[PATCH v2] mtd: spi-nor: gigadevice: Add support for gd25lr256e

[Tudor.Ambarus at microchip.com]

On 10/23/22 09:58, Mika Westerberg wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Add support for this 32MB serial flash.
> 
> Signed-off-by: Mika Westerberg <mika.westerberg at linux.intel.com>
> ---
> The previous version of the patch can be found here:
> 
>   https://lore.kernel.org/linux-mtd/20220922135646.49906-1-mika.westerberg@linux.intel.com/
> 
> This version uses SFDP instead as the chip supports it just fine.
> 
>  drivers/mtd/spi-nor/gigadevice.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/gigadevice.c b/drivers/mtd/spi-nor/gigadevice.c
> index 119b38e6fc2a..29ae4048bb0f 100644
> --- a/drivers/mtd/spi-nor/gigadevice.c
> +++ b/drivers/mtd/spi-nor/gigadevice.c
> @@ -57,6 +57,9 @@ static const struct flash_info gigadevice_nor_parts[] = {
>                 FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6)
>                 FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
>                 .fixups = &gd25q256_fixups },
> +       { "gd25lr256e", INFO(0xc86719, 0, 64 * 1024, 512)
> +               PARSE_SFDP
> +               FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
>  };
> 
>  const struct spi_nor_manufacturer spi_nor_gigadevice = {

Hi, Mika!

When submitting flash updates or new flash additions, we require contributors
to do a little test using mtd-utils and to dump the SPI NOR sysfs entries.
Would you please do that?

Here's the simple test:

Run the test_qspi.sh script: 
#!/bin/sh 

dd if=/dev/urandom of=./qspi_test bs=1M count=6 
mtd_debug write /dev/mtd5 0 6291456 qspi_test 
mtd_debug erase /dev/mtd5 0 6291456 
mtd_debug read /dev/mtd5 0 6291456 qspi_read 
hexdump qspi_read 
mtd_debug write /dev/mtd5 0 6291456 qspi_test 
mtd_debug read /dev/mtd5 0 6291456 qspi_read 
sha1sum qspi_test qspi_read 

The two SHA-1 sums must be the same to pass this test. 

Here's an example on how to dumps the sysfs entries:
zynq> cat /sys/bus/spi/devices/spi0.0/spi-nor/partname
s25hl02gt
zynq> cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
342a1c0f0090
zynq> cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
spansion
zynq> xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp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zynq> md5sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
86aef254bcfdf763bdb92e4c31667242  /sys/bus/spi/devices/spi0.0/spi-nor/sfdp

Thanks!

-- 
Cheers,
ta