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arm64: dts: ti: k3-am62-verdin-dahlia: Keep CTRL_SLEEP_MOCI# regulator on

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commit 9438f97029 upstream.

This reverts commit 3935fbc87d.

CTRL_SLEEP_MOCI# is a signal that is defined for all the SoM
implementing the Verdin family specification, this signal is supposed to
control the power enable in the carrier board when the system is in deep
sleep mode. However this is not possible with Texas Instruments AM62
SoC, IOs output buffer is disabled in deep sleep and IOs are in
tri-state mode.

Given that we cannot properly control this pin, force it to be always
high to minimize potential issues.

Fixes: 3935fbc87d ("arm64: dts: ti: k3-am62-verdin-dahlia: support sleep-moci")
Cc:  <stable@vger.kernel.org>
Link: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1361669/am625-gpio-output-state-in-deep-sleep/5244802
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240731054804.6061-1-francesco@dolcini.it
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Francesco Dolcini
2024-07-31 07:48:04 +02:00
committed by Greg Kroah-Hartman
parent cd490a247d
commit aa6b80ac2f
2 changed files with 0 additions and 28 deletions
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22
arch/arm64/boot/dts/ti/k3-am62-verdin-dahlia.dtsi
View File

@@ -43,15 +43,6 @@
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 */
@@ -193,11 +184,6 @@
status = "okay";
};
/* Do not force CTRL_SLEEP_MOCI# always enabled */
&reg_force_sleep_moci {
status = "disabled";
};
/* Verdin SD_1 */
&sdhci1 {
status = "okay";
@@ -218,15 +204,7 @@
};
&usb1 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
usb-hub@1 {
compatible = "usb424,2744";
reg = <1>;
vdd-supply = <&reg_usb_hub>;
};
};
/* Verdin CTRL_WAKE1_MICO# */

6
arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
View File

@@ -138,12 +138,6 @@
vin-supply = <&reg_1v8>;
};
/*
* By default we enable CTRL_SLEEP_MOCI#, this is required to have
* peripherals on the carrier board powered.
* If more granularity or power saving is required this can be disabled
* in the carrier board device tree files.
*/
reg_force_sleep_moci: regulator-force-sleep-moci {
compatible = "regulator-fixed";
enable-active-high;