diff options
| author | Mario Six <mario.six@gdsys.cc> | 2018-07-31 11:44:11 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-09-29 11:49:35 -0600 |
| commit | 5381c2856de3ed0191135b435cff39789e5f17ad (patch) | |
| tree | 2e92bfc8b507348684a1f69821dbf72ee789d562 /include/dm | |
| parent | 172942a4a0afe12a603470db7728f3871a81de01 (diff) | |
drivers: Add board uclass
Since there is no canonical "board device" that can be used in board
files, it is difficult to use DM function for board initialization in
these cases.
Hence, add a uclass that implements a simple "board device", which can
hold devices not suitable anywhere else in the device tree, and is also
able to read encoded information, e.g. hard-wired GPIOs on a GPIO
expander, read-only memory ICs, etc. that carry information about the
hardware.
The devices of this uclass expose methods to read generic data types
(integers, strings, booleans) to encode the information provided by the
hardware.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Diffstat (limited to 'include/dm')
| -rw-r--r-- | include/dm/uclass-id.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 7027ea076db..5e19465894b 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -30,6 +30,7 @@ enum uclass_id { UCLASS_ADC, /* Analog-to-digital converter */ UCLASS_AHCI, /* SATA disk controller */ UCLASS_BLK, /* Block device */ + UCLASS_BOARD, /* Device information from hardware */ UCLASS_CLK, /* Clock source, e.g. used by peripherals */ UCLASS_CPU, /* CPU, typically part of an SoC */ UCLASS_CROS_EC, /* Chrome OS EC */ |