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| author | Leah Rowe <vimuser@noreply.codeberg.org> | 2025-11-18 15:12:28 +0100 |
|---|---|---|
| committer | Leah Rowe <vimuser@noreply.codeberg.org> | 2025-11-18 15:12:28 +0100 |
| commit | 48b00ce3c8cca6c022b4cbcaa27fe2348998ca97 (patch) | |
| tree | c2da9de0028aa2bd9dd90df98aae225bbb4ca244 /config/coreboot/default/patches/0043-mb-dell-snb_ivb_latitude-Disable-EC-initiated-shutdo.patch | |
| parent | 1b10c072d3c008de033a763bea846fc9abc5187e (diff) | |
| parent | c0dab3397273f6266637a7ffc547476b14856f31 (diff) | |
Merge pull request 'config/coreboot/default: Disable Latitude early thermal shutdown' (#376) from nic3-14159/lbmk:mec5035-updates into master
Reviewed-on: https://codeberg.org/libreboot/lbmk/pulls/376
Diffstat (limited to 'config/coreboot/default/patches/0043-mb-dell-snb_ivb_latitude-Disable-EC-initiated-shutdo.patch')
| -rw-r--r-- | config/coreboot/default/patches/0043-mb-dell-snb_ivb_latitude-Disable-EC-initiated-shutdo.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/config/coreboot/default/patches/0043-mb-dell-snb_ivb_latitude-Disable-EC-initiated-shutdo.patch b/config/coreboot/default/patches/0043-mb-dell-snb_ivb_latitude-Disable-EC-initiated-shutdo.patch new file mode 100644 index 00000000..7c9afc14 --- /dev/null +++ b/config/coreboot/default/patches/0043-mb-dell-snb_ivb_latitude-Disable-EC-initiated-shutdo.patch @@ -0,0 +1,36 @@ +From 6e52d15cd47c849567bfc2cb75ccf3c6513dc688 Mon Sep 17 00:00:00 2001 +From: Nicholas Chin <nic.c3.14@gmail.com> +Date: Sun, 11 May 2025 16:28:23 -0600 +Subject: [PATCH 43/43] mb/dell/snb_ivb_latitude: Disable EC initiated shutdown + at 87 degrees + +If command 0xBF isn't sent, the EC will shut down the system without +warning once the CPU reaches approximately 87 degrees, without the +system thermal throttling first. Call the newly added function from the +MEC5035 code to send this command and disable this behavior. + +Tested on the Latitude E6430. + +Change-Id: I2b2dc1e3ab115e05d05eaac06892343394d37fdf +Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com> +--- + src/mainboard/dell/snb_ivb_latitude/early_init.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/src/mainboard/dell/snb_ivb_latitude/early_init.c b/src/mainboard/dell/snb_ivb_latitude/early_init.c +index ff83db095b..ef385a0a70 100644 +--- a/src/mainboard/dell/snb_ivb_latitude/early_init.c ++++ b/src/mainboard/dell/snb_ivb_latitude/early_init.c +@@ -11,4 +11,9 @@ void bootblock_mainboard_early_init(void) + | KBC_LPC_EN | FDD_LPC_EN | LPT_LPC_EN + | COMB_LPC_EN | COMA_LPC_EN); + mec5035_early_init(); ++ ++ /* Observed from LPC logs with vendor firmware. Seems to disable ++ * EC-initiated shutdown when the CPU reaches approximately 87 degrees. ++ * The exact meaning of the parameter is currently unknown. */ ++ mec5035_cmd_bf(0x07); + } +-- +2.51.2 + |