[{"id":3679213,"web_url":"http://patchwork.ozlabs.org/comment/3679213/","msgid":"<CAFLszTg+nfKGCaHGz6-GHoQ+KntLYYdUTZqfYGpBdsvLSW9FZQ@mail.gmail.com>","list_archive_url":null,"date":"2026-04-20T04:14:58","subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","submitter":{"id":6170,"url":"http://patchwork.ozlabs.org/api/people/6170/","name":"Simon Glass","email":"sjg@chromium.org"},"content":"On 2026-04-20T01:23:26, Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:\n> kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep\n>\n> The fdtgrep command will reduce the DT to minimum size, thus eliminating\n> the extra padding configured via CONFIG_SYS_DTC_PAD_BYTES. Reinstate the\n> extra padding by running the output DTB from fdtgrep through DTC with the\n> -p CONFIG_SYS_DTC_PAD_BYTES flag again in case CONFIG_SYS_DTC_PAD_BYTES\n> is not zero.\n>\n> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>\n>\n> scripts/Makefile.lib | 7 +++++++\n>  1 file changed, 7 insertions(+)\n\nReviewed-by: Simon Glass <sjg@chromium.org>","headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256\n header.s=google header.b=Z8O2yeR2;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=chromium.org","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org\n header.b=\"Z8O2yeR2\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=chromium.org","phobos.denx.de;\n spf=pass smtp.mailfrom=sjg@chromium.org"],"Received":["from phobos.denx.de (phobos.denx.de [85.214.62.61])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fzXFz2nRmz1yGs\n\tfor <incoming@patchwork.ozlabs.org>; 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Sun, 19 Apr 2026\n 21:15:11 -0700 (PDT)","MIME-Version":"1.0","References":"<20260420012348.400492-1-marek.vasut+renesas@mailbox.org>","In-Reply-To":"<20260420012348.400492-1-marek.vasut+renesas@mailbox.org>","From":"Simon Glass <sjg@chromium.org>","Date":"Mon, 20 Apr 2026 16:14:58 +1200","X-Gm-Features":"AQROBzC-uBYuNEFv-QJqFvNwRSZ-jMsYh547ex2E-tbTeBKnyliWbj1G8lUIox8","Message-ID":"\n <CAFLszTg+nfKGCaHGz6-GHoQ+KntLYYdUTZqfYGpBdsvLSW9FZQ@mail.gmail.com>","Subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","To":"marek.vasut+renesas@mailbox.org","Cc":"u-boot@lists.denx.de, Adriano Cordova <adrianox@gmail.com>,\n Ilias Apalodimas <ilias.apalodimas@linaro.org>,\n Peter Robinson <pbrobinson@gmail.com>,\n Quentin Schulz <quentin.schulz@cherry.de>,\n Sughosh Ganu <sughosh.ganu@arm.com>,\n Tom Rini <trini@konsulko.com>","Content-Type":"text/plain; charset=\"UTF-8\"","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion <u-boot.lists.denx.de>","List-Unsubscribe":"<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>","List-Archive":"<https://lists.denx.de/pipermail/u-boot/>","List-Post":"<mailto:u-boot@lists.denx.de>","List-Help":"<mailto:u-boot-request@lists.denx.de?subject=help>","List-Subscribe":"<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" <u-boot-bounces@lists.denx.de>","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3679639,"web_url":"http://patchwork.ozlabs.org/comment/3679639/","msgid":"<0c112980-e5db-4acc-97df-c1097c41112b@mailbox.org>","list_archive_url":null,"date":"2026-04-20T12:43:14","subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","submitter":{"id":85664,"url":"http://patchwork.ozlabs.org/api/people/85664/","name":"Marek Vasut","email":"marek.vasut@mailbox.org"},"content":"On 4/20/26 6:14 AM, Simon Glass wrote:\n> On 2026-04-20T01:23:26, Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:\n>> kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep\n>>\n>> The fdtgrep command will reduce the DT to minimum size, thus eliminating\n>> the extra padding configured via CONFIG_SYS_DTC_PAD_BYTES. Reinstate the\n>> extra padding by running the output DTB from fdtgrep through DTC with the\n>> -p CONFIG_SYS_DTC_PAD_BYTES flag again in case CONFIG_SYS_DTC_PAD_BYTES\n>> is not zero.