From: Max Krummenacher <max.krummenacher@xxxxxxxxxxx>
The Verdin CTRL_SLEEP_MOCI# pin signals the carrier board that the module
is in sleep and it may switch off unneeded power.
Control this pin with a regulator power domain controller which uses a
fixed regulator with a gpio enable.
Signed-off-by: Max Krummenacher <max.krummenacher@xxxxxxxxxxx>
---
.../dts/freescale/imx8mm-verdin-dahlia.dtsi | 1 +
.../boot/dts/freescale/imx8mm-verdin-dev.dtsi | 2 ++
.../boot/dts/freescale/imx8mm-verdin.dtsi | 35 +++++++++++++------
3 files changed, 28 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
index c2a5c2f7b204..03416dc593d8 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
@@ -92,6 +92,7 @@
/* Verdin PCIE_1 */
&pcie0 {
+ power-domains = <&pd_sleep_moci>;
status = "okay";
};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
index 73cc3fafa018..f887b907fdde 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
@@ -50,6 +50,7 @@
/* Audio Codec */
nau8822_1a: audio-codec@1a {
compatible = "nuvoton,nau8822";
+ power-domains = <&pd_sleep_moci>;
reg = <0x1a>;
};
};
@@ -59,6 +60,7 @@
linux,rs485-enabled-at-boot-time;
rs485-rts-active-low;
rs485-rx-during-tx;
+ power-domains = <&pd_sleep_moci>;
};
/* Limit frequency on dev board due to long traces and bad signal integrity */
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
index eafa88d980b3..b5daa8f83bef 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
@@ -53,6 +53,14 @@
};
};
+ pd_sleep_moci: power-domain-sleep-moci {
+ compatible = "regulator-pm-pd";
+ label = "pd_sleep_moci";
+ power-domains = <&pgc_pcie>;
+ power-supply = <®_sleep_moci>;
+ #power-domain-cells = <0>;
+ };
+
/* Carrier Board Supplies */
reg_1p8v: regulator-1p8v {
compatible = "regulator-fixed";
@@ -90,6 +98,19 @@
startup-delay-us = <200000>;
};
+ reg_sleep_moci: regulator-sleep-moci {
+ compatible = "regulator-fixed";
+ enable-active-high;
+ gpio = <&gpio5 1 GPIO_ACTIVE_HIGH>;
+ off-on-delay = <2000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ctrl_sleep_moci>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1800000>;
+ regulator-name = "CTRL_SLEEP_MOCI#";
+ startup-delay-us = <2000>;
+ };
+
reg_usb_otg1_vbus: regulator-usb-otg1 {
compatible = "regulator-fixed";
enable-active-high;
@@ -109,6 +130,7 @@
gpio = <&gpio1 14 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_reg_usb2_en>;
+ power-domains = <&pd_sleep_moci>;
regulator-max-microvolt = <5000000>;
regulator-min-microvolt = <5000000>;
regulator-name = "USB_2_EN";
@@ -198,6 +220,7 @@
interrupts-extended = <&gpio1 6 IRQ_TYPE_EDGE_FALLING>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_can1_int>;
+ power-domains = <&pd_sleep_moci>;
reg = <0>;
spi-max-frequency = <8500000>;
};
@@ -305,16 +328,6 @@
"SODIMM_212",
"SODIMM_151",
"SODIMM_153";
-
- ctrl-sleep-moci-hog {
- gpio-hog;
- /* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */
- gpios = <1 GPIO_ACTIVE_HIGH>;
- line-name = "CTRL_SLEEP_MOCI#";
- output-high;
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_ctrl_sleep_moci>;
- };
};
/* On-module I2C */
@@ -560,6 +573,7 @@
enable-gpios = <&gpio3 3 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpio_10_dsi>;
+ power-domains = <&pd_sleep_moci>;
reg = <0x2c>;
status = "disabled";
};
@@ -576,6 +590,7 @@
compatible = "lontium,lt8912b";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpio_10_dsi>, <&pinctrl_pwm_3_dsi_hpd_gpio>;
+ power-domains = <&pd_sleep_moci>;
reg = <0x48>;
/* Verdin GPIO_9_DSI (LT8912 INT, SODIMM 17, unused) */
/* Verdin GPIO_10_DSI (SODIMM 21) */
--
2.20.1
