Re: [PATCH do not merge 4/4] wifi: mwifiex: add iw61x support

[Sascha Hauer <s.hauer@pengutronix.de>]

Hi Francesco,

On Wed, Mar 26, 2025 at 01:23:35PM +0100, Francesco Dolcini wrote:
> On Wed, Mar 26, 2025 at 01:18:34PM +0100, Sascha Hauer wrote:
> > This adds iw61x aka SD9177 support to the mwifiex driver. It is named
> > SD9177 in the downstream driver, I deliberately chose the NXP name in
> > the driver.
> > 
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > ---
> >  drivers/net/wireless/marvell/mwifiex/sdio.c | 79 +++++++++++++++++++++++++++++
> >  drivers/net/wireless/marvell/mwifiex/sdio.h |  3 ++
> >  include/linux/mmc/sdio_ids.h                |  3 ++
> >  3 files changed, 85 insertions(+)
> > 
> > diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
> > index cbcb5674b8036..7b4045a40df57 100644
> > --- a/drivers/net/wireless/marvell/mwifiex/sdio.c
> > +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
> 
> ...
> 
> > @@ -3212,3 +3289,5 @@ MODULE_FIRMWARE(SD8978_SDIOUART_FW_NAME);
> >  MODULE_FIRMWARE(SD8987_DEFAULT_FW_NAME);
> >  MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
> >  MODULE_FIRMWARE(SD8997_SDIOUART_FW_NAME);
> > +MODULE_FIRMWARE(IW612_DEFAULT_FW_NAME);
> > +MODULE_FIRMWARE(IW612_SDIOUART_FW_NAME);
> > diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.h b/drivers/net/wireless/marvell/mwifiex/sdio.h
> > index 65d142286c46e..97759456314b0 100644
> > --- a/drivers/net/wireless/marvell/mwifiex/sdio.h
> > +++ b/drivers/net/wireless/marvell/mwifiex/sdio.h
> > @@ -29,6 +29,9 @@
> >  #define SD8987_DEFAULT_FW_NAME "mrvl/sd8987_uapsta.bin"
> >  #define SD8997_DEFAULT_FW_NAME "mrvl/sdsd8997_combo_v4.bin"
> >  #define SD8997_SDIOUART_FW_NAME "mrvl/sdiouart8997_combo_v4.bin"
> > +#define IW612_DEFAULT_FW_NAME "nxp/sdsd_nw61x.bin"
> > +#define IW612_SDIOUART_FW_NAME "nxp/sd_w61x.bin"
> 
> Is there a way to have BT over SDIO with iw61x? I was sure only sd-uart was
> possible.

The communication to the Bluetooth module indeed is UART only.

I think nxp/sdsd_nw61x.bin contains firmwares for both the WiFi and
Bluetooth chip. When using this you can use the Bluetooth UART directly
without uploading a separate Bluetooth firmware.

nxp/sd_w61x.bin only contains the WiFi firmware, so you have to
upload a separate Bluetooth firmware over the UART interface.

Sascha

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