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From: Joey Lu <a0987203069@gmail.com>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: zhengxingda@iscas.ac.cn, maarten.lankhorst@linux.intel.com,
	mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com,
	simona@ffwll.ch, robh@kernel.org, krzk+dt@kernel.org,
	conor+dt@kernel.org, ychuang3@nuvoton.com, schung@nuvoton.com,
	yclu4@nuvoton.com, dri-devel@lists.freedesktop.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 1/5] dt-bindings: display: verisilicon,dc: generalize for single-output variants
Date: Mon, 8 Jun 2026 17:44:26 +0800	[thread overview]
Message-ID: <28292e35-f41c-4719-a5e0-cac4ab3884f2@gmail.com> (raw)
In-Reply-To: <20260608-baboon-of-theoretical-stamina-6db63f@quoll>


On 6/8/2026 4:02 PM, Krzysztof Kozlowski wrote:
> On Mon, Jun 08, 2026 at 10:32:33AM +0800, Joey Lu wrote:
>> The existing schema hard-codes the five-clock/three-reset/dual-port
>> topology of the DC8200 IP block, preventing reuse for single-output
>> variants such as the Verisilicon DCUltraLite used in the Nuvoton MA35D1
>> SoC.
>>
>> Rework the schema so that variant-specific constraints are expressed via
>> allOf/if blocks:
>>
>> - Add nuvoton,ma35d1-dcu to the SoC-specific compatible enum.  The
>>    generic verisilicon,dc fallback remains the driver-binding string.
>> - Relax the top-level clocks/resets definitions to minItems ranges so
>>    the base schema accepts both variants.
>> - Keep ports in the global required list and keep additionalProperties
>>    tightened to unevaluatedProperties.
>> - Add an allOf/if block for thead,th1520-dc8200: five-clock (core, axi,
>>    ahb, pix0, pix1), three-reset (core, axi, ahb).
>> - Add an allOf/if block for nuvoton,ma35d1-dcu: two-clock (core, pix0),
>>    one-reset (core).
>> - Fix a stray space in the port@0 description.
>> - Add a DT example for the Nuvoton MA35D1 DCU Lite using ports/port@0.
> Difference in clocks and resets does not need a new new example.
>
> Best regards,
> Krzysztof
Understood. I will remove the second example for nuvoton,ma35d1-dcu from 
the binding.


  reply	other threads:[~2026-06-08  9:44 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-08  2:32 [PATCH v3 0/5] drm/verisilicon: add Nuvoton MA35D1 DCU Lite support Joey Lu
2026-06-08  2:32 ` [PATCH v3 1/5] dt-bindings: display: verisilicon,dc: generalize for single-output variants Joey Lu
2026-06-08  6:32   ` Icenowy Zheng
2026-06-08  9:42     ` Joey Lu
2026-06-08  8:00   ` Krzysztof Kozlowski
2026-06-08  9:44     ` Joey Lu
2026-06-08  8:02   ` Krzysztof Kozlowski
2026-06-08  9:44     ` Joey Lu [this message]
2026-06-08  2:32 ` [PATCH v3 2/5] drm/verisilicon: add register-level macros for DCU Lite Joey Lu
2026-06-08  2:32 ` [PATCH v3 3/5] drm/verisilicon: introduce per-variant hardware ops table Joey Lu
2026-06-08  6:24   ` Icenowy Zheng
2026-06-08  9:45     ` Joey Lu
2026-06-08 10:06       ` Icenowy Zheng
2026-06-08 10:35         ` Joey Lu
2026-06-08  2:32 ` [PATCH v3 4/5] drm/verisilicon: add Nuvoton MA35D1 DCU Lite display controller support Joey Lu
2026-06-08  6:26   ` Icenowy Zheng
2026-06-08  9:46     ` Joey Lu
2026-06-08  2:32 ` [PATCH v3 5/5] drm/verisilicon: add DCUltraLite chip identity to HWDB Joey Lu

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