diff options
| author | Tom Rini <trini@ti.com> | 2014-08-29 11:07:10 -0400 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-08-29 11:07:10 -0400 |
| commit | 5ddc329341a9a143f0567494e5f874008b22e1a7 (patch) | |
| tree | f3876e495e2b8a9f222edb88fa1c610e6639d68b /arch/arm/cpu/tegra-common/vpr.c | |
| parent | 5a1095a830299aef8dd32495e505e92ab1749e89 (diff) | |
| parent | a78cf41e79f64fe90f573b07ee3c88be533b97ca (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-tegra
Diffstat (limited to 'arch/arm/cpu/tegra-common/vpr.c')
| -rw-r--r-- | arch/arm/cpu/tegra-common/vpr.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/cpu/tegra-common/vpr.c b/arch/arm/cpu/tegra-common/vpr.c new file mode 100644 index 0000000000..f695811c9b --- /dev/null +++ b/arch/arm/cpu/tegra-common/vpr.c @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Tegra vpr routines */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/tegra.h> +#include <asm/arch/mc.h> + +/* Configures VPR. Right now, all we do is turn it off. */ +void config_vpr(void) +{ + struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE; + + /* Turn VPR off */ + writel(0, &mc->mc_video_protect_size_mb); + writel(TEGRA_MC_VIDEO_PROTECT_REG_WRITE_ACCESS_DISABLED, + &mc->mc_video_protect_reg_ctrl); + /* read back to ensure the write went through */ + readl(&mc->mc_video_protect_reg_ctrl); +} |