[PATCH 14/23] arm: dts: k3-am642-evm: Add DDR vtt regulator

Nishanth Menon
2023-04-14T08:02:09Z

Describe the DDR vtt regulator on evm

This is a pending upstream kernel updates as of v6.3-rc6.

Signed-off-by: Nishanth Menon <nm@ti.com>
---
Sent to kernel.org https://lore.kernel.org/linux-devicetree/20230414073328.381336-1-nm@ti.com/
I skipped doing the regulator renaming etc, it is just churn
un-necessary for the original purpose of fixing the r5.dts

arch/arm/dts/k3-am642-evm.dts | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/arch/arm/dts/k3-am642-evm.dts b/arch/arm/dts/k3-am642-evm.dts
index ed3a6f1341b0..82d356a66793 100644
--- a/arch/arm/dts/k3-am642-evm.dts
+++ b/arch/arm/dts/k3-am642-evm.dts
@@ -148,6 +148,21 @@
regulator-boot-on;
};

+ /* XXX: Upstream kernel TODO: send upstream */
+ vtt_supply: regulator-5 {
+ compatible = "regulator-fixed";
+ regulator-name = "vtt";
+ pinctrl-names = "default";
+ pinctrl-0 = <&ddr_vtt_pins_default>;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&main_gpio0 12 GPIO_ACTIVE_HIGH>;
+ vin-supply = <&vsys_3v3>;
+ enable-active-high;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
leds {
compatible = "gpio-leds";

@@ -322,6 +337,13 @@
AM64X_IOPAD(0x0258, PIN_OUTPUT, 0) /* (C17) MCAN1_TX */
>;
};
+
+ /* XXX: Upstream kernel TODO: send upstream */
+ ddr_vtt_pins_default: ddr-vtt-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0030, PIN_OUTPUT_PULLUP, 7) /* (L18) OSPI0_CSN1.GPIO0_12 */
+ >;
+ };
};

&main_uart0 {
--
2.40.0