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| author | Jianqun Xu <jay.xu@rock-chips.com> | 2016-09-11 18:26:42 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2016-10-06 21:51:36 +0200 |
| commit | 681b6b94338f2ac8cc35e45ac5f84737b92357c3 (patch) | |
| tree | 16e5251dc60a4e3c6b3bf8966aa63465b6444bf0 /src/mainboard/google/gru/sdram_configs.c | |
| parent | 547a059b34b8bec7b5b441ffd93f2371011f0c47 (diff) | |
| download | coreboot-681b6b94338f2ac8cc35e45ac5f84737b92357c3.tar.xz | |
rockchip: rk3399: improve write leveling flow
To improve sdram 800MHz and 933MHz stability, we
need to modify write leveling flow to get the
proper write leveling value.
BUG=chrome-os-partner:56940
BRANCH=none
TEST=Boot from kevin on 933MHz, and do stressapptest
Change-Id: I5b24c93d4a57917fb9af7e5e2a95d8423ccbaa7e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: d84bf25b3e5de373c7913e6d534a810cb984b3fd
Original-Change-Id: I87efddf628c3683fcb85d6875e029cf3cbc482be
Original-Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Original-Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/384292
Original-Commit-Ready: Julius Werner <jwerner@chromium.org>
Original-Tested-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/16716
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard/google/gru/sdram_configs.c')
| -rw-r--r-- | src/mainboard/google/gru/sdram_configs.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/src/mainboard/google/gru/sdram_configs.c b/src/mainboard/google/gru/sdram_configs.c index 1235eff924..2aa05a7f7d 100644 --- a/src/mainboard/google/gru/sdram_configs.c +++ b/src/mainboard/google/gru/sdram_configs.c @@ -50,14 +50,10 @@ static enum dram_speeds get_sdram_index(void) if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN)) switch (id) { - case 0: - case 1: - case 2: - return dram_200MHz; - case 3: - return dram_666MHz_NO_ODT; - default: + case 4: return dram_800MHz; + default: + return dram_933MHz; } if (IS_ENABLED(CONFIG_BOARD_GOOGLE_GRU)) |