In Tiger Lake the Firmware CM is always enabled (so bit 0 is always set)
but it may be in "pass through" mode which means it requires Software CM
instead. This can be determined by checking bit 31 instead.
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
---
drivers/thunderbolt/icm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index ffcc8c3459e5..b51fc3f62b1f 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -1635,11 +1635,14 @@ static void icm_icl_rtd3_veto(struct tb *tb, const struct icm_pkg_header *hdr)
static bool icm_tgl_is_supported(struct tb *tb)
{
+ u32 val;
+
/*
* If the firmware is not running use software CM. This platform
* should fully support both.
*/
- return icm_firmware_running(tb->nhi);
+ val = ioread32(tb->nhi->iobase + REG_FW_STS);
+ return !!(val & REG_FW_STS_NVM_AUTH_DONE);
}
static void icm_handle_notification(struct work_struct *work)
--
2.28.0
