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References: <20220329094446.415219-1-tobetter@gmail.com> <20220329094446.415219-2-tobetter@gmail.com>
 <2a5f002f-8a61-e5b0-a574-ee99591c4c12@kernel.org>
In-Reply-To: <2a5f002f-8a61-e5b0-a574-ee99591c4c12@kernel.org>
From:   Peter Geis <pgwipeout@gmail.com>
Date:   Sat, 16 Apr 2022 08:07:40 -0400
Message-ID: <CAMdYzYrCZtfDiB6O20Jtp56YQhHj3jMVhCt9aCYNLbD_xwFc3g@mail.gmail.com>
Subject: Re: [PATCH 2/2] arm64: dts: rockchip: Add Hardkernel ODROID-M1 board
To:     Krzysztof Kozlowski <krzk@kernel.org>
Cc:     Dongjin Kim <tobetter@gmail.com>, Heiko Stuebner <heiko@sntech.de>,
        devicetree <devicetree@vger.kernel.org>,
        arm-mail-list <linux-arm-kernel@lists.infradead.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, Mar 29, 2022 at 1:13 PM Krzysztof Kozlowski <krzk@kernel.org> wrote:
>
> On 29/03/2022 11:44, Dongjin Kim wrote:
> > This patch is to add a device tree for new board Hardkernel ODROID-M1
> > based on Rockchip RK3568, includes basic peripherals -
> > uart/eMMC/uSD/i2c and on-board ethernet.
>
> I think the email got corrupted (incorrect To addresses).
>
> >
> > Signed-off-by: Dongjin Kim <tobetter@gmail.com>
> > ---
> >  arch/arm64/boot/dts/rockchip/Makefile         |   1 +
> >  .../boot/dts/rockchip/rk3568-odroid-m1.dts    | 406 ++++++++++++++++++
> >  2 files changed, 407 insertions(+)
> >  create mode 100644 arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts
> >
> > diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
> > index 4ae9f35434b8..81d160221227 100644
> > --- a/arch/arm64/boot/dts/rockchip/Makefile
> > +++ b/arch/arm64/boot/dts/rockchip/Makefile
> > @@ -61,3 +61,4 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-pinenote-v1.2.dtb
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-quartz64-a.dtb
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-evb1-v10.dtb
> >  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-bpi-r2-pro.dtb
> > +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-odroid-m1.dtb
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts b/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts
> > new file mode 100644
> > index 000000000000..d1a5d43127e9
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts
> > @@ -0,0 +1,406 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +/*
> > + * Copyright (c) 2022 Hardkernel Co., Ltd.
> > + *
> > + */
> > +
> > +/dts-v1/;
> > +#include <dt-bindings/gpio/gpio.h>
> > +#include <dt-bindings/leds/common.h>
> > +#include <dt-bindings/pinctrl/rockchip.h>
> > +#include "rk3568.dtsi"
> > +
> > +/ {
> > +     model = "Hardkernel ODROID-M1";
> > +     compatible = "rockchip,rk3568-odroid-m1", "rockchip,rk3568";
> > +
> > +     aliases {
> > +             ethernet0 = &gmac0;
> > +             i2c0 = &i2c3;
> > +             i2c3 = &i2c0;
> > +             mmc0 = &sdhci;
> > +             mmc1 = &sdmmc0;
> > +             serial0 = &uart1;
> > +             serial1 = &uart0;
> > +     };
> > +
> > +     chosen: chosen {
>
> No need for label.
>
> > +             stdout-path = "serial2:1500000n8";
> > +     };
> > +
> > +     dc_12v: dc-12v {
>
> Generic node name, so "regulator" or "regulator-0"

Unfortunately, this advice breaks the regulator-fixed driver, which it
seems cannot cope with a bunch of nodes all named "regulator".
Setting the regulators as regulator-0 -1 -2 leads to fun issues where
the regulator numbering in the kernel doesn't match the node numbers.
It also makes it more fun when additional regulators need to be added
and everything gets shuffled around.

