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Wed, 29 Nov 2023 00:14:44 -0800 (PST) Message-ID: <555a6820-3e28-4eae-93d8-5cd023326acb@linaro.org> Date: Wed, 29 Nov 2023 09:14:41 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/6] dt-bindings: display: Add yamls for JH7110 display system Content-Language: en-US To: Keith Zhao , "dri-devel@lists.freedesktop.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-riscv@lists.infradead.org" , "linux-media@vger.kernel.org" , "linaro-mm-sig@lists.linaro.org" Cc: David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Emil Renner Berthing , Paul Walmsley , Palmer Dabbelt , Albert Ou , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Philipp Zabel , Sumit Semwal , "christian.koenig@amd.com" , Bjorn Andersson , Heiko Stuebner , Shawn Guo , Jagan Teki , Chris Morgan , Jack Zhu , Shengyang Chen , Changhuang Liang References: <20231025103957.3776-1-keith.zhao@starfivetech.com> <20231025103957.3776-2-keith.zhao@starfivetech.com> <20502c84-c3af-4a60-9f5f-d8cc05743866@starfivetech.com> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzTRLcnp5c3p0b2Yg S296bG93c2tpIDxrcnp5c3p0b2Yua296bG93c2tpQGxpbmFyby5vcmc+wsGUBBMBCgA+FiEE m9B+DgxR+NWWd7dUG5NDfTtBYpsFAmI+BxMCGwMFCRRfreEFCwkIBwIGFQoJCAsCBBYCAwEC HgECF4AACgkQG5NDfTtBYptgbhAAjAGunRoOTduBeC7V6GGOQMYIT5n3OuDSzG1oZyM4kyvO XeodvvYv49/ng473E8ZFhXfrre+c1olbr1A8pnz9vKVQs9JGVa6wwr/6ddH7/yvcaCQnHRPK mnXyP2BViBlyDWQ71UC3N12YCoHE2cVmfrn4JeyK/gHCvcW3hUW4i5rMd5M5WZAeiJj3rvYh v8WMKDJOtZFXxwaYGbvFJNDdvdTHc2x2fGaWwmXMJn2xs1ZyFAeHQvrp49mS6PBQZzcx0XL5 cU9ZjhzOZDn6Apv45/C/lUJvPc3lo/pr5cmlOvPq1AsP6/xRXsEFX/SdvdxJ8w9KtGaxdJuf rpzLQ8Ht+H0lY2On1duYhmro8WglOypHy+TusYrDEry2qDNlc/bApQKtd9uqyDZ+rx8bGxyY qBP6bvsQx5YACI4p8R0J43tSqWwJTP/R5oPRQW2O1Ye1DEcdeyzZfifrQz58aoZrVQq+innR aDwu8qDB5UgmMQ7cjDSeAQABdghq7pqrA4P8lkA7qTG+aw8Z21OoAyZdUNm8NWJoQy8m4nUP gmeeQPRc0vjp5JkYPgTqwf08cluqO6vQuYL2YmwVBIbO7cE7LNGkPDA3RYMu+zPY9UUi/ln5 dcKuEStFZ5eqVyqVoZ9eu3RTCGIXAHe1NcfcMT9HT0DPp3+ieTxFx6RjY3kYTGLOwU0EVUNc NAEQAM2StBhJERQvgPcbCzjokShn0cRA4q2SvCOvOXD+0KapXMRFE+/PZeDyfv4dEKuCqeh0 hihSHlaxTzg3TcqUu54w2xYskG8Fq5tg3gm4kh1Gvh1LijIXX99ABA8eHxOGmLPRIBkXHqJY oHtCvPc6sYKNM9xbp6I4yF56xVLmHGJ61KaWKf5KKWYgA9kfHufbja7qR0c6H79LIsiYqf92 H1HNq1WlQpu/fh4/XAAaV1axHFt/dY/2kU05tLMj8GjeQDz1fHas7augL4argt4e+jum3Nwt yupodQBxncKAUbzwKcDrPqUFmfRbJ7ARw8491xQHZDsP82JRj4cOJX32sBg8nO2N5OsFJOcd 5IE9v6qfllkZDAh1Rb1h6DFYq9dcdPAHl4zOj9EHq99/CpyccOh7SrtWDNFFknCmLpowhct9 5ZnlavBrDbOV0W47gO33WkXMFI4il4y1+Bv89979rVYn8aBohEgET41SpyQz7fMkcaZU+ok/ +HYjC/qfDxT7tjKXqBQEscVODaFicsUkjheOD4BfWEcVUqa+XdUEciwG/SgNyxBZepj41oVq FPSVE+Ni2tNrW/e16b8mgXNngHSnbsr6pAIXZH3qFW+4TKPMGZ2rZ6zITrMip+12jgw4mGjy 5y06JZvA02rZT2k9aa7i9dUUFggaanI09jNGbRA/ABEBAAHCwXwEGAEKACYCGwwWIQSb0H4O DFH41ZZ3t1Qbk0N9O0FimwUCYDzvagUJFF+UtgAKCRAbk0N9O0Fim9JzD/0auoGtUu4mgnna oEEpQEOjgT7l9TVuO3Qa/SeH+E0m55y5Fjpp6ZToc481za3xAcxK/BtIX5Wn1mQ6+szfrJQ6 59y2io437BeuWIRjQniSxHz1kgtFECiV30yHRgOoQlzUea7FgsnuWdstgfWi6LxstswEzxLZ Sj1EqpXYZE4uLjh6dW292sO+j4LEqPYr53hyV4I2LPmptPE9Rb9yCTAbSUlzgjiyyjuXhcwM qf3lzsm02y7Ooq+ERVKiJzlvLd9tSe4jRx6Z6LMXhB21fa5DGs/tHAcUF35hSJrvMJzPT/+u /oVmYDFZkbLlqs2XpWaVCo2jv8+iHxZZ9FL7F6AHFzqEFdqGnJQqmEApiRqH6b4jRBOgJ+cY qc+rJggwMQcJL9F+oDm3wX47nr6jIsEB5ZftdybIzpMZ5V9v45lUwmdnMrSzZVgC4jRGXzsU EViBQt2CopXtHtYfPAO5nAkIvKSNp3jmGxZw4aTc5xoAZBLo0OV+Ezo71pg3AYvq0a3/oGRG KQ06ztUMRrj8eVtpImjsWCd0bDWRaaR4vqhCHvAG9iWXZu4qh3ipie2Y0oSJygcZT7H3UZxq fyYKiqEmRuqsvv6dcbblD8ZLkz1EVZL6djImH5zc5x8qpVxlA0A0i23v5QvN00m6G9NFF0Le D2GYIS41Kv4Isx2dEFh+/Q== In-Reply-To: <20502c84-c3af-4a60-9f5f-d8cc05743866@starfivetech.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on morse.