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From ae6bfe80045f0b01b352dc03ff99c9afdcaff98b Mon Sep 17 00:00:00 2001
From: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Date: Fri, 26 Jan 2024 13:58:53 +0100
Subject: [PATCH v1 2/2] arm64: dts: ti: k3-am62-verdin-dahlia: support
sleep-moci
Previously, we had the sleep-moci pin set to always on. However, the
Dahlia carrier board supports disabling the sleep-moci when the system
is suspended to power down peripherals that support it. This reduces
overall power consumption. This commit adds support for this feature by
disabling the reg_force_sleep_moci regulator and adding a new regulator
for the USB hub that can be turned off when the system is suspended.
Upstream-Status: Submitted [https://lore.kernel.org/linux-devicetree/20240301084901.16656-1-eichest@gmail.com/]
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
---
.../boot/dts/ti/k3-am62-verdin-dahlia.dtsi | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
index bf6d27e70bc4..bb066e726527 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
@@ -43,6 +43,15 @@ simple-audio-card,cpu {
sound-dai = <&mcasp0>;
};
};
+
+ reg_usb_hub: regulator-usb-hub {
+ compatible = "regulator-fixed";
+ enable-active-high;
+ /* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */
+ gpio = <&main_gpio0 31 GPIO_ACTIVE_HIGH>;
+ regulator-boot-on;
+ regulator-name = "HUB_PWR_EN";
+ };
};
/* Verdin ETHs */
@@ -183,6 +192,11 @@ &ospi0 {
status = "okay";
};
+/* Do not force CTRL_SLEEP_MOCI# always enabled */
+®_force_sleep_moci {
+ status = "disabled";
+};
+
/* Verdin SD_1 */
&sdhci1 {
ti,driver-strength-ohm = <33>;
@@ -204,7 +218,15 @@ &usbss1 {
};
&usb1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
status = "okay";
+
+ usb-hub@1 {
+ compatible = "usb424,2744";
+ reg = <1>;
+ vdd-supply = <®_usb_hub>;
+ };
};
/* Verdin CTRL_WAKE1_MICO# */
--
2.40.1
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