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| author | Fred Reitberger <reitbergerfred@gmail.com> | 2022-11-04 09:16:06 -0400 |
|---|---|---|
| committer | Fred Reitberger <reitbergerfred@gmail.com> | 2022-11-07 12:24:32 +0000 |
| commit | 5e8e911b7caee021faff96c4e82a77a42544ea62 (patch) | |
| tree | 03ccde28d83e56343b6b78f3e70cc93ba64b9544 /src/soc/amd/common | |
| parent | 502dc54ffc9d9220d29a47ca93cec20be6c8f946 (diff) | |
soc/amd/common/include/gpio_defs.h: Add comment for accuracy
The GPIO debounce timebase bit 4 is only 183uS on Picasso. On the other
SoCs it is 244uS. This affects the 1mS and 2mS actual debounce times
slightly.
Time PCO Others
1mS 0.915mS 1.220mS
2mS 2.013mS 2.684mS
Signed-off-by: Fred Reitberger <reitbergerfred@gmail.com>
Change-Id: Id84bef75e6ab134778721ca269d763a4bb2ddde5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69209
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/common')
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/gpio_defs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/gpio_defs.h b/src/soc/amd/common/block/include/amdblocks/gpio_defs.h index 187be51332..718a45cffc 100644 --- a/src/soc/amd/common/block/include/amdblocks/gpio_defs.h +++ b/src/soc/amd/common/block/include/amdblocks/gpio_defs.h @@ -113,6 +113,7 @@ #define GPIO_DEB_REMOVE_GLITCH (DEB_GLITCH_REMOVE << DEB_GLITCH_SHIFT) #define GPIO_TIMEBASE_61uS 0 +/* The next value is only 183uS on Picasso. It is 244uS on Cezanne and later SoCs */ #define GPIO_TIMEBASE_183uS (1 << 4) #define GPIO_TIMEBASE_15560uS (1 << 7) #define GPIO_TIMEBASE_62440uS (GPIO_TIMEBASE_183uS | GPIO_TIMEBASE_15560uS) |