diff options
Diffstat (limited to 'src/mainboard/google/rambi')
4 files changed, 8 insertions, 1 deletions
diff --git a/src/mainboard/google/rambi/romstage.c b/src/mainboard/google/rambi/romstage.c index d8ba001efa..25fe85952b 100644 --- a/src/mainboard/google/rambi/romstage.c +++ b/src/mainboard/google/rambi/romstage.c @@ -32,7 +32,10 @@ static void *get_spd_pointer(char *spd_file_content, int total_spds, int *dual) ssus_disable_internal_pull(GPIO_SSUS_37_PAD); ssus_disable_internal_pull(GPIO_SSUS_38_PAD); ssus_disable_internal_pull(GPIO_SSUS_39_PAD); -#ifdef GPIO_SSUS_40_PAD +#ifdef GPIO_SSUS_40_PAD_USE_PULLDOWN + /* To prevent floating pin on shipped systems. */ + ssus_enable_internal_pull(GPIO_SSUS_40_PAD, PAD_PULL_DOWN | PAD_PU_20K); +#elif defined (GPIO_SSUS_40_PAD) ssus_disable_internal_pull(GPIO_SSUS_40_PAD); #endif ram_id |= (ssus_get_gpio(GPIO_SSUS_37_PAD) << 0); diff --git a/src/mainboard/google/rambi/variants/candy/include/variant/variant.h b/src/mainboard/google/rambi/variants/candy/include/variant/variant.h index 0c58ceefa2..fe4c475825 100644 --- a/src/mainboard/google/rambi/variants/candy/include/variant/variant.h +++ b/src/mainboard/google/rambi/variants/candy/include/variant/variant.h @@ -38,5 +38,6 @@ static const uint32_t dual_channel_config = #define GPIO_SSUS_38_PAD 50 #define GPIO_SSUS_39_PAD 58 #define GPIO_SSUS_40_PAD 52 +#define GPIO_SSUS_40_PAD_USE_PULLDOWN #endif diff --git a/src/mainboard/google/rambi/variants/glimmer/include/variant/variant.h b/src/mainboard/google/rambi/variants/glimmer/include/variant/variant.h index 0ea42c52e9..59d5ee1f6d 100644 --- a/src/mainboard/google/rambi/variants/glimmer/include/variant/variant.h +++ b/src/mainboard/google/rambi/variants/glimmer/include/variant/variant.h @@ -38,5 +38,6 @@ static const uint32_t dual_channel_config = #define GPIO_SSUS_38_PAD 50 #define GPIO_SSUS_39_PAD 58 #define GPIO_SSUS_40_PAD 52 +#define GPIO_SSUS_40_PAD_USE_PULLDOWN #endif diff --git a/src/mainboard/google/rambi/variants/gnawty/include/variant/variant.h b/src/mainboard/google/rambi/variants/gnawty/include/variant/variant.h index 9bac7bc89e..bd79c982ed 100644 --- a/src/mainboard/google/rambi/variants/gnawty/include/variant/variant.h +++ b/src/mainboard/google/rambi/variants/gnawty/include/variant/variant.h @@ -33,5 +33,7 @@ static const uint32_t dual_channel_config = #define GPIO_SSUS_37_PAD 57 #define GPIO_SSUS_38_PAD 50 #define GPIO_SSUS_39_PAD 58 +#define GPIO_SSUS_40_PAD 52 +#define GPIO_SSUS_40_PAD_USE_PULLDOWN #endif |