hi guys
tested for VIM2
i try activate usb-otg in device mode for mainline kernel without success ;(
for legacy kernel its works fine if we change dts
dwc2_a {
compatible = "amlogic, dwc2";
device_name = "dwc2_a";
reg = <0x0 0xc9100000 0x0 0x40000>;
status = "okay";
interrupts = <0 31 4>;
pl-periph-id = <0>; /** lm name */
clock-src = "usb0"; /** clock src */
port-id = <0>; /** ref to mach/usb.h */
port-type = <2>; /** 0: otg, 1: host, 2: slave */
port-speed = <0>; /** 0: default, high, 1: full */
port-config = <0>; /** 0: default */
port-dma = <0>; /** 0: default ... 6: disable*/
port-id-mode = <0>; /** 0: hardware, 1: sw_host, 2: sw_slave*/
usb-fifo = <728>;
cpu-type = "gxl";
// controller-type = <3>; /** 0: normal,1:host,2:device,3:otg*/
// force change to device
controller-type = <2>; /** 0: normal,1:host,2:device,3:otg*/
phy-reg = <0xd0078000>;
phy-reg-size = <0xa0>;
clocks = <&clkc CLKID_USB_GENERAL
&clkc CLKID_USB1_TO_DDR
&clkc CLKID_USB1>;
clock-names = "usb_general",
"usb1",
"usb1_to_ddr";
};
but for mainline I’m confused !!! becouse dwc2 definition is missed ;(
i have try write something like this ( i’m not dts guru )
make dtbs its okay
/tmp/linux-5.3-rc4/arch/arm64/boot/dts/amlogic$ grep usb1 meson-gxl.dtsi -A30
usb1: usb@c9100000 {
status = "okay";
compatible = "amlogic,meson-gxl-dwc3";
#address-cells = <2>;
#size-cells = <2>;
ranges;
clocks = <&clkc CLKID_USB>,
<&clkc CLKID_USB1_DDR_BRIDGE>;
clock-names = "usb_otg";
resets = <&reset RESET_USB_OTG>;
reset-names = "usb_otg";
dwc2: dwc2@c9100000 {
// compatible = "snps,dwc2";
compatible = "amlogic,meson-g12a-usb", "snps,dwc2";
reg = <0x0 0xc9100000 0x0 0x400000>;
interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
// dr_mode = "device";
maximum-speed = "high-speed";
dr_mode = "peripheral";
snps,dis_u2_susphy_quirk;
phys = <&usb2_phy0>;
};
};
};
and of cause its wrong
root@(none):/# dmesg | grep dwc
[ 0.396135] dwc3 c9000000.dwc3: Failed to get clk 'ref': -2
[ 0.397304] dwc2 c9100000.dwc2: c9100000.dwc2 supply vusb_d not found, using dummy regulator
[ 0.397382] dwc2 c9100000.dwc2: c9100000.dwc2 supply vusb_a not found, using dummy regulator
[ 0.397581] dwc2 c9100000.dwc2: dwc2_core_reset: HANG! Soft Reset timeout GRSTCTL GRSTCTL_CSFTRST
[ 0.397737] dwc2: probe of c9100000.dwc2 failed with error -16
anybody can help me ? its possible for mainline or totally broken ???
tnx for any helps