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SubjectRe: [PATCH v6 13/13] dts: hi3660: Add support for usb on Hikey960
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Hi Rob,

On 2019/4/26 6:00, Rob Herring wrote:
> On Sat, Apr 20, 2019 at 02:40:19PM +0800, Yu Chen wrote:
>> This patch adds support for usb on Hikey960.
>>
>> Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>
>> Cc: Wei Xu <xuwei5@hisilicon.com>
>> Cc: Rob Herring <robh+dt@kernel.org>
>> Cc: Mark Rutland <mark.rutland@arm.com>
>> Cc: linux-arm-kernel@lists.infradead.org
>> Cc: John Stultz <john.stultz@linaro.org>
>> Cc: Binghui Wang <wangbinghui@hisilicon.com>
>> Signed-off-by: Yu Chen <chenyu56@huawei.com>
>> ---
>> v2:
>> * Remove device_type property.
>> * Add property "usb-role-switch".
>> v3:
>> * Make node "usb_phy" a subnode of usb3_otg_bc register.
>> * Remove property "typec-vbus-enable-val" of hisi_hikey_usb.
>> v4:
>> * Remove property "hisilicon,usb3-otg-bc-syscon" of usb-phy.
>> ---
>> ---
>> arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts | 53 ++++++++++++++++
>> arch/arm64/boot/dts/hisilicon/hi3660.dtsi | 73 +++++++++++++++++++++++
>> 2 files changed, 126 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
>> index e035cf195b19..d4e11c56b250 100644
>> --- a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
>> +++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
>> @@ -13,6 +13,7 @@
>> #include <dt-bindings/gpio/gpio.h>
>> #include <dt-bindings/input/input.h>
>> #include <dt-bindings/interrupt-controller/irq.h>
>> +#include <dt-bindings/usb/pd.h>
>>
>> / {
>> model = "HiKey960";
>> @@ -196,6 +197,26 @@
>> method = "smc";
>> };
>> };
>> +
>> + hisi_hikey_usb: hisi_hikey_usb {
>> + compatible = "hisilicon,hikey960_usb";
>> + typec-vbus-gpios = <&gpio25 2 GPIO_ACTIVE_HIGH>;
>> + otg-switch-gpios = <&gpio25 6 GPIO_ACTIVE_HIGH>;
>> + hub-vdd33-en-gpios = <&gpio5 6 GPIO_ACTIVE_HIGH>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&usbhub5734_pmx_func>;
>> +
>> + port {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + hikey_usb_ep: endpoint@0 {
>> + reg = <0>;
>> + remote-endpoint = <&dwc3_role_switch_notify>;
>> + };
>> + };
>> + };
>> +
>> };
>>
>> /*
>> @@ -526,6 +547,38 @@
>> &i2c1 {
>> status = "okay";
>>
>> + rt1711h: rt1711h@4e {
>> + compatible = "richtek,rt1711h";
>
> The binding doc for this should state it should have a 'connector' node.
>
Hi shufan,
Is the 'connector' node an essential node of rt1711h?
Currently it is missing in Documentation/devicetree/bindings/usb/richtek,rt1711h.txt.
Do you think the 'connector' node should add as this patch in the binding doc?

>> + reg = <0x4e>;
>> + status = "ok";
>
> Can drop this, it is the default.
>
OK.

>> + interrupt-parent = <&gpio27>;
>> + interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&usb_cfg_func>;
>> +
>> + usb_con: connector {
>> + compatible = "usb-c-connector";
>> + label = "USB-C";
>> + data-role = "dual";
>> + power-role = "dual";
>> + try-power-role = "sink";
>> + source-pdos = <PDO_FIXED(5000, 500, PDO_FIXED_USB_COMM)>;
>> + sink-pdos = <PDO_FIXED(5000, 500, PDO_FIXED_USB_COMM)
>> + PDO_VAR(5000, 5000, 1000)>;
>> + op-sink-microwatt = <10000000>;
>> + };
>> +
>> + port {
>
> The connector node should have a 'ports' child with 'port@0' being the
> HS connection.
>
This port and endpoint of the port are used for role_switch matching by
fwnode_graph_devcon_match. I'm not too sure the 'ports' under connector is used in
rt1711h driver?
Hi shufan_lee,
Can you confirm this?

