I porting mainline kernel found common clock framework is not work

[LazyCat-xiao]

i can boot kernel 5.7 in my board and 5.8 or high is not boot. in 5.7 fimd is not have sclk_fimd.

[xc-racer99]

Interesting, what board is this on? I haven't had an issue with mainline v5.9-v5.10 while bisecting the display issues a week ago. I was using galaxys (i9000).

[LazyCat-xiao]

my board is similar as smdkv210, i use 5.10 only have uart and i cant entry console. and 5.7 i fonud the clock system is not init. the pll value is not set, i set 400mhz in uboot and kernel is running on 400mhz. and more sclk is zero. the sclk_uart and sclk_mmc not zero is init in uboot.

[xc-racer99]

What u-boot are you using? Are you using a vendor u-boot or my fork (from https://github.com/xc-racer99/u-boot-aries/) and what is your initial boot loader?

For your linux kernel, are you using my repo, mainline, or something else (if so, is it uploaded somewhere)?

[LazyCat-xiao]

sorry, my english is bad. but i want run kernel in 5.x to learn. it can run on 2.6 and 3.0 but now 5.11-rc. i use uboot in my repo ( https://github.com/LazyCat-xiao/x210-uboot202010/) and it is my bl2. uboot flash in my sd card. the kernel is 5.7.19 in mainline (i download in https://mirrors.tuna.tsinghua.edu.cn/kernel/). i look for the pll value in linux-5.7.19/driver/clk/samsung/clk-s5pv210.c, but i cant found any. it can work but not good.

[LazyCat-xiao]

i use RGB-LCD need set FIMD clock in UBOOT. when i not set in UBOOT it cant work. More peripherals clock is zero.

[MateuszKrawczuk]

Could you share with me the vendor Linux kernel which is working with your board? I will look into the issue, but probably you need to change the value for in your board device tree. I would recommend check values set for: xxti: oscillator-0 { compatible = "fixed-clock"; clock-frequency = <0>; clock-output-names = "xxti";

clock-cells = <0>;

};

xusbxti: oscillator-1 {
    compatible = "fixed-clock";
    clock-frequency = <0>;
    clock-output-names = "xusbxti";
    #clock-cells = <0>;
};

[LazyCat-xiao]

in s5pv210.dsi xxti is 0, and i add xxti 24MHz in my dts more peripherals clock is not 0. thanks