linux-kernel - [PATCH v1] arch: arm64: dts: meson: a1: add assigned-clocks for usb node

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Date: Wed, 24 Jan 2024 16:06:23 +0300
From: Alexey Romanov <avromanov@...utedevices.com>
To: <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
	<conor+dt@...nel.org>, <neil.armstrong@...aro.org>, <khilman@...libre.com>,
	<jbrunet@...libre.com>, <martin.blumenstingl@...glemail.com>
CC: <linux-amlogic@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<kernel@...utedevices.com>, Alexey Romanov <avromanov@...utedevices.com>,
	Dmitry Rokosov <ddrokosov@...utedevices.com>
Subject: [PATCH v1] arch: arm64: dts: meson: a1: add assigned-clocks for usb node

To ensure proper functionality of USB, it is necessary to use
the rate of 64000000 for CLKID_USB_BUS. For instance, adb may
not function correctly without this setting. This information
has been derived from the vendor SDK.

Signed-off-by: Alexey Romanov <avromanov@...utedevices.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@...utedevices.com>
---
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index cf150f568335..b9fd69112535 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -668,6 +668,8 @@ usb: usb@...04400 {
 				 <&clkc_periphs CLKID_USB_BUS>,
 				 <&clkc_periphs CLKID_USB_CTRL_IN>;
 			clock-names = "usb_ctrl", "usb_bus", "xtal_usb_ctrl";
+			assigned-clocks = <&clkc_periphs CLKID_USB_BUS>;
+			assigned-clock-rates = <64000000>;
 			resets = <&reset RESET_USBCTRL>;
 			reset-name = "usb_ctrl";
 
-- 
2.34.1