\n>>\n>> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>\n>>\n>> scripts/Makefile.lib | 7 +++++++\n>>   1 file changed, 7 insertions(+)\n> \n> Reviewed-by: Simon Glass <sjg@chromium.org>\n\nIs this something which can be added into fdtgrep itself btw ?","headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=mailbox.org header.i=@mailbox.org header.a=rsa-sha256\n header.s=mail20150812 header.b=jNrBVFrL;\n\tdkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org\n header.a=rsa-sha256 header.s=mail20150812 header.b=UAKfiTYq;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; 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charset=UTF-8; format=flowed","Content-Transfer-Encoding":"7bit","X-MBO-RS-ID":"d89125dedeab75e8749","X-MBO-RS-META":"5xzpp8gjduyqqo9qi6g3udrfjoctstqn","X-Rspamd-Queue-Id":"4g03cS4MDXz9tfd","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion <u-boot.lists.denx.de>","List-Unsubscribe":"<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>","List-Archive":"<https://lists.denx.de/pipermail/u-boot/>","List-Post":"<mailto:u-boot@lists.denx.de>","List-Help":"<mailto:u-boot-request@lists.denx.de?subject=help>","List-Subscribe":"<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" <u-boot-bounces@lists.denx.de>","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3680168,"web_url":"http://patchwork.ozlabs.org/comment/3680168/","msgid":"<CAFLszTgV6L=G2-MpBgYh3h=4QM0r0V-aLueS3zUgTCTx3YmcpA@mail.gmail.com>","list_archive_url":null,"date":"2026-04-22T01:15:37","subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","submitter":{"id":6170,"url":"http://patchwork.ozlabs.org/api/people/6170/","name":"Simon Glass","email":"sjg@chromium.org"},"content":"Hi Marek,\n\nOn Tue, 21 Apr 2026 at 12:48, Marek Vasut <marek.vasut@mailbox.org> wrote:\n>\n> On 4/20/26 6:14 AM, Simon Glass wrote:\n> > On 2026-04-20T01:23:26, Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:\n> >> kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep\n> >>\n> >> The fdtgrep command will reduce the DT to minimum size, thus eliminating\n> >> the extra padding configured via CONFIG_SYS_DTC_PAD_BYTES. Reinstate the\n> >> extra padding by running the output DTB from fdtgrep through DTC with the\n> >> -p CONFIG_SYS_DTC_PAD_BYTES flag again in case CONFIG_SYS_DTC_PAD_BYTES\n> >> is not zero.\n> >>\n> >> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>\n> >>\n> >> scripts/Makefile.lib | 7 +++++++\n> >>   1 file changed, 7 insertions(+)\n> >\n> > Reviewed-by: Simon Glass <sjg@chromium.org>\n>\n> Is this something which can be added into fdtgrep itself btw ?\n\nYes I'm sure that would be possible: perhaps a flag to maintain the\nsame padding as it finds in the input file.\n\nRegards,\nSimon","headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256\n header.s=google header.b=A/qoiX7f;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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Tue, 21 Apr 2026\n 18:16:07 -0700 (PDT)","MIME-Version":"1.0","References":"<20260420012348.400492-1-marek.vasut+renesas@mailbox.org>\n <CAFLszTg+nfKGCaHGz6-GHoQ+KntLYYdUTZqfYGpBdsvLSW9FZQ@mail.gmail.com>\n <0c112980-e5db-4acc-97df-c1097c41112b@mailbox.org>","In-Reply-To":"<0c112980-e5db-4acc-97df-c1097c41112b@mailbox.org>","From":"Simon