If naming these uniquely to avoid confusion and collisions is such an
issue, why is it not caught by make W=1 dtbs_check?

>
> > +             compatible = "regulator-fixed";
> > +             regulator-name = "dc_12v";
> > +             regulator-always-on;
> > +             regulator-boot-on;
> > +             regulator-min-microvolt = <12000000>;
> > +             regulator-max-microvolt = <12000000>;
> > +     };
> > +
> > +     leds: leds {
>
> Label seems unused.
>
> > +             compatible = "gpio-leds";
> > +
> > +             led_power: led-0 {
> > +                     gpios = <&gpio0 RK_PC6 GPIO_ACTIVE_LOW>;
> > +                     function = LED_FUNCTION_POWER;
> > +                     color = <LED_COLOR_ID_RED>;
> > +                     linux,default-trigger = "default-on";
> > +                     pinctrl-names = "default";
> > +                     pinctrl-0 = <&led_power_en>;
> > +             };
> > +             led_work: led-1 {
> > +                     gpios = <&gpio0 RK_PB7 GPIO_ACTIVE_HIGH>;
> > +                     function = LED_FUNCTION_HEARTBEAT;
> > +                     color = <LED_COLOR_ID_BLUE>;
> > +                     linux,default-trigger = "heartbeat";
> > +                     pinctrl-names = "default";
> > +                     pinctrl-0 = <&led_work_en>;
> > +             };
> > +     };
> > +
> > +     vcc3v3_sys: vcc3v3-sys {
>
> Generic node name.
>
> > +             compatible = "regulator-fixed";
> > +             regulator-name = "vcc3v3_sys";
> > +             regulator-always-on;
> > +             regulator-boot-on;
> > +             regulator-min-microvolt = <3300000>;
> > +             regulator-max-microvolt = <3300000>;
> > +             vin-supply = <&dc_12v>;
> > +     };
> > +};
> > +
> > +&cpu0 {
> > +     cpu-supply = <&vdd_cpu>;
> > +};
> > +
> > +&cpu1 {
> > +     cpu-supply = <&vdd_cpu>;
> > +};
> > +
> > +&cpu2 {
> > +     cpu-supply = <&vdd_cpu>;
> > +};
> > +
> > +&cpu3 {
> > +     cpu-supply = <&vdd_cpu>;
> > +};
> > +
> > +&gmac0 {
> > +     assigned-clocks = <&cru SCLK_GMAC0_RX_TX>, <&cru SCLK_GMAC0>;
> > +     assigned-clock-parents = <&cru SCLK_GMAC0_RGMII_SPEED>;
> > +     assigned-clock-rates = <0>, <125000000>;
> > +     clock_in_out = "output";
> > +     phy-handle = <&rgmii_phy0>;
> > +     phy-mode = "rgmii";
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&gmac0_miim
> > +                  &gmac0_tx_bus2
> > +                  &gmac0_rx_bus2
> > +                  &gmac0_rgmii_clk
> > +                  &gmac0_rgmii_bus>;
> > +     status = "okay";
> > +
> > +     tx_delay = <0x4f>;
> > +     rx_delay = <0x2d>;
> > +};
> > +
> > +&i2c0 {
> > +     status = "okay";
> > +
> > +     vdd_cpu: regulator@1c {
> > +             compatible = "tcs,z`";
> > +             reg = <0x1c>;
> > +              fcs,suspend-voltage-selector = <1>;
>
> Mixed up indentation.
