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The Board ID on the Gru family of boards is determined by reading the
voltage from a resistor divider, each hardware revision is supposed to
have a unique resistor ratio, which allows to distinctly tell between
different Board ID.
While the long time approach to mapping resistor ratios (and voltages)
into Board ID remains under discussion, we know for sure the values
for Proto 1 and Proto 2. Let's just use them for now.
Since Board ID can be queried multiple times during boot, ideally it
should be read once and placed in the coreboot table to be available
to all coreboot stages. For now we just cache it so that at least
during the same stage the ADC has to run only once.
BRANCH=None
BUG=chrome-os-partner:51537
TEST=verified that the voltage reading on Proto 1 is as expected, and
Board ID 0 is reported.
Change-Id: I94bc7fc235dae4155feb6ca35b5ef0ab20c3ec9c
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: bb4064d0af8174b6ae247cdad9378b7f4e5f22ba
Original-Change-Id: I105ea97f8862b5707b582904c6f2e3e9406a0f07
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/340428
Original-Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: https://review.coreboot.org/14722
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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Add the sdram driver for rk3399. With this patch we can boot
into depthcharge.
This patch also include a config file for lpddr3-hynix-4GB
that generated bases on its datasheet.
Please refer to TRM V0.3 Part1 Chapter 9 for DMC.
BRANCH=none
BUG=chrome-os-partner:51537
TEST=boot to depthcharge on kevin
Change-Id: I2afcaa3b68dbad77a5fe677b835289b675ed2bef
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 5d777e29942057fb7237eefa34051d1f54b19405
Original-Change-Id: Ifa1fe98a7058869518757d50678a64620610d91d
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/332562
Reviewed-on: https://review.coreboot.org/14716
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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To avoid diverging too much on an actively developed code base, keep
the changes to a separate commit that can be downstreamed more easily:
- removed unused includes
- gave kevin board a "Kevin" part number
- marked RW_LEGACY as CBFS region (to follow up upstream changes)
- moved romstage entry point to SoC code (instead of encouraging
per-board copy pasta)
Change-Id: Ief0c8db3c4af96fe2be2e2397d8874ad06fb6f1f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/14362
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Most things still need to be filled in, but this will allow
us to build boards which use this SOC.
[pg: separated out from the combined commit that added both SoC and
board. Added board_info.txt that will be added downstream, too.]
Change-Id: I7facce7b98a5d19fb77746b1aee67fff74da8150
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 27dfc39efe95025be2271e2e00e9df93b7907840
Original-Change-Id: I6f2407ff578dcd3d0daed86dd03d8f5f4edcac53
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/332385
Reviewed-on: https://review.coreboot.org/14279
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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