Glass <sjg@chromium.org>","Date":"Wed, 22 Apr 2026 13:15:37 +1200","X-Gm-Features":"AQROBzDUsXO46LaaHXKN0NeRiMOYsqlXGHFrnypW_6893cKLVWK-7mel51je7s0","Message-ID":"\n <CAFLszTgV6L=G2-MpBgYh3h=4QM0r0V-aLueS3zUgTCTx3YmcpA@mail.gmail.com>","Subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","To":"Marek Vasut <marek.vasut@mailbox.org>","Cc":"marek.vasut+renesas@mailbox.org, u-boot@lists.denx.de,\n Adriano Cordova <adrianox@gmail.com>,\n Ilias Apalodimas <ilias.apalodimas@linaro.org>,\n Peter Robinson <pbrobinson@gmail.com>,\n Quentin Schulz <quentin.schulz@cherry.de>,\n Sughosh Ganu <sughosh.ganu@arm.com>, Tom Rini <trini@konsulko.com>","Content-Type":"text/plain; charset=\"UTF-8\"","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion <u-boot.lists.denx.de>","List-Unsubscribe":"<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>","List-Archive":"<https://lists.denx.de/pipermail/u-boot/>","List-Post":"<mailto:u-boot@lists.denx.de>","List-Help":"<mailto:u-boot-request@lists.denx.de?subject=help>","List-Subscribe":"<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" <u-boot-bounces@lists.denx.de>","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3680183,"web_url":"http://patchwork.ozlabs.org/comment/3680183/","msgid":"<1f18aeee-ca36-4ec3-af50-d3ebe49c2a4f@mailbox.org>","list_archive_url":null,"date":"2026-04-22T01:44:33","subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","submitter":{"id":85664,"url":"http://patchwork.ozlabs.org/api/people/85664/","name":"Marek Vasut","email":"marek.vasut@mailbox.org"},"content":"On 4/22/26 3:15 AM, Simon Glass wrote:\n> Hi Marek,\n> \n> On Tue, 21 Apr 2026 at 12:48, Marek Vasut <marek.vasut@mailbox.org> wrote:\n>>\n>> On 4/20/26 6:14 AM, Simon Glass wrote:\n>>> On 2026-04-20T01:23:26, Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:\n>>>> kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep\n>>>>\n>>>> The fdtgrep command will reduce the DT to minimum size, thus eliminating\n>>>> the extra padding configured via CONFIG_SYS_DTC_PAD_BYTES. Reinstate the\n>>>> extra padding by running the output DTB from fdtgrep through DTC with the\n>>>> -p CONFIG_SYS_DTC_PAD_BYTES flag again in case CONFIG_SYS_DTC_PAD_BYTES\n>>>> is not zero.\n>>>>\n>>>> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>\n>>>>\n>>>> scripts/Makefile.lib | 7 +++++++\n>>>>    1 file changed, 7 insertions(+)\n>>>\n>>> Reviewed-by: Simon Glass <sjg@chromium.org>\n>>\n>> Is this something which can be added into fdtgrep itself btw ?\n> \n> Yes I'm sure that would be possible: perhaps a flag to maintain the\n> same padding as it finds in the input file.\nWe can not determine the padding from the input DTB file itself, so the \noption would have to take a padding parameter. But I wonder if it makes \nsense to grow fdtgrep this way, or whether using dtc to reinstate the \npadding is better.","headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=mailbox.org header.i=@mailbox.org header.a=rsa-sha256\n header.s=mail20150812 header.b=YUjiVVaH;\n\tdkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org\n header.a=rsa-sha256 header.s=mail20150812 header.b=nG87wYWg;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=reject dis=none) header.from=mailbox.org","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (2048-bit key;\n secure) header.d=mailbox.org header.i=@mailbox.org header.b=\"YUjiVVaH\";\n\tdkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org\n header.b=\"nG87wYWg\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=reject dis=none) header.from=mailbox.org","phobos.denx.de;\n