rk3288: configure l2ctlr in romstage
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
BUG=None
TEST=Boot Veyron Pinky
Change-Id: I1d710f65114be6a976aa3fe23b076e89c14ac8b8
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 421c2e5ba44f1693f8b3c869289fc93ab9ef5965
Original-Change-Id: Ic9c909b7913d434bd40016c6a820ddff7e991634
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/223713
Original-Reviewed-by: Doug Anderson <dianders@chromium.org>
Original-Commit-Queue: Doug Anderson <dianders@chromium.org>
Reviewed-on: http://review.coreboot.org/9347
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/google/veyron_pinky/romstage.c b/src/mainboard/google/veyron_pinky/romstage.c
index 6f9b9d1..76a57e2 100644
--- a/src/mainboard/google/veyron_pinky/romstage.c
+++ b/src/mainboard/google/veyron_pinky/romstage.c
@@ -55,6 +55,25 @@
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 @@
#endif
console_init();
+ configure_l2ctlr();
/* vdd_log 1200mv is enough for ddr run 666Mhz */
regulate_vdd_log(1200);