From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A94153C7559; Sat, 28 Feb 2026 17:39:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300377; cv=none; b=dLTZ18r9COC8bSRu4Q7ydi4z3JoWXiyi+ZSSyFDYE4WgEGZi7JSAlQ0+oV4sDTuU5R0tVFLgw2CTDslV8QI8YMcUFoLTTbWDF2nICU0D6Mub2JYT4DgbjJhO+Kf7bb5dknTOUJ/8/immWyUwN6xKRvqthScV2UxL+k5F+V3usWc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300377; c=relaxed/simple; bh=LRvyp1T7495ebwokwEb5xk3tnpAB4BOXNi8MmubQZjQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LloOGc0IM32wS4xkhPG8rjOefKQICYDooXCmgbAAvVUwlDfyIMy/lgQn05X4BdbSHOPbIOAJ1Lm3ZEDxuc5xo6+kmBrR9ZJvMwWGmd4A4Blrju9RJPwhH7glx/PDF9YCv0jRz5wD5zex6ozhFGxCVPwQyy7YMZcUKz3aakpHpU4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=I9PAN+dn; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="I9PAN+dn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3307C116D0; Sat, 28 Feb 2026 17:39:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300377; bh=LRvyp1T7495ebwokwEb5xk3tnpAB4BOXNi8MmubQZjQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I9PAN+dnhNDBuHO9gcln1jTPn3RqLBg8oYdJg2Va5l1Mn7OVabpqy7E7it02iqA92 kNszaOodf+3gtaZeaKOhFXng1XZI9x/h1+3ARwEC+iAb1DhINeIWjXrviJxvT0YRGh qC1r3VGRCH+gNdMmUDrBTt00CfG8kci9ImNyPowwz2f+4Fk296tnBTnDM6fjqLlMLC WpGlDT6NKWHcw6uB7CNlUY9XtKpPVr5oiwCLJTTPj4NT/2nus/bcb/5asQFBbjPPtC OswjE2gdz2i6+3fhmD6UFOmZBGXDQQIrztw0ZwpOuMfSiyXk64nNeEgyfWXcbc7JjM 2vWIYOp3qb2HQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yauhen Kharuzhy , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 6.19 413/844] ACPI: x86: Force enabling of PWM2 on the Yogabook YB1-X90 Date: Sat, 28 Feb 2026 12:25:26 -0500 Message-ID: <20260228173244.1509663-414-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Yauhen Kharuzhy [ Upstream commit a8c975302868c716afef0f50467bebbd069a35b8 ] The PWM2 on YB1-X90 tablets is used for keyboard backlight control but it is disabled in the ACPI DSDT table. Add it to the override_status_ids list to allow keyboard function control driver (drivers/platform/x86/lenovo/yogabook.c) to use it. Signed-off-by: Yauhen Kharuzhy Link: https://patch.msgid.link/20260211222242.4101162-1-jekhor@gmail.com Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/x86/utils.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index 4ee30c2897a2b..418951639f511 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -81,6 +81,18 @@ static const struct override_status_id override_status_ids[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"), }), + /* + * Lenovo Yoga Book uses PWM2 for touch keyboard backlight control. + * It needs to be enabled only for the Android device version (YB1-X90* + * aka YETI-11); the Windows version (YB1-X91*) uses ACPI control + * methods. + */ + PRESENT_ENTRY_HID("80862289", "2", INTEL_ATOM_AIRMONT, { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"), + DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"), + }), + /* * The INT0002 device is necessary to clear wakeup interrupt sources * on Cherry Trail devices, without it we get nobody cared IRQ msgs. -- 2.51.0