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Message-ID: <20220705114250.5136ede4@donnerap.cambridge.arm.com>
Date: Tue, 5 Jul 2022 11:42:50 +0100
From: Andre Przywara <andre.przywara@....com>
To: Samuel Holland <samuel@...lland.org>
Cc: Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Linus Walleij <linus.walleij@...aro.org>,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 3/7] arm64: dts: allwinner: Add Allwinner H616 .dtsi
file
On Mon, 4 Jul 2022 20:16:50 -0500
Samuel Holland <samuel@...lland.org> wrote:
> Hi Andre,
>
> On 7/1/22 6:24 AM, Andre Przywara wrote:
> > This (relatively) new SoC is similar to the H6, but drops the (broken)
> > PCIe support and the USB 3.0 controller. It also gets the management
> > controller removed, which in turn removes *some*, but not all of the
> > devices formerly dedicated to the ARISC (CPUS).
> > And while there is still the extra sunxi interrupt controller, the
> > package lacks the corresponding NMI pin, so no interrupts for the PMIC.
> >
> > The reserved memory node is actually handled by Trusted Firmware now,
> > but U-Boot fails to propagate this to a separately loaded DTB, so we
> > keep it in here for now, until U-Boot learns to do this properly.
>
> Other than the decision about the reserved-memory node, which is being discussed
> in the v11 thread, this looks good to me. Just a few minor comments below.
Many thanks for going through that file! I will fix what you commented on.
Just one comment on the I2C binding below ....
>
> Regards,
> Samuel
>
> > Signed-off-by: Andre Przywara <andre.przywara@....com>
> > ---
> > .../arm64/boot/dts/allwinner/sun50i-h616.dtsi | 579 ++++++++++++++++++
> > 1 file changed, 579 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
> > new file mode 100644
> > index 0000000000000..478f0b395ff58
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
> > @@ -0,0 +1,579 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +// Copyright (C) 2020 Arm Ltd.
> > +// based on the H6 dtsi, which is:
> > +// Copyright (C) 2017 Icenowy Zheng <icenowy@...c.io>
> > +
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +#include <dt-bindings/clock/sun50i-h616-ccu.h>
> > +#include <dt-bindings/clock/sun50i-h6-r-ccu.h>
> > +#include <dt-bindings/reset/sun50i-h616-ccu.h>
> > +#include <dt-bindings/reset/sun50i-h6-r-ccu.h>
> > +
> > +/ {
> > + interrupt-parent = <&gic>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + cpus {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + cpu0: cpu@0 {
> > + compatible = "arm,cortex-a53";
> > + device_type = "cpu";
> > + reg = <0>;
> > + enable-method = "psci";
> > + clocks = <&ccu CLK_CPUX>;
> > + };
> > +
> > + cpu1: cpu@1 {
> > + compatible = "arm,cortex-a53";
> > + device_type = "cpu";
> > + reg = <1>;
> > + enable-method = "psci";
> > + clocks = <&ccu CLK_CPUX>;
> > + };
> > +
> > + cpu2: cpu@2 {
> > + compatible = "arm,cortex-a53";
> > + device_type = "cpu";
> > + reg = <2>;
> > + enable-method = "psci";
> > + clocks = <&ccu CLK_CPUX>;
> > + };
> > +
> > + cpu3: cpu@3 {
> > + compatible = "arm,cortex-a53";
> > + device_type = "cpu";
> > + reg = <3>;
> > + enable-method = "psci";
> > + clocks = <&ccu CLK_CPUX>;
> > + };
> > + };
> > +
> > + reserved-memory {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + ranges;
> > +
> > + /* 512KiB reserved for ARM Trusted Firmware (BL31) */
> > + secmon_reserved: secmon@...00000 {
> > + reg = <0x0 0x40000000 0x0 0x80000>;
> > + no-map;
> > + };
> > + };
> > +
> > + osc24M: osc24M-clk {
> > + #clock-cells = <0>;
> > + compatible = "fixed-clock";
> > + clock-frequency = <24000000>;
> > + clock-output-names = "osc24M";
> > + };
> > +
> > + pmu {
> > + compatible = "arm,cortex-a53-pmu";
> > + interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
> > + };
> > +
> > + psci {
> > + compatible = "arm,psci-0.2";
> > + method = "smc";
> > + };
> > +
> > + timer {
> > + compatible = "arm,armv8-timer";
> > + arm,no-tick-in-suspend;
> > + interrupts = <GIC_PPI 13
> > + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
> > + <GIC_PPI 14
> > + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
> > + <GIC_PPI 11
> > + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
> > + <GIC_PPI 10
> > + (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
> > + };
> > +
> > + soc@0 {
>
> No unit address needed here.
