回复: There is no kcs device in the /dev directory

[周 远清]

Error reported during kernel startup，Can you help to check where the configuration is wrong？

[    1.075901] ipmi-bt-host 1e789140.ibt: Using IRQ 33

[    1.076547] ast-kcs-bmc 1e789000.lpc-bmc:kcs1 at 0: no valid 'kcs_addr' configured

[    1.076743] ast-kcs-bmc 1e789000.lpc-bmc:kcs2 at 0: no valid 'kcs_addr' configured

[    1.076922] ast-kcs-bmc 1e789000.lpc-bmc:kcs3 at 0: no valid 'kcs_addr' configured

[    1.077102] ast-kcs-bmc 1e789080.lpc-host:kcs4 at 0: no valid 'kcs_addr' configured

[    1.083020] Serial: 8250/16550 driver, 6 ports, IRQ sharing enabled

The configure in aspeed_gt.dts:
 lpc_bmc: lpc-bmc at 0 {
                                        compatible = "aspeed,ast2500-lpc-bmc", "simple-mfd", "syscon";
                                        reg = <0x0 0x80>;
                                        reg-io-width = <4>;

                                        #address-cells = <1>;
                                        #size-cells = <1>;
                                        ranges = <0x0 0x0 0x80>;

                                        kcs1: kcs1 at 0 {
                                                compatible = "aspeed,ast2500-kcs-bmc";
                                                interrupts = <8>;
                                                kcs_chan = <1>;
                                                status = "disabled";
                                        };
                                        kcs2: kcs2 at 0 {
                                                compatible = "aspeed,ast2500-kcs-bmc";
                                                interrupts = <8>;
                                                kcs_chan = <2>;
                                                status = "disabled";
                                        };
                                        kcs3: kcs3 at 0 {
                                                compatible = "aspeed,ast2500-kcs-bmc";
                                                interrupts = <8>;
                                                kcs_chan = <3>;
                                                status = "disabled";
                                        };
                                };


The configure in aspeed-bmc-opp-star.dts:
&kcs1 {
        status = "okay";
};

&kcs2 {
        status = "okay";
};

&kcs3 {
        status = "okay";
};

&kcs4 {
        status = "okay";
};

&ibt {
        status = "okay";
};


________________________________
发件人: 郁雷 <yulei.sh at bytedance.com>
发送时间: 2020年6月18日 13:25
收件人: 周 远清 <zhouyuanqing8 at outlook.com>
抄送: openbmc <openbmc at lists.ozlabs.org>; uperic at 163.com <uperic at 163.com>
主题: Re: There is no kcs device in the /dev directory

On Thu, Jun 18, 2020 at 12:51 PM 周 远清 <zhouyuanqing8 at outlook.com> wrote:
>
> Hi everyone,
>
>     There is no kcs device in the /dev directory，I used the following command to find it in the root directory, and I did not find ipmi-kcs device, please help guide, thank you.

Probably you could check the device tree to see if the kcs is enabled or not.

>
> 1.find / -name *kcs*
>
> 2.Below is my kernel configuration
> CONFIG_SERIAL_MCTRL_GPIO=y
> # CONFIG_SERIAL_DEV_BUS is not set
> # CONFIG_TTY_PRINTK is not set
> # CONFIG_HVC_DCC is not set
> CONFIG_IPMI_HANDLER=y
> # CONFIG_IPMI_PANIC_EVENT is not set
> # CONFIG_IPMI_DEVICE_INTERFACE is not set
> # CONFIG_IPMI_SI is not set
> # CONFIG_IPMI_SSIF is not set
> # CONFIG_IPMI_WATCHDOG is not set
> # CONFIG_IPMI_POWEROFF is not set
> CONFIG_IPMI_KCS_BMC=y
> CONFIG_ASPEED_KCS_IPMI_BMC=y
> CONFIG_ASPEED_BT_IPMI_BMC=y
> CONFIG_HW_RANDOM=y
> CONFIG_HW_RANDOM_TIMERIOMEM=y
> # CONFIG_RAW_DRIVER is not set
> # CONFIG_TCG_TPM is not set
> # CONFIG_XILLYBUS is not set
> # end of Character devices
>
> Thanks
> Harley
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