Hi Simon, On Sun, Dec 28, 2014 at 9:55 AM, Simon Glass <s...@chromium.org> wrote: > On 27 December 2014 at 05:10, Bin Meng <bmeng...@gmail.com> wrote: >> Use ePAPR defined properties for x86-uart: clock-frequency and >> current-speed. Assign the value of clock-frequency in device tree >> to plat->clock of x86-uart instead of using hardcoded number. >> >> Signed-off-by: Bin Meng <bmeng...@gmail.com> > >> >> --- >> >> Changes in v2: >> - New patch to use ePAPR defined properties for x86-uart >> >> arch/x86/dts/serial.dtsi | 5 ++--- >> drivers/serial/serial_x86.c | 8 +++++++- >> 2 files changed, 9 insertions(+), 4 deletions(-) >> >> diff --git a/arch/x86/dts/serial.dtsi b/arch/x86/dts/serial.dtsi >> index ebdda76..9b097f4 100644 >> --- a/arch/x86/dts/serial.dtsi >> +++ b/arch/x86/dts/serial.dtsi >> @@ -3,8 +3,7 @@ >> compatible = "x86-uart"; >> reg = <0x3f8 8>; >> reg-shift = <0>; >> - io-mapped = <1>; >> - multiplier = <1>; >> - baudrate = <115200>; >> + clock-frequency = <1843200>; >> + current-speed = <115200>; > > Where is current speed used? If it is needed, please update the > binding at doc/device-tree-bindings/serial/ns16550.txt >
The current-speed is the baud rate of the serial port. Currently it is put there for ePAPR completeness and not used by U-Boot as U-Boot is using gd->baudrate for the serial console. [snip] Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
