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meson: Add soc_rev to environment

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Add SoC revision to environment. This can be useful to select the
correct device tree at runtime (N2/N2+).

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Pascal Vizeli
2020-11-27 17:28:21 +01:00
committed by Neil Armstrong
parent cf47c0e23a
commit d42e7964d9
3 changed files with 21 additions and 0 deletions
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4
arch/arm/include/asm/arch-meson/boot.h
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@@ -7,6 +7,8 @@
#ifndef __MESON_BOOT_H__
#define __MESON_BOOT_H__
#include <linux/types.h>
/* Boot device */
#define BOOT_DEVICE_RESERVED 0
#define BOOT_DEVICE_EMMC 1
@@ -17,4 +19,6 @@
int meson_get_boot_device(void);
int meson_get_soc_rev(char *buff, size_t buff_len);
#endif /* __MESON_BOOT_H__ */