[PATCH RFC 4/8] soc: Add information to identify the J742S2 SoC family

[Manorit Chawdhry]

Hi Udit,

On 19:37-20241222, Kumar, Udit wrote:
> 
> On 12/17/2024 4:37 PM, Manorit Chawdhry wrote:
> > J742S2 has the same part number as J784S4 but JTAG_DEVICE_ID has a
> > PKG bit that tells about J742S2.
> > 
> > Add support for reading JTAG_DEVICE_ID and set family as J742S2 based
> > on that.
> > 
> > Link: https://www.ti.com/lit/pdf/spruje3 (TRM)
> > Signed-off-by: Manorit Chawdhry <m-chawdhry at ti.com>
> > ---
[..]
> > diff --git a/drivers/soc/soc_ti_k3.c b/drivers/soc/soc_ti_k3.c
> > index a3acca4d394273aad53efd3eee200ecdda50c31b..f8e64395ae3f18513837a88cf91d340fc11bb346 100644
> > --- a/drivers/soc/soc_ti_k3.c
> > +++ b/drivers/soc/soc_ti_k3.c
> > @@ -18,9 +18,14 @@ struct soc_ti_k3_plat {
> >   static const char *get_family_string(u32 idreg)
> >   {
> >   	const char *family;
> > +	u32 jtag_dev_id;
> > +	u32 pkg;
> >   	u32 soc;
> > +	jtag_dev_id = readl(CTRLMMR_WKUP_JTAG_DEVICE_ID);
> 
> Please check, if this register is available for all k3 devices.
> 
> if not then please move this logic under J784S4 SOC.
> 
> Second compilation will fail for few k3 devices , which does not define
> CTRLMMR_WKUP_JTAG_DEVICE_ID

Ah yeah, thanks for catching it!

Will fix it in the next revision.

Regards,
Manorit