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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gn8uw-0003NU-9Q; Fri, 25 Jan 2019 21:21:38 +0000 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gn8us-0003Mq-M9 for linux-arm-kernel@lists.infradead.org; Fri, 25 Jan 2019 21:21:37 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id 55484207B2; Fri, 25 Jan 2019 22:21:32 +0100 (CET) Received: from localhost (lfbn-1-10718-76.w90-89.abo.wanadoo.fr [90.89.68.76]) by mail.bootlin.com (Postfix) with ESMTPSA id 113C620397; Fri, 25 Jan 2019 22:21:32 +0100 (CET) Date: Fri, 25 Jan 2019 22:21:32 +0100 From: Maxime Ripard To: Jagan Teki Subject: Re: [PATCH v5 07/17] drm/sun4i: sun6i_mipi_dsi: Refactor vertical video start delay Message-ID: <20190125212132.ea2iq6tsgyawkemx@flea> References: <20190108085829.clianbtjovu3oieq@flea> <20190112164319.whr7gwvl4oux5svz@flea> <20190116191756.ajzzaga43srk77dk@flea> <20190122111118.db7bqppop4basxd7@flea> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190125_132135_004385_CE264643 X-CRM114-Status: GOOD ( 21.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Michael Turquette , linux-sunxi , linux-kernel , dri-devel , Chen-Yu Tsai , Michael Trimarchi , linux-amarula@amarulasolutions.com, linux-clk , linux-arm-kernel Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jan 22, 2019 at 05:21:08PM +0530, Jagan Teki wrote: > On Tue, Jan 22, 2019 at 4:41 PM Maxime Ripard wrote: > > > > On Fri, Jan 18, 2019 at 09:14:19PM +0530, Jagan Teki wrote: > > > On Thu, Jan 17, 2019 at 10:02 AM Jagan Teki wrote: > > > > > > > > On Thu, Jan 17, 2019 at 12:48 AM Maxime Ripard > > > > wrote: > > > > > > > > > > On Sun, Jan 13, 2019 at 01:07:41AM +0530, Jagan Teki wrote: > > > > > > > > > > > Again, I cannot help you without the datasheet for the panels you're > > > > > > > > > > > trying to submit. > > > > > > > > > > > > > > > > > > > > The panel bound with Sitronix ST7701 IC > > > > > > > > > > http://www.startek-lcd.com/res/starteklcd/pdres/201705/20170512144242904.pdf > > > > > > > > > > > > > > > > > > It's the controller, not the panel > > > > > > > > > > > > > > > > As I said before, the datasheet of that panel doesn't have any > > > > > > > > information except electrical characteristics and used IC which is > > > > > > > > ST7701. > > > > > > > > > > > > > > > > I have one more panel, which is from Bananapi, S070WV20-CT16 ICN621 > > > > > > > > please find the attachment for the same. > > > > > > > > > > > > > > > > Here is some more details of the same. > > > > > > > > > > > > > > > > https://github.com/yesnoandor/x300/blob/master/kernel/arch/arm/boot/dts/erobbing/x300/x300.dtsi#L81 > > > > > > > > https://github.com/wxzed/Raspberry_5MIPI_Display/blob/master/I2C_Slave/USER/main.c#L15 > > > > > > > > > > > > > > > > https://github.com/eliot-shao/qcom/blob/master/icn6211_cxn0102/kernel/drivers/video/msm/mdss/mdss_i2c_interface.c#L152 > > > > > > > > matches timings for > > > > > > > > https://github.com/eliot-shao/qcom/blob/master/icn6211_cxn0102/kernel/arch/arm/boot/dts/qcom/dsi-mipi-2-rgb_1280p_video.dtsi#L20 > > > > > > > > > > > > > > > > https://github.com/zestroly/micromat/blob/master/test/raspberry/ICN6211.cpp#L169 > > > > > > > > > > > > > > Where did you get the timings from then? > > > > > > > > > > > > You mean drm_mode timings, the same panel with RGB available in > > > > > > panel-simple[1], and dsi driver in Mailing list[2] and actual DSI > > > > > > sequence commands from BSP[3] > > > > > > > > > > > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/panel/panel-simple.c?id=7ad8b41cd8f5c2842646d01cdd576663caee04a7 > > > > > > [2] https://patchwork.kernel.org/patch/10680331/ > > > > > > [3] https://github.com/BPI-SINOVOIP/BPI-M64-bsp/blob/master/linux-sunxi/drivers/video/sunxi/disp2/disp/lcd/S070WV20_MIPI_RGB.c > > > > > > > > > > So you had no reliable source for the timings then? How do you know if > > > > > all your patches that are timing related are right then? > > > > > > > > I don't understand your point, or may be I confused with many links > > > > that I attached in previous mail. > > > > > > > > 1. Patch for same panel timings are already in Mainline that was > > > > tested on one of the board. [1] > > > > 2. Driver from AW, released bsp from BPI-M64-bsp [3] > > > > > > > > Do you think the above two points are not valid sources? > > > > > > fyi, the panel datasheet attached in above mail has timing information. > > > > Do you have a page number? > > Page 4 > 5.2 Interface Timings Which datasheet are we talking about here? The only one I've seen is the Sitronix IC's and the page 4 is the summary. Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel