From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A80D3C433DF for ; Fri, 15 May 2020 09:35:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D4FE206F1 for ; Fri, 15 May 2020 09:35:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="qv0C9Up+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728148AbgEOJe7 (ORCPT ); Fri, 15 May 2020 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11:34:15 +0200 From: Benjamin GAIGNARD To: dillon min CC: Alexandre TORGUE , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Daniel Vetter , Dave Airlie , Linus Walleij , linux-clk , "linux-kernel@vger.kernel.org" , "open list:DRM PANEL DRIVERS" , "linux-stm32@st-md-mailman.stormreply.com" , Stephen Boyd , Rob Herring , "thierry.reding@gmail.com" , Maxime Coquelin , "Sam Ravnborg" , Michael Turquette , Linux ARM Subject: Re: [Linux-stm32] [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board Thread-Topic: [Linux-stm32] [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board Thread-Index: AQHWKckeJCttwtJ4Q0KZXBBPInzZ9ainaAuAgAAEJgCAAUVIgIAADrKAgAACuQA= Date: Fri, 15 May 2020 09:34:15 +0000 Message-ID: <2afd2853-e3bc-0c69-a0e5-8d4aa631a634@st.com> References: <1589267017-17294-1-git-send-email-dillon.minfei@gmail.com> <1589267017-17294-4-git-send-email-dillon.minfei@gmail.com> <818b93b4-4431-8338-cd90-ed125ecac615@st.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.44] Content-Type: text/plain; charset="utf-8" Content-ID: <26620BBF7B05D942A1AF671AA1D5FAE6@st.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.676 definitions=2020-05-15_03:2020-05-14,2020-05-15 signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCk9uIDUvMTUvMjAgMTE6MjQgQU0sIGRpbGxvbiBtaW4gd3JvdGU6DQo+IEhpIEJlbmphbWlu LA0KPg0KPiB0aGFua3MgZm9yIHJlcGx5Lg0KPg0KPiBPbiBGcmksIE1heSAxNSwgMjAyMCBhdCA0 OjMxIFBNIEJlbmphbWluIEdBSUdOQVJEDQo+IDxiZW5qYW1pbi5nYWlnbmFyZEBzdC5jb20+IHdy 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2020 11:34:16 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag3node3.st.com [10.75.127.9]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 55B332AF960; Fri, 15 May 2020 11:34:16 +0200 (CEST) Received: from SFHDAG3NODE3.st.com (10.75.127.9) by SFHDAG3NODE3.st.com (10.75.127.9) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 15 May 2020 11:34:15 +0200 Received: from SFHDAG3NODE3.st.com ([fe80::3507:b372:7648:476]) by SFHDAG3NODE3.st.com ([fe80::3507:b372:7648:476%20]) with mapi id 15.00.1347.000; Fri, 15 May 2020 11:34:15 +0200 From: Benjamin GAIGNARD To: dillon min Subject: Re: [Linux-stm32] [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board Thread-Topic: [Linux-stm32] [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board Thread-Index: AQHWKckeJCttwtJ4Q0KZXBBPInzZ9ainaAuAgAAEJgCAAUVIgIAADrKAgAACuQA= Date: Fri, 15 May 2020 09:34:15 +0000 Message-ID: <2afd2853-e3bc-0c69-a0e5-8d4aa631a634@st.com> References: <1589267017-17294-1-git-send-email-dillon.minfei@gmail.com> <1589267017-17294-4-git-send-email-dillon.minfei@gmail.com> <818b93b4-4431-8338-cd90-ed125ecac615@st.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.44] Content-ID: <26620BBF7B05D942A1AF671AA1D5FAE6@st.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.676 definitions=2020-05-15_03:2020-05-14, 2020-05-15 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200515_023434_785947_01762B8B X-CRM114-Status: GOOD ( 23.