u-boot/board/samsung/common/Makefile
Przemyslaw Marczak 1611c8cbcf exynos5-dt-types: add board detection for Odroid XU3/XU3L/XU4.
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>
2015-11-02 10:38:00 +09:00

18 lines
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Makefile

#
# Copyright (C) 2012 Samsung Electronics
# Lukasz Majewski <l.majewski@samsung.com>
#
# SPDX-License-Identifier: GPL-2.0+
#
obj-$(CONFIG_SOFT_I2C_MULTI_BUS) += multi_i2c.o
obj-$(CONFIG_USB_GADGET_DOWNLOAD) += gadget.o
obj-$(CONFIG_MISC_COMMON) += misc.o
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_BOARD_COMMON) += board.o
ifdef CONFIG_EXYNOS5_DT
obj-y += exynos5-dt.o
obj-$(CONFIG_BOARD_TYPES) += exynos5-dt-types.o
endif
endif