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Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by DBAPR04MB7446.eurprd04.prod.outlook.com (2603:10a6:10:1aa::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7828.21; Wed, 31 Jul 2024 05:53:24 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::d1ce:ea15:6648:6f90]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::d1ce:ea15:6648:6f90%2]) with mapi id 15.20.7807.026; Wed, 31 Jul 2024 05:53:24 +0000 Message-ID: <887b1baa-6a71-4a1b-85c1-7b3b0abbccff@nxp.com> Date: Wed, 31 Jul 2024 13:53:52 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 07/16] drm/imx: Add i.MX8qxp Display Controller pixel engine To: Krzysztof Kozlowski , Dmitry Baryshkov Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, tglx@linutronix.de, vkoul@kernel.org, kishon@kernel.org, aisheng.dong@nxp.com, agx@sigxcpu.org, francesco@dolcini.it, frank.li@nxp.com References: <20240712093243.2108456-1-victor.liu@nxp.com> <20240712093243.2108456-8-victor.liu@nxp.com> <107d89b9-e7b8-4613-bc07-9af7b52c2b8a@nxp.com> <0e7a8d52-6556-4531-882f-73513f99259b@kernel.org> <81afd7ef-c4a6-49e8-b232-8007a25aaf51@nxp.com> From: Liu Ying Content-Language: en-US In-Reply-To: Content-Type: text/plain; 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Add drivers for >>>>>> ConstFrame, ExtDst, FetchLayer, FetchWarp and LayerBlend units, as >>>>>> well as a pixel engine driver, so that two displays with primary >>>>>> planes can be supported. The pixel engine driver as a master binds >>>>>> those unit drivers as components. While at it, the pixel engine >>>>>> driver is a component to be bound with the upcoming DRM driver. >>>>> >>>>> Same question / comment: create subnodes directly, without going >>>>> through the subdevices. A lot of small functions that would benefit >>>>> being inlined. >>>> >>>> Like I replied in patch 06/16, I can't create sub devices directly. >>>> >>>> Can you please point out typical ones for those small functions if >>>> the comment still stands? >>>> >>>>> >>>>>> +static int dc_cf_bind(struct device *dev, struct device *master, void *data) >>>>>> +{ >>>>>> + struct platform_device *pdev = to_platform_device(dev); >>>>>> + struct dc_drm_device *dc_drm = data; >>>>>> + struct dc_pe *pe = dc_drm->pe; >>>>>> + struct dc_cf_priv *priv; >>>>>> + int id; >>>>>> + >>>>>> + priv = drmm_kzalloc(&dc_drm->base, sizeof(*priv), GFP_KERNEL); >>>>>> + if (!priv) >>>>>> + return -ENOMEM; >>>>>> + >>>>>> + priv->reg_cfg = devm_platform_ioremap_resource_byname(pdev, "cfg"); >>>>>> + if (IS_ERR(priv->reg_cfg)) >>>>>> + return PTR_ERR(priv->reg_cfg); >>>>>> + >>>>>> + id = of_alias_get_id(dev->of_node, "dc0-constframe"); >>>>> >>>>> Is it documented? Acked? >>>> >>>> Like I replied in patch 06/16, I can add aliases nodes to examples, >>>> if needed. >>>> >>>> No Nak from DT maintainers I'd say, but I hope there will be direct >>>> Ack(s). >>>> >>> >>> It was not Acked, because there was no documentation added for it. >> >> I may add aliases nodes in examples in next version, if no objections. > > Example is just example. It is not a documentation. You must explain it > in the binding, e.g. description. Ok, I'll explain it in the dt-binding description in next version. -- Regards, Liu Ying