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There are more and more variables which are SoC-specific, so add
soc/wdt.h for each SoC and rename common/wdt.h to
common/wdt_common.h.
wdt_set_req() is almost the same for mt8192, mt8195 and mt8186, so
move it to a common file wdt_req.c.
TEST=build pass
BUG=b:233720142
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I7a334b3e7cd4f24a848dd31aca546dc7236d5fb8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65636
Reviewed-by: Yidi Lin <yidilin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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To simplify the calling sequence for mtk_wdt_preinit() and we always
adjust request setting in mtk_wdt_preinit(), we rename
mtk_wdt_preinit() to mtk_wdt_set_req() and call it in mtk_wdt_init().
From this modification, we can also enable thermal hardware reset
feature (CB:64676, CB:64675) in MT8192 and MT8195.
BUG=none
TEST=build pass
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I1904ff9387f7677a077068f2c3df923bd642ea3d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64861
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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Under the current watchdog setting, the system will not reboot when the
temperature is too high. To enable thermal hardware reset, we need to
enable thermal control request and set it to reboot mode.
Note that because thermal throttle (by lowering cpu frequency) is
currently enabled, the thermal hardware reset shouldn't be triggered
under normal circumstances.
This feature is only for new hardware structure for thermal. Therefore,
we only need to apply it on MT8192/MT8195/MT8186.
This setting is based on thermal and watchdog section of MT8186
Function Specification.
BUG=none
TEST=emerge-corsola coreboot
TEST=thermal hardware reset is working.
Signed-off-by: Runyang Chen <runyang.chen@mediatek.corp-partner.google.com>
Change-Id: Id2ed55e6d4f4eec450bf7c849f726a389eeb6694
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64659
Reviewed-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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In MT8186, we need to disable spm_thermal to prevent it from
influencing other wdt status.
There are two hardware pathes which are used for asserting watchdog
from thermal. We can disable status of path 1 because status of
path 2 is used.
1. Thermal -> SPM -> WDT
2. Thermal -> WDT
Spm_thermal (path 1) is a flexible option for software control, and
the hardware designer suggests that we should disable it if we don't
use it.
BUG=none
TEST=build pass
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I0ffde6bad3000a64e3b5782edaa72c62da034302
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62890
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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The implementation of clearing watchdog status is wrong in CB:58835.
The value written to the 'wdt_mode' register should be
'wdt_mode | 0x22000000' instead of 'wdt_status | 0x22000000'.
BUG=b:204229208
TEST=check watchdog status is cleared.
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I8c5dbaab2ac43d3867037bc4160aa5af2d79284f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61446
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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MT8186 requires writing speical value to mode register to clear
status register. The flow of clear status is different from other
platforms, so we override mtk_wdt_clr_status() for MT8186.
TEST=build pass
BUG=b:202871018
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I290b69573a8e58db76814e16b5c17c23413f1108
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58835
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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