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- From a658ad57c2b9d46eb5395c7bb8cf83b8e0f289e7 Mon Sep 17 00:00:00 2001
- From: Brian Norris <[email protected]>
- Date: Fri, 28 Jul 2023 12:02:19 +0200
- Subject: [PATCH 2/3] firmware: qcom: scm: disable SDI on Google WiFi
- Google WiFi seems to have SDI (Secure Debug Image) enabled by default which
- prevents normal reboot from working causing the board to just hang after
- reboot is called.
- So lets disable SDI during SCM probe on Google WiFi boards in order to
- avoid a state where WDT will kick in and then the board will just hang
- in the debug mode.
- Signed-off-by: Brian Norris <[email protected]>
- ---
- drivers/firmware/qcom_scm.c | 7 +++++++
- 1 file changed, 7 insertions(+)
- --- a/drivers/firmware/qcom_scm.c
- +++ b/drivers/firmware/qcom_scm.c
- @@ -1337,6 +1337,13 @@ static int qcom_scm_probe(struct platfor
- if (download_mode)
- qcom_scm_set_download_mode(true);
-
- + /*
- + * Factory firmware leaves SDI (a debug interface), which prevents
- + * clean reboot.
- + */
- + if (of_machine_is_compatible("google,wifi"))
- + qcom_scm_disable_sdi();
- +
- return 0;
- }
-
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