[PATCH v1 1/3] mtd: rawnand: nand_base: support for 'NAND_IS_BOOT_MEDIUM' flag

[Arseniy Krasnov]

Hi, thanks, ok! What build problem ? With this [PATCH v1] mtd: rawnand: macronix: OTP access for MX30LFxG18AC ?

Thanks

On 24.06.2024 11:37, Michael Nazzareno Trimarchi wrote:
> Hi
> 
> Yes I have seen and I will review today and cross-check. Did you lunch
> the testing on the other patches series? I would like to merge
> at all but we were having some build breakage
> 
> Michael
> 
> On Mon, Jun 24, 2024 at 7:16 AM Arseniy Krasnov
> <avkrasnov at salutedevices.com> wrote:
>>
>> Hi, sorry, pls ping :)
>>
>> Thanks
>>
>> On 02.06.2024 23:08, Arseniy Krasnov wrote:
>>> Based on Linux kernel:
>>> commit f922bd798bb9 ("mtd: rawnand: add an option to specify NAND chip as a boot device")
>>>
>>> Allow to define a NAND chip as a boot device. This can be helpful
>>> for the selection of the ECC algorithm and strength in case the boot
>>> ROM supports only a subset of controller provided options.
>>>
>>> Signed-off-by: Arseniy Krasnov <avkrasnov at salutedevices.com>
>>> ---
>>>  drivers/mtd/nand/raw/nand_base.c | 3 +++
>>>  include/linux/mtd/rawnand.h      | 6 ++++++
>>>  2 files changed, 9 insertions(+)
>>>
>>> diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
>>> index c40a0f23d7..ed605b4af5 100644
>>> --- a/drivers/mtd/nand/raw/nand_base.c
>>> +++ b/drivers/mtd/nand/raw/nand_base.c
>>> @@ -4458,6 +4458,9 @@ static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, ofnode nod
>>>       if (ret == 16)
>>>               chip->options |= NAND_BUSWIDTH_16;
>>>
>>> +     if (ofnode_read_bool(node, "nand-is-boot-medium"))
>>> +             chip->options |= NAND_IS_BOOT_MEDIUM;
>>> +
>>>       if (ofnode_read_bool(node, "nand-on-flash-bbt"))
>>>               chip->bbt_options |= NAND_BBT_USE_FLASH;
>>>
>>> diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
>>> index fb002ae641..4eb880d8fb 100644
>>> --- a/include/linux/mtd/rawnand.h
>>> +++ b/include/linux/mtd/rawnand.h
>>> @@ -218,6 +218,12 @@ enum nand_ecc_algo {
>>>  /* Device needs 3rd row address cycle */
>>>  #define NAND_ROW_ADDR_3              0x00004000
>>>
>>> +/*
>>> + * Whether the NAND chip is a boot medium. Drivers might use this information
>>> + * to select ECC algorithms supported by the boot ROM or similar restrictions.
>>> + */
>>> +#define NAND_IS_BOOT_MEDIUM  0x00400000
>>> +
>>>  /* Options valid for Samsung large page devices */
>>>  #define NAND_SAMSUNG_LP_OPTIONS NAND_CACHEPRG
>>>
> 
> 
>