Hi Arnd,
Thank you very much for all your comments.
On 2015/12/3 17:36, Arnd Bergmann wrote:
> On Thursday 03 December 2015 10:44:28 Jiancheng Xue wrote:
>
>> +
>> +/dts-v1/;
>> +#include "hi3519.dtsi"
>> +
>> +/ {
>> + model = "HiSilicon HI3519 DEMO Board";
>> + compatible = "hisilicon,hi3519";
>> +
>> + chosen {
>> + bootargs = "mem=64M console=ttyAMA0,115200 early_printk \
>> +root=/dev/mtdblock2 rootfstype=jffs2 \
>> +mtdparts=hi_sfc:1M(boot),4M(kernel),11M(rootfs)";
>> + };
>
> Most of the arguments should be dropped and replaced with the respective
> DT properties in this file:
>
> mem: /memory (you have that already, but the size seems wrong)
> console: /chosen/stdout-path
> early_printk: just drop this, maybe use "earlycon")
> root: this one is fine
> rootfstype: should not be needed
> mtdparts: use nodes below the MTD device
>
This chosen node is just for debug. The real parameters will be set at boot stage.
I will drop it.
>> +
>> +#include "skeleton.dtsi"
>> +#include <dt-bindings/clock/hi3519-clock.h>
>> +/ {
>> + aliases {
>> + serial0 = &uart0;
>> + };
>
> Move this into the .dts file.
OK. Thank you.
>
>> +
>> + uart0: uart@12100000 {
>
> rename to serial@12100000
OK.
>
>> + dual_timer1: dual_timer@12001000 {
>> + compatible = "arm,sp804", "arm,primecell";
>> + interrupts = <0 66 4>, <0 67 4>;
>> + reg = <0x12001000 0x1000>;
>> + clocks = <&crg HI3519_FIXED_3M>;
>> + status = "disable";
>> + };
>
> rename to timer@12001000
OK.
>
>> + sysctrl: system-controller@12020000 {
>> + compatible = "hisilicon,sysctrl";
>> + reg = <0x12020000 0x1000>;
>> + reboot-offset = <0x4>;
>> + };
>
> Is this one identical to the one in hip04?
>
> If not, pick a new unique compatible string
Yes. It's compatible with the one in hip04.
>
>> +
>> + crg: crg@12010000 {
>> + compatible = "hisilicon,hi3519-crg";
>
>
> what is a "crg"? Is there a standard name for these?
The "crg" means Clock and Reset Generator. It's a block which supplies clock
and reset signals for other modules in the chip. I used "hi3519-clock"
in last version patch. Rob Herring suggested that it's better to use "hi3519-crg"
as the compatible string if it's a whole block.
what about writing like this？
crg: clock-reset-controller@12010000 {
compatible = "hisilicon,hi3519-crg";
}
>
> Arnd
>
> .
>
Jiancheng
.
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