linux-kernel - Re: [PATCHv2] mfd: intel-lpss-pci: fix clock speed for 38a8 UART

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Date:   Mon, 29 Nov 2021 12:11:13 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Orlando Chamberlain <redecorating@...tonmail.com>
Cc:     andriy.shevchenko@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2] mfd: intel-lpss-pci: fix clock speed for 38a8 UART

On Wed, 24 Nov 2021, Orlando Chamberlain wrote:

> This device is found in the MacBookPro16,2, and as the MacBookPro16,1 is
> from the same generation of MacBooks and has a UART with bxt_uart_info,
> it was incorrectly assumed that the MacBookPro16,2's UART would have the
> same info.
> 
> This led to the wrong clock speed being used, and the Bluetooth
> controller exposed by the UART receiving and sending random data, which
> was incorrectly assumed to be an issue with the Bluetooth stuff, not an
> error with the UART side of things.
> 
> Changing the info to spt_uart_info changes the clock speed and makes it
> send and receive data correctly.
> 
> Fixes: ddb1ada416fd ("mfd: intel-lpss: Add support for MacBookPro16,2 ICL-N UART")
> Signed-off-by: Orlando Chamberlain <redecorating@...tonmail.com>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> v1 -> v2: Remove blank line in tag block, add Reviewed-by.
>  drivers/mfd/intel-lpss-pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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