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sdram noc timing will affect ddr latency, this patch improves
rk3399 sdram noc timing so improve memory performance.
BRANCH=gru
BUG=chrome-os-partner:57248
TEST=Boot from kevin board
Change-Id: I09e984490a7ad747ef8abfc6542d0e2c95ec19bc
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 43dfe55d713d371e39d21312772fd353614b7642
Original-Change-Id: I393e74ecdeb72930ac38ae9bcf311e5654f65162
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/382725
Original-Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Tested-by: Sonny Rao <sonnyrao@chromium.org>
Original-Commit-Queue: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://review.coreboot.org/16713
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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We found some boards are not stable when sdram is run at 933Mhz.
Before we can fix it, we need to lower the sdram frequency to 800MHz.
In this patch we modify the DQS delay from 0x280 to 0x260 and extend
the DQS window.
BRANCH=None
BUG=chrome-os-partner:56940
TEST=Booted Kevin.
Change-Id: I68561c4aa4d9ab66acfa3515a42d696157aff759
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 877a7f6ad22a5bde9f9e458bcb65f133f2f001bd
Original-Change-Id: I5eab6bbe96f0dae095c5353403292022e7a25421
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/382724
Original-Commit-Ready: Douglas Anderson <dianders@chromium.org>
Original-Tested-by: Douglas Anderson <dianders@chromium.org>
Original-Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-on: https://review.coreboot.org/16709
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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This patch changes Gru SDRAM parameters from structures that just get
compiled into the romstage to individual CBFS files. This allows us to
only load the parameter set we need for the board we're booting from
flash, which reduces our boot time and the SRAM memory footprint
required to hold the romstage.
TEST=Booted Kevin.
Change-Id: Ie88a515cbdb19a794ca0a230a56bcc82bed1e550
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/16274
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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