[OpenWrt-Tickets] [OpenWrt] #2647: Can't write to NAND 128MiB 3, 3V 8-bit chip on Routerboard153.

[OpenWrt]

#2647: Can't write to NAND 128MiB 3,3V 8-bit chip on Routerboard153.
-----------------------+----------------------------------------------------
 Reporter:  anonymous  |        Owner:  juhosg  
     Type:  defect     |       Status:  assigned
 Priority:  normal     |    Milestone:  Kamikaze
Component:  kernel     |   Resolution:          
 Keywords:  adm5120    |  
-----------------------+----------------------------------------------------
Comment (by florian):

 Same happens with some rb532a with 64Mbit chip, here is the patch to be
 used :

 {{{
 Index: target/linux/rb532/files/arch/mips/rb500/devices.c
 ===================================================================
 --- target/linux/rb532/files/arch/mips/rb500/devices.c  (revision 10934)
 +++ target/linux/rb532/files/arch/mips/rb500/devices.c  (working copy)
 @@ -154,6 +154,19 @@
                  writeb(cmd, chip->IO_ADDR_W);
  }

 +/*
 + * We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader
 + * will not be able to find the kernel that we load.  So set the oobinfo
 + * when creating the partitions
 + */
 +
 +static struct nand_ecclayout rb1xx_nand_ecclayout = {
 +        .eccbytes       = 6,
 +        .eccpos         = { 8, 9, 10, 13, 14, 15 },
 +        .oobavail       = 9,
 +        .oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
 +};
 +
  static struct resource nand_slot0_res[] = {
         [0] = {
                 .name = "nand_membase",
 @@ -277,6 +290,7 @@
         rb500_nand_data.chip.partitions = rb500_partition_info;
         rb500_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
         rb500_nand_data.chip.options = NAND_NO_AUTOINCR;
 +       rb500_nand_data.chip.ecclayout = &rb1xx_nand_ecclayout;
  }
 }}}

-- 
Ticket URL: <https://dev.openwrt.org/ticket/2647#comment:23>
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