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rockchip: gru: update the hynix lpddr3 config to run at 928MHz

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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>
This commit is contained in:
Shunqian Zheng
2016-05-11 15:18:17 +08:00
committed by Martin Roth
parent 6724b1b6b4
commit 0d9839b333
5 changed files with 1587 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/soc/rockchip/rk3399/sdram.c
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@@ -819,7 +819,7 @@ void sdram_init(const struct rk3399_sdram_params *sdram_params)
if ((sdram_params->dramtype == DDR3
&& sdram_params->ddr_freq > 800*MHz) ||
(sdram_params->dramtype == LPDDR3
&& sdram_params->ddr_freq > 800*MHz) ||
&& sdram_params->ddr_freq > 928*MHz) ||
(sdram_params->dramtype == LPDDR4
&& sdram_params->ddr_freq > 800*MHz))
die("SDRAM frequency is to high!");