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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-07-17 17:17:36 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-07-17 17:17:36 +0300 |
| commit | a3db9d60a118571e696b684a6e8c692a2b064941 (patch) | |
| tree | ff7bae0f79b7a2ee0bce03de4f883550200c52a9 /Documentation/bt8xxgpio.txt | |
| parent | 2748e76ddb2967c4030171342ebdd3faa6a5e8e8 (diff) | |
| parent | 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff) | |
| download | linux-a3db9d60a118571e696b684a6e8c692a2b064941.tar.xz | |
Merge tag 'v4.13-rc1' into patchwork
Linux v4.13-rc1
* tag 'v4.13-rc1': (11136 commits)
Linux v4.13-rc1
random: reorder READ_ONCE() in get_random_uXX
random: suppress spammy warnings about unseeded randomness
replace incorrect strscpy use in FORTIFY_SOURCE
kmod: throttle kmod thread limit
kmod: add test driver to stress test the module loader
MAINTAINERS: give kmod some maintainer love
xtensa: use generic fb.h
fault-inject: add /proc/<pid>/fail-nth
fault-inject: simplify access check for fail-nth
fault-inject: make fail-nth read/write interface symmetric
fault-inject: parse as natural 1-based value for fail-nth write interface
fault-inject: automatically detect the number base for fail-nth write interface
kernel/watchdog.c: use better pr_fmt prefix
MAINTAINERS: move the befs tree to kernel.org
lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int
mm: fix overflow check in expand_upwards()
ubifs: Set double hash cookie also for RENAME_EXCHANGE
ubifs: Massage assert in ubifs_xattr_set() wrt. init_xattrs
ubifs: Don't leak kernel memory to the MTD
...
Diffstat (limited to 'Documentation/bt8xxgpio.txt')
| -rw-r--r-- | Documentation/bt8xxgpio.txt | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/Documentation/bt8xxgpio.txt b/Documentation/bt8xxgpio.txt index d8297e4ebd26..a845feb074de 100644 --- a/Documentation/bt8xxgpio.txt +++ b/Documentation/bt8xxgpio.txt @@ -1,12 +1,8 @@ -=============================================================== -== BT8XXGPIO driver == -== == -== A driver for a selfmade cheap BT8xx based PCI GPIO-card == -== == -== For advanced documentation, see == -== http://www.bu3sch.de/btgpio.php == -=============================================================== +=================================================================== +A driver for a selfmade cheap BT8xx based PCI GPIO-card (bt8xxgpio) +=================================================================== +For advanced documentation, see http://www.bu3sch.de/btgpio.php A generic digital 24-port PCI GPIO card can be built out of an ordinary Brooktree bt848, bt849, bt878 or bt879 based analog TV tuner card. The @@ -17,9 +13,8 @@ The bt8xx chip does have 24 digital GPIO ports. These ports are accessible via 24 pins on the SMD chip package. -============================================== -== How to physically access the GPIO pins == -============================================== +How to physically access the GPIO pins +====================================== The are several ways to access these pins. One might unsolder the whole chip and put it on a custom PCI board, or one might only unsolder each individual @@ -27,7 +22,7 @@ GPIO pin and solder that to some tiny wire. As the chip package really is tiny there are some advanced soldering skills needed in any case. The physical pinouts are drawn in the following ASCII art. -The GPIO pins are marked with G00-G23 +The GPIO pins are marked with G00-G23:: G G G G G G G G G G G G G G G G G G 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 |