Solved [A20 / Lamobo-R1 / kernel 4.6.1] USB issue

[wildcat_paris 102]

Hello,

 

for a piece of advice, I have compiled kernel 4.6.1 for Lamobo-R1, USB is KO, I am switching back to 4.5.5 in the meantime.

 

 

 

[gr:~] $ dmesg | grep usb
[    3.346361] reg-fixed-voltage usb0-vbus: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/usb0_vbus_pin@0, deferring probe
[    3.346404] reg-fixed-voltage usb1-vbus: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/usb1_vbus_pin@0, deferring probe
[    3.346445] reg-fixed-voltage usb2-vbus: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/usb2_vbus_pin@0, deferring probe
[    3.349520] usbcore: registered new interface driver usbfs
[    3.349626] usbcore: registered new interface driver hub
[    3.349786] usbcore: registered new device driver usb
[    3.628767] sun4i-usb-phy 1c13400.phy: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/usb0_id_detect_pin@0, deferring probe
[    3.822756] usbcore: registered new interface driver usb-storage
[    3.871262] usbcore: registered new interface driver usbhid
[    3.871276] usbhid: USB HID core driver
[    4.081634] usb0-vbus: disabling
[    4.081644] usb1-vbus: disabling
[    4.081659] usb2-vbus: disabling
[    8.568391] usbcore: registered new interface driver uas
[    8.682596] usbcore: registered new interface driver chaoskey

[gr:~] $ sudo lsusb

unable to initialize libusb: -99

 

 

 

[Igor 2301]

On a first quick look this looks like a bad power issues, but I guess you are only changing kernel?

[wildcat_paris 102]

wait, yes, both 4.6.1 kernel have -rt3

 

I have applied 4.6.1-RT3 patch, then tested again without 4.6.1-RT3 patch

 

but it seems the patch isn't removed from source => I will remove v4.6.1 folder and upload the kernel again

[wildcat_paris 102]

also my patch from 4.3.3 doesnt work any longer

it can explain the mess... I have left the CPU 1008 MHz  tweak in the patch

 

 

 

root@server1404:~/armbian/userpatches/kernel/sunxi-next# cat X101-golfromeo.cpu.gmac.patch
--- v4.3.3/arch/arm/boot/dts/sun7i-a20.dtsi     2015-12-24 19:45:36.704310828 +0100
+++ v4.3.3/arch/arm/boot/dts/sun7i-a20.dtsi     2015-12-25 22:59:41.876408694 +0100
@@ -98,9 +98,11 @@
                        device_type = "cpu";
                        reg = <0>;
                        clocks = <&cpu>;
+                       #clock-frequency = <960000000>;
                        clock-latency = <244144>; /* 8 32k periods */
                        operating-points = <
                                /* kHz    uV */
+                               1008000 1450000
                                960000  1400000
                                912000  1400000
                                864000  1300000
@@ -117,6 +119,8 @@
                cpu@1 {
                        compatible = "arm,cortex-a7";
                        device_type = "cpu";
+                       #clock-frequency = <960000000>;
+                       clocks = <&cpu>;
                        reg = <1>;
                };
        };
--- v4.3.3/arch/arm/boot/dts/sun7i-a20-lamobo-r1.dts    2015-12-26 02:47:14.894391945 +0100
+++ v4.3.3/arch/arm/boot/dts/sun7i-a20-lamobo-r1.dts    2015-12-26 02:58:20.600864573 +0100
@@ -187,6 +187,13 @@
                        phy-supply = <&reg_gmac_3v3>;
                        status = "okay";

+                       snps,pbl = <1>;
+                       tx-fifo-depth = <16384>;
+                       rx-fifo-depth = <8192>;
+                       snps,tx_coe = <1>;
+                       snps,rx_coe = <2>;
+                       snps,bugged_jumbo = <1>;
+
                        phy1: ethernet-phy@1 {
                                reg = <1>;
                        };
@@ -236,3 +243,31 @@
                status = "okay";
        };
 };
+
+&gmac {
+        pinctrl-names = "default";
+        pinctrl-0 = <&gmac_pins_rgmii_a>;
+        phy = <&phy1>;
+        phy-mode = "rgmii";
+        phy-supply = <&reg_gmac_3v3>;
+        status = "okay";
+
+        snps,pbl = <1>;
+        tx-fifo-depth = <16384>;
+        rx-fifo-depth = <8192>;
+        snps,tx_coe = <1>;
+        snps,rx_coe = <2>;
+        snps,bugged_jumbo = <1>;
+
+        phy1: ethernet-phy@1 {
+                reg = <1>;
+        };
+};
+
+&usb_otg {
+        usb1_vbus-supply = <&reg_usb1_vbus>;
+        usb2_vbus-supply = <&reg_usb2_vbus>;
+        dr_mode = "otg";
+        #dr_mode = "host";
+        status = "okay";
+};

 

 

[wildcat_paris 102]

So, I have retried kernel 4.6.1

- with SS PRNG patch

- with 1008 MHz patch

 

I have removed all kernel sources, removed the kernel 4.6.1-rt3 (realtime) patch

 

and yet I have the same errors with USB

 

so reloading again my deb packages with good working kernel 4.5.5

[Schwemmlandebene 8]

I can confirm some trouble with the combination of lamabo-r1, 4.6.1 and USB.

With standard linux-sunxi-next.config my USB keyboards work.

But after disabling some I2C drivers in the kernel configuration the board doesn't get any input from the keyboards.

On one keyboard the NumLock LED lits after hitting the key, on the other it does not.

 

$ sudo lsusb
unable to initialize libusb: -99

[wildcat_paris 102]

it seems (reading kernel 4.6 news released today in French) they added USB 3.1 support.

 

maybe something has changed in the DTB or kernel config... let's see later.

[zador.blood.stained 764]

R1 DTB was "officially" added in kernel 4.6 - so most probably new DT or some our patches cause this issue.

[wildcat_paris 102]

FYI I haven't found interesting changes related to USB, I will be looking at DTB

 

ok I see the file

http://lxr.free-electrons.com/source/arch/arm/boot/dts/sun7i-a20-lamobo-r1.dts

[wildcat_paris 102]

USB is back with kernel 4.6.2

 

Thank you