Re: [PATCHv2 0/4] ACPI / LPSS: Solution for two issues seen on Asus T100

[Mika Westerberg]

On Thu, May 15, 2014 at 11:59:46PM +0800, Li, Aubrey wrote:
> On 2014/5/15 22:53, Andy Shevchenko wrote:
> > On Thu, 2014-05-15 at 22:35 +0800, Li, Aubrey wrote:
> >> On 2014/5/15 21:40, Heikki Krogerus wrote:
> >>> Changes since v1:
> >>> - now using do_div() in clk_fd_recalc_rate() as suggested by Andy
> >>> - NULL checks for clk_name allocation in acpi_lpss.c
> >>>
> >>> This combines two patch sets for LPSS that I had already send for
> >>> review separately. They conflicted with each other.
> >>>
> >>> The first two patches will fix a problem were the context of the
> >>> private LPSS registers is lost when entering D3. The last two will add
> >>> support for the M/N dividers on LPSS by adding a new basic clock type
> >>> for fractional dividers. The UART driver needs support for it in order
> >>> to get clock rates that suit the requested baud rates.
> >>
> >> The major issue in my mind is, this proposal makes a couple between I2C
> >> designware, HSUART, or probably DMA driver as well with LPSS driver.
> > 
> > acpi_lpss driver creates platform devices for each found and enumerated
> > device.
> 
> > If there no acpi_lpss enabled the drivers work as supposed without it.
> 
> This is not true.

The drivers work fine on non-LPSS platform. If you make them depend on
acpi_lpss, you break that.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/