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Alexandre TORGUE , Michael Turquette , Dave Airlie , Linus Walleij , "linux-kernel@vger.kernel.org" , "open list:DRM PANEL DRIVERS" , "linux-stm32@st-md-mailman.stormreply.com" , Stephen Boyd , Rob Herring , "thierry.reding@gmail.com" , Linux ARM , Daniel Vetter , Sam Ravnborg , linux-clk , Maxime Coquelin Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 5/15/20 11:24 AM, dillon min wrote: > Hi Benjamin, > > thanks for reply. > > On Fri, May 15, 2020 at 4:31 PM Benjamin GAIGNARD > wrote: >> >> >> On 5/14/20 3:07 PM, dillon min wrote: >>> Hi Alexandre, >>> >>> On Thu, May 14, 2020 at 8:53 PM Alexandre Torgue >>> wrote: >>>> >>>> On 5/14/20 10:24 AM, Linus Walleij wrote: >>>>> On Tue, May 12, 2020 at 9:04 AM wrote: >>>>> >>>>>> From: dillon min >>>>>> >>>>>> Enable the ltdc & ili9341 on stm32429-disco board. >>>>>> >>>>>> Signed-off-by: dillon min >>>>> This mostly looks good but... >>>>> >>>>>> +&spi5 { >>>>>> + status = "okay"; >>>>>> + pinctrl-0 = <&spi5_pins>; >>>>>> + pinctrl-names = "default"; >>>>>> + #address-cells = <1>; >>>>>> + #size-cells = <0>; >>>>>> + cs-gpios = <&gpioc 2 GPIO_ACTIVE_LOW>; >>>>>> + dmas = <&dma2 3 2 0x400 0x0>, >>>>>> + <&dma2 4 2 0x400 0x0>; >>>>>> + dma-names = "rx", "tx"; >>>>> These DMA assignments seem to be SoC things and should >>>>> rather be in the DTS(I) file where &spi5 is defined, right? >>>>> stm32f429.dtsi I suppose? >>>> I agree with Linus, DMA have to be defined in SoC dtsi. And if a board >>>> doesn't want to use it, we use the "delete-property". >>> Yes, will move to Soc dtsi in next submits. >>> >>> i'm working on write a v4l2-m2m driver for dma2d of stm32 to support >>> pixel conversion >>> alpha blending between foreground and background graphics. >>> >>> as you know, some soc's engineer trying to add this function to drm system. >>> >>> do you know st's planning about soc's hardware accelerator driver on stm32mp? >>> such as chrom-art, will add to drm subsystem via ioctl to access, or to v4l2, >> On stm32mp we do not plan to use chrom-art in drm or v4l2 because it >> does fit >> with userland way of working. We use the GPU to do conversion, scaling, >> blending >> and composition in only one go. >> As explain here [1] DRM subsytem it isn't a solution and v4l2-m2m isn't >> used in any >> mainline compositors like Weston or android surfaceflinger. >> >> Benjamin >> > After check stm32mp's datasheets, they don't have chrom-art ip inside. sorry for > didn't check it yet. > > for stm32h7 series with chrom-art, jpeg hardware accelerator inside. > does st has plan to > setup a driver to support it ? i prefer v4l2-m2m should be easier to > implement it. > co work with dcmi, fbdev. ST doesn't plan to create a driver for chrom-art because nothing in mainline userland could use it. Benjamin > > thanks. > > best regards. > > Dillon >> [1] >> https://www.phoronix.com/scan.php?page=news_item&px=Linux-DRM-No-2D-Accel-API >>> thanks. >>> >>>>> It is likely the same no matter which device is using spi5. >>>>> >>>>> Yours, >>>>> Linus Walleij >>>>> >>> _______________________________________________ >>> Linux-stm32 mailing list >>> Linux-stm32@st-md-mailman.stormreply.com >>> https://st-md-mailman.stormreply.com/mailman/listinfo/linux-stm32 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3943FC433DF for ; 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Fri, 15 May 2020 11:34:17 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 7128F100034; Fri, 15 May 2020 11:34:16 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag3node3.st.com [10.75.127.9]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 55B332AF960; Fri, 15 May 2020 11:34:16 +0200 (CEST) Received: from SFHDAG3NODE3.st.com (10.75.127.9) by SFHDAG3NODE3.st.com (10.75.127.9) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 15 May 2020 11:34:15 +0200 Received: from SFHDAG3NODE3.st.com ([fe80::3507:b372:7648:476]) by SFHDAG3NODE3.st.com ([fe80::3507:b372:7648:476%20]) with mapi id 15.00.1347.000; Fri, 15 May 2020 11:34:15 +0200 From: Benjamin GAIGNARD To: dillon min Subject: Re: [Linux-stm32] [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board Thread-Topic: [Linux-stm32] [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board Thread-Index: AQHWKckeJCttwtJ4Q0KZXBBPInzZ9ainaAuAgAAEJgCAAUVIgIAADrKAgAACuQA= Date: Fri, 15 May 2020 09:34:15 +0000 Message-ID: <2afd2853-e3bc-0c69-a0e5-8d4aa631a634@st.com> References: <1589267017-17294-1-git-send-email-dillon.minfei@gmail.com> <1589267017-17294-4-git-send-email-dillon.minfei@gmail.com> <818b93b4-4431-8338-cd90-ed125ecac615@st.