Hi Stephen,
On 14 August 2015 at 10:58, Stephen Warren swarren@wwwdotorg.org wrote:
On 08/14/2015 10:50 AM, Simon Glass wrote:
Hi Bin,
On 14 August 2015 at 03:18, Bin Meng bmeng.cn@gmail.com wrote:
Hi,
Currently there are 5 dm serial drivers, all of which are ns16550 compatible drivers. They are:
serial_omap.c serial_dw.c serial_tegra.c serial_x86.c serial_ppc.c
All these drivers are pretty much similar. I think we can justmerge these into one ns16550 driver.
If you think this is necessary, I will send a patch series to do this.
The tegra one is there because it needs an input clock and Stephen didn't want to add this to the device tree binding (the kernel has a clock framework which gets around this problem).
After that I followed the same pattern. I would support updating the binding to support an input clock. Even with the new clock framework in U-Boot it might be painful to fit it into SPL in some cases.
The clock is already in the DT, in both Linux and U-Boot's copy, at least for Tegra DTs:
uarta: serial@0,70006000 { compatible = "nvidia,tegra124-uart", ...... clocks = <&tegra_car TEGRA124_CLK_UARTA>;
I mean the clock-frequency property. However if there is a plan to implement the clock framework in U-Boot that would be good too.
Regards, Simon