diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2016-04-20 14:49:56 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2016-04-25 16:49:02 -0700 |
| commit | 40c02e3ff2477df1aca7657a92905816e5a13d0c (patch) | |
| tree | 57f05231828259506bf8bfdd2c494e533715e01f /chip/stm32/gpio-stm32l4.c | |
| parent | cb0d8108e5a5b630ec05a8d21a824cb601246bf5 (diff) | |
| download | chrome-ec-40c02e3ff2477df1aca7657a92905816e5a13d0c.tar.gz | |
Bring up STM32L476G-Eval
This patch adds initial set of files to bring up STM32L476G-Eval board.
BUG=none
BRANCH=tot
TEST=Tested console. make buildall && make tests
Change-Id: I0c0f73f31e84099746fced4214c5ed7f45468cef
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/340100
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'chip/stm32/gpio-stm32l4.c')
| -rw-r--r-- | chip/stm32/gpio-stm32l4.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/chip/stm32/gpio-stm32l4.c b/chip/stm32/gpio-stm32l4.c new file mode 100644 index 0000000000..67df8ba157 --- /dev/null +++ b/chip/stm32/gpio-stm32l4.c @@ -0,0 +1,26 @@ +/* Copyright 2016 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* GPIO module for Chrome EC */ + +#include "clock.h" +#include "common.h" +#include "registers.h" + +void gpio_enable_clocks(void) +{ + /* + * Enable all GPIOs clocks + * + * TODO(crosbug.com/p/23770): only enable the banks we need to, + * and support disabling some of them in low-power idle. + */ + STM32_RCC_AHB2ENR |= STM32_RCC_AHB2ENR_GPIOMASK; + + /* Delay 1 AHB clock cycle after the clock is enabled */ + clock_wait_bus_cycles(BUS_AHB, 1); +} + +#include "gpio-f0-l.c" |