diff options
| -rw-r--r-- | src/mainboard/siemens/mc_apl1/variants/mc_apl1/mainboard.c | 10 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/include/soc/pcr_ids.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl1/mainboard.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl1/mainboard.c index 099b67b01d..6d22fd9826 100644 --- a/src/mainboard/siemens/mc_apl1/variants/mc_apl1/mainboard.c +++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl1/mainboard.c @@ -27,6 +27,8 @@ #include <baseboard/variants.h> #include <variant/ptn3460.h> +#define TX_DWORD3 0xa8c + void variant_mainboard_final(void) { int status; @@ -63,6 +65,14 @@ void variant_mainboard_final(void) * offset 0x341C bit [3:0]. */ pcr_or32(PID_LPC, PCR_LPC_PRC, (PCR_LPC_CCE_EN | PCR_LPC_PCE_EN)); + + /* + * Correct the SATA transmit signal via the High Speed I/O Transmit + * Control Register 3. + * Bit [23:16] set the output voltage swing for TX line. + * The value 0x4a sets the swing level to 0.58 V. + */ + pcr_rmw32(PID_MODPHY, TX_DWORD3, (0x00 << 16), (0x4a << 16)); } static void wait_for_legacy_dev(void *unused) diff --git a/src/soc/intel/apollolake/include/soc/pcr_ids.h b/src/soc/intel/apollolake/include/soc/pcr_ids.h index f6c990e495..dba69b1ecc 100644 --- a/src/soc/intel/apollolake/include/soc/pcr_ids.h +++ b/src/soc/intel/apollolake/include/soc/pcr_ids.h @@ -33,6 +33,7 @@ #define PID_ITSS 0xD0 #define PID_RTC 0xD1 #define PID_LPC 0xD2 +#define PID_MODPHY 0xA5 #define PID_AUNIT 0x4d #define PID_BUNIT 0x4c |