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 C60F2BA49 for ; Tue, 7 Mar 2023 18:55:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4512FC4339B; Tue, 7 Mar 2023 18:55:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678215325; bh=wYqADMD4cTHT1W35dsoBIFxITUkwOMKAAmcNYatRO0E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VQYHjRFcYGTMh4d+1WxvK0vk+pkJ9NAwFQNCflkH2o4rpavJ5mLnXNfQXKrhpM6cj wQ1EDibezWq9Mu3ZwH/kB9kpmgHeXDljIPDGSttFr0ExHog4dDQPfhiQGdg0uxv3H7 +2CVP/j5M8YkY/AlwDHAAwZVz1v9Yvh8Qs4pPi9s= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Neil Armstrong , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 5.15 193/567] drm/bridge: lt9611: fix sleep mode setup Date: Tue, 7 Mar 2023 17:58:49 +0100 Message-Id: <20230307165914.302840692@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307165905.838066027@linuxfoundation.org> References: <20230307165905.838066027@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: Dmitry Baryshkov [ Upstream commit ae2d329f104b75a0a78dcaded29fe6283289cdf9 ] On atomic_post_disable the bridge goes to the low power state. However the code disables too much of the chip, so the HPD event is not being detected and delivered to the host. Reduce the power saving in order to get the HPD event. Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge") Reviewed-by: Neil Armstrong Signed-off-by: Dmitry Baryshkov Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-2-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/lontium-lt9611.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index 1dcc28a4d8537..5e5641ac5ea3d 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -446,12 +446,11 @@ static void lt9611_sleep_setup(struct lt9611 *lt9611) { 0x8023, 0x01 }, { 0x8157, 0x03 }, /* set addr pin as output */ { 0x8149, 0x0b }, - { 0x8151, 0x30 }, /* disable IRQ */ + { 0x8102, 0x48 }, /* MIPI Rx power down */ { 0x8123, 0x80 }, { 0x8130, 0x00 }, - { 0x8100, 0x01 }, /* bandgap power down */ - { 0x8101, 0x00 }, /* system clk power down */ + { 0x8011, 0x0a }, }; regmap_multi_reg_write(lt9611->regmap, -- 2.39.2