>
> > +              regulator-name = "vdd_cpu";
> > +              regulator-always-on;
> > +              regulator-boot-on;
> > +              regulator-min-microvolt = <800000>;
> > +              regulator-max-microvolt = <1150000>;
> > +              regulator-ramp-delay = <2300>;
> > +              vin-supply = <&vcc3v3_sys>;
> > +
> > +              regulator-state-mem {
> > +                      regulator-off-in-suspend;
> > +             };
> > +     };
> > +
> > +     rk809: pmic@20 {
> > +             compatible = "rockchip,rk809";
> > +             reg = <0x20>;
> > +             interrupt-parent = <&gpio0>;
> > +             interrupts = <RK_PA3 IRQ_TYPE_LEVEL_LOW>;
> > +             #clock-cells = <1>;
> > +             pinctrl-names = "default";
> > +             pinctrl-0 = <&pmic_int>;
> > +             rockchip,system-power-controller;
> > +             vcc1-supply = <&vcc3v3_sys>;
> > +             vcc2-supply = <&vcc3v3_sys>;
> > +             vcc3-supply = <&vcc3v3_sys>;
> > +             vcc4-supply = <&vcc3v3_sys>;
> > +             vcc5-supply = <&vcc3v3_sys>;
> > +             vcc6-supply = <&vcc3v3_sys>;
> > +             vcc7-supply = <&vcc3v3_sys>;
> > +             vcc8-supply = <&vcc3v3_sys>;
> > +             vcc9-supply = <&vcc3v3_sys>;
> > +             wakeup-source;
> > +
> > +             regulators {
> > +                     vdd_logic: DCDC_REG1 {
>
> No underscores in node names, unless anything requires it.
>
> > +                             regulator-name = "vdd_logic";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-init-microvolt = <900000>;
> > +                             regulator-initial-mode = <0x2>;
> > +                             regulator-min-microvolt = <500000>;
> > +                             regulator-max-microvolt = <1350000>;
> > +                             regulator-ramp-delay = <6001>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vdd_gpu: DCDC_REG2 {
> > +                             regulator-name = "vdd_gpu";
> > +                             regulator-init-microvolt = <900000>;
> > +                             regulator-initial-mode = <0x2>;
> > +                             regulator-min-microvolt = <500000>;
> > +                             regulator-max-microvolt = <1350000>;
> > +                             regulator-ramp-delay = <6001>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vcc_ddr: DCDC_REG3 {
> > +                             regulator-name = "vcc_ddr";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-initial-mode = <0x2>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-on-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vdd_npu: DCDC_REG4 {
> > +                             regulator-name = "vdd_npu";
> > +                             regulator-init-microvolt = <900000>;
> > +                             regulator-initial-mode = <0x2>;
> > +                             regulator-min-microvolt = <500000>;
> > +                             regulator-max-microvolt = <1350000>;
> > +                             regulator-ramp-delay = <6001>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vcc_1v8: DCDC_REG5 {
> > +                             regulator-name = "vcc_1v8";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-min-microvolt = <1800000>;
> > +                             regulator-max-microvolt = <1800000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vdda0v9_image: LDO_REG1 {
> > +                             regulator-name = "vdda0v9_image";
> > +                             regulator-min-microvolt = <900000>;
> > +                             regulator-max-microvolt = <900000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vdda_0v9: LDO_REG2 {
> > +                             regulator-name = "vdda_0v9";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-min-microvolt = <900000>;
> > +                             regulator-max-microvolt = <900000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vdda0v9_pmu: LDO_REG3 {
> > +                             regulator-name = "vdda0v9_pmu";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-min-microvolt = <900000>;
> > +                             regulator-max-microvolt = <900000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-on-in-suspend;
> > +                                     regulator-suspend-microvolt = <900000>;
> > +                             };
> > +                     };
> > +
> > +                     vccio_acodec: LDO_REG4 {
> > +                             regulator-name = "vccio_acodec";
> > +                             regulator-min-microvolt = <3300000>;
> > +                             regulator-max-microvolt = <3300000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vccio_sd: LDO_REG5 {
