diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/arm/mach-tegra/gpu.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/arm/mach-tegra/gpu.c')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-tegra/gpu.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-tegra/gpu.c b/roms/u-boot/arch/arm/mach-tegra/gpu.c new file mode 100644 index 000000000..13ffade04 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-tegra/gpu.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved. + */ + +/* Tegra vpr routines */ + +#include <common.h> +#include <log.h> +#include <asm/io.h> +#include <asm/arch/tegra.h> +#include <asm/arch/mc.h> +#include <asm/arch-tegra/ap.h> + +#include <fdt_support.h> + +static bool _configured; + +void tegra_gpu_config(void) +{ + struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE; + +#if defined(CONFIG_TEGRA_SUPPORT_NON_SECURE) + if (!tegra_cpu_is_non_secure()) +#endif + { + /* 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); + } + + debug("configured VPR\n"); + + _configured = true; +} + +#if defined(CONFIG_OF_LIBFDT) + +int tegra_gpu_enable_node(void *blob, const char *compat) +{ + int offset; + + if (!_configured) + return 0; + + offset = fdt_node_offset_by_compatible(blob, -1, compat); + while (offset != -FDT_ERR_NOTFOUND) { + fdt_status_okay(blob, offset); + offset = fdt_node_offset_by_compatible(blob, offset, compat); + } + + return 0; +} + +#endif |