>
> > + compatible = "simple-bus";
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + ranges = <0x0 0x0 0x0 0x40000000>;
> > +
> > + syscon: syscon@...0000 {
> > + compatible = "allwinner,sun50i-h616-system-control";
> > + reg = <0x03000000 0x1000>;
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + ranges;
> > +
> > + sram_c: sram@...00 {
> > + compatible = "mmio-sram";
> > + reg = <0x00028000 0x30000>;
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + ranges = <0 0x00028000 0x30000>;
> > + };
> > + };
> > +
> > + ccu: clock@...1000 {
> > + compatible = "allwinner,sun50i-h616-ccu";
> > + reg = <0x03001000 0x1000>;
> > + clocks = <&osc24M>, <&rtc 0>, <&rtc 2>;
>
> Please use the recently-added symbolic constants for the RTC clocks.
>
> > + clock-names = "hosc", "losc", "iosc";
> > + #clock-cells = <1>;
> > + #reset-cells = <1>;
> > + };
> > +
> > + watchdog: watchdog@...90a0 {
> > + compatible = "allwinner,sun50i-h616-wdt",
> > + "allwinner,sun6i-a31-wdt";
> > + reg = <0x030090a0 0x20>;
> > + interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&osc24M>;
> > + };
> > +
> > + pio: pinctrl@...b000 {
> > + compatible = "allwinner,sun50i-h616-pinctrl";
> > + reg = <0x0300b000 0x400>;
> > + interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_APB1>, <&osc24M>, <&rtc 0>;
>
> Same for the RTC clock here.
>
> > + clock-names = "apb", "hosc", "losc";
> > + gpio-controller;
> > + #gpio-cells = <3>;
> > + interrupt-controller;
> > + #interrupt-cells = <3>;
> > +
> > + ext_rgmii_pins: rgmii-pins {
> > + pins = "PI0", "PI1", "PI2", "PI3", "PI4",
> > + "PI5", "PI7", "PI8", "PI9", "PI10",
> > + "PI11", "PI12", "PI13", "PI14", "PI15",
> > + "PI16";
> > + function = "emac0";
> > + drive-strength = <40>;
> > + };
> > +
> > + i2c0_pins: i2c0-pins {
> > + pins = "PI6", "PI7";
> > + function = "i2c0";
> > + };
> > +
> > + i2c3_ph_pins: i2c3-ph-pins {
> > + pins = "PH4", "PH5";
> > + function = "i2c3";
> > + };
> > +
> > + ir_rx_pin: ir-rx-pin {
> > + pins = "PH10";
> > + function = "ir_rx";
> > + };
> > +
> > + mmc0_pins: mmc0-pins {
> > + pins = "PF0", "PF1", "PF2", "PF3",
> > + "PF4", "PF5";
> > + function = "mmc0";
> > + drive-strength = <30>;
> > + bias-pull-up;
> > + };
> > +
> > + /omit-if-no-ref/
> > + mmc1_pins: mmc1-pins {
> > + pins = "PG0", "PG1", "PG2", "PG3",
> > + "PG4", "PG5";
> > + function = "mmc1";
> > + drive-strength = <30>;
> > + bias-pull-up;
> > + };
> > +
> > + mmc2_pins: mmc2-pins {
> > + pins = "PC0", "PC1", "PC5", "PC6",
> > + "PC8", "PC9", "PC10", "PC11",
> > + "PC13", "PC14", "PC15", "PC16";
> > + function = "mmc2";
> > + drive-strength = <30>;
> > + bias-pull-up;
> > + };
> > +
> > + /omit-if-no-ref/
> > + spi0_pins: spi0-pins {
> > + pins = "PC0", "PC2", "PC4";
> > + function = "spi0";
> > + };
> > +
> > + /omit-if-no-ref/
> > + spi0_cs0_pin: spi0-cs0-pin {
> > + pins = "PC3";
> > + function = "spi0";
> > + };
> > +
> > + /omit-if-no-ref/
> > + spi1_pins: spi1-pins {
> > + pins = "PH6", "PH7", "PH8";
> > + function = "spi1";
> > + };
> > +
> > + /omit-if-no-ref/
> > + spi1_cs0_pin: spi1-cs0-pin {
> > + pins = "PH5";
> > + function = "spi1";
> > + };
> > +
> > + uart0_ph_pins: uart0-ph-pins {
> > + pins = "PH0", "PH1";
> > + function = "uart0";
> > + };
> > +
> > + /omit-if-no-ref/
> > + uart1_pins: uart1-pins {
> > + pins = "PG6", "PG7";
> > + function = "uart1";
> > + };
> > +
> > + /omit-if-no-ref/
> > + uart1_rts_cts_pins: uart1-rts-cts-pins {
> > + pins = "PG8", "PG9";
> > + function = "uart1";
> > + };
> > + };
> > +
> > + gic: interrupt-controller@...1000 {
