The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x e40fc1160d491c3bcaf8e940ae0dde0a7c5e8e14 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025082156-maturity-mutilated-6f8b@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From e40fc1160d491c3bcaf8e940ae0dde0a7c5e8e14 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= linux@weissschuh.net Date: Wed, 21 May 2025 16:42:51 +0200 Subject: [PATCH] mfd: cros_ec: Separate charge-control probing from USB-PD MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

The charge-control subsystem in the ChromeOS EC is not strictly tied to its USB-PD subsystem.

Since commit 7613bc0d116a ("mfd: cros_ec: Don't load charger with UCSI") the presence of EC_FEATURE_UCSI_PPM would inhibit the probing of the charge-control driver.

Furthermore recent versions of the EC firmware in Framework laptops hard-disable EC_FEATURE_USB_PD to avoid probing cros-usbpd-charger, which then also breaks cros-charge-control.

Instead use the dedicated EC_FEATURE_CHARGER.

Cc: stable@vger.kernel.org Link: https://github.com/FrameworkComputer/EmbeddedController/commit/1d7bcf1d50137... Fixes: 555b5fcdb844 ("mfd: cros_ec: Register charge control subdevice") Signed-off-by: Thomas Weißschuh linux@weissschuh.net Reviewed-by: Tzung-Bi Shih tzungbi@kernel.org Tested-by: Tom Vincent linux@tlvince.com Link: https://lore.kernel.org/r/20250521-cros-ec-mfd-chctl-probe-v1-1-6ebfe3a6efa7... Signed-off-by: Lee Jones lee@kernel.org

diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c index 9f84a52b48d6..dc80a272726b 100644 --- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -87,7 +87,6 @@ static const struct mfd_cell cros_ec_sensorhub_cells[] = { };

static const struct mfd_cell cros_usbpd_charger_cells[] = { - { .name = "cros-charge-control", }, { .name = "cros-usbpd-charger", }, { .name = "cros-usbpd-logger", }, }; @@ -112,6 +111,10 @@ static const struct mfd_cell cros_ec_ucsi_cells[] = { { .name = "cros_ec_ucsi", }, };

+static const struct mfd_cell cros_ec_charge_control_cells[] = { + { .name = "cros-charge-control", }, +}; + static const struct cros_feature_to_cells cros_subdevices[] = { { .id = EC_FEATURE_CEC, @@ -148,6 +151,11 @@ static const struct cros_feature_to_cells cros_subdevices[] = { .mfd_cells = cros_ec_keyboard_leds_cells, .num_cells = ARRAY_SIZE(cros_ec_keyboard_leds_cells), }, + { + .id = EC_FEATURE_CHARGER, + .mfd_cells = cros_ec_charge_control_cells, + .num_cells = ARRAY_SIZE(cros_ec_charge_control_cells), + }, };

static const struct mfd_cell cros_ec_platform_cells[] = {