[PATCH 00/11] mtd: spi-nor: Isolate stacked/parallel support from core

[Begari, Padmarao]

[AMD Official Use Only - AMD Internal Distribution Only]

Hi Takahiro Kuwano,

Apologies for the delay in responding and thank you for sending this patch series. Since the changes are related to our AMD stacked and parallel configurations, we’ll look into it.

Thanks & Regards
Padmarao

> -----Original Message-----
> From: U-Boot <u-boot-bounces at lists.denx.de> On Behalf Of Takahiro Kuwano via
> B4 Relay
> Sent: Wednesday, November 19, 2025 10:43 AM
> To: u-boot at lists.denx.de; Tudor Ambarus <tudor.ambarus at linaro.org>
> Cc: Jagan Teki <jagan at amarulasolutions.com>; Simek, Michal
> <michal.simek at amd.com>; Tom Rini <trini at konsulko.com>; Erkiaga Elorza, Ibai
> <ibai.erkiaga-elorza at amd.com>; Vignesh R <vigneshr at ti.com>; Kummari, Prasad
> <Prasad.Kummari at amd.com>; Marek Vasut
> <marek.vasut+renesas at mailbox.org>; Mutya, Havish <havish.mutya at amd.com>;
> Ashok Reddy Soma <ashok.reddy.soma at amd.com>; Venkatesh Yadav Abbarapu
> <venkatesh.abbarapu at amd.com>; Daassi Bacem
> <Bacem.Daassi at infineon.com>; Shinsuke Okada
> <Shinsuke.Okada at infineon.com>; Hiroyuki Saito
> <Hiroyuki.Saito2 at infineon.com>; Takahiro Kuwano <tkuw584924 at gmail.com>;
> Takahiro Kuwano <Takahiro.Kuwano at infineon.com>
> Subject: [PATCH 00/11] mtd: spi-nor: Isolate stacked/parallel support from core
>
> This series suggests to isolate stacked/parallel support from spi-nor-core by
> moving that to SPI controllers and new modules under mtd/spi.
>
> The patchset mainly focuses on removing references to stacked/parallel related
> items from core. The stacked/parallel support logic itself may have rooms to
> improve. Rework or further cleanup in stacked/parallel support would be done by
> other patches after this series is applied.
>
> Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano at infineon.com>
> ---
> Takahiro Kuwano (11):
>       spi: zynqmp-gqspi: Set priv->is_parallel in child_pre_probe()
>       spi: zynqmp_gqspi: Remove reference to SPI_XFER_LOWER flag.
>       spi: zynqmp_gqspi: Read two bytes of SR and FSR in parallel mode
>       spi: zynq-qspi: Set priv->is_parallel/stacked in child_pre_probe()
>       spi: zynq_qspi: Remove reference to SPI_XFER_LOWER flag.
>       spi: zynq_qspi: Read two bytes of SR and FSR in parallel mode
>       mtd: spi-nor: Migrate stacked/parallel part to new modules
>       mtd: spi-nor: stacked: Cleanup stacked/parallel flags
>       mtd: spi-nor: parallel: Cleanup stacked/parallel flags
>       mtd: spi-nor: Revert stacked/parallel related commits
>       mtd: spi-nor: Call stacked/parallel post init fixups
>
>  drivers/mtd/spi/Makefile       |   4 +
>  drivers/mtd/spi/parallel.c     | 412
> ++++++++++++++++++++++++++++++++++++++++
>  drivers/mtd/spi/sf_internal.h  |  18 ++  drivers/mtd/spi/spi-nor-core.c | 422
> +++++++----------------------------------
>  drivers/mtd/spi/stacked.c      | 389
> +++++++++++++++++++++++++++++++++++++
>  drivers/spi/zynq_qspi.c        |  47 +++--
>  drivers/spi/zynqmp_gqspi.c     |  55 ++++--
>  include/linux/mtd/spi-nor.h    |  10 -
>  include/spi.h                  |   2 -
>  9 files changed, 973 insertions(+), 386 deletions(-)
> ---
> base-commit: e2d51f8db207f7db70dd8104fa1da2cffda419f2
> change-id: 20251118-amd-cleanup-c8023872e3cf
>
> Best regards,
> --
> Takahiro Kuwano <Takahiro.Kuwano at infineon.com>
>