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 {