[coreboot-gerrit] Patch merged into coreboot/master: 749559b tegra124: fix and fine tune the warm boot code

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 749559b1fbee31395c93fa25f9db708d414d3a79
Author: Joseph Lo <josephl at nvidia.com>
Date:   Fri Jun 27 11:22:41 2014 +0800

    tegra124: fix and fine tune the warm boot code
    
    We assume that the clock rate of SCLK/HCLK/PCLK was 408MHz which was same
    as PLLP. But that is incorrect, BootROM had switched it to pllp_out2
    with the rate 204MHz. So actually the warm boot procedure was running at
    the condition of SCLK=HCLK=PCLK=pllp_out2 with the rate 204MHz.
    
    And the CPU complex power on sequences were different with what we used
    in kernel and Coreboot. Fix up the sequence as below.
    * enable CPU clk
    * power on CPU complex
    * remove I/O clamps
    * remove CPU reset
    
    Update the time of the CPU complex power on function for record.
    * power_on_partition(PARTID_CRAIL): 528 uSec
    * power_on_partition(PARTID_CONC): 0 uSec
    * power_on_partition(PARTID_CE0): 4 uSec
    
    Finally, removing the redundant routine of a flow controller event with
    (20 | MSEC_EVENT | MODE_STOP).
    
    BUG=chrome-os-partner:29394
    BRANCH=none
    TEST=manually test LP0 with lid switch quickly and make sure the last
    write to restore register successfully
    
    Original-Change-Id: Ifb99ed239eb5572351b8d896535a7c451c17b8f8
    Original-Signed-off-by: Joseph Lo <josephl at nvidia.com>
    Original-Reviewed-on: https://chromium-review.googlesource.com/205901
    Original-Reviewed-by: Julius Werner <jwerner at chromium.org>
    Original-Reviewed-by: Jimmy Zhang <jimmzhang at nvidia.com>
    Original-Commit-Queue: Jimmy Zhang <jimmzhang at nvidia.com>
    (cherry picked from commit 4194a9af3999da4b061584cda9649944ec0fdfb1)
    Signed-off-by: Marc Jones <marc.jones at se-eng.com>
    
    Change-Id: If21d17dc888b2c289970163e4f695423173ca03d
    Reviewed-on: http://review.coreboot.org/8151
    Reviewed-by: Ronald G. Minnich <rminnich at gmail.com>
    Tested-by: build bot (Jenkins)


See http://review.coreboot.org/8151 for details.

-gerrit