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[144.178.202.138]) by smtp.gmail.com with ESMTPSA id m23-20020a50ef17000000b0055751515a84sm717753eds.51.2024.01.11.07.28.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Jan 2024 07:28:26 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Thu, 11 Jan 2024 16:28:24 +0100 Message-Id: Cc: "Neil Armstrong" , "Jessica Zhang" , "Sam Ravnborg" , "David Airlie" , "Daniel Vetter" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Bjorn Andersson" , "Konrad Dybcio" , "Andy Gross" , , , , , <~postmarketos/upstreaming@lists.sr.ht>, Subject: Re: [PATCH v2 2/4] drm/panel: Add driver for DJN HX83112A LCD panel From: "Luca Weiss" To: "Linus Walleij" X-Mailer: aerc 0.15.2 References: <20240110-fp4-panel-v2-0-8ad11174f65b@fairphone.com> <20240110-fp4-panel-v2-2-8ad11174f65b@fairphone.com> In-Reply-To: On Thu Jan 11, 2024 at 3:57 PM CET, Linus Walleij wrote: > On Wed, Jan 10, 2024 at 4:14=E2=80=AFPM Luca Weiss wrote: > > > Add support for the 2340x1080 LCD DJN panel bundled with a HX83112A > > driver IC, as found on the Fairphone 4 smartphone. > > > > Signed-off-by: Luca Weiss > > This makes it sound like the Himax HX83112A is the driver IC. > > This does not seem to be the case: > https://github.com/HimaxSoftware/HX83112_Android_Driver > > The driver IC seems to be a truly 5p65. Hi Linus, In some internal documentation it says "LCD Driver IC" "HX83112A" and I don't see any reference to Truly 5P65 anywhere. On their website they have this sentence: Himax offers display drivers for mobile handset displays that combine source driver, gate driver, timing controller, frame buffer, and DC to DC circuits into a single chip in various display technologies, such as TFT-LCD, LTPS, In-Cell Touch and AMOLED. https://www.himax.com.tw/products/display-drivers/mobile-handset-applicatio= ns/ While I'm not super well versed in panel driver ICs, this sounds like it should be the one to take the name from? Regards Luca > > If this is right, could you rename the driver file to truly-5p65.c > and all symbols containing hx83112 to truly_5965 or something > that indicate the driver IC instead of the panel? > > My main concern is that the next display using the same IC > need to find the right file to patch. > > Yours, > Linus Walleij