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u-boot/arch/arm/mach-tegra/gpu.c
Marek Behún 3058e283b8 fdt_support: Add fdt_for_each_node_by_compatible() helper macro
Add macro fdt_for_each_node_by_compatible() to allow iterating over
fdt nodes by compatible string.

Convert various usages of
    off = fdt_node_offset_by_compatible(fdt, start, compat);
    while (off > 0) {
        code();
        off = fdt_node_offset_by_compatible(fdt, off, compat);
    }
and similar, to
    fdt_for_each_node_by_compatible(off, fdt, start, compat)
        code();

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2022-01-20 11:35:29 +01:00

55 lines
1 KiB
C

// 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;
fdt_for_each_node_by_compatible(offset, blob, -1, compat)
fdt_status_okay(blob, offset);
return 0;
}
#endif