Description

Add dummy regulators to pinctr dts for orangepione SBC. This will prevent the kernel driver from issuing warnings "supply vcc-xx not found, using dummy regulator" for the dummy regulators added.

Documentation summary for feature / change

How Has This Been Tested?

Initially the dts entries were manually added to a running system using the dts editor in armbian-config to verify that the changes produced the desired result.

Then a kernel patch was created, put into a git repository and an image generated from that repository. After installing the image on an orangepione the dtb was examined via the dts editor of armbian-config to confirm the presence of the required entries and the relevant output of dmesg was compared to a dmesg prior to the changed image.

Patched pinctr: pinctrl@1c20800 { reg = <0x1c20800 0x400>; interrupt-parent = <0x1c>; interrupts = <0x00 0x0b 0x04 0x00 0x11 0x04>; clocks = <0x03 0x36 0x1a 0x1b 0x00>; clock-names = "apb\0hosc\0losc"; gpio-controller; #gpio-cells = <0x03>; interrupt-controller; #interrupt-cells = <0x03>; compatible = "allwinner,sun8i-h3-pinctrl"; vcc-pa-supply = <0x15>; vcc-pc-supply = <0x15>; vcc-pd-supply = <0x15>; vcc-pg-supply = <0x15>; phandle = <0x16>;

Before dmesg:

[ 1.624523] gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation. [ 1.627934] sun8i-h3-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver [ 1.628539] gpio gpiochip1: Static allocation of GPIO base is deprecated, use dynamic allocation. [ 1.630347] sun8i-h3-r-pinctrl 1f02c00.pinctrl: initialized sunXi PIO driver [ 1.630717] sun8i-h3-pinctrl 1c20800.pinctrl: supply vcc-pa not found, using dummy regulator [ 1.631449] printk: console [ttyS0] disabled [ 1.631881] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 138, base_baud = 1500000) is a 16550A [ 1.631943] printk: console [ttyS0] enabled [ 1.662003] sun4i-drm display-engine: bound 1100000.mixer (ops 0xc0bb3530) [ 1.664046] sun4i-drm display-engine: bound 1200000.mixer (ops 0xc0bb3530) [ 1.664515] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0baed88) [ 1.664916] sun4i-drm display-engine: bound 1c0d000.lcd-controller (ops 0xc0baed88) [ 1.665001] sun8i-dw-hdmi 1ee0000.hdmi: supply hvcc not found, using dummy regulator [ 1.665983] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX controller v1.32a with HDCP (sun8i_dw_hdmi_phy) [ 1.666767] sun8i-dw-hdmi 1ee0000.hdmi: registered DesignWare HDMI I2C bus driver [ 1.667325] sun4i-drm display-engine: bound 1ee0000.hdmi (ops 0xc0bb28fc) [ 1.668197] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0 [ 1.668296] sun4i-drm display-engine: [drm] Cannot find any crtc or sizes [ 1.672029] sun8i-h3-r-pinctrl 1f02c00.pinctrl: supply vcc-pl not found, using dummy regulator [ 1.672085] sun8i-h3-pinctrl 1c20800.pinctrl: supply vcc-pf not found, using dummy regulator [ 1.672396] sun4i-drm display-engine: [drm] Cannot find any crtc or sizes [ 1.676045] sun8i-h3-pinctrl 1c20800.pinctrl: supply vcc-pg not found, using dummy regulator

After dmesg (note that supply vcc-pa and pg warnings are not present):

[ 1.993966] gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation. [ 1.997326] sun8i-h3-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver [ 1.997891] gpio gpiochip1: Static allocation of GPIO base is deprecated, use dynamic allocation. [ 1.999757] sun8i-h3-r-pinctrl 1f02c00.pinctrl: initialized sunXi PIO driver [ 2.000715] printk: console [ttyS0] disabled [ 2.001152] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 138, base_baud = 1500000) is a 16550A [ 2.001213] printk: console [ttyS0] enabled [ 2.031315] sun4i-drm display-engine: bound 1100000.mixer (ops 0xc0bb3530) [ 2.033318] sun4i-drm display-engine: bound 1200000.mixer (ops 0xc0bb3530) [ 2.033766] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0baed88) [ 2.034153] sun4i-drm display-engine: bound 1c0d000.lcd-controller (ops 0xc0baed88) [ 2.034238] sun8i-dw-hdmi 1ee0000.hdmi: supply hvcc not found, using dummy regulator [ 2.035482] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX controller v1.32a with HDCP (sun8i_dw_hdmi_phy) [ 2.036244] sun8i-dw-hdmi 1ee0000.hdmi: registered DesignWare HDMI I2C bus driver [ 2.036617] sun4i-drm display-engine: bound 1ee0000.hdmi (ops 0xc0bb28fc) [ 2.037494] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0 [ 2.037592] sun4i-drm display-engine: [drm] Cannot find any crtc or sizes [ 2.041301] sun8i-h3-r-pinctrl 1f02c00.pinctrl: supply vcc-pl not found, using dummy regulator [ 2.041356] sun8i-h3-pinctrl 1c20800.pinctrl: supply vcc-pf not found, using dummy regulator

Checklist:

• [ x ] My code follows the style guidelines of this project
• [ x ] I have performed a self-review of my own code
• [ x ] My changes generate no new warnings

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