linux-kernel - [PATCH v3 01/13] dt-bindings: usb: mtu3: remove support VBUS detection of extcon

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Message-ID: <1626340078-29111-2-git-send-email-chunfeng.yun@mediatek.com>
Date:   Thu, 15 Jul 2021 17:07:46 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Felipe Balbi <balbi@...nel.org>
CC:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        <linux-usb@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Yuwen Ng <yuwen.ng@...iatek.com>,
        Eddie Hung <eddie.hung@...iatek.com>
Subject: [PATCH v3 01/13] dt-bindings: usb: mtu3: remove support VBUS detection of extcon

Due to no platforms use a multi-funtion pin to detect VBUS
status until now when support dual role mode, prefer not to
support it anymore;
Another reason is that the controller doesn't support idle status,
the dual role port works as device or as host, using an IDDIG pin
is good enough, this will help to save another multi-function pin;
And fix a typo of 'neede';
Last modify example using VBUS to turn on/off device, for device
only mode, the driver doesn't get extcon.

Acked-by: Rob Herring <robh@...nel.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---
v3: add Acked-by Rob
v2: no changes
---
 .../bindings/usb/mediatek,mtu3.yaml           | 22 +++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml
index dbc7876e0a0b..2cac7a87ce36 100644
--- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml
@@ -106,7 +106,7 @@ properties:
   extcon:
     deprecated: true
     description: |
-      Phandle to the extcon device detecting the IDDIG/VBUS state, neede
+      Phandle to the extcon device detecting the IDDIG state, needed
       when supports dual-role mode.
       It's considered valid for compatibility reasons, not allowed for
       new bindings, and use "usb-role-switch" property instead.
@@ -230,7 +230,7 @@ examples:
         };
     };
 
-  # Enable/disable device by an input gpio for VBUS pin
+  # Dual role switch by gpio-usb-b-connector
   - |
     #include <dt-bindings/gpio/gpio.h>
     #include <dt-bindings/power/mt2712-power.h>
@@ -244,13 +244,27 @@ examples:
         power-domains = <&scpsys MT2712_POWER_DOMAIN_USB2>;
         clocks = <&topckgen CLK_TOP_USB30_SEL>;
         clock-names = "sys_ck";
-        dr_mode = "peripheral";
+        dr_mode = "otg";
         usb-role-switch;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        host0: usb@...70000 {
+            compatible = "mediatek,mt2712-xhci", "mediatek,mtk-xhci";
+            reg = <0x11270000 0x1000>;
+            reg-names = "mac";
+            interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_LOW>;
+            power-domains = <&scpsys MT2712_POWER_DOMAIN_USB>;
+            clocks = <&topckgen CLK_TOP_USB30_SEL>, <&clk26m>;
+            clock-names = "sys_ck", "ref_ck";
+        };
 
         connector {
             compatible = "gpio-usb-b-connector", "usb-b-connector";
             type = "micro";
-            vbus-gpios = <&pio 13 GPIO_ACTIVE_HIGH>;
+            id-gpios = <&pio 12 GPIO_ACTIVE_HIGH>;
+            vbus-supply = <&usb_p0_vbus>;
         };
     };
 
-- 
2.18.0