diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/veyron_pinky/romstage.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/google/veyron_pinky/romstage.c b/src/mainboard/google/veyron_pinky/romstage.c index 6f9b9d1392..76a57e2c77 100644 --- a/src/mainboard/google/veyron_pinky/romstage.c +++ b/src/mainboard/google/veyron_pinky/romstage.c @@ -55,6 +55,25 @@ static void regulate_vdd_log(unsigned int mv) pwm_init(1, period_ns, duty_ns); } +static void configure_l2ctlr(void) +{ + uint32_t l2ctlr; + + l2ctlr = read_l2ctlr(); + l2ctlr &= 0xfffc0000; /* clear bit0~bit17 */ + + /* + * Data RAM write latency: 2 cycles + * Data RAM read latency: 2 cycles + * Data RAM setup latency: 1 cycle + * Tag RAM write latency: 1 cycle + * Tag RAM read latency: 1 cycle + * Tag RAM setup latency: 1 cycle + */ + l2ctlr |= (1 << 3 | 1 << 0); + write_l2ctlr(l2ctlr); +} + void main(void) { #if CONFIG_COLLECT_TIMESTAMPS @@ -66,6 +85,7 @@ void main(void) #endif console_init(); + configure_l2ctlr(); /* vdd_log 1200mv is enough for ddr run 666Mhz */ regulate_vdd_log(1200); |