1611c8cbcf
This commit adds additional file with implementation of board
detection code for Odroid-XU3/XU4.
The detection depends on compatible found in fdt:
- "samsung,exynos5" - uses Exynos5 generic code
- "samsung,odroidxu3" - try detect XU3 revision
There are few revisions of Odroid XU3/XU4, each can be detected
by checking the value of channel 9 of built-in ADC:
Rev ADC Board
0.1 0 XU3 0.1
0.2 372 XU3 0.2 | XU3L - no DISPLAYPORT
0.3 1280 XU4 0.1
The detection code depends on the ADC+10% value.
Implementation of functions:
- set_board_type() - read ADC and set type
- get_board_rev() - returns board revision: 1..3
- get_board_type() - returns board type string
Additional functions with return values of bool:
- board_is_generic() - true if found compatible "samsung,exynos5"
but not "samsung,odroidxu3"
- board_is_odroidxu3() - true if found compatible "samsung,odroidxu3"
and one of XU3 revision.
- board_is_odroidxu4() - true if found compatible "samsung,odroidxu3"
and XU4 revision.
After I2C controller init, the get_board_type() can check
if the XU3 board is a "Lite" variant, by probing chip
0x40 on I2C0 (INA231 - exists only on non-lite).
This is useful for setting fdt file name at misc_init_r().
Enabled configs:
- CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
- CONFIG_ODROID_REV_AIN
- CONFIG_REVISION_TAG
- CONFIG_BOARD_TYPES
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
28 lines
457 B
C
28 lines
457 B
C
#ifndef _EXYNOS5_DT_H_
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#define _EXYNOS5_DT_H_
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enum {
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EXYNOS5_BOARD_GENERIC,
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EXYNOS5_BOARD_ODROID_XU3,
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EXYNOS5_BOARD_ODROID_XU3_REV01,
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EXYNOS5_BOARD_ODROID_XU3_REV02,
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EXYNOS5_BOARD_ODROID_XU4_REV01,
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EXYNOS5_BOARD_ODROID_UNKNOWN,
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EXYNOS5_BOARD_COUNT,
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};
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struct odroid_rev_info {
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int board_type;
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int board_rev;
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int adc_val;
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const char *name;
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};
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bool board_is_generic(void);
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bool board_is_odroidxu3(void);
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bool board_is_odroidxu4(void);
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#endif
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