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[87.100.249.247]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-59a185d5ee4sm681986e87.17.2025.12.19.04.30.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Dec 2025 04:30:13 -0800 (PST) Date: Fri, 19 Dec 2025 14:30:11 +0200 From: Mikko Rapeli To: Tomi Valkeinen Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Michal Simek , Bill Mills , Ilias Apalodimas Subject: Re: [PATCH 0/2] drm: xlnx: zynqmp_kms: 16 bpp fixes for Xorg startup on AMD KV260 Message-ID: References: <20251205123751.2257694-1-mikko.rapeli@linaro.org> <533168f1-1655-4947-9032-b08463f502d7@ideasonboard.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=us-ascii Content-Disposition: inline In-Reply-To: <533168f1-1655-4947-9032-b08463f502d7@ideasonboard.com> Hi, On Fri, Dec 19, 2025 at 01:59:14PM +0200, Tomi Valkeinen wrote: > Hi Mikko, > > On 05/12/2025 14:37, Mikko Rapeli wrote: > > Hi, > > > > Currently on default yocto images Xorg fails to start on AMD KV260 > > because 24/32 color depth gets detected but does not actually work. > > > > These two patches fix the issue and now 16 bpp gets detected > > and Xorg starts and draws on external HDMI display using > > kernel.org based linux-yocto kernel. > > > > Anatoliy Klymenko (1): > > drm: xlnx: zynqmp_kms: Init fbdev with 16 bit color > > > > Mikko Rapeli (1): > > drm: xlnx: zynqmp_kms: set preferred_depth to 16 bpp > > > > drivers/gpu/drm/xlnx/zynqmp_kms.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > Did you notice the few already sent serieses on the list where the topic > has been discussed? > [PATCH] drm: xlnx: zynqmp_dp: Support DRM_FORMAT_XRGB8888 > [PATCH 0/3] drm: zynqmp: Make the video plane primary Oh I wasn't aware of these. > Or is there something else on KV260 that messes up the 24 bit color? These look very similar and likely fix the X11 startup. I will give them a try. Cheers, -Mikko