> > + compatible = "arm,gic-400";
> > + reg = <0x03021000 0x1000>,
> > + <0x03022000 0x2000>,
> > + <0x03024000 0x2000>,
> > + <0x03026000 0x2000>;
> > + interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
> > + interrupt-controller;
> > + #interrupt-cells = <3>;
> > + };
> > +
> > + mmc0: mmc@...0000 {
> > + compatible = "allwinner,sun50i-h616-mmc",
> > + "allwinner,sun50i-a100-mmc";
> > + reg = <0x04020000 0x1000>;
> > + clocks = <&ccu CLK_BUS_MMC0>, <&ccu CLK_MMC0>;
> > + clock-names = "ahb", "mmc";
> > + resets = <&ccu RST_BUS_MMC0>;
> > + reset-names = "ahb";
> > + interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&mmc0_pins>;
> > + status = "disabled";
> > + max-frequency = <150000000>;
> > + cap-sd-highspeed;
> > + cap-mmc-highspeed;
> > + mmc-ddr-3_3v;
> > + cap-sdio-irq;
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + mmc1: mmc@...1000 {
> > + compatible = "allwinner,sun50i-h616-mmc",
> > + "allwinner,sun50i-a100-mmc";
> > + reg = <0x04021000 0x1000>;
> > + clocks = <&ccu CLK_BUS_MMC1>, <&ccu CLK_MMC1>;
> > + clock-names = "ahb", "mmc";
> > + resets = <&ccu RST_BUS_MMC1>;
> > + reset-names = "ahb";
> > + interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&mmc1_pins>;
> > + status = "disabled";
> > + max-frequency = <150000000>;
> > + cap-sd-highspeed;
> > + cap-mmc-highspeed;
> > + mmc-ddr-3_3v;
> > + cap-sdio-irq;
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + mmc2: mmc@...2000 {
> > + compatible = "allwinner,sun50i-h616-emmc",
> > + "allwinner,sun50i-a100-emmc";
> > + reg = <0x04022000 0x1000>;
> > + clocks = <&ccu CLK_BUS_MMC2>, <&ccu CLK_MMC2>;
> > + clock-names = "ahb", "mmc";
> > + resets = <&ccu RST_BUS_MMC2>;
> > + reset-names = "ahb";
> > + interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&mmc2_pins>;
> > + status = "disabled";
> > + max-frequency = <150000000>;
> > + cap-sd-highspeed;
> > + cap-mmc-highspeed;
> > + mmc-ddr-3_3v;
> > + cap-sdio-irq;
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + uart0: serial@...0000 {
> > + compatible = "snps,dw-apb-uart";
> > + reg = <0x05000000 0x400>;
> > + interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
> > + reg-shift = <2>;
> > + reg-io-width = <4>;
> > + clocks = <&ccu CLK_BUS_UART0>;
> > + resets = <&ccu RST_BUS_UART0>;
> > + status = "disabled";
> > + };
> > +
> > + uart1: serial@...0400 {
> > + compatible = "snps,dw-apb-uart";
> > + reg = <0x05000400 0x400>;
> > + interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
> > + reg-shift = <2>;
> > + reg-io-width = <4>;
> > + clocks = <&ccu CLK_BUS_UART1>;
> > + resets = <&ccu RST_BUS_UART1>;
> > + status = "disabled";
> > + };
> > +
> > + uart2: serial@...0800 {
> > + compatible = "snps,dw-apb-uart";
> > + reg = <0x05000800 0x400>;
> > + interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
> > + reg-shift = <2>;
> > + reg-io-width = <4>;
> > + clocks = <&ccu CLK_BUS_UART2>;
> > + resets = <&ccu RST_BUS_UART2>;
> > + status = "disabled";
> > + };
> > +
> > + uart3: serial@...0c00 {
> > + compatible = "snps,dw-apb-uart";
> > + reg = <0x05000c00 0x400>;
> > + interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
> > + reg-shift = <2>;
> > + reg-io-width = <4>;
> > + clocks = <&ccu CLK_BUS_UART3>;
> > + resets = <&ccu RST_BUS_UART3>;
> > + status = "disabled";
> > + };
> > +
> > + uart4: serial@...1000 {
> > + compatible = "snps,dw-apb-uart";
> > + reg = <0x05001000 0x400>;
> > + interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
> > + reg-shift = <2>;
> > + reg-io-width = <4>;
> > + clocks = <&ccu CLK_BUS_UART4>;
