From nobody Wed Feb 11 00:59:40 2026 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 404BE32570A for ; Mon, 9 Feb 2026 09:08:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770628088; cv=none; b=jlO/1TULSh5xO3GtwmpgDS8bsm2+fAkwdLY120P7t6c4RVM1RcsR5mCWwBQEfKYZOWnz04Hh+wMm9BahwgUH6IfxKi7ChYrK30dwqq/v1WQMXA705v3jD3UPfh6FOa/P61Gm32vBltY/2hatdIDiaoTNtKExEh7h40s/se8nfdY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770628088; c=relaxed/simple; bh=11t42fUEMAiTS2U2w9xwARaMKhdG86U5sAe0oXs9++4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=fTZR9OyQjbqE+qyaogetIf1rmuHyFfiYbtW9sbW5PGvPwyLroaVKvgFJT5BEU87ANMHiC8cTdn1F0IgN9U9EIaIuQ/4GegqXU2yn/f8pRBXFs/HbwmhI/R4oDdLdxMjIZ5EbqRqf1U1sOopz+aOp5yyKrmMHYMY85GXHmuLgGL8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=huaqin.corp-partner.google.com; spf=pass smtp.mailfrom=huaqin.corp-partner.google.com; dkim=pass (2048-bit key) header.d=huaqin-corp-partner-google-com.20230601.gappssmtp.com header.i=@huaqin-corp-partner-google-com.20230601.gappssmtp.com header.b=v37yMiYR; arc=none smtp.client-ip=209.85.214.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=huaqin.corp-partner.google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaqin.corp-partner.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=huaqin-corp-partner-google-com.20230601.gappssmtp.com header.i=@huaqin-corp-partner-google-com.20230601.gappssmtp.com header.b="v37yMiYR" Received: by mail-pl1-f176.google.com with SMTP id d9443c01a7336-2a7bced39cfso42258415ad.1 for ; Mon, 09 Feb 2026 01:08:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=huaqin-corp-partner-google-com.20230601.gappssmtp.com; s=20230601; t=1770628087; x=1771232887; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=uzRq34MjMHjmNuJekfYZ0C5Yepr0yqm/km8XPEg6KcA=; b=v37yMiYRCslgKRJxq034h2RL1uRwn2VMw1AW/FvG4yyX9cwcMLS7shPtPJfipNrife gKtikUIKOc6pLbMDUqh+K2++GaYJx+C3oYxz3xIYQGTVwsXJNHdplJZYopmBk89AWsGV eb6N4rq1pX/afokqbdmrIHr4W027VnH/EcHSvrnVjndqG1LWa/3kEJBfJT87NACqAkeB cGrE+PRCxYMizfN4IxP1Go/xiZ1QyJ6nUlX7Z1MakLuMs19m8wXWwsf7U12n1hG9wx4q ELo0XmGYPmg9Dnefv0d/uA/wN2MTWrASc2UkwES5lup7r81DWLpLaJZoXobPIUm8PgbW jdFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770628087; x=1771232887; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=uzRq34MjMHjmNuJekfYZ0C5Yepr0yqm/km8XPEg6KcA=; b=OlXrTAZ09g+9+rF6s0ax+xh3mnPMtZgDDrxbeSrbqKQAyp8Jl9nEj+LVooLAeA7Pc2 iMRr2/yhfGQq8Bz4FEOAqX+xPuy1Xhos9y/4mOkGHkIq3tQciJ9LIhHaB7s5BJDP+o3J MZZNBnF6BxGChUTzq+zADjX2/+Xnk/BB11uOrj4i7KMhEejt0UjFi+Rqnk/fvCOgQ90C DfIzUin1Nt7YQ7QeXVpQNCHSBVASNdi2HFD7gJbkXaYjt3m5XMLJp2L/Z4Su4L4DWx/Q 