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.44] Content-ID: <26620BBF7B05D942A1AF671AA1D5FAE6@st.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.676 definitions=2020-05-15_03:2020-05-14, 2020-05-15 signatures=0 X-Mailman-Approved-At: Sat, 16 May 2020 09:58:59 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Alexandre TORGUE , Michael Turquette , Dave Airlie , "linux-kernel@vger.kernel.org" , "open list:DRM PANEL DRIVERS" , "linux-stm32@st-md-mailman.stormreply.com" , Stephen Boyd , Rob Herring , "thierry.reding@gmail.com" , Linux ARM , Sam Ravnborg , linux-clk , Maxime Coquelin Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 5/15/20 11:24 AM, dillon min wrote: > Hi Benjamin, > > thanks for reply. > > On Fri, May 15, 2020 at 4:31 PM Benjamin GAIGNARD > wrote: >> >> >> On 5/14/20 3:07 PM, dillon min wrote: >>> Hi Alexandre, >>> >>> On Thu, May 14, 2020 at 8:53 PM Alexandre Torgue >>> wrote: >>>> >>>> On 5/14/20 10:24 AM, Linus Walleij wrote: >>>>> On Tue, May 12, 2020 at 9:04 AM wrote: >>>>> >>>>>> From: dillon min >>>>>> >>>>>> Enable the ltdc & ili9341 on stm32429-disco board. >>>>>> >>>>>> Signed-off-by: dillon min >>>>> This mostly looks good but... >>>>> >>>>>> +&spi5 { >>>>>> + status = "okay"; >>>>>> + pinctrl-0 = <&spi5_pins>; >>>>>> + pinctrl-names = "default"; >>>>>> + #address-cells = <1>; >>>>>> + #size-cells = <0>; >>>>>> + cs-gpios = <&gpioc 2 GPIO_ACTIVE_LOW>; >>>>>> + dmas = <&dma2 3 2 0x400 0x0>, >>>>>> + <&dma2 4 2 0x400 0x0>; >>>>>> + dma-names = "rx", "tx"; >>>>> These DMA assignments seem to be SoC things and should >>>>> rather be in the DTS(I) file where &spi5 is defined, right? >>>>> stm32f429.dtsi I suppose? >>>> I agree with Linus, DMA have to be defined in SoC dtsi. And if a board >>>> doesn't want to use it, we use the "delete-property". >>> Yes, will move to Soc dtsi in next submits. >>> >>> i'm working on write a v4l2-m2m driver for dma2d of stm32 to support >>> pixel conversion >>> alpha blending between foreground and background graphics. >>> >>> as you know, some soc's engineer trying to add this function to drm system. >>> >>> do you know st's planning about soc's hardware accelerator driver on stm32mp? >>> such as chrom-art, will add to drm subsystem via ioctl to access, or to v4l2, >> On stm32mp we do not plan to use chrom-art in drm or v4l2 because it >> does fit >> with userland way of working. We use the GPU to do conversion, scaling, >> blending >> and composition in only one go. >> As explain here [1] DRM subsytem it isn't a solution and v4l2-m2m isn't >> used in any >> mainline compositors like Weston or android surfaceflinger. >> >> Benjamin >> > After check stm32mp's datasheets, they don't have chrom-art ip inside. sorry for > didn't check it yet. > > for stm32h7 series with chrom-art, jpeg hardware accelerator inside. > does st has plan to > setup a driver to support it ? i prefer v4l2-m2m should be easier to > implement it. > co work with dcmi, fbdev. ST doesn't plan to create a driver for chrom-art because nothing in mainline userland could use it. Benjamin > > thanks. > > best regards. > > Dillon >> [1] >> https://www.phoronix.com/scan.php?page=news_item&px=Linux-DRM-No-2D-Accel-API >>> thanks. >>> >>>>> It is likely the same no matter which device is using spi5. >>>>> >>>>> Yours, >>>>> Linus Walleij >>>>> >>> _______________________________________________ >>> Linux-stm32 mailing list >>> Linux-stm32@st-md-mailman.stormreply.com >>> https://st-md-mailman.stormreply.com/mailman/listinfo/linux-stm32 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel