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Re: drivers/tty/serial/max310x doesn't support latest UART revision of MAX14830

Started byGreg KH <gregkh@linuxfoundation.org>
First post2016-10-19 16:40 +0200
Last post2016-10-19 17:20 +0200
Articles 2 — 1 participant

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  Re: drivers/tty/serial/max310x doesn't support latest UART revision  of MAX14830 Greg KH <gregkh@linuxfoundation.org> - 2016-10-19 16:40 +0200
    Re: drivers/tty/serial/max310x doesn't support latest UART revision  of MAX14830 Greg KH <gregkh@linuxfoundation.org> - 2016-10-19 17:20 +0200

#1503726 — Re: drivers/tty/serial/max310x doesn't support latest UART revision of MAX14830

FromGreg KH <gregkh@linuxfoundation.org>
Date2016-10-19 16:40 +0200
SubjectRe: drivers/tty/serial/max310x doesn't support latest UART revision of MAX14830
Message-ID<su0cb-2v4-101@gated-at.bofh.it>
On Wed, Oct 19, 2016 at 10:25:41AM +0200, Roberto Sara wrote:
> Kernel 4.4.22

That's pretty old and obsolete, can you try 4.8?

> MAX310x_REV_MASK has a value of 0xfc which only allows for UART revisions of
> 0xb0 to 0xb3.
> 
> The latest MAX14830 UARTS have revision number 0xb4.  The data sheet only
> states that revisions start at 0xb0.
> 
> I suggest a change of MAX310x_REV_MASK to 0xf8, which will allow revisions up
> to 0xb7

Great, can you send a patch that you have tested to work properly?

thanks,

greg k-h

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#1503867

FromGreg KH <gregkh@linuxfoundation.org>
Date2016-10-19 17:20 +0200
Message-ID<su0OS-308-41@gated-at.bofh.it>
In reply to#1503726
On Wed, Oct 19, 2016 at 10:53:24AM +0200, Roberto Sara wrote:
> Sorry, 4.4 is the latest I can get for this embedded system. 
> A quick check online shows that 4.8.2 has the same value and detection routine.

Great, can you send a patch please?

greg k-h

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