
42
43         offset = fdt_node_offset_by_compatible(blob, -1, compat);
44         while (offset != -FDT_ERR_NOTFOUND) {
45                 fdt_status_okay(blob, offset);
46                 offset = fdt_node_offset_by_compatible(blob, offset, compat);
47         }
48
49         return 0;
50 }
51
52 #endif