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[67.187.90.124]) by smtp.gmail.com with ESMTPSA id o15sm4696989qtp.51.2021.01.26.10.01.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Jan 2021 10:01:57 -0800 (PST) Subject: Re: [PATCH] cmd_dtc: Enable generation of device tree symbols To: Cyril Brulebois , =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Frank Rowand Cc: Michal Marek , Arnd Bergmann , linux-kbuild@vger.kernel.org, Masahiro Yamada , linux-kernel@vger.kernel.org, Maxime Ripard , linux-arm-kernel@lists.infradead.org References: <20210125105757.661240-1-uwe@kleine-koenig.org> <20210125111520.mgqe7u7fh5425ywl@debamax.com> From: Frank Rowand Message-ID: Date: Tue, 26 Jan 2021 12:01:55 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210125111520.mgqe7u7fh5425ywl@debamax.com> Content-Type: text/plain; charset=UTF-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org +frank On 1/25/21 5:15 AM, Cyril Brulebois wrote: > Hi, > > Uwe Kleine-König (2021-01-25): >> Adding the -@ switch to dtc results in the binary devicetrees containing >> a list of symbolic references and their paths. This is necessary to >> apply device tree overlays e.g. on Raspberry Pi as described on >> https://www.raspberrypi.org/documentation/configuration/device-tree.md. >> >> Obviously the downside of this change is an increas of the size of the > > (as spotted by Uwe right after sending →) increase > >> generated dtbs, for an arm out-of-tree build (multi_v7_defconfig): >> >> $ du -s arch/arm/boot/dts* >> 101380 arch/arm/boot/dts-pre >> 114308 arch/arm/boot/dts-post >> >> so this is in average an increase of 12.8% in size. >> >> Signed-off-by: Uwe Kleine-König > > Tested-by: Cyril Brulebois > > with: > - a Raspberry Pi CM3 > - a carrier board designed after the official IO Board V3 > - an RTC accessible over I²C, made functional via a DTB overlay, that > can only be enabled once bcm2710-rpi-cm3.dtb has been generated with > this patch applied. > > > Cheers, > > > _______________________________________________ > 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=-7.2 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 ACFEEC433E0 for ; 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[67.187.90.124]) by smtp.gmail.com with ESMTPSA id o15sm4696989qtp.51.2021.01.26.10.01.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Jan 2021 10:01:57 -0800 (PST) Subject: Re: [PATCH] cmd_dtc: Enable generation of device tree symbols To: Cyril Brulebois , =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Frank Rowand References: <20210125105757.661240-1-uwe@kleine-koenig.org> <20210125111520.mgqe7u7fh5425ywl@debamax.com> From: Frank Rowand Message-ID: Date: Tue, 26 Jan 2021 12:01:55 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210125111520.mgqe7u7fh5425ywl@debamax.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210126_130159_521011_A3A4CD1E X-CRM114-Status: GOOD ( 19.16 ) 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: Michal Marek , Arnd Bergmann , linux-kbuild@vger.kernel.org, Masahiro Yamada , linux-kernel@vger.kernel.org, Maxime Ripard , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org K2ZyYW5rCgpPbiAxLzI1LzIxIDU6MTUgQU0sIEN5cmlsIEJydWxlYm9pcyB3cm90ZToKPiBIaSwK PiAKPiBVd2UgS2xlaW5lLUvDtm5pZyA8dXdlQGtsZWluZS1rb2VuaWcub3JnPiAoMjAyMS0wMS0y NSk6Cj4+IEFkZGluZyB0aGUgLUAgc3dpdGNoIHRvIGR0YyByZXN1bHRzIGluIHRoZSBiaW5hcnkg ZGV2aWNldHJlZXMgY29udGFpbmluZwo+PiBhIGxpc3Qgb2Ygc3ltYm9saWMgcmVmZXJlbmNlcyBh bmQgdGhlaXIgcGF0aHMuIFRoaXMgaXMgbmVjZXNzYXJ5IHRvCj4+IGFwcGx5IGRldmljZSB0cmVl IG92ZXJsYXlzIGUuZy4gb24gUmFzcGJlcnJ5IFBpIGFzIGRlc2NyaWJlZCBvbgo+PiBodHRwczov L3d3dy5yYXNwYmVycnlwaS5vcmcvZG9jdW1lbnRhdGlvbi9jb25maWd1cmF0aW9uL2RldmljZS10 cmVlLm1kLgo+Pgo+PiBPYnZpb3VzbHkgdGhlIGRvd25zaWRlIG9mIHRoaXMgY2hhbmdlIGlzIGFu IGluY3JlYXMgb2YgdGhlIHNpemUgb2YgdGhlCj4gCj4gKGFzIHNwb3R0ZWQgYnkgVXdlIHJpZ2h0 IGFmdGVyIHNlbmRpbmcg4oaSKSBpbmNyZWFzZQo+IAo+PiBnZW5lcmF0ZWQgZHRicywgZm9yIGFu IGFybSBvdXQtb2YtdHJlZSBidWlsZCAobXVsdGlfdjdfZGVmY29uZmlnKToKPj4KPj4gCSQgZHUg LXMgYXJjaC9hcm0vYm9vdC9kdHMqCj4+IAkxMDEzODAJYXJjaC9hcm0vYm9vdC9kdHMtcHJlCj4+ IAkxMTQzMDgJYXJjaC9hcm0vYm9vdC9kdHMtcG9zdAo+Pgo+PiBzbyB0aGlzIGlzIGluIGF2ZXJh Z2UgYW4gaW5jcmVhc2Ugb2YgMTIuOCUgaW4gc2l6ZS4KPj4KPj4gU2lnbmVkLW9mZi1ieTogVXdl IEtsZWluZS1Lw7ZuaWcgPHV3ZUBrbGVpbmUta29lbmlnLm9yZz4KPiAKPiBUZXN0ZWQtYnk6IEN5 cmlsIEJydWxlYm9pcyA8Y3lyaWxAZGViYW1heC5jb20+Cj4gCj4gd2l0aDoKPiAgLSBhIFJhc3Bi ZXJyeSBQaSBDTTMKPiAgLSBhIGNhcnJpZXIgYm9hcmQgZGVzaWduZWQgYWZ0ZXIgdGhlIG9mZmlj aWFsIElPIEJvYXJkIFYzCj4gIC0gYW4gUlRDIGFjY2Vzc2libGUgb3ZlciBJwrJDLCBtYWRlIGZ1 bmN0aW9uYWwgdmlhIGEgRFRCIG92ZXJsYXksIHRoYXQKPiAgICBjYW4gb25seSBiZSBlbmFibGVk IG9uY2UgYmNtMjcxMC1ycGktY20zLmR0YiBoYXMgYmVlbiBnZW5lcmF0ZWQgd2l0aAo+ICAgIHRo aXMgcGF0Y2ggYXBwbGllZC4KPiAKPiAKPiBDaGVlcnMsCj4gCj4gCj4gX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KPiBsaW51eC1hcm0ta2VybmVsIG1haWxp bmcgbGlzdAo+IGxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwo+IGh0dHA6Ly9s aXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo+IAoK Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFy bS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9y ZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1r ZXJuZWwK