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There are two configs, sdram-lpddr3-hynix-2GB.inc and
sdram-lpddr3-samsung-2GB-24EB.inc that use .ddrconfig = 14.
Changing .ddrconfig from 14 to 3 improves performance
especially on contiguous memory accesses. Comparing the .ddrconfig:
- if .ddrconfig = 3,
C RDRR RRRR RRRR RRRR RBBB CCCC CCCC C---
- if .ddrconfig = 14,
C DRBB BRRR RRRR RRRR RRRR CCCC CCCC C---
where
- R: indicates Row bits
- B: indicates Bank bits
- C: indicates Column bits
- D: indicates Chip selects bits
.ddrconfig = 3 has multiple banks switching which improves DDR timing.
BUG=chrome-os-partner:57321
TEST=Boot from fievel and play video
BRANCH=veyron
Change-Id: Ifdcedc28e84429b8b79c7553b38b667631d29c09
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 93882e4f2000d93c9dae5e6d4b2e1f4b7bc9489e
Original-Change-Id: Ic98ebae48609a7604ec678b6bd14dd2b29b669c4
Original-Signed-off-by: ZhengShunQian <zhengsq@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/404691
Original-Commit-Ready: Shunqian Zheng <zhengsq@rock-chips.com>
Original-Tested-by: Shunqian Zheng <zhengsq@rock-chips.com>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/17210
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
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This makes the same changes to the LPDDR3 configuration that
were made for Samsung modules:
- Enable ODT function
- Change DS to 40 from 34.3
BUG=chrome-os-partner:47416
BRANCH=firmware-veyron-6588.B
TEST=Boot on mickey elpida board
Change-Id: If8c729188803dd854dbbe80539fb228636b5eb9f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b3eb8bc31b9727b67a6b53b4370315010d9d6379
Original-Change-Id: I2d54d3087ecd3536469866f30e4eb2d8b1acd5c1
Original-Signed-off-by: jiazi Yang <Tomato_Yang@asus.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/311153
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/311855
Original-Commit-Ready: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/12484
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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This simply copies veyron_brain to veyron_mickey and makes the
minimal set of changes (s/brain/mickey) to make it compile. The
follow-up patch will take into account board differences.
BUG=none
BRANCH=none
TEST="emerge-veyron_mickey coreboot" doesn't fail
Change-Id: I7d029b36d2fb865446490b896117ade632325a52
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 34f6b391290f99caf517d7e98c31c89dc57309be
Original-Change-Id: I03a2b80eb441384f363910467180479521765431
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/271360
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/10408
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
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