> > +                             regulator-name = "vccio_sd";
> > +                             regulator-min-microvolt = <1800000>;
> > +                             regulator-max-microvolt = <3300000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vcc3v3_pmu: LDO_REG6 {
> > +                             regulator-name = "vcc3v3_pmu";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-min-microvolt = <3300000>;
> > +                             regulator-max-microvolt = <3300000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-on-in-suspend;
> > +                                     regulator-suspend-microvolt = <3300000>;
> > +                             };
> > +                     };
> > +
> > +                     vcca_1v8: LDO_REG7 {
> > +                             regulator-name = "vcca_1v8";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-min-microvolt = <1800000>;
> > +                             regulator-max-microvolt = <1800000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vcca1v8_pmu: LDO_REG8 {
> > +                             regulator-name = "vcca1v8_pmu";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +                             regulator-min-microvolt = <1800000>;
> > +                             regulator-max-microvolt = <1800000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-on-in-suspend;
> > +                                     regulator-suspend-microvolt = <1800000>;
> > +                             };
> > +                     };
> > +
> > +                     vcca1v8_image: LDO_REG9 {
> > +                             regulator-name = "vcca1v8_image";
> > +                             regulator-min-microvolt = <1800000>;
> > +                             regulator-max-microvolt = <1800000>;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vcc_3v3: SWITCH_REG1 {
> > +                             regulator-name = "vcc_3v3";
> > +                             regulator-always-on;
> > +                             regulator-boot-on;
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +
> > +                     vcc3v3_sd: SWITCH_REG2 {
> > +                             regulator-name = "vcc3v3_sd";
> > +
> > +                             regulator-state-mem {
> > +                                     regulator-off-in-suspend;
> > +                             };
> > +                     };
> > +             };
> > +     };
> > +};
> > +
> > +&mdio0 {
> > +     rgmii_phy0: ethernet-phy@0 {
> > +             compatible = "ethernet-phy-ieee802.3-c22";
> > +             reg = <0x0>;
> > +             reset-assert-us = <20000>;
> > +             reset-deassert-us = <100000>;
> > +             reset-gpios = <&gpio3 RK_PB7 GPIO_ACTIVE_LOW>;
> > +     };
> > +};
> > +
> > +&pinctrl {
> > +     leds {
> > +             led_power_en: led_power_en {
>
> No underscores in node names. Do bindings require specific naming? I
> would expect "-grp" or "-pins" suffixes, if possible.
>
> > +                     rockchip,pins = <0 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
> > +             };
> > +             led_work_en: led_work_en {
> > +                     rockchip,pins = <0 RK_PB7 RK_FUNC_GPIO &pcfg_pull_none>;
> > +             };
> > +     };
> > +
> > +     pmic {
> > +             pmic_int: pmic_int {
> > +                     rockchip,pins =
> > +                             <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_up>;
> > +             };
> > +     };
> > +};
> > +
> > +&pmu_io_domains {
> > +     pmuio1-supply = <&vcc3v3_pmu>;
> > +     pmuio2-supply = <&vcc3v3_pmu>;
> > +     vccio1-supply = <&vccio_acodec>;
> > +     vccio2-supply = <&vcc_1v8>;
> > +     vccio3-supply = <&vccio_sd>;
> > +     vccio4-supply = <&vcc_1v8>;
> > +     vccio5-supply = <&vcc_3v3>;
> > +     vccio6-supply = <&vcc_3v3>;
> > +     vccio7-supply = <&vcc_3v3>;
> > +     status = "okay";
> > +};
> > +
> > +&saradc {
> > +     vref-supply = <&vcca_1v8>;
> > +     status = "okay";
> > +};
> > +
> > +&sdhci {
> > +     bus-width = <8>;
> > +     max-frequency = <200000000>;
> > +     non-removable;
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd &emmc_datastrobe &emmc_rstnout>;
> > +     status = "okay";
> > +};
> > +
> > +&sdmmc0 {
> > +     bus-width = <4>;
> > +     cap-sd-highspeed;
> > +     cd-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_LOW>;
> > +     disable-wp;
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&sdmmc0_bus4 &sdmmc0_clk &sdmmc0_cmd &sdmmc0_det>;
> > +     sd-uhs-sdr104;
> > +     vmmc-supply = <&vcc3v3_sd>;
> > +     vqmmc-supply = <&vccio_sd>;
> > +     status = "okay";
> > +};
> > +
> > +&uart2 {
> > +     status = "okay";
> > +};
>
>
> Best regards,
> Krzysztof
>
> _______________________________________________
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