On Mon, Jul 22, 2024 at 6:29 PM Minda Chen <minda.c...@starfivetech.com> wrote: > > > > > > > On Sat, Jul 20, 2024 at 6:47 PM E Shattow <luc...@gmail.com> wrote: > > > > > > Hi, I am testing on Milk-V Mars CM Lite, and I add to these devicetree > > > changes at runtime from board/starfive/visionfive2/spl.c > > > > > > On Thu, Jul 18, 2024 at 6:38 PM Minda Chen <minda.c...@starfivetech.com> > > wrote: > > > > > > > > Add Jh7110 Cadence USB dts node, Visionfive2 default setting is USB > > > > 2.0 device. > > > > > > > > Signed-off-by: Minda Chen <minda.c...@starfivetech.com> > > > > --- > > > > .../dts/jh7110-starfive-visionfive-2.dtsi | 5 ++ > > > > arch/riscv/dts/jh7110.dtsi | 52 > > +++++++++++++++++++ > > > > 2 files changed, 57 insertions(+) > > > > > > > > diff --git a/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi > > > > b/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi > > > > index e11babc1cd..44785bbee3 100644 > > > > --- a/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi > > > > +++ b/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi > > > > @@ -378,3 +378,8 @@ > > > > }; > > > > }; > > > > }; > > > > + > > > > +&usb_cdns3 { > > > > + dr_mode = "peripheral"; > > > > + status = "okay"; > > > > +}; > > > > diff --git a/arch/riscv/dts/jh7110.dtsi b/arch/riscv/dts/jh7110.dtsi > > > > index 2cdc683d49..1eee924e1d 100644 > > > > --- a/arch/riscv/dts/jh7110.dtsi > > > > +++ b/arch/riscv/dts/jh7110.dtsi > > > > @@ -371,6 +371,58 @@ > > > > status = "disabled"; > > > > }; > > > > > > > > + usb0: usb@10100000 { > > > > + compatible = "starfive,jh7110-usb"; > > > > + ranges = <0x0 0x0 0x10100000 0x100000>; > > > > + #address-cells = <1>; > > > > + #size-cells = <1>; > > > > + starfive,stg-syscon = <&stg_syscon 0x4>; > > > > + clocks = <&stgcrg > > JH7110_STGCLK_USB_LPM>, > > > > + <&stgcrg > > JH7110_STGCLK_USB_STB>, > > > > + <&stgcrg > > JH7110_STGCLK_USB_APB>, > > > > + <&stgcrg > > JH7110_STGCLK_USB_AXI>, > > > > + <&stgcrg > > JH7110_STGCLK_USB_UTMI_APB>; > > > > + clock-names = "lpm", "stb", "apb", "axi", > > "utmi_apb"; > > > > + resets = <&stgcrg > > JH7110_STGRST_USB_PWRUP>, > > > > + <&stgcrg > > JH7110_STGRST_USB_APB>, > > > > + <&stgcrg > > JH7110_STGRST_USB_AXI>, > > > > + <&stgcrg > > JH7110_STGRST_USB_UTMI_APB>; > > > > + reset-names = "pwrup", "apb", "axi", > > > > + "utmi_apb"; > > > > + > > > > + usb_cdns3: usb@0 { > > > > + compatible = "cdns,usb3"; > > > > + reg = <0x0 0x10000>, > > > > + <0x10000 0x10000>, > > > > + <0x20000 0x10000>; > > > > + reg-names = "otg", "xhci", "dev"; > > > > + interrupts = <100>, <108>, <110>; > > > > + interrupt-names = "host", > > "peripheral", "otg"; > > > > + phys = <&usbphy0>; > > > > + phy-names = "cdns3,usb2-phy"; > > > > + }; > > > > + }; > > > > + > > > > + usbphy0: phy@10200000 { > > > > + compatible = "starfive,jh7110-usb-phy"; > > > > + reg = <0x0 0x10200000 0x0 0x10000>; > > > > + clocks = <&syscrg > > JH7110_SYSCLK_USB_125M>, > > > > + <&stgcrg > > JH7110_STGCLK_USB_APP_125>; > > > > + clock-names = "125m", "app_125m"; > > > > + #phy-cells = <0>; > > > > + }; > > > > + > > > > + pciephy0: phy@10210000 { > > > > + compatible = "starfive,jh7110-pcie-phy"; > > > > + reg = <0x0 0x10210000 0x0 0x10000>; > > > > + #phy-cells = <0>; > > > > + }; > > > > + > > > > + pciephy1: phy@10220000 { > > > > + compatible = "starfive,jh7110-pcie-phy"; > > > > + reg = <0x0 0x10220000 0x0 0x10000>; > > > > + #phy-cells = <0>; > > > > + }; > > > > + > > > > stgcrg: clock-controller@10230000 { > > > > compatible = "starfive,jh7110-stgcrg"; > > > > reg = <0x0 0x10230000 0x0 0x10000>; > > > > -- > > > > 2.17.1 > > > > > > > > > > Access fault > > > > > > starting USB... > > > Bus usb@0: cdns-usb3-host usb@0: set 1 has failed, back to 0 > > > scanning bus usb@0 for devices... Unhandled exception: Load > > access fault > > > EPC: 00000000fff85ce2 RA: 00000000fff85cdc TVAL: > > 0000000000000004 > > > EPC: 0000000040246ce2 RA: 0000000040246cdc reloc adjusted > > > > > > Code: 9863 3ee7 8526 f0ef c37f 651c 3a03 0105 (43dc) > > > > > > > > > resetting ... > > > > > > when I add only these: > > > > > > int offset; > > > > > > offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000"); /* > > &sysgpio */ > > > fdt_add_subnode(fdt, offset, "usb0-0"); > > > fdt_setprop_string(fdt, fdt_path_offset(fdt, "/__symbols__"), > > > "usb_pins", "/soc/pinctrl@13040000/usb0-0"); > > > offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0"); > > > /* usb_pins */ > > > fdt_create_phandle(fdt, offset); > > > fdt_add_subnode(fdt, offset, "driver-vbus-pin"); > > > offset = fdt_path_offset(fdt, > > > "/soc/pinctrl@13040000/usb0-0/driver-vbus-pin"); > > > fdt_setprop_u32(fdt, offset, "pinmux", 0xff070019); /* > > > GPIOMUX(25, GPOUT_SYS_USB_DRIVE_VBUS, GPOEN_ENABLE, GPI_NONE) > > */ > > > fdt_setprop_empty(fdt, offset, "bias-disable"); > > > fdt_setprop_empty(fdt, offset, "input-disable"); > > > fdt_setprop_empty(fdt, offset, "input-schmitt-disable"); > > > fdt_setprop_u32(fdt, offset, "slew-rate", 0); > > > > > > offset = fdt_path_offset(fdt, "/soc/usb@10100000"); /* &usb0 */ > > > fdt_setprop_string(fdt, offset, "pinctrl-names", "default"); > > > fdt_setprop_u32(fdt, offset, "pinctrl-0", fdt_get_phandle(fdt, > > > fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0"))); > > > fdt_setprop_string(fdt, offset, "status", "okay"); > > > > > > offset = fdt_path_offset(fdt, "/soc/usb@10100000/usb@0"); /* > > > &usb_cdns3 */ > > > fdt_setprop_string(fdt, offset, "dr_mode", "host"); > > > > > > Success USB is working but PCI disabled if instead I add all of this: > > >
> I checked t Milk-V CM board do not contain USB3.0 host > So I think the USB 3.0 configuration is not required. I agree it should be USB 2.0, but with your patch this is the only configuration that does anything successful with USB2.0 or 3.0 > > > > int offset; > > > > > > offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000"); /* > > &sysgpio */ > > > fdt_add_subnode(fdt, offset, "usb0-0"); > > > fdt_setprop_string(fdt, fdt_path_offset(fdt, "/__symbols__"), > > > "usb_pins", "/soc/pinctrl@13040000/usb0-0"); > > > offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0"); > > > /* usb_pins */ > > > fdt_create_phandle(fdt, offset); > > > fdt_add_subnode(fdt, offset, "driver-vbus-pin"); > > > offset = fdt_path_offset(fdt, > > > "/soc/pinctrl@13040000/usb0-0/driver-vbus-pin"); > > > fdt_setprop_u32(fdt, offset, "pinmux", 0xff070019); /* > > > GPIOMUX(25, GPOUT_SYS_USB_DRIVE_VBUS, GPOEN_ENABLE, GPI_NONE) > > */ > > > fdt_setprop_empty(fdt, offset, "bias-disable"); > > > fdt_setprop_empty(fdt, offset, "input-disable"); > > > fdt_setprop_empty(fdt, offset, "input-schmitt-disable"); > > > fdt_setprop_u32(fdt, offset, "slew-rate", 0); > > > > > > offset = fdt_path_offset(fdt, "/soc/pcie@2b000000"); /* &pcie0 */ > > > fdt_setprop_string(fdt, offset, "status", "disabled"); > > > > > > offset = fdt_path_offset(fdt, "/soc/phy@10210000"); /* &pciephy0 > > */ > > > fdt_setprop_u32(fdt, offset, "starfive,sys-syscon", > > > fdt_get_phandle(fdt, fdt_path_offset(fdt, > > > "/soc/sys_syscon@13030000"))); /* = <&sys_syscon> */ > > > fdt_appendprop_u32(fdt, offset, "starfive,sys-syscon", 0x18); > > > /* append <magic number> */ > > > fdt_setprop_u32(fdt, offset, "starfive,stg-syscon", > > > fdt_get_phandle(fdt, fdt_path_offset(fdt, > > > "/soc/stg_syscon@10240000"))); /* = <&stg_syscon> */ > > > fdt_appendprop_u32(fdt, offset, "starfive,stg-syscon", 0x148); > > > /* append <magic number> */ > > > fdt_appendprop_u32(fdt, offset, "starfive,stg-syscon", 0x1f4); > > > /* append <magic number> */ > > > fdt_setprop_string(fdt, offset, "status", "okay"); > > > > > > offset = fdt_path_offset(fdt, "/soc/usb@10100000"); /* &usb0 */ > > > fdt_setprop_string(fdt, offset, "pinctrl-names", "default"); > > > fdt_setprop_u32(fdt, offset, "pinctrl-0", fdt_get_phandle(fdt, > > > fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0"))); > > > fdt_setprop_string(fdt, offset, "status", "okay"); > > > > > > offset = fdt_path_offset(fdt, "/soc/usb@10100000/usb@0"); /* > > > &usb_cdns3 */ > > > fdt_setprop_u32(fdt, offset, "phys", > > > fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/phy@10200000"))); /* = > > > <&usbphy0> */ > > > fdt_appendprop_u32(fdt, offset, "phys", fdt_get_phandle(fdt, > > > fdt_path_offset(fdt, "/soc/phy@10210000"))); /* append <&pciephy0> */ > > > fdt_setprop(fdt, offset, "phy-names", > > > "cdns3,usb2-phy\0cdns3,usb3-phy", > > > sizeof("cdns3,usb2-phy\0cdns3,usb3-phy")); > > > fdt_setprop_string(fdt, offset, "dr_mode", "host"); > > > > > > I have made some mistake for devicetree and USB2.0 with keeping pcie0 > > > (not disable)? or is there a problem with the implementation? > > > > > > Best regards, -E Shattow > > > I don’t have a Milk-V CM board. So I just can test this code to Star64. > Thanks. I will test this and add the code to board_fixup_star64(). Can you try to configure in USB2.0-only mode on Star64? Do you see the same problem with "load access fault"? ...snip... Same devicetree fixup code but separated some of the statements to multiple lines: https://paste.debian.net/1324036/ ``` diff --git a/board/starfive/visionfive2/spl.c b/board/starfive/visionfive2/spl.c index b794b73b6b..b4b0930e75 100644 --- a/board/starfive/visionfive2/spl.c +++ b/board/starfive/visionfive2/spl.c @@ -123,6 +123,53 @@ static const struct starfive_vf2_pro