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 6836B8F5D for ; Sun, 16 Jul 2023 20:37:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8FE4AC433C8; Sun, 16 Jul 2023 20:37:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689539828; bh=gq4/+l8k/WUMkKmOcnpc+My5IeRJU1SJXIgHezpCJKk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P2+gUPfa9Qy1qq+GkaonDHJBNRSKmHTm71KUQX3Lz+g+lz9vininYO4QvtE8wbzgs 1yYrE+8SjcQm20XIlWj8yGTT+TA9pK8+Q2Asknb+3WmRm9SRITUYz/SUXpsfbXkyK5 F+6iUPK08FpOUhfmDpMB2y1HIA9QGD2rt1HGItwc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Francesco Dolcini , Robert Foss , Sasha Levin Subject: [PATCH 6.1 147/591] drm/bridge: tc358768: always enable HS video mode Date: Sun, 16 Jul 2023 21:44:46 +0200 Message-ID: <20230716194927.674346537@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194923.861634455@linuxfoundation.org> References: <20230716194923.861634455@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Francesco Dolcini [ Upstream commit 75a8aeac2573ab258c53676eba9b3796ea691988 ] Always enable HS video mode setting the TXMD bit, without this change no video output is present with DSI sinks that are setting MIPI_DSI_MODE_LPM flag (tested with LT8912B DSI-HDMI bridge). Previously the driver was enabling HS mode only when the DSI sink was not explicitly setting the MIPI_DSI_MODE_LPM, however this is not correct. The MIPI_DSI_MODE_LPM is supposed to indicate that the sink is willing to receive data in low power mode, however clearing the TC358768_DSI_CONTROL_TXMD bit will make the TC358768 send video in LP mode that is not the intended behavior. Fixes: ff1ca6397b1d ("drm/bridge: Add tc358768 driver") Signed-off-by: Francesco Dolcini Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20230427142934.55435-2-francesco@dolcini.it Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/tc358768.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c index 4c4b77ce8aba3..23a7a1206e900 100644 --- a/drivers/gpu/drm/bridge/tc358768.c +++ b/drivers/gpu/drm/bridge/tc358768.c @@ -867,8 +867,7 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge) val = TC358768_DSI_CONFW_MODE_SET | TC358768_DSI_CONFW_ADDR_DSI_CONTROL; val |= (dsi_dev->lanes - 1) << 1; - if (!(dsi_dev->mode_flags & MIPI_DSI_MODE_LPM)) - val |= TC358768_DSI_CONTROL_TXMD; + val |= TC358768_DSI_CONTROL_TXMD; if (!(mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)) val |= TC358768_DSI_CONTROL_HSCKMD; -- 2.39.2