2LbZ8ry0giQ5ayvXrRzmDgbY7BoXskQMjpI+TVIPQmgAECMzNUpm3jcPgUND+7+V3c9J kQ5Q== X-Forwarded-Encrypted: i=1; AJvYcCUZRWe6nz1Z80rP/tPLLCgQw/1uso9DM4kicwXcf39OtxKopzmQodcxlh46NQbpR51NfxYXYU5DgsFPoNM=@vger.kernel.org X-Gm-Message-State: AOJu0YzwLWl57ixvlY3xl7y3O58UwLB0+Z7fLc3CGinqlSADh93p+Ldt Iv0TJQ7ZtrGOXAu1oVyha68DLZStnLeDtipz5BcuKQtx+bhAG5T/xL12MEmsNGG8kLqBITYsbUQ Yf6VYKwM= X-Gm-Gg: AZuq6aLTkWURW/d8ggyWsHPUTa3GYU01zv+A7ek2Tu38kZpZ0n6giiSrgYXDjrhNbGe suzJf1P8dhkxpLBVHehWuwBe4Uo0c0AnFMG8XbcmeT4iidQEywgjHVSwPPQ/ilgTKi97cWo6kVi K77YeZDDvHYqTfasmEckw6nLgiVyauk87giPTRlZmnZEKIx+5ufUGFQNDBq/LbsrxOjUo6hHhsn nO6TEkITXptQrOyw9808UKmkL3/7Ao0AQR3rBT+XoGc4d1Dc4oVPYJl42nCl927da4Uwm4OXxZA S9/comS4zJ1USVsW5wFCjXpwdq/wY04k+2x4hsu7+ENnYMAvRmgkdCkDsicdYHPcqg5u4VdgAmj WQjvl9qNzaHw26BE9213j4i2DNZr5oW94eZia5FRhQgR8XnSAFHy7bSDBiXxkUXXac25vUY4Tza 49bf0RQfic22Co5+aayP9SozeGzx5/99v1XHRJd7PbeaFoZH9GKZMv881gWg== X-Received: by 2002:a17:902:e5c3:b0:2aa:daf9:697e with SMTP id d9443c01a7336-2aadaf9706bmr45455185ad.48.1770628087650; Mon, 09 Feb 2026 01:08:07 -0800 (PST) Received: from dgp100339560-01.huaqin.com ([103.117.77.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a95220c4e9sm101132815ad.83.2026.02.09.01.08.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Feb 2026 01:08:07 -0800 (PST) From: Langyan Ye To: neil.armstrong@linaro.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Langyan Ye Subject: [PATCH] drm/panel: ilitek-ili9882t: Fine-tune HFP for tianma,tl121bvms07-00 Date: Mon, 9 Feb 2026 17:07:59 +0800 Message-Id: <20260209090759.3952404-1-yelangyan@huaqin.corp-partner.google.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The measured refresh rate is around 120.4Hz, which does not meet the requirements of the stylus and causes it to malfunction. After the adjustment, the refresh rate is measured at 120Hz, which meets the requirements for proper stylus operation. Signed-off-by: Langyan Ye --- drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/dr= m/panel/panel-ilitek-ili9882t.c index 370424ddfc80..6f9d4a4198a9 100644 --- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c @@ -689,9 +689,9 @@ static const struct drm_display_mode starry_ili9882t_de= fault_mode =3D { static const struct drm_display_mode tianma_il79900a_default_mode =3D { .clock =3D 543850, .hdisplay =3D 1600, - .hsync_start =3D 1600 + 20, - .hsync_end =3D 1600 + 20 + 2, - .htotal =3D 1600 + 20 + 2 + 20, + .hsync_start =3D 1600 + 18, + .hsync_end =3D 1600 + 18 + 2, + .htotal =3D 1600 + 18 + 2 + 20, .vdisplay =3D 2560, .vsync_start =3D 2560 + 62, .vsync_end =3D 2560 + 62 + 2, --=20 2.34.1