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format=flowed Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.39 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean On 07-04-2025 21:47, Michael Nazzareno Trimarchi wrote: Hi MIke On Mon, Apr 7, 2025 at 3:42=E2=80=AFPM Mike Looijmans > wrote: ping? Maybe I should have added to the description that the Linux kernel allows MTD partitions to specify a size "0" in the device-tree to mean "the remainder". This patch makes u-boot compatible with the kernel's MTD partitions. U-boot MTDPARTS also supported this, but it's missing in the device-tree parser. Please expand your commit message . Add an example where is defined this way in linux kernel and add your example. I found out that is used a lot in= omap3 platform but please point me to some recent board if you know I'll send a v2. Indeed the OMAP3 boards are the quickest to find examples. Obviously, you shouldn't find any example in the u-boot tree because it did= n't work... I came across this because I wanted to migrate the topic_miami boards away = from MTDPARTS but the "fixed-partitions" did not work as expected when usin= g the same devicetree for kernel and u-boot. Otherwise topic-miami would ha= ve been the example you asked for... Michael M. On 25-03-2025 16:52, Mike Looijmans wrote: > Flash partitions may specify MTDPART_SIZ_FULL (=3D0) as the size of the > partition to indicate "the remainder of the flash". Make this work with > device-tree "fixed-partitions" as well. > > Signed-off-by: Mike Looijmans > > --- > > drivers/mtd/mtdpart.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c > index 88094b81e7a..5284890bd88 100644 > --- a/drivers/mtd/mtdpart.c > +++ b/drivers/mtd/mtdpart.c > @@ -910,11 +910,13 @@ int add_mtd_partitions_of(struct mtd_info *master) > continue; > > offset =3D ofnode_get_addr_size_index_notrans(child, 0, &si= ze); > - if (offset =3D=3D FDT_ADDR_T_NONE || !size) { > - debug("Missing partition offset/size on \"%s\" part= ition\n", > + if (offset =3D=3D FDT_ADDR_T_NONE) { > + debug("Missing partition offset on \"%s\" partition= \n", > master->name); > continue; > } > + if (size =3D=3D MTDPART_SIZ_FULL) > + size =3D master->size - offset; > > part.name =3D ofnode_read_string(child, "= label"); > if (!part.name) -- Mike Looijmans System Expert TOPIC Embedded Products B.V. Materiaalweg 4, 5681 RJ Best The Netherlands T: +31 (0) 499 33 69 69 E: mike.looijmans@topic.nl W: www.topic.nl -- Michael Nazzareno Trimarchi Co-Founder & Chief Executive Officer M. +39 347 913 2170 michael@amarulasolutions.com __________________________________ Amarula Solutions BV Joop Geesinkweg 125, 1114 AB, Amsterdam, NL T. +31 (0)85 111 9172 info@amarulasolutions.com www.amarulasolutions.com -- Mike Looijmans System Expert TOPIC Embedded Products B.V. Materiaalweg 4, 5681 RJ Best The Netherlands T: +31 (0) 499 33 69 69 E: mike.looijmans@topic.nl W: www.topic.nl