star64_pine64[] = { "tx-internal-delay-ps", "300"}, }; +void spl_fdt_fixup_jh7110_cadence_usb3_host(void *fdt) +{ + int offset; + u32 phandle; + + offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000"); /* &sysgpio */ + fdt_add_subnode(fdt, offset, "usb0-0"); + fdt_setprop_string(fdt, fdt_path_offset(fdt, "/__symbols__"), "usb_pins", "/soc/pinctrl@13040000/usb0-0"); + offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0"); /* usb_pins */ + fdt_create_phandle(fdt, offset); + fdt_add_subnode(fdt, offset, "driver-vbus-pin"); + offset = fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0/driver-vbus-pin"); + fdt_setprop_u32(fdt, offset, "pinmux", 0xff070019); /* GPIOMUX(25, GPOUT_SYS_USB_DRIVE_VBUS, GPOEN_ENABLE, GPI_NONE) */ + fdt_setprop_empty(fdt, offset, "bias-disable"); + fdt_setprop_empty(fdt, offset, "input-disable"); + fdt_setprop_empty(fdt, offset, "input-schmitt-disable"); + fdt_setprop_u32(fdt, offset, "slew-rate", 0); + + offset = fdt_path_offset(fdt, "/soc/pcie@2b000000"); /* &pcie0 */ + fdt_setprop_string(fdt, offset, "status", "disabled"); + + offset = fdt_path_offset(fdt, "/soc/phy@10210000"); /* &pciephy0 */ + phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/sys_syscon@13030000")); /* = <&sys_syscon> */ + fdt_setprop_u32(fdt, offset, "starfive,sys-syscon", phandle); + fdt_appendprop_u32(fdt, offset, "starfive,sys-syscon", 0x18); /* append <magic number> */ + phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/stg_syscon@10240000")); /* = <&stg_syscon> */ + fdt_setprop_u32(fdt, offset, "starfive,stg-syscon", phandle); + fdt_appendprop_u32(fdt, offset, "starfive,stg-syscon", 0x148); /* append <magic number> */ + fdt_appendprop_u32(fdt, offset, "starfive,stg-syscon", 0x1f4); /* append <magic number> */ + fdt_setprop_string(fdt, offset, "status", "okay"); + + offset = fdt_path_offset(fdt, "/soc/usb@10100000"); /* &usb0 */ + fdt_setprop_string(fdt, offset, "pinctrl-names", "default"); + phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/pinctrl@13040000/usb0-0")); /* <&usb_pins> */ + fdt_setprop_u32(fdt, offset, "pinctrl-0", phandle); + fdt_setprop_string(fdt, offset, "status", "okay"); + + offset = fdt_path_offset(fdt, "/soc/usb@10100000/usb@0"); /* &usb_cdns3 */ + phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/phy@10200000")); /* = <&usbphy0> */ + fdt_setprop_u32(fdt, offset, "phys", phandle); + phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/phy@10210000")); /* append <&pciephy0> */ + fdt_appendprop_u32(fdt, offset, "phys", phandle); + fdt_setprop_string(fdt, offset, "phy-names", "cdns3,usb2-phy"); + fdt_appendprop_string(fdt, offset, "phy-names", "cdns3,usb3-phy"); + fdt_setprop_string(fdt, offset, "dr_mode", "host"); +} + void spl_fdt_fixup_mars(void *fdt) { static const char compat[] = "milkv,mars\0starfive,jh7110"; @@ -335,6 +382,8 @@ void spl_fdt_fixup_star64(void *fdt) break; } } + + spl_fdt_fixup_jh7110_cadence_usb3_host(fdt); } void spl_perform_fixups(struct spl_image_info *spl_image) ``` I think there is missing some of the USB2.0-only logic in your patch. Can you try some more testing to understand why this fault happens here? Thanks, -E