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Tue, 13 Feb 2024 09:52:38 +0100 Message-ID: Date: Tue, 13 Feb 2024 09:52:36 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 14/14] ARM: dts: imx6ull-uti260b: Add board To: Sebastian Reichel Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Fabio Estevam , Pengutronix Kernel Team , NXP Linux Team , Dong Aisheng , Linus Walleij , Dmitry Torokhov , Mark Brown , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240210012114.489102-1-sre@kernel.org> <20240210012114.489102-15-sre@kernel.org> <56eb2fnpmaya5rwfk5jvluvsidokzpoujeatihgrbxlytbzx5x@ozco7pbgkugp> Content-Language: en-US From: Stefan Wahren In-Reply-To: <56eb2fnpmaya5rwfk5jvluvsidokzpoujeatihgrbxlytbzx5x@ozco7pbgkugp> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:QwGYrtJOh2GSob57qG1BTL4524eNR06439bHtY0/90JfT5NIu84 vxLrtONRTylt/pdpbEkXnOBuFv/qRTzSMEHmzzUQOpK+y5jNp8Jr2EnO0dnruk++dNsakfx SbLvrVbpLkrnM4PBLM1YtyFNDZrP5hHqkU/oiXIOCdmUFMiow74S0lHopY49FriUKY2+jrx aoR2ACHBxTPg+2nR4t5hA== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:hzP5LxJpaj0=;JcejgMcwxeIaQkcltr7ilZz32QG UdjUQAkloUWOCgUaIJPXHfppTNiwOkbZtGjjy+3uz40QAv2KuFeKhANogM7kJXfwjqgSYTwX2 yJ0OnmJdjc5o0koikbirLv0qUoPVbGNX9KI5sdC1WMw9fUba5+Vyy+rtzUJKw3FveMF1RSLVS JaniyBhGY0YJIjXdZa6fh4qlgM3pmolG8buFz9KIQ0fGLGmfcqtMFWoq9d3ZwzdXwrc6mCn8c vcXbhiwMIM50ZW0INa42ygxNJEMkzrUeiuYZnnRvW/AYBhEuheS8KHdknPjxUXLLoWO1a2iWc BmSqnpKiOg1UIWYQNtkspb1GaxF77s+xILaO3tm5E/YVIGeNM2+tsXdqzPU5uhuddOLoHIiUo KkRbIaTRhLWKj6y4+/4d7oamEKSGsFEEKOOk2JeOf7wJeb22JsYwlwfCxSxs7uCVDx+42FS7w bdMrMEDfb7kjesJWPW4I9HNL34BloUWYRLJER5UmMB4A5wy83zy3QBZ9U9wJRoh1xQD5EFDtg 1UJrevt652XGZ2VNAalb+hxSccZPLQ6o7ylMWWtcEdHiVghu6KmeB+j+eh+lbT8s/9Q1bXbHG vXzU/u0Bk+BsoxID6zeNsWijsWzfRI3zjWD+b1J9k/2kYK6rkYyJVsi7hQLUM+JuJlsuNv2c6 3rskaLXA0PRW/MiBPB79Bpa4a7Ku035md+jEyIhmyrcnqPj/pLoHCfiCYlAyNC3wjcHGEgoZ0 9ln2+M84j8KiJYraAs21mDxZW3uHzNZt6cuatdnkfaLkHXBAjp7yJwu55ji18Hq+A8B8IqfdA 0gNlYlglsPCgaO2jSNPxt5+AgYO3EUA5Pnsb7vNPWBVzE= >>> +&ecspi3 { >>> + cs-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>; >>> + pinctrl-names = "default"; >>> + pinctrl-0 = <&mux_spi3>, <&mux_spi3_cs>; >>> + status = "okay"; >>> + >>> + panel@0 { >>> + compatible = "inanbo,t28cp45tn89-v17"; >>> + reg = <0>; >>> + backlight = <&panel_backlight>; >>> + power-supply = <®_vsd>; >>> + spi-cpha; >>> + spi-cpol; >>> + spi-max-frequency = <100000>; >> This seems slow to me. Is this a limitation of the display? > I just used something slow, which should definitely work. I will try > to increase to 1MHz. Note, that the display is not driven via SPI. > SPI is just used for the configuration. Thanks for clarification. Yes, 1 MHz would be better. > > Thanks for the review, > > -- Sebastian