linux-kernel - Re: [PATCH] serial: dw8250: Make DLF feature independent of ADDITIONAL

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Message-ID: <ZW3UP8hfI7_-TsVl@smile.fi.intel.com>
Date:   Mon, 4 Dec 2023 15:29:35 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc:     Dawei Li <dawei.li@...ngroup.cn>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>, jszhang@...nel.org,
        LKML <linux-kernel@...r.kernel.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        set_pte_at@...look.com, stable@...nel.org
Subject: Re: [PATCH] serial: dw8250: Make DLF feature independent of
 ADDITIONAL_FEATURE

On Mon, Dec 04, 2023 at 03:20:09PM +0200, Ilpo Järvinen wrote:
> On Mon, 4 Dec 2023, Dawei Li wrote:
> 
> > DW apb uart databook defines couples of configuration parameters of

DW_apb_uart (as it's part of file name, or spell this fully).

> > dw8250 IP, among which there are 2 of them:

DesignWare 8250 IP

...

> > The bug was hit when we are bringing up dw8250 IP on our hardware

Ditto.

> > platform, in which parameters are configured in such combination:
> > - ADDTIONAL_FEATURE disabled;
> > - FRACTIONAL_BAUD_DIVISOR_EN enabled;

...

> The very same code change is already in tty-next (from another author).

For your convenience:

d804987153e7 ("serial: 8250_dw: Decouple DLF register check from UCV")

-- 
With Best Regards,
Andy Shevchenko