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Mon, 4 Mar 2019 13:59:28 +0000 (GMT) Received: from SFHDAG6NODE1.st.com (10.75.127.16) by SFHDAG6NODE2.st.com (10.75.127.17) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Mon, 4 Mar 2019 14:59:27 +0100 Received: from SFHDAG6NODE1.st.com ([fe80::8d96:4406:44e3:eb27]) by SFHDAG6NODE1.st.com ([fe80::8d96:4406:44e3:eb27%20]) with mapi id 15.00.1347.000; Mon, 4 Mar 2019 14:59:28 +0100 From: Jean Nicolas GRAUX To: Linus Walleij Subject: Re: [PATCH] dmaengine: pl08x: be fair when re-assigning physical channel Thread-Topic: [PATCH] dmaengine: pl08x: be fair when re-assigning physical channel Thread-Index: AQHU0nE0+SW5lV7aS0qKQyuwmvl+rKX7NvQAgAAYmwCAAB+/AA== Date: Mon, 4 Mar 2019 13:59:28 +0000 Message-ID: <312e401c-5fd9-5fb0-0192-7b35c91fc918@st.com> References: <1551457100-13452-1-git-send-email-jean-nicolas.graux@st.com> <8b3ca76d-5df4-d63a-5bf9-83bfbe1a694c@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:60.0) Gecko/20100101 Thunderbird/60.4.0 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.45] Content-ID: <1353AD80C43E5F49B3C1495D9FD8BAD5@st.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-04_06:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190304_055945_239192_EEAD0A05 X-CRM114-Status: GOOD ( 17.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "dmaengine@vger.kernel.org" , Vinod Koul , Linux ARM 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 04/03/2019 1:05 PM, Linus Walleij wrote: > On Mon, Mar 4, 2019 at 11:37 AM Jean Nicolas GRAUX > wrote: >> On 04/03/2019 11:00 AM, Linus Walleij wrote: >>> Out of curiosity: what platform are you using this on? >> That's for the STMicro STA1295/STA1385 SoCs which make use of several >> ARM amba peripherals as well as nomadik gpio/pinctrl, etc ... >> Those machines are unfortunately not available upstream. I would like to >> allocate time for that but as you know, >> such activity require to dedicate substantial time & human resource. And >> we failed to find enough time for that up to now. > That's OK, very nice to know that some of these drivers/IPs are in > active use. It looks like siblings to Cartesio, so I assume they are > closer to Nomadik than Ux500? Yes, STA1295/STA1385 are SoCs for car radio & telematics market and it came after Cartesio SoC. So while it share some IPs with the ux500 (like pl08x, pl18x, pl011, pl022, nmk-gpio, nmk-i2c, nmk-mtu, fsmc-nand, ...), I guess you are right saying that it's closer to Nomadik architecture. > > I am testing Nomadik a lot since the NHK15 development board has > very nice form factor, and I try to keep Ux500 running as well. And honestly we benefit from your hard work. Thank you for that. > > I recently submitted the Ux500 MCDE (multi-channel display engine) > graphics driver for review and I'm working on it, I don't know if this > series is using the old PL111-derivative (already supported by DRM), > MCDE or something else, would be nice to know so I know if I shall > put you in review for it :) > https://patchwork.freedesktop.org/patch/284491/ Unfortunately, STA SoCx do not rely on the MCDE engine but on STM LTDC that is also used by some STM32 SoC. (devicetree/bindings/display/st,stm32-ltdc.txt). I know almost nothing about display but as far as I remember, MCDE is known to be a quite complex peripheral! Congratulations for taking up of such a challenging task. Regards, Jean-Nicolas. > > Yours, > Linus Walleij _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel