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| author | Przemyslaw Marczak <p.marczak@samsung.com> | 2015-10-27 13:08:05 +0100 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2015-11-02 10:38:00 +0900 |
| commit | 1611c8cbcfe2ee50cc5e96f3a5c666c99d235107 (patch) | |
| tree | 45667f9633d85126d7ff3585bdd17d59844cc660 /configs | |
| parent | 9090d1dd0e379d598b72c7176cf55f3343421dae (diff) | |
| download | blackbird-obmc-uboot-1611c8cbcfe2ee50cc5e96f3a5c666c99d235107.tar.gz blackbird-obmc-uboot-1611c8cbcfe2ee50cc5e96f3a5c666c99d235107.zip | |
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>
Diffstat (limited to 'configs')
| -rw-r--r-- | configs/odroid-xu3_defconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configs/odroid-xu3_defconfig b/configs/odroid-xu3_defconfig index 780dcabfcc..4ab91fa828 100644 --- a/configs/odroid-xu3_defconfig +++ b/configs/odroid-xu3_defconfig @@ -16,3 +16,5 @@ CONFIG_PMIC_S2MPS11=y CONFIG_USB=y CONFIG_DM_USB=y CONFIG_VIDEO_BRIDGE=y +CONFIG_ADC=y +CONFIG_ADC_EXYNOS=y |
