rockchip: gru: update the hynix lpddr3 config to run at 928MHz
Update the DDR config and DRAM driver to allow running at up to
928MHz. Kevin config/clock rate are not being changed, but Gru now
runs at 928 MHz.
BRANCH=none
BUG=chrome-os-partner:51537
TEST=booted Kevin and Gru to Linux prompt. Ran stressapptest for 10 min on Gru,
Change-Id: I66c1a171d5c7d05b2878c7bc5eaa0d436c7a1be2
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 8baf0d82816a7ea1c4428e15caeefa2795d001f9
Original-Change-Id: I5e1d6d1025f10203da8f11afc3bbdf95f133c586
Original-Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/343984
Original-Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-on: https://review.coreboot.org/15027
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/soc/rockchip/rk3399/clock.c b/src/soc/rockchip/rk3399/clock.c
index 6222b77..ba66230 100644
--- a/src/soc/rockchip/rk3399/clock.c
+++ b/src/soc/rockchip/rk3399/clock.c
@@ -549,6 +549,10 @@
dpll_cfg = (struct pll_div)
{.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
break;
+ case 928*MHz:
+ dpll_cfg = (struct pll_div)
+ {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1};
+ break;
default:
die("Unsupported SDRAM frequency, add to clock.c!");
}