> > + resets = <&ccu RST_BUS_UART4>;
> > + status = "disabled";
> > + };
> > +
> > + uart5: serial@...1400 {
> > + compatible = "snps,dw-apb-uart";
> > + reg = <0x05001400 0x400>;
> > + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
> > + reg-shift = <2>;
> > + reg-io-width = <4>;
> > + clocks = <&ccu CLK_BUS_UART5>;
> > + resets = <&ccu RST_BUS_UART5>;
> > + status = "disabled";
> > + };
> > +
> > + i2c0: i2c@...2000 {
> > + compatible = "allwinner,sun50i-h616-i2c",
> > + "allwinner,sun6i-a31-i2c";
>
> Future note: this will be affected by [1] which adds a fallback compatible for
> variants with offload support. That way we don't have to support them all
> individually in the driver if/when we implement that.
>
> [1]: https://lore.kernel.org/lkml/20220702052544.31443-1-samuel@sholland.org/
I saw (and liked) that. Shall I insert the compatible string already? Or
is it too early for that, because dtbs_checks would fail without the
amended binding in the tree?
Cheers,
Andre
>
> > + reg = <0x05002000 0x400>;
> > + interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_I2C0>;
> > + resets = <&ccu RST_BUS_I2C0>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&i2c0_pins>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + i2c1: i2c@...2400 {
> > + compatible = "allwinner,sun50i-h616-i2c",
> > + "allwinner,sun6i-a31-i2c";
> > + reg = <0x05002400 0x400>;
> > + interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_I2C1>;
> > + resets = <&ccu RST_BUS_I2C1>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + i2c2: i2c@...2800 {
> > + compatible = "allwinner,sun50i-h616-i2c",
> > + "allwinner,sun6i-a31-i2c";
> > + reg = <0x05002800 0x400>;
> > + interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_I2C2>;
> > + resets = <&ccu RST_BUS_I2C2>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + i2c3: i2c@...2c00 {
> > + compatible = "allwinner,sun50i-h616-i2c",
> > + "allwinner,sun6i-a31-i2c";
> > + reg = <0x05002c00 0x400>;
> > + interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_I2C3>;
> > + resets = <&ccu RST_BUS_I2C3>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + i2c4: i2c@...3000 {
> > + compatible = "allwinner,sun50i-h616-i2c",
> > + "allwinner,sun6i-a31-i2c";
> > + reg = <0x05003000 0x400>;
> > + interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_I2C4>;
> > + resets = <&ccu RST_BUS_I2C4>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + spi0: spi@...0000 {
> > + compatible = "allwinner,sun50i-h616-spi",
> > + "allwinner,sun8i-h3-spi";
> > + reg = <0x05010000 0x1000>;
> > + interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>;
> > + clock-names = "ahb", "mod";
> > + resets = <&ccu RST_BUS_SPI0>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + spi1: spi@...1000 {
> > + compatible = "allwinner,sun50i-h616-spi",
> > + "allwinner,sun8i-h3-spi";
> > + reg = <0x05011000 0x1000>;
> > + interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&ccu CLK_BUS_SPI1>, <&ccu CLK_SPI1>;
> > + clock-names = "ahb", "mod";
> > + resets = <&ccu RST_BUS_SPI1>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + emac0: ethernet@...0000 {
> > + compatible = "allwinner,sun50i-h616-emac",
> > + "allwinner,sun50i-a64-emac";
> > + syscon = <&syscon>;
> > + reg = <0x05020000 0x10000>;
> > + interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-names = "macirq";
> > + resets = <&ccu RST_BUS_EMAC0>;
> > + reset-names = "stmmaceth";
> > + clocks = <&ccu CLK_BUS_EMAC0>;
> > + clock-names = "stmmaceth";
>
> Nit: clocks then resets then syscon, to follow the usual order.
