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[213.215.163.27]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48893f39027sm365288315e9.2.2026.04.07.05.52.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Apr 2026 05:52:01 -0700 (PDT) From: Riccardo Mereu To: dmitry.baryshkov@oss.qualcomm.com Cc: airlied@gmail.com, brgl@kernel.org, broonie@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, jagan@edgeble.ai, javierm@redhat.com, jesszhan0024@gmail.com, krzk+dt@kernel.org, lgirdwood@gmail.com, linusw@kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, megi@xff.cz, mripard@kernel.org, neil.armstrong@linaro.org, robh@kernel.org, simona@ffwll.ch, tzimmermann@suse.de, yangcong5@huaqin.corp-partner.google.com, Riccardo Mereu Subject: Re: [PATCH 13/19] drm/panel: jadard-jd9365da-h3: set prepare_prev_first Date: Tue, 7 Apr 2026 14:51:59 +0200 Message-ID: <20260407125159.282144-1-r.mereu.kernel@arduino.cc> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260401-waveshare-dsi-touch-v1-13-5e9119b5a014@oss.qualcomm.com> References: <20260401-waveshare-dsi-touch-v1-13-5e9119b5a014@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, 01 Apr 2026 10:26:32 +0300 Dmitry Baryshkov wrote: >From: Dmitry Baryshkov >Sending DSI commands from the prepare() callback requires DSI link to be >up at that point. For DSI hosts is guaranteed only if the panel driver >sets the .prepare_prev_first flag. Set it to let these panels work with >the DSI hosts which don't power on the link in their .mode_set callback. > >Signed-off-by: Dmitry Baryshkov Tested-by: Riccardo Mereu