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([2a01:e0a:106d:1080:73bc:1eca:d39e:509]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-439abded86esm35075889f8f.6.2026.03.04.12.10.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Mar 2026 12:10:49 -0800 (PST) Message-ID: <8e7cff06-4b6a-4034-9b9a-1d4ae69a9bab@linaro.org> Date: Wed, 4 Mar 2026 21:10:45 +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 From: Neil Armstrong Reply-To: Neil Armstrong Subject: Re: [PATCH RFC 1/2] dt-bindings: display: panel: Add ChipWealth CH13726A AMOLED driver bindings To: Aaron Kling Cc: Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Teguh Sobirin References: <20260222-ch13726a-v1-0-e501d78e105a@gmail.com> <20260222-ch13726a-v1-1-e501d78e105a@gmail.com> <933fd2e0-46ff-4ab8-b98a-554ac46982c5@linaro.org> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 3/4/26 18:56, Aaron Kling wrote: > On Wed, Mar 4, 2026 at 10:32 AM Neil Armstrong > wrote: >> >> On 2/22/26 23:26, Aaron Kling via B4 Relay wrote: >>> From: Aaron Kling >>> >>> The Chip Wealth Technology CH13726A display driver is a single chip >>> solution for AMOLED using MIPI-DSI. This is used for the AYN Thor bottom >>> panel. >>> >>> Signed-off-by: Aaron Kling >>> --- >>> .../display/panel/chipwealth,ch13726a.yaml | 66 ++++++++++++++++++++++ >>> 1 file changed, 66 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/display/panel/chipwealth,ch13726a.yaml b/Documentation/devicetree/bindings/display/panel/chipwealth,ch13726a.yaml >>> new file mode 100644 >>> index 0000000000000000000000000000000000000000..890984b00c341285066176995e6a973c5607cbde >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/display/panel/chipwealth,ch13726a.yaml >>> @@ -0,0 +1,66 @@ >>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >>> +%YAML 1.2 >>> +--- >>> +$id: http://devicetree.org/schemas/display/panel/chipwealth,ch13726a.yaml# >>> +$schema: http://devicetree.org/meta-schemas/core.yaml# >>> + >>> +title: Chip Wealth Technology CH13726A display driver >>> + >>> +maintainers: >>> + - Place Holder >> >> ?? > > Please see my reply on the cover [0]. Sorry my bad, yes add me it's fine > >>> + >>> +description: >>> + Chip Wealth Technology CH13726A is a single-chip solution >>> + for AMOLED connected using a MIPI-DSI video interface. >>> + >>> +allOf: >>> + - $ref: panel-common.yaml# >>> + >>> +properties: >>> + compatible: >>> + const: ayntec,thor-panel-bottom >> >> ??? why not chipwealth,ch13726a ?? > > Because this is a driver chip that supports multiple panels. The > driver code I based on also supports the retroid pocket 5 panel, which > has a different resolution. Similar naming is used in the rocktech > jh057n00900 binding, which is why I picked this compatible. It doesn't work like that, add a compatible per physical device, not by driver. You can add common fallbacks if the panel is the same as another. > >>> + >>> + port: true >>> + reg: >>> + maxItems: 1 >>> + description: DSI virtual channel >>> + >>> + vdd-supply: true >>> + vddio-supply: true >>> + vdd1v2-supply: true >>> + avdd-supply: true >>> + >>> + reset-gpios: true >>> + >>> + rotation: true >>> + >>> +required: >>> + - compatible >>> + - reg >>> + - vdd-supply >>> + - vddio-supply >>> + - vdd1v2-supply >>> + - avdd-supply >>> + - reset-gpios >>> + >>> +additionalProperties: false >>> + >>> +examples: >>> + - | >>> + #include >>> + >>> + dsi { >>> + #address-cells = <1>; >>> + #size-cells = <0>; >>> + panel@0 { >>> + compatible = "ayntec,thor-panel-bottom"; >>> + reg = <0>; >>> + vdd1v2-supply = <&vreg_l11b_1p2>; >>> + vddio-supply = <&vdd_disp_1v8>; >>> + vdd-supply = <&vreg_l13b_3p0>; >>> + avdd-supply = <&vdd_disp2_2v8>; >>> + reset-gpios = <&tlmm 133 GPIO_ACTIVE_HIGH>; >>> + }; >>> + }; >>> + >>> +... >>> >> > > Aaron > > [0] https://lore.kernel.org/dri-devel/20260222-ch13726a-v1-0-e501d78e105a@gmail.com/