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Commit a2686766 authored by Thierry Reding's avatar Thierry Reding
Browse files

soc/tegra: Implement runtime check for Tegra SoCs 



Subsequent patches will move some of the initialization code from SoC
setup code to regular initcalls. To prevent breakage on other SoCs in
multi-platform builds, these initcalls need to check that they indeed
run on Tegra.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent dd849e58

drivers/soc/tegra/Makefile

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Original line number Diff line number Diff line 
obj-$(CONFIG_ARCH_TEGRA) += fuse/



obj-$(CONFIG_ARCH_TEGRA) += common.o

drivers/soc/tegra/common.c

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Original line number Diff line number Diff line 
/*

 * Copyright (C) 2014 NVIDIA CORPORATION.  All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <linux/of.h>



#include <soc/tegra/common.h>



static const struct of_device_id tegra_machine_match[] = {

	{ .compatible = "nvidia,tegra20", },

	{ .compatible = "nvidia,tegra30", },

	{ .compatible = "nvidia,tegra114", },

	{ .compatible = "nvidia,tegra124", },

	{ }

};



bool soc_is_tegra(void)

{

	struct device_node *root;



	root = of_find_node_by_path("/");

	if (!root)

		return false;



	return of_match_node(tegra_machine_match, root) != NULL;

}

include/soc/tegra/common.h

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Original line number Diff line number Diff line 
/*

 * Copyright (C) 2014 NVIDIA Corporation

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#ifndef __SOC_TEGRA_COMMON_H__

#define __SOC_TEGRA_COMMON_H__



bool soc_is_tegra(void);



#endif /* __SOC_TEGRA_COMMON_H__ */