[FS#4010] Onion Omega2P+ reboot broken 19.07.8->21.02.0

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Wed Sep 8 02:09:46 PDT 2021


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FS#4010 - Onion Omega2P+ reboot broken 19.07.8->21.02.0
User who did this - Rico Wang (tisrico)

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>From 19.07.8->21.02.0, mtd driver has been replaced with spi-nor, the new driver has introduced a new optional property: broken-flash-reset. If this new property is not set, the driver would not revert it back to 3 bytes mode during reset.

mtd/spi-nor/spi-nor.c: in spi_nor_scan:

    if (of_property_read_bool(np, "broken-flash-reset"))
        nor->flags |= SNOR_F_BROKEN_RESET;


mtd/spi-nor/spi-nor.c:

void spi_nor_restore(struct spi_nor *nor)
{
    /* restore the addressing mode */
    if (nor->addr_width == 4 && !(nor->flags & SNOR_F_4B_OPCODES) &&
        nor->flags & SNOR_F_BROKEN_RESET)
        nor->params.set_4byte(nor, false);
}


https://www.kernel.org/doc/Documentation/devicetree/bindings/mtd/jedec%2Cspi-nor.txt
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4010#comment10063

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