sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

soc/amd/common/block/gpio_banks: clear output enable in gpio_input_*

Browse Source 
The functions to configure a GPIO as input with pull-up/down need to
clear the output enable bit, so that the direction will be input. If the
pin was configured as output before, the pin direction was still output
after this call which is at least unexpected.

Change-Id: Id1fa1669195080b34fd62324616825415728b0b4
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49118
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
This commit is contained in:
Felix Held
2021-01-05 00:36:51 +01:00
parent dec00dd010
commit a1f254b91b
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/soc/amd/common/block/gpio_banks/gpio.c
View File

@@ -147,12 +147,12 @@ void gpio_set(gpio_t gpio_num, int value)
void gpio_input_pulldown(gpio_t gpio_num)
{
gpio_setbits32(gpio_num, GPIO_PULL_MASK, GPIO_PULLDOWN_ENABLE);
gpio_setbits32(gpio_num, GPIO_PULL_MASK | GPIO_OUTPUT_ENABLE, GPIO_PULLDOWN_ENABLE);
}
void gpio_input_pullup(gpio_t gpio_num)
{
gpio_setbits32(gpio_num, GPIO_PULL_MASK, GPIO_PULLUP_ENABLE);
gpio_setbits32(gpio_num, GPIO_PULL_MASK | GPIO_OUTPUT_ENABLE, GPIO_PULLUP_ENABLE);
}
void gpio_input(gpio_t gpio_num)