>
> > + status = "disabled";
> > +
> > + mdio0: mdio {
> > + compatible = "snps,dwmac-mdio";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > + };
> > +
> > + rtc: rtc@...0000 {
> > + compatible = "allwinner,sun50i-h616-rtc";
> > + reg = <0x07000000 0x400>;
> > + interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&r_ccu CLK_R_APB1_RTC>, <&osc24M>,
> > + <&ccu CLK_PLL_SYSTEM_32K>;
> > + clock-names = "bus", "hosc",
> > + "pll-32k";
> > + clock-output-names = "osc32k", "osc32k-out", "iosc";
>
> Since the RTC clock indices were formalized in the binding, this is no longer
> needed.
>
> > + #clock-cells = <1>;
> > + };
> > +
> > + r_ccu: clock@...0000 {
> > + compatible = "allwinner,sun50i-h616-r-ccu";
> > + reg = <0x07010000 0x210>;
> > + clocks = <&osc24M>, <&rtc 0>, <&rtc 2>,
>
> Symbolic constants here and in r_pio as well, please.
>
> > + <&ccu CLK_PLL_PERIPH0>;
> > + clock-names = "hosc", "losc", "iosc", "pll-periph";
> > + #clock-cells = <1>;
> > + #reset-cells = <1>;
> > + };
> > +
> > + r_pio: pinctrl@...2000 {
> > + compatible = "allwinner,sun50i-h616-r-pinctrl";
> > + reg = <0x07022000 0x400>;
> > + clocks = <&r_ccu CLK_R_APB1>, <&osc24M>, <&rtc 0>;
> > + clock-names = "apb", "hosc", "losc";
> > + gpio-controller;
> > + #gpio-cells = <3>;
> > +
> > + r_i2c_pins: r-i2c-pins {
>
> This is unlikely be used (as opposed to RSB), so I suggest omit-if-no-ref.
>
> > + pins = "PL0", "PL1";
> > + function = "s_i2c";
> > + };
> > +
> > + r_rsb_pins: r-rsb-pins {
> > + pins = "PL0", "PL1";
> > + function = "s_rsb";
> > + };
> > + };
> > +
> > + ir: ir@...0000 {
> > + compatible = "allwinner,sun50i-h616-ir",
> > + "allwinner,sun6i-a31-ir";
> > + reg = <0x07040000 0x400>;
> > + interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&r_ccu CLK_R_APB1_IR>,
> > + <&r_ccu CLK_IR>;
> > + clock-names = "apb", "ir";
> > + resets = <&r_ccu RST_R_APB1_IR>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&ir_rx_pin>;
> > + status = "disabled";
> > + };
> > +
> > + r_i2c: i2c@...1400 {
> > + compatible = "allwinner,sun50i-h616-i2c",
> > + "allwinner,sun6i-a31-i2c";
> > + reg = <0x07081400 0x400>;
> > + interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&r_ccu CLK_R_APB2_I2C>;
> > + resets = <&r_ccu RST_R_APB2_I2C>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > +
> > + r_rsb: rsb@...3000 {
> > + compatible = "allwinner,sun50i-h616-rsb",
> > + "allwinner,sun8i-a23-rsb";
> > + reg = <0x07083000 0x400>;
> > + interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&r_ccu CLK_R_APB2_RSB>;
> > + clock-frequency = <3000000>;
> > + resets = <&r_ccu RST_R_APB2_RSB>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&r_rsb_pins>;
> > + status = "disabled";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + };
> > + };
> > +};
> >
>
>
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