Hi I will read them tomorrow ;)
Thank you for understanding Michael Il mer 21 ago 2024, 22:25 Arseniy Krasnov <avkras...@salutedevices.com> ha scritto: > Hi, sorry, pls ping 😄 > > Thanks > > On 08.07.2024 10:13, Arseniy Krasnov wrote: > > Patchset is based on patchset for Linux (today merged to nand-next): > > > https://lore.kernel.org/linux-mtd/20240507230903.3399594-1-avkras...@salutedevices.com/ > > > > Here is description from it: > > > > > Amlogic's boot ROM code needs that some pages on NAND must be written > > > in special "short" ECC mode with scrambling enabled. Such pages: > > > 1) Contain some metadata about hardware. > > > 2) Located with some interval starting from 0 offset, until some > > > specified offset. Interval and second offset are set in the > > > device tree. > > > > > > This patchset adds R/W support for such pages. To enable it we can > setup > > > it in dts: > > > > > > nand-is-boot-medium; > > > amlogic,boot-pages = <1024>; > > > amlogic,boot-page-step = <128>; > > > > > > It means that each 128th page in range 0 to 1024 pages will be > accessed > > > in special mode ("short" ECC + scrambling). In practice this feature > is > > > needed when we want to update first block of NAND - driver will > enable > > > required mode by itself using value from device tree. > > > > The only difference is that patchset for Linux updates DT bindings, while > > this adds NAND_IS_BOOT_MEDIUM flag support. > > > > Changelog: > > v1 -> v2: > > * Pls see per-patch changelog. > > > > Arseniy Krasnov (3): > > mtd: rawnand: nand_base: support for 'NAND_IS_BOOT_MEDIUM' flag > > mtd: rawnand: meson: refactor use of 'meson_nfc_cmd_access()' > > mtd: rawnand: meson: read/write access for boot ROM pages > > > > drivers/mtd/nand/raw/meson_nand.c | 84 +++++++++++++++++++++---------- > > drivers/mtd/nand/raw/nand_base.c | 3 ++ > > include/linux/mtd/rawnand.h | 5 ++ > > 3 files changed, 65 insertions(+), 27 deletions(-) > > >
