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From: Josh Boyer <>
To: Hans de Goede <>
Cc: Linux Firmware <>
Subject: Re: [PATCH] Add symlink for Dell XPS 15 9550 Broadcom Bluetooth patch-ram file
Date: Mon, 20 Apr 2020 18:31:27 -0400
Message-ID: <> (raw)
In-Reply-To: <>

On Fri, Apr 17, 2020 at 12:20 PM Hans de Goede <> wrote:
> The linux-firmware repo does not contain many Broadcom (now Cypress)
> Bluetooth patch-ram files, because we have never been able to get
> permission to re-distribute those.
> We do have one file for the for HTC Vive, which was submitted by HTC
> themselves with permission from Cypress.
> That file contain a "BCM20703A1 Generic USB 20Mhz fcbga_BU" patch-ram
> build. The patch-ram files used by Windows for the Bluetooth module
> in the XPS 15 9550, USB-id 0a5c:6410 is also a "BCM20703A1 Generic
> USB 20Mhz fcbga_BU" patch-ram build. Since the build-parameters
> (crystal MHz, package/module type used) between the 2 builds are an
> exact match we can also use the HTC submitted patch-ram for the
> XPS 15 9550. So lets add a symlink for this.
> This will make the Bluetooth on the XPS 15 9550 work out of the box,
> when linux-firmware is installed, without the user needing to go and
> find a suitable patch-ram file themselves.
> This has been tested on a XPS 15 9550 with both Bluetooth HID and
> Bluetooth audio devices.
> Signed-off-by: Hans de Goede <>
> ---
>  WHENCE                 | 1 +
>  brcm/BCM-0a5c-6410.hcd | 1 +
>  2 files changed, 2 insertions(+)
>  create mode 120000 brcm/BCM-0a5c-6410.hcd

It should be possible to do this by simply using the Link directive in
the WHENCE file.  That will create the symlink at installation time.
It's a fairly recent enhancement.  I'll look at it tomorrow and adjust
if so.


  reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-17 16:20 Hans de Goede
2020-04-20 22:31 ` Josh Boyer [this message]
2020-04-21  7:46   ` Hans de Goede
2020-04-21 11:47     ` Josh Boyer

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