RE: [PATCH] rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225

[Max Chou <max.chou@realtek.com>]

Hi! Juerg,
Realtek implements a driver patch to meet the condition as your suggestion.
Please check the commit from the patchwork.
https://patchwork.kernel.org/project/bluetooth/patch/20230804055426.6806-1-max.chou@realtek.com/

For the patch on linux-firmware project, it will be submitted when the above driver patch is approved.

BRs,
Max


> -----Original Message-----
> From: Juerg Haefliger <juerg.haefliger@canonical.com>
> Sent: Thursday, August 3, 2023 12:49 PM
> To: Josh Boyer <jwboyer@kernel.org>
> Cc: Hilda Wu <hildawu@realtek.com>; linux-firmware@kernel.org;
> Larry.Finger@lwfinger.net; Max Chou <max.chou@realtek.com>;
> alex_lu@realsil.com.cn; 陳霂華 <mu_hua_chen@realtek.com>; Hsin Yu
> Chang <hsinyu_chang@realtek.com>; KidmanLee <kidman@realtek.com>
> Subject: Re: [PATCH] rtl_bt: Update RTL8852C BT USB firmware to
> 0x040D_7225
> 
> Josh, Realtek,
> 
> Any comments?
> 
> Thanks
> ...Juerg
> 
> 
> > Josh,
> >
> >
> > > Applied and pushed out.
> > >
> > > josh
> > >
> > > On Wed, Jun 7, 2023 at 4:28 AM <hildawu@realtek.com> wrote:
> > > >
> > > > From: Hilda Wu <hildawu@realtek.com>
> > > >
> > > > This firmware patch update for Realtek RTL8852C BT USB controller
> > > >
> > > > Note: This firmware patch needs to be used with driver
> > > > "btrtl: Firmware format v2 support". Please update the driver with
> > > > this commit: 9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa
> >
> > Do I understand this correctly that kernels that don't have this patch
> > (any kernel < 6.4) can no longer load this v2 BT firmware because it's
> > not compatible with old drivers? That's a regression, no? The
> > incompatible new firmware should be named differently so that we don't
> break old kernels.
> >
> > The v2 driver [1] seems to support both the old and new firmware
> > binary so IMO should try to load the new firmware first and fall back
> > to the old one if not found.
> >
> > Unless I'm misreading this.
> >
> > ...Juerg
> >
> > [1]
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/com
> > mit/?id=9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa
> >
> >
> >
> > > > Release Version: 0x040D_7225
> > > >
> > > > Signed-off-by: Hilda Wu <hildawu@realtek.com>
> > > > ---
> > > >  rtl_bt/rtl8852cu_fw.bin | Bin 113336 -> 112953 bytes
> > > >  1 file changed, 0 insertions(+), 0 deletions(-)
> 
> 
> ------Please consider the environment before printing this e-mail.