From nobody Tue Dec 2 02:04:59 2025 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 9E7E0347BC6; Fri, 21 Nov 2025 11:17:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763723839; cv=none; b=aZbVhlWIxgMBD8bNbvBWaSJABGTAp4OWeHGktonxhYjwN46YVV6CXegngrOY/6OOZoGHo8BOl7hi6BIeNUZ3de/0a3ifodiygTpAcN1Cvok/CQAT1TWoDFsG2JEBTwJXeozRNh11EqYioI26JyM+EFGG/4+rEXOuQ96k4ljouYc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763723839; c=relaxed/simple; bh=CwepC8yqeaRnnicwyhA3IjDb1SuVWrSSGjrDhmIJNMs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=bRQUhx72nJOJ13RZkPDQ00XwImZMaq5n90tJdZuQgImtm9gvC6hWHLmx3zcL85NVeQofLZhHgJIZfdGpEXX0RlV6I9G3aK4qKTwfIwLNkqsddPuRwvZH9+t3ilKlU29zdEEOk12Dnc7fAIQoYovSCHR+l3L5f5Phj/rpcjIM0Nc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=J7WyscAI; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="J7WyscAI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1763723832; bh=CwepC8yqeaRnnicwyhA3IjDb1SuVWrSSGjrDhmIJNMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J7WyscAIaAh0iVhvFbZjMLc9LETtu++q9rw/nAamzP5vYsww8W/Y7HRT9NnTX7i1+ UjtY6eQGAt1Gzpwtxh4NOAQPjBcRZ5j2m5dfQr6LOjWgK0QQKi5EvoI1CL4XyQYwBx JXiSmdPxlig0GHDUkbi9uxuZ4tnsxAPX2z8E+T+Tz/UFRiaMlzHllXaYucASzr4Rg0 rJOO/0aZ5pKmIq44Lb49rxkGjOkXieNIYldyAnlGo5FUKCkCwlDLQetZgsOJB4MDIa 71CBZKfbfByu2WTNcOBVIeg/AQwRvL5mo0W/Sj35FCU7vf3f9E/wMomAjZm77DLYJ5 rTyzngC3Z2qoA== Received: from laura.lan (unknown [IPv6:2001:b07:646b:e2:c4bf:9969:6e1c:dc69]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: laura.nao) by bali.collaboradmins.com (Postfix) with ESMTPSA id 7CAB417E35CB; Fri, 21 Nov 2025 12:17:11 +0100 (CET) From: Laura Nao To: srini@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com Cc: nfraprado@collabora.com, arnd@arndb.de, colin.i.king@gmail.com, u.kleine-koenig@baylibre.com, andrew-ct.chen@mediatek.com, lala.lin@mediatek.com, bchihi@baylibre.com, frank-w@public-files.de, wenst@chromium.org, fshao@chromium.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel@collabora.com, Laura Nao Subject: [PATCH v4 7/9] thermal/drivers/mediatek/lvts: Support MSR offset for 16-bit calibration data Date: Fri, 21 Nov 2025 12:16:40 +0100 Message-Id: <20251121-mt8196-lvts-v4-v4-7-357f955a3176@collabora.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20251121-mt8196-lvts-v4-v4-0-357f955a3176@collabora.com> References: <20251121-mt8196-lvts-v4-v4-0-357f955a3176@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable On MT8196/MT6991, per-sensor calibration data read from eFuses is 16-bit. When the LVTS controller operates in 16-bit mode, a fixed offset must be added to MSR values during post-processing to obtain correct temperature readings. Introduce a new msr_offset field in lvts_data, program the respective register and apply the offset to the calibration data read from eFuses. Reviewed-by: AngeloGioacchino Del Regno Tested-by: AngeloGioacchino Del Regno Tested-by: Frank Wunderlich Signed-off-by: Laura Nao --- drivers/thermal/mediatek/lvts_thermal.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/medi= atek/lvts_thermal.c index d1bfbcb1a7d0..6558994cbee0 100644 --- a/drivers/thermal/mediatek/lvts_thermal.c +++ b/drivers/thermal/mediatek/lvts_thermal.c @@ -44,6 +44,7 @@ #define LVTS_EDATA01(__base) (__base + 0x0058) #define LVTS_EDATA02(__base) (__base + 0x005C) #define LVTS_EDATA03(__base) (__base + 0x0060) +#define LVTS_MSROFT(__base) (__base + 0x006C) #define LVTS_ATP0(__base) (__base + 0x0070) #define LVTS_ATP1(__base) (__base + 0x0074) #define LVTS_ATP2(__base) (__base + 0x0078) @@ -150,6 +151,7 @@ struct lvts_data { int temp_offset; int gt_calib_bit_offset; unsigned int def_calibration; + u16 msr_offset; }; =20 struct lvts_sensor { @@ -218,6 +220,7 @@ static const struct debugfs_reg32 lvts_regs[] =3D { LVTS_DEBUG_FS_REGS(LVTS_EDATA01), LVTS_DEBUG_FS_REGS(LVTS_EDATA02), LVTS_DEBUG_FS_REGS(LVTS_EDATA03), + LVTS_DEBUG_FS_REGS(LVTS_MSROFT), LVTS_DEBUG_FS_REGS(LVTS_ATP0), LVTS_DEBUG_FS_REGS(LVTS_ATP1), LVTS_DEBUG_FS_REGS(LVTS_ATP2), @@ -790,6 +793,8 @@ static int lvts_calibration_init(struct device *dev, st= ruct lvts_ctrl *lvts_ctrl =20 if (gt) { lvts_ctrl->calibration[i] =3D calib; + if (lvts_ctrl->lvts_data->msr_offset) + lvts_ctrl->calibration[i] +=3D lvts_ctrl->lvts_data->msr_offset; } else if (lvts_ctrl->lvts_data->def_calibration) { lvts_ctrl->calibration[i] =3D lvts_ctrl->lvts_data->def_calibration; } else { @@ -1097,6 +1102,17 @@ static int lvts_ctrl_calibrate(struct device *dev, s= truct lvts_ctrl *lvts_ctrl) for (i =3D 0; i < LVTS_SENSOR_MAX; i++) writel(lvts_ctrl->calibration[i], lvts_edata[i]); =20 + /* LVTS_MSROFT : Constant offset applied to MSR values + * for post-processing + * + * Bits: + * + * 20-0 : Constant data added to MSR values + */ + if (lvts_ctrl->lvts_data->msr_offset) + writel(lvts_ctrl->lvts_data->msr_offset, + LVTS_MSROFT(lvts_ctrl->base)); + return 0; } =20 --=20 2.39.5