[U-Boot] [PATCH] serial: serial_sh: take into account port->clk_mode for SH7785/7786

[Thomas Petazzoni]

Hello,

On Mon, 28 Aug 2017 14:16:38 +0200, Thomas Petazzoni wrote:
> In the SH7785/SH7786 case, the SCSCR value is harcoded to be 0x3a,
> which means bits CKE1/CKE0 have the value 10b. This tells the SCIF
> that the "External clock/SCIF_SCK pin functions as clock input".
> 
> However, this is not the case in all designs, and it's the purpose of
> the clk_mode = EXT_CLK to indicate such a setting.
> 
> In order for the serial_sh driver to work on a SH7786 platform that
> does not use SCIF_SCK as a clock input, we have to adjust the
> SCSCR_INIT value, to have CKE1/CKE0 set to 00b. This is similar to
> what is done for other SH platforms.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>

Any comments on this patch ?

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com