diff options
| author | Hugo Villeneuve <hvilleneuve@dimonoff.com> | 2023-11-07 10:50:40 -0500 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2023-12-06 09:53:52 +0800 |
| commit | c8e6e06edec287ef7fd9b034d93be51e27497853 (patch) | |
| tree | 936ffb63670509a7110ae361fc1c46bf1f564e7b /arch | |
| parent | 67275c2f3d9ba6106e7195fb8f0f4b355138b8a5 (diff) | |
arm64: dts: imx8mn-var-som-symphony: add vcc supply for PCA9534
The following warning is shown when probing device:
pca953x 1-0020: supply vcc not found, using dummy regulator
Define a new fixed 3.3v regulator for carrier board peripherals,
enabled by mosfet switch Q2 after the SOM_3V3 supply rises (no software
control).
Add this new regulator as vcc supply to the PCA9534 to silence the warning.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts index a7a57442cb81..a6b94d1957c9 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts @@ -57,6 +57,15 @@ linux,default-trigger = "heartbeat"; }; }; + + /* Peripherals supply, enabled by Q2 after SOM_3V3 rises. */ + reg_per_3v3: regulator-peripheral-3v3 { + compatible = "regulator-fixed"; + regulator-name = "per_3v3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + }; }; ðphy { @@ -79,6 +88,7 @@ interrupts = <7 IRQ_TYPE_EDGE_FALLING>; #gpio-cells = <2>; wakeup-source; + vcc-supply = <®_per_3v3>; /* USB 3.0 OTG (usbotg1) / SATA port switch, set to USB 3.0 */ usb3-sata-sel-hog { |