spf=pass smtp.mailfrom=marek.vasut@mailbox.org"],"Received":["from phobos.denx.de (phobos.denx.de\n [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g0hsf6gkcz1y2d\n\tfor <incoming@patchwork.ozlabs.org>; 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charset=UTF-8; format=flowed","Content-Transfer-Encoding":"7bit","X-MBO-RS-META":"fos49pixju5zinwyhiptogtjoj53hef3","X-MBO-RS-ID":"5d93993e7f2c9ed1880","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion <u-boot.lists.denx.de>","List-Unsubscribe":"<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>","List-Archive":"<https://lists.denx.de/pipermail/u-boot/>","List-Post":"<mailto:u-boot@lists.denx.de>","List-Help":"<mailto:u-boot-request@lists.denx.de?subject=help>","List-Subscribe":"<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" <u-boot-bounces@lists.denx.de>","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3680190,"web_url":"http://patchwork.ozlabs.org/comment/3680190/","msgid":"<CAFLszTi4w7d1rVSViaShX7yT=QWHx363Y4Ac3MSrqJ6N+6Ai2Q@mail.gmail.com>","list_archive_url":null,"date":"2026-04-22T02:25:59","subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","submitter":{"id":6170,"url":"http://patchwork.ozlabs.org/api/people/6170/","name":"Simon Glass","email":"sjg@chromium.org"},"content":"Hi Marek,\n\nOn Wed, 22 Apr 2026 at 13:46, Marek Vasut <marek.vasut@mailbox.org> wrote:\n>\n> On 4/22/26 3:15 AM, Simon Glass wrote:\n> > Hi Marek,\n> >\n> > On Tue, 21 Apr 2026 at 12:48, Marek Vasut <marek.vasut@mailbox.org> wrote:\n> >>\n> >> On 4/20/26 6:14 AM, Simon Glass wrote:\n> >>> On 2026-04-20T01:23:26, Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:\n> >>>> kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep\n> >>>>\n> >>>> The fdtgrep command will reduce the DT to minimum size, thus eliminating\n> >>>> the extra padding configured via CONFIG_SYS_DTC_PAD_BYTES. Reinstate the\n> >>>> extra padding by running the output DTB from fdtgrep through DTC with the\n> >>>> -p CONFIG_SYS_DTC_PAD_BYTES flag again in case CONFIG_SYS_DTC_PAD_BYTES\n> >>>> is not zero.\n> >>>>\n> >>>> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>\n> >>>>\n> >>>> scripts/Makefile.lib | 7 +++++++\n> >>>>    1 file changed, 7 insertions(+)\n> >>>\n> >>> Reviewed-by: Simon Glass <sjg@chromium.org>\n> >>\n> >> Is this something which can be added into fdtgrep itself btw ?\n> >\n> > Yes I'm sure that would be possible: perhaps a flag to maintain the\n> > same padding as it finds in the input file.\n> We can not determine the padding from the input DTB file itself, so the\n> option would have to take a padding parameter. But I wonder if it makes\n> sense to grow fdtgrep this way, or whether using dtc to reinstate the\n> padding is better.\n\nI think fdtgrep is cleaner. I'll send a patch.\n\nRegards,\nSimon","headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256\n header.s=google header.b=lN4mT1SM;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=chromium.org","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org\n header.b=\"lN4mT1SM\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=chromium.org","phobos.denx.de;\n spf=pass smtp.mailfrom=sjg@chromium.org"],"Received":["from phobos.denx.de (phobos.denx.de\n [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g0jlN0L3Tz1yGs\n\tfor <incoming@patchwork.ozlabs.org>; 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charset=\"UTF-8\"","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion <u-boot.lists.denx.de>","List-Unsubscribe":"<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>","List-Archive":"<https://lists.denx.de/pipermail/u-boot/>","List-Post":"<mailto:u-boot@lists.denx.de>","List-Help":"<mailto:u-boot-request@lists.denx.de?subject=help>","List-Subscribe":"<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" <u-boot-bounces@lists.denx.de>","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"}},{"id":3680885,"web_url":"http://patchwork.ozlabs.org/comment/3680885/","msgid":"<29c41700-62ae-47b0-86c8-e5ce1356d04f@mailbox.org>","list_archive_url":null,"date":"2026-04-22T19:09:08","subject":"Re: [PATCH] kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep","submitter":{"id":85664,"url":"http://patchwork.ozlabs.org/api/people/85664/","name":"Marek Vasut","email":"marek.vasut@mailbox.org"},"content":"On 4/22/26 4:25 AM, Simon Glass wrote:\n> Hi Marek,\n> \n> On Wed, 22 Apr 2026 at 13:46, Marek Vasut <marek.vasut@mailbox.org> wrote:\n>>\n>> On 4/22/26 3:15 AM, Simon Glass wrote:\n>>> Hi Marek,\n>>>\n>>> On Tue, 21 Apr 2026 at 12:48, Marek Vasut <marek.vasut@mailbox.org> wrote:\n>>>>\n>>>> On 4/20/26 6:14 AM, Simon Glass wrote:\n>>>>> On 2026-04-20T01:23:26, Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:\n>>>>>> kbuild: Respect CONFIG_SYS_DTC_PAD_BYTES after fdtgrep\n>>>>>>\n>>>>>> The fdtgrep command will reduce the DT to minimum size, thus eliminating\n>>>>>> the extra padding configured via CONFIG_SYS_DTC_PAD_BYTES. Reinstate the\n>>>>>> extra padding by running the output DTB from fdtgrep through DTC with the\n>>>>>> -p CONFIG_SYS_DTC_PAD_BYTES flag again in case CONFIG_SYS_DTC_PAD_BYTES\n>>>>>> is not zero.\n>>>>>>\n>>>>>> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>\n>>>>>>\n>>>>>> scripts/Makefile.lib | 7 +++++++\n>>>>>>     1 file changed, 7 insertions(+)\n>>>>>\n>>>>> Reviewed-by: Simon Glass <sjg@chromium.org>\n>>>>\n>>>> Is this something which can be added into fdtgrep itself btw ?\n>>>\n>>> Yes I'm sure that would be possible: perhaps a flag to maintain the\n>>> same padding as it finds in the input file.\n>> We can not determine the padding from the input DTB file itself, so the\n>> option would have to take a padding parameter. But I wonder if it makes\n>> sense to grow fdtgrep this way, or whether using dtc to reinstate the\n>> padding is better.\n> \n> I think fdtgrep is cleaner. I'll send a patch.\nOK, thank you.","headers":{"Return-Path":"<u-boot-bounces@lists.denx.de>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=mailbox.org header.i=@mailbox.org header.a=rsa-sha256\n header.s=mail20150812 header.b=a7m2qiOt;\n\tdkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org\n header.a=rsa-sha256 header.s=mail20150812 header.b=SvIVEA6c;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=reject dis=none) header.from=mailbox.org","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (2048-bit key;\n secure) header.d=mailbox.org header.i=@mailbox.org header.b=\"a7m2qiOt\";\n\tdkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org\n header.b=\"SvIVEA6c\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=reject dis=none) header.from=mailbox.org","phobos.denx.de;\n spf=pass smtp.mailfrom=marek.vasut@mailbox.org","outgoing_mbo_mout;\n dkim=pass header.d=mailbox.org header.s=mail20150812 header.b=SvIVEA6c;\n spf=pass (outgoing_mbo_mout: domain of marek.vasut@mailbox.org designates\n 2001:67c:2050:b231:465::1 as permitted sender)\n smtp.mailfrom=marek.vasut@mailbox.org"],"Received":["from phobos.denx.de (phobos.denx.de\n [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g180b1qRfz1yHB\n\tfor <incoming@patchwork.ozlabs.org>; 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