[PATCH v3 7/8] dts: starfive: Add JH7110 Cadence USB dts node
E Shattow
lucent at gmail.com
Tue Jul 23 05:53:49 CEST 2024
On Mon, Jul 22, 2024 at 6:29 PM Minda Chen <minda.chen at starfivetech.com> wrote:
>
>
>
> >
> > On Sat, Jul 20, 2024 at 6:47 PM E Shattow <lucent at 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.chen at starfivetech.com>
> > wrote:
> > > >
> > > > Add Jh7110 Cadence USB dts node, Visionfive2 default setting is USB
> > > > 2.0 device.
> > > >
> > > > Signed-off-by: Minda Chen <minda.chen at 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 at 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 at 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 at 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 at 10210000 {
> > > > + compatible = "starfive,jh7110-pcie-phy";
> > > > + reg = <0x0 0x10210000 0x0 0x10000>;
> > > > + #phy-cells = <0>;
> > > > + };
> > > > +
> > > > + pciephy1: phy at 10220000 {
> > > > + compatible = "starfive,jh7110-pcie-phy";
> > > > + reg = <0x0 0x10220000 0x0 0x10000>;
> > > > + #phy-cells = <0>;
> > > > + };
> > > > +
> > > > stgcrg: clock-controller at 10230000 {
> > > > compatible = "starfive,jh7110-stgcrg";
> > > > reg = <0x0 0x10230000 0x0 0x10000>;
> > > > --
> > > > 2.17.1
> > > >
> > >
> > > Access fault
> > >
> > > starting USB...
> > > Bus usb at 0: cdns-usb3-host usb at 0: set 1 has failed, back to 0
> > > scanning bus usb at 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 at 13040000"); /*
> > &sysgpio */
> > > fdt_add_subnode(fdt, offset, "usb0-0");
> > > fdt_setprop_string(fdt, fdt_path_offset(fdt, "/__symbols__"),
> > > "usb_pins", "/soc/pinctrl at 13040000/usb0-0");
> > > offset = fdt_path_offset(fdt, "/soc/pinctrl at 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 at 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 at 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 at 13040000/usb0-0")));
> > > fdt_setprop_string(fdt, offset, "status", "okay");
> > >
> > > offset = fdt_path_offset(fdt, "/soc/usb at 10100000/usb at 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 at 13040000"); /*
> > &sysgpio */
> > > fdt_add_subnode(fdt, offset, "usb0-0");
> > > fdt_setprop_string(fdt, fdt_path_offset(fdt, "/__symbols__"),
> > > "usb_pins", "/soc/pinctrl at 13040000/usb0-0");
> > > offset = fdt_path_offset(fdt, "/soc/pinctrl at 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 at 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 at 2b000000"); /* &pcie0 */
> > > fdt_setprop_string(fdt, offset, "status", "disabled");
> > >
> > > offset = fdt_path_offset(fdt, "/soc/phy at 10210000"); /* &pciephy0
> > */
> > > fdt_setprop_u32(fdt, offset, "starfive,sys-syscon",
> > > fdt_get_phandle(fdt, fdt_path_offset(fdt,
> > > "/soc/sys_syscon at 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 at 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 at 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 at 13040000/usb0-0")));
> > > fdt_setprop_string(fdt, offset, "status", "okay");
> > >
> > > offset = fdt_path_offset(fdt, "/soc/usb at 10100000/usb at 0"); /*
> > > &usb_cdns3 */
> > > fdt_setprop_u32(fdt, offset, "phys",
> > > fdt_get_phandle(fdt, fdt_path_offset(fdt, "/soc/phy at 10200000"))); /* =
> > > <&usbphy0> */
> > > fdt_appendprop_u32(fdt, offset, "phys", fdt_get_phandle(fdt,
> > > fdt_path_offset(fdt, "/soc/phy at 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 at 13040000"); /* &sysgpio */
+ fdt_add_subnode(fdt, offset, "usb0-0");
+ fdt_setprop_string(fdt, fdt_path_offset(fdt, "/__symbols__"),
"usb_pins", "/soc/pinctrl at 13040000/usb0-0");
+ offset = fdt_path_offset(fdt, "/soc/pinctrl at 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 at 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 at 2b000000"); /* &pcie0 */
+ fdt_setprop_string(fdt, offset, "status", "disabled");
+
+ offset = fdt_path_offset(fdt, "/soc/phy at 10210000"); /* &pciephy0 */
+ phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt,
"/soc/sys_syscon at 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 at 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 at 10100000"); /* &usb0 */
+ fdt_setprop_string(fdt, offset, "pinctrl-names", "default");
+ phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt,
"/soc/pinctrl at 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 at 10100000/usb at 0"); /* &usb_cdns3 */
+ phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt,
"/soc/phy at 10200000")); /* = <&usbphy0> */
+ fdt_setprop_u32(fdt, offset, "phys", phandle);
+ phandle = fdt_get_phandle(fdt, fdt_path_offset(fdt,
"/soc/phy at 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
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