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g: override RBOX fuses for correct POR behavior

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Sanity tested by powering up cr50 and checking for correct RBOX
register values.

This patch is mainly to address RBOX debounce issues and key blocking
while EC_RST is asserted.  A debounce value less than 4, sometimes
causes initial pin values to be incorrectly detected.  The latter is
related to https://chromium-review.googlesource.com/#/c/357590/.

As RBOX controls cannot be selectively bypassed (they have to be
bypassed as a group), all registers are set up in this patch

BUG=chrome-os-partner:54602
BRANCH=None
CQ-DEPEND=CL:377621
TEST=manual on Kevin

Do three-finger salute, enter recovery mode.

Change-Id: Ieb82c94fa33888ead359a77bf77981567998b3fc
Signed-off-by: Timothy Chen <timothytim@google.com>
Reviewed-on: https://chromium-review.googlesource.com/372001
Commit-Ready: Bill Richardson <wfrichar@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
This commit is contained in:
Bill Richardson
2016-08-29 17:01:49 -07:00
committed by chrome-bot
parent 60fc54854c
commit b9a55a09ec
1 changed files with 46 additions and 0 deletions
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46
chip/g/rbox.c
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@@ -28,5 +28,51 @@ static void rbox_init(void)
/* Clear any wakeup bits (write 0x2, then 0x0) */
GREG32(RBOX, WAKEUP) = GC_RBOX_WAKEUP_CLEAR_MASK;
GREG32(RBOX, WAKEUP) = 0;
/* Override rbox fuses and setup correct behavior */
GWRITE(RBOX, DEBUG_CLK10HZ_COUNT, 0x63ff);
GWRITE(RBOX, DEBUG_SHORT_DELAY_COUNT, 0x4ff);
GWRITE(RBOX, DEBUG_LONG_DELAY_COUNT, 0x31);
GWRITE(RBOX, DEBUG_DEBOUNCE, 0x4);
GWRITE(RBOX, DEBUG_KEY_COMBO0, 0xC0);
GWRITE(RBOX, DEBUG_KEY_COMBO1, 0x0);
GWRITE(RBOX, DEBUG_KEY_COMBO2, 0x0);
/* DEBUG_BLOCK_OUTPUT value should be 0x7 */
GWRITE(RBOX, DEBUG_BLOCK_OUTPUT,
GC_RBOX_DEBUG_BLOCK_OUTPUT_KEY0_SEL_MASK |
GC_RBOX_DEBUG_BLOCK_OUTPUT_KEY1_SEL_MASK |
GC_RBOX_DEBUG_BLOCK_OUTPUT_KEY0_VAL_MASK);
/* DEBUG_POL value should be 0x21 */
GWRITE(RBOX, DEBUG_POL,
0x1 << GC_RBOX_DEBUG_POL_AC_PRESENT_LSB |
0x0 << GC_RBOX_DEBUG_POL_PWRB_IN_LSB |
0x0 << GC_RBOX_DEBUG_POL_PWRB_OUT_LSB |
0x0 << GC_RBOX_DEBUG_POL_KEY0_IN_LSB |
0x0 << GC_RBOX_DEBUG_POL_KEY0_OUT_LSB |
0x1 << GC_RBOX_DEBUG_POL_KEY1_IN_LSB |
0x0 << GC_RBOX_DEBUG_POL_KEY1_OUT_LSB |
0x0 << GC_RBOX_DEBUG_POL_EC_RST_LSB |
0x0 << GC_RBOX_DEBUG_POL_BATT_DISABLE_LSB);
/* DEBUG_TERM value should be 0x1204 */
GWRITE(RBOX, DEBUG_TERM,
0x0 << GC_RBOX_DEBUG_TERM_AC_PRESENT_LSB |
0x1 << GC_RBOX_DEBUG_TERM_ENTERING_RW_LSB |
0x0 << GC_RBOX_DEBUG_TERM_PWRB_IN_LSB |
0x0 << GC_RBOX_DEBUG_TERM_PWRB_OUT_LSB |
0x2 << GC_RBOX_DEBUG_TERM_KEY0_IN_LSB |
0x0 << GC_RBOX_DEBUG_TERM_KEY0_OUT_LSB |
0x1 << GC_RBOX_DEBUG_TERM_KEY1_IN_LSB |
0x0 << GC_RBOX_DEBUG_TERM_KEY1_IN_LSB);
/* DEBUG_BLOCK_OUTPUT value should be 0x157 */
GWRITE(RBOX, DEBUG_DRIVE,
0x3 << GC_RBOX_DEBUG_DRIVE_PWRB_OUT_LSB |
0x1 << GC_RBOX_DEBUG_DRIVE_KEY0_OUT_LSB |
0x1 << GC_RBOX_DEBUG_DRIVE_KEY1_OUT_LSB |
0x1 << GC_RBOX_DEBUG_DRIVE_EC_RST_LSB |
0x1 << GC_RBOX_DEBUG_DRIVE_BATT_DISABLE_LSB);
/* FUSE_CTRL value should be 0x3 */
GWRITE(RBOX, FUSE_CTRL,
GC_RBOX_FUSE_CTRL_OVERRIDE_FUSE_MASK |
GC_RBOX_FUSE_CTRL_OVERRIDE_FUSE_READY_MASK);
}
DECLARE_HOOK(HOOK_INIT, rbox_init, HOOK_PRIO_DEFAULT - 1);