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From: Andre Przywara <andre.przywara@arm.com>
To: Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Rob Herring <robh@kernel.org>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
	Icenowy Zheng <icenowy@aosc.io>,
	Emmanuel Vadot <manu@bidouilliste.com>,
	Heinrich Schuchardt <xypron.glpk@gmx.de>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-sunxi@googlegroups.com
Subject: [PATCH v2 2/8] arm64: dts: allwinner: H6: properly connect USB PHY to port 0
Date: Wed, 13 Jan 2021 15:26:24 +0000	[thread overview]
Message-ID: <20210113152630.28810-3-andre.przywara@arm.com> (raw)
In-Reply-To: <20210113152630.28810-1-andre.przywara@arm.com>

In recent Allwinner SoCs the first USB host controller (HCI0) shares
the first PHY with the MUSB controller. Probably to make this sharing
work, we were avoiding to declare this in the DT. This has two
shortcomings:
- U-Boot (which uses the same .dts) cannot use this port in host mode
  without a PHY linked, so we were loosing one USB port there.
- It requires the MUSB driver to be enabled and loaded, although we
  don't actually use it.

To avoid those issues, let's add this PHY link to the H6 .dtsi file.
After all PHY port 0 *is* connected to HCI0, so we should describe
it as this.

This makes it work in U-Boot, also improves compatiblity when no MUSB
driver is loaded (for instance in distribution installers).

Fixes: eabb3d424b6d ("arm64: dts: allwinner: h6: add USB2-related device nodes")
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 8a62a9fbe347..f593cfeaecc9 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -680,6 +680,8 @@
 				 <&ccu CLK_USB_OHCI0>;
 			resets = <&ccu RST_BUS_OHCI0>,
 				 <&ccu RST_BUS_EHCI0>;
+			phys = <&usb2phy 0>;
+			phy-names = "usb";
 			status = "disabled";
 		};
 
@@ -690,6 +692,8 @@
 			clocks = <&ccu CLK_BUS_OHCI0>,
 				 <&ccu CLK_USB_OHCI0>;
 			resets = <&ccu RST_BUS_OHCI0>;
+			phys = <&usb2phy 0>;
+			phy-names = "usb";
 			status = "disabled";
 		};
 
-- 
2.17.5


WARNING: multiple messages have this Message-ID (diff)
From: Andre Przywara <andre.przywara@arm.com>
To: Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org,
	Jernej Skrabec <jernej.skrabec@siol.net>,
	Emmanuel Vadot <manu@bidouilliste.com>,
	Heinrich Schuchardt <xypron.glpk@gmx.de>,
	linux-sunxi@googlegroups.com,
	linux-arm-kernel@lists.infradead.org,
	Icenowy Zheng <icenowy@aosc.io>
Subject: [PATCH v2 2/8] arm64: dts: allwinner: H6: properly connect USB PHY to port 0
Date: Wed, 13 Jan 2021 15:26:24 +0000	[thread overview]
Message-ID: <20210113152630.28810-3-andre.przywara@arm.com> (raw)
In-Reply-To: <20210113152630.28810-1-andre.przywara@arm.com>

In recent Allwinner SoCs the first USB host controller (HCI0) shares
the first PHY with the MUSB controller. Probably to make this sharing
work, we were avoiding to declare this in the DT. This has two
shortcomings:
- U-Boot (which uses the same .dts) cannot use this port in host mode
  without a PHY linked, so we were loosing one USB port there.
- It requires the MUSB driver to be enabled and loaded, although we
  don't actually use it.

To avoid those issues, let's add this PHY link to the H6 .dtsi file.
After all PHY port 0 *is* connected to HCI0, so we should describe
it as this.

This makes it work in U-Boot, also improves compatiblity when no MUSB
driver is loaded (for instance in distribution installers).

Fixes: eabb3d424b6d ("arm64: dts: allwinner: h6: add USB2-related device nodes")
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 8a62a9fbe347..f593cfeaecc9 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -680,6 +680,8 @@
 				 <&ccu CLK_USB_OHCI0>;
 			resets = <&ccu RST_BUS_OHCI0>,
 				 <&ccu RST_BUS_EHCI0>;
+			phys = <&usb2phy 0>;
+			phy-names = "usb";
 			status = "disabled";
 		};
 
@@ -690,6 +692,8 @@
 			clocks = <&ccu CLK_BUS_OHCI0>,
 				 <&ccu CLK_USB_OHCI0>;
 			resets = <&ccu RST_BUS_OHCI0>;
+			phys = <&usb2phy 0>;
+			phy-names = "usb";
 			status = "disabled";
 		};
 
-- 
2.17.5


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  parent reply	other threads:[~2021-01-13 15:28 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-13 15:26 [PATCH v2 0/8] arm64: dts: allwinner: Various DT fixes Andre Przywara
2021-01-13 15:26 ` Andre Przywara
2021-01-13 15:26 ` [PATCH v2 1/8] arm64: dts: allwinner: A64: properly connect USB PHY to port 0 Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-13 15:26 ` Andre Przywara [this message]
2021-01-13 15:26   ` [PATCH v2 2/8] arm64: dts: allwinner: H6: " Andre Przywara
2021-01-13 15:26 ` [PATCH v2 3/8] arm64: dts: allwinner: Pine64-LTS: Add status LED Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-13 17:13   ` Heinrich Schuchardt
2021-01-13 17:13     ` Heinrich Schuchardt
2021-01-14 11:48   ` Maxime Ripard
2021-01-14 11:48     ` Maxime Ripard
2021-01-13 15:26 ` [PATCH v2 4/8] arm64: dts: allwinner: Drop non-removable from SoPine/LTS SD card Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-13 15:26 ` [PATCH v2 5/8] arm64: dts: allwinner: H6: Allow up to 150 MHz MMC bus frequency Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-13 15:26 ` [PATCH v2 6/8] arm64: dts: allwinner: A64: Limit MMC2 bus frequency to 150 MHz Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-13 15:26 ` [PATCH v2 7/8] arm64: dts: allwinner: Pine64-LTS/SoPine: Enable HS200 eMMC mode Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-13 15:26 ` [PATCH v2 8/8] arm64: dts: allwinner: Pine H64: " Andre Przywara
2021-01-13 15:26   ` Andre Przywara
2021-01-14  5:04 ` [linux-sunxi] [PATCH v2 0/8] arm64: dts: allwinner: Various DT fixes Chen-Yu Tsai
2021-01-14  5:04   ` Chen-Yu Tsai
2021-01-14 11:51 ` Maxime Ripard
2021-01-14 11:51   ` Maxime Ripard

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