[PATCH v4] driver: spi: add bcm iproc qspi support.

[Jagan Teki]

On Tue, Nov 2, 2021 at 4:57 AM Roman Bacik <roman.bacik at broadcom.com> wrote:
>
> Hi Jagan,
>
> On Mon, Nov 1, 2021 at 12:12 AM Jagan Teki <jagan at amarulasolutions.com> wrote:
> >
> > On Tue, Oct 26, 2021 at 1:07 AM Roman Bacik <roman.bacik at broadcom.com> wrote:
> > >
> > > From: Rayagonda Kokatanur <rayagonda.kokatanur at broadcom.com>
> > >
> > > IPROC qspi driver supports both BSPI and MSPI modes.
> > >
> > > Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur at broadcom.com>
> > > Signed-off-by: Bharat Gooty <bharat.gooty at broadcom.com>
> > > Acked-by: Rayagonda Kokatanur <rayagonda.kokatanur at broadcom.com>
> > >
> > > Signed-off-by: Roman Bacik <roman.bacik at broadcom.com>
> > > ---
> > >
> > > Changes in v4:
> > > - move iproc_qspi.c from spi to mtd/spi
> > > - remove iproc_qspi.h
> > > - rename IPROC_QSPI to SPI_FLASH_IPROC
> > >
> > > Changes in v3:
> > > - fix warning by including linux/delay.h
> > > - change ofdata_to_platdata to of_to_plat
> > > - change priv_auto_alloc_size to priv_auto
> > >
> > > Changes in v2:
> > > - remove include spi-nor.h
> > > - define and use named BITs for writing register values
> > > - remove bspi_set_4byte_mode() method
> > >
> > >  drivers/mtd/spi/Kconfig      |   6 +
> > >  drivers/mtd/spi/Makefile     |   1 +
> > >  drivers/mtd/spi/iproc_qspi.c | 718 +++++++++++++++++++++++++++++++++++
> > >  3 files changed, 725 insertions(+)
> > >  create mode 100644 drivers/mtd/spi/iproc_qspi.c
> >
> > Look like you confused what I've mentioned before, your driver is
> > flash specific so add a driver in UCLASS_SPI_FLASH. drivers with
> > UCLASS_SPI to be in drivers/spi/
> >
> > Jagan.
>
> This is a controller driver and it is currently meant to be used as follows:
>
> qspi: spi at 370000 {
>   compatible = "brcm,iproc-qspi";
>   reg = <0x00370000 0x100>,
>     <0x00370100 0x100>,
>     <0x00370200 0x200>;
>   reg-names = "bspi", "bspi_raf", "mspi";
>   flash-iomap-addr = /bits/ 64 <0x70000000>;
>   #address-cells = <1>;
>   #size-cells = <0>;
>   spi_nor_flash: spi_flash at 0 {
>     compatible = "jedec,spi-nor";
>     reg = <0>;
>     spi-max-frequency = <12500000>;
>     spi-cpol;
>     spi-cpha;
>     spi-tx-bus-width = <1>;
>     spi-rx-bus-width = <4>;
>   };
> };

Does this binding is from Linux? if yes please share Linux driver.

Jagan.