From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752644AbbBXLEW (ORCPT ); Tue, 24 Feb 2015 06:04:22 -0500 Received: from mailout3.samsung.com ([203.254.224.33]:19091 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752121AbbBXLEU (ORCPT ); Tue, 24 Feb 2015 06:04:20 -0500 X-AuditID: cbfee68f-f791c6d000004834-89-54ec5ab170c9 Message-id: <54EC5AB1.5090802@samsung.com> Date: Tue, 24 Feb 2015 20:04:17 +0900 From: Chanwoo Choi User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-version: 1.0 To: Arnd Bergmann Cc: kgene@kernel.org, mark.rutland@arm.com, marc.zyngier@arm.com, olof@lixom.net, catalin.marinas@arm.com, will.deacon@arm.com, inki.dae@samsung.com, chanho61.park@samsung.com, sw0312.kim@samsung.com, jh80.chung@samsung.com, ideal.song@samsung.com, a.kesavan@samsung.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 2/8] arm64: dts: exynos: Add dts files for 64-bit Exynos5433 SoC References: <1424755011-15999-1-git-send-email-cw00.choi@samsung.com> <7139111.LGA4lhSjob@wuerfel> <54EC3BB1.1020701@samsung.com> <7412525.l6YnQcTxtg@wuerfel> In-reply-to: <7412525.l6YnQcTxtg@wuerfel> Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrAIsWRmVeSWpSXmKPExsWyRsSkUHdj1JsQg9eP5S0er1nMZPF30jF2 i/fLehgtLu/Xtph/5Byrxa6/9xktJt2fwGJx41cbq0X/49fMFpseX2O1uLxrDpvFjPP7gLru /GOzWHr9IpPFqeufgWKTX7JZvPx4gsVB0GPNvDWMHr9/TWL02LSqk81j85J6jysnmlg9+ras YvT4vEkugD2KyyYlNSezLLVI3y6BK+P9w89sBVM5Kq78OcLYwLiMrYuRk0NCwETi97K3jBC2 mMSFe+uB4lwcQgJLGSXO71/EBFPUunMnO0RiEaNE4+5+ZgjnNaNE+40PrCBVvAJaEi+uHAQb xSKgKrHixDowmw0ovv/FDbB1ogJhEiunX2GBqBeU+DH5HpgtIqAoMfXFM7ChzAKzmSXaf2xi BkkIC0RKPPzZzAa3+vOf32AJTgFNiX0/54N1MwvoSOxvncYGYctLbF7zFmyShMBUDomtPTeg ThKQ+Db5EFADB1BCVmLTAWaI3yQlDq64wTKBUWwWkqNmIRk7C8nYBYzMqxhFUwuSC4qT0ouM 9YoTc4tL89L1kvNzNzECI/70v2f9OxjvHrA+xCjAwajEw5sg/CZEiDWxrLgy9xCjKdAVE5ml RJPzgWklryTe0NjMyMLUxNTYyNzSTEmcd6HUz2AhgfTEktTs1NSC1KL4otKc1OJDjEwcnFIN jDKRn2vDVs29VlHttXx9qM6fe+2p+//kCHZt+zFHKD/OOz1Bv2de8H/zg8fD5hgs3tuz5+Gb raWnnNq/qk/gMOja56F9PspvzQUvob/JHVO95z6uNVD5UOMRkmh+a/6TjbNK1x98t+fK4ziD IuXnMkWMEc5M2S1f3e+t3rqgeE5U6//93bwcc5RYijMSDbWYi4oTAbc/LVTzAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrFKsWRmVeSWpSXmKPExsVy+t9jAd2NUW9CDE7+lLB4vGYxk8XfScfY Ld4v62G0uLxf22L+kXOsFrv+3me0mHR/AovFjV9trBb9j18zW2x6fI3V4vKuOWwWM87vA+q6 84/NYun1i0wWp65/BopNfslm8fLjCRYHQY8189Ywevz+NYnRY9OqTjaPzUvqPa6caGL16Nuy itHj8ya5APaoBkabjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFslF58A XbfMHKAPlBTKEnNKgUIBicXFSvp2mCaEhrjpWsA0Ruj6hgTB9RgZoIGENYwZ7x9+ZiuYylFx 5c8RxgbGZWxdjJwcEgImEq07d7JD2GISF+6tB4pzcQgJLGKUaNzdzwzhvGaUaL/xgRWkildA S+LFlYOMIDaLgKrEihPrwGw2oPj+FzfApooKhEmsnH6FBaJeUOLH5HtgtoiAosTUF8/AhjIL zGaWaP+xiRkkISwQKfHwZzPC6s9/foMlOAU0Jfb9nA/WzSygI7G/dRobhC0vsXnNW+YJjAKz kCyZhaRsFpKyBYzMqxhFUwuSC4qT0nMN9YoTc4tL89L1kvNzNzGC08kzqR2MKxssDjEKcDAq 8fAmCL8JEWJNLCuuzD3EKMHBrCTCW+ADFOJNSaysSi3Kjy8qzUktPsRoCgyDicxSosn5wFSX VxJvaGxiZmRpZG5oYWRsriTOq2TfFiIkkJ5YkpqdmlqQWgTTx8TBKdXAKPeu8EvlhBMHoyNr UjadWewd7H6hNaFR8t3fJS/lJXvj9jEKrlq/Yf7v5Y3lvJKeURc+q8lc5bq1pDf80habM93X V61OEtD/odf7oeNUtYVZyxMGjtpnfyd5fCp8d+5YngRHx+Wzto95Gnr264kt7Jqt4f2qj4Vn yjL29YVM7yaVNR6tbb14VImlOCPRUIu5qDgRAGxWv7M9AwAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/24/2015 06:48 PM, Arnd Bergmann wrote: > On Tuesday 24 February 2015 17:52:01 Chanwoo Choi wrote: >> >> But, I have a question. >> If we put the aliases into the board dts file instaed of SoC dtsi, >> each board dts file may use the different alias name about same phandle. > > Yes, that is the idea. In particular with the uarts, the intention is > that the numbering of the device nodes in /dev is the same that is > printed on the board (if any), which may be different from the numbering > internal to the SoC. I check the uart device with Exynos5433 SoC based on Linux 4.0-rc1 If some board use the serial_0 and serial_3 as following in board dtsi, &serial_0 { --> UART 0 device status = "okay"; }; &serial_3 { --> UART 3 device status = "okay"; }; The serial core driver create the follwoing /dev/ttySACx device node by using the number of alias. It maintain the same device number of internel to the SoC. root@localhost:~# ls /dev/ttySAC ttySAC1 ttySAC3 Thanks, Chanwoo Choi