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (morse.vger.email [0.0.0.0]); Wed, 29 Nov 2023 00:14:58 -0800 (PST) On 29/11/2023 04:13, Keith Zhao wrote: > > > On 2023/10/25 20:50, Krzysztof Kozlowski wrote: >> On 25/10/2023 12:39, Keith Zhao wrote: >>> StarFive SoCs JH7110 display system: >> >> A nit, subject: drop second/last, redundant "yamls for". The >> "dt-bindings" prefix is already stating that these are bindings, so >> format is fixed. >> >>> lcd-controller bases verisilicon dc8200 IP, >>> and hdmi bases Innosilicon IP. Add bindings for them. >> >> Please make it a proper sentences, with proper wrapping. >> >>> >>> also update MAINTAINERS for dt-bindings >> >> Not a sentence, but also not really needed.ok I see. >> >>> >>> about this patch, I tested the dtbs_check and dt_binding_check >>> with the result pass. >>> Based on the feedback of the previous version, the corresponding arrangement is made >> >> Not relevant, so not really suitable for commit msg. >> >>> >>> Signed-off-by: Keith Zhao >>> --- >>> .../starfive/starfive,display-subsystem.yaml | 41 +++++++ >>> .../starfive/starfive,jh7110-dc8200.yaml | 109 ++++++++++++++++++ >>> .../starfive/starfive,jh7110-inno-hdmi.yaml | 85 ++++++++++++++ >>> MAINTAINERS | 7 ++ >>> 4 files changed, 242 insertions(+) >>> create mode 100644 Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml >>> create mode 100644 Documentation/devicetree/bindings/display/starfive/starfive,jh7110-dc8200.yaml >>> create mode 100644 Documentation/devicetree/bindings/display/starfive/starfive,jh7110-inno-hdmi.yaml >>> >>> diff --git a/Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml b/Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml >>> new file mode 100644 >>> index 000000000..f45b97b08 >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/display/starfive/starfive,display-subsystem.yaml >>> @@ -0,0 +1,41 @@ >>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >>> +%YAML 1.2 >>> +--- >>> +$id: http://devicetree.org/schemas/display/starfive/starfive,display-subsystem.yaml# >>> +$schema: http://devicetree.org/meta-schemas/core.yaml# >>> + >>> +title: Starfive DRM master device >> >> What is DRM in hardware? I know Digital Rights Management, but then >> subsystem seems wrong. If you mean Linux DRM, then Linux is not a >> hardware, so drop all Linuxisms and describe hardware. > ok , will only keep hardware describe in my next version >> >> >>> + >>> +maintainers: >>> + - Keith Zhao >>> + - ShengYang Chen >>> + >>> +description: >>> + The Starfive DRM master device is a virtual device needed to list all >> >> Virtual device? Then not suitable for bindings, sorry. >> >>> + display controller or other display interface nodes that comprise the >>> + graphics subsystem. >>> + >>> +properties: >>> + compatible: >>> + const: starfive,display-subsystem >>> + >>> + ports: >>> + $ref: /schemas/types.yaml#/definitions/phandle-array >> >> No, ports is not phandle-array. ports is object, always. >> >>> + description: >>> + Should contain a list of phandles pointing to display interface ports >>> + of display controller devices. Display controller definitions as defined >>> + in Documentation/devicetree/bindings/display/starfive/ >>> + starfive,jh7110-dc8200.yaml >> >> Use standard graph ports, not some own, custom property. >> >> Anyway, entire binding should be dropped. You do not need it even. > Hi Krzysztof: > Virtual device is not suitable for bindings, matbe I need associate it with the real hardware. > such as the top clocks & reset , irq , etc. > Currently I configure them in another yaml file. Logically speaking, this is more suitable. > > Can adding the corresponding hardware description change its fate of being deleted? I am not sure if I follow. Bindings and DTS describe the hardware, so if you configure device A clocks in a device B node, then it is not correct. If you add binding for something not being a real device, it is not correct. Feel free to bring proper hardware description, not Linux. This entire binding was written to describe Linux driver, which is not correct. Best regards, Krzysztof