>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + rt1711h_ep: endpoint@0 {
>> + reg = <0>;
>> + remote-endpoint = <&dwc3_role_switch>;
>> + };
>> + };
>> + };
>> +
>> adv7533: adv7533@39 {
>> status = "ok";
>> compatible = "adi,adv7533";
>> diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
>> index 2f19e0e5b7cf..173467505ada 100644
>> --- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
>> +++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
>> @@ -355,6 +355,12 @@
>> #clock-cells = <1>;
>> };
>>
>> + pmctrl: pmctrl@fff31000 {
>> + compatible = "hisilicon,hi3660-pmctrl", "syscon";
>> + reg = <0x0 0xfff31000 0x0 0x1000>;
>> + #clock-cells = <1>;
>> + };
>> +
>> pmuctrl: crg_ctrl@fff34000 {
>> compatible = "hisilicon,hi3660-pmuctrl", "syscon";
>> reg = <0x0 0xfff34000 0x0 0x1000>;
>> @@ -1134,5 +1140,72 @@
>> };
>> };
>> };
>> +
>> + usb3_otg_bc: usb3_otg_bc@ff200000 {
>> + compatible = "syscon", "simple-mfd";
>> + reg = <0x0 0xff200000 0x0 0x1000>;
>> +
>> + usb_phy: usb-phy {
>> + compatible = "hisilicon,hi3660-usb-phy";
>> + #phy-cells = <0>;
>> + hisilicon,pericrg-syscon = <&crg_ctrl>;
>> + hisilicon,pctrl-syscon = <&pctrl>;
>> + hisilicon,eye-diagram-param = <0x22466e4>;
>> + };
>> + };
>> +
>> + usb3: hisi_dwc3 {
>> + compatible = "hisilicon,hi3660-dwc3";
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> + ranges;
>
> If there are not any wrapper registers, then get rid of the hisi_dwc3
> node. For just clocks and resets we just put everything in one node.
>
I will try to fix this.
>> +
>> + clocks = <&crg_ctrl HI3660_CLK_ABB_USB>,
>> + <&crg_ctrl HI3660_ACLK_GATE_USB3OTG>;
>> + clock-names = "clk_usb3phy_ref", "aclk_usb3otg";
>> +
>> + assigned-clocks = <&crg_ctrl HI3660_ACLK_GATE_USB3OTG>;
>> + assigned-clock-rates = <229000000>;
>> + resets = <&crg_rst 0x90 8>,
>> + <&crg_rst 0x90 7>,
>> + <&crg_rst 0x90 6>,
>> + <&crg_rst 0x90 5>;
>> +
>> + dwc3: dwc3@ff100000 {
>> + compatible = "snps,dwc3";
>> + reg = <0x0 0xff100000 0x0 0x100000>;
>> + interrupts = <0 159 4>, <0 161 4>;
>> + phys = <&usb_phy>;
>> + phy-names = "usb3-phy";
>> + dr_mode = "otg";
>> + maximum-speed = "super-speed";
>> + phy_type = "utmi";
>> + snps,dis-del-phy-power-chg-quirk;
>
>> + snps,lfps_filter_quirk;
>> + snps,dis_u2_susphy_quirk;
>> + snps,dis_u3_susphy_quirk;
>> + snps,tx_de_emphasis_quirk;
>> + snps,tx_de_emphasis = <1>;
>> + snps,dis_enblslpm_quirk;
>
> Pretty sure these aren't documented because we don't use '_' in property
> names.
>
Do you mean property as "snps,dis_enblslpm_quirk"? These properties are
documented in Documentation/devicetree/bindings/usb/dwc3.txt.

>> + snps,gctl-reset-quirk;
>> + usb-role-switch;
>> + role-switch-default-host;
>> +
>> + port {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + dwc3_role_switch: endpoint@0 {
>> + reg = <0>;
>> + remote-endpoint = <&rt1711h_ep>;
>> + };
>> +
>> + dwc3_role_switch_notify: endpoint@1 {
>> + reg = <1>;
>> + remote-endpoint = <&hikey_usb_ep>;
>> + };
>> + };
>> + };
>> + };
>> };
>> };
>> --
>> 2.15.0-rc2
>>
>
> .
>

Thanks
- Yu Chen

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