Message-ID: <b6b33f15-ead3-d703-47bb-44a1350c0936@gmail.com>
Date:   Sun, 28 Nov 2021 12:00:11 -0500
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Subject: Re: [PATCH v3 12/13] ARM: dts: imx: add i.MXRT1050-EVK support
Content-Language: en-US
To:     Rob Herring <robh@kernel.org>
Cc:     linux-imx@nxp.com, mturquette@baylibre.com, sboyd@kernel.org,
        shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de,
        festevam@gmail.com, ulf.hansson@linaro.org, aisheng.dong@nxp.com,
        stefan@agner.ch, linus.walleij@linaro.org,
        gregkh@linuxfoundation.org, arnd@arndb.de, olof@lixom.net,
        soc@kernel.org, linux@armlinux.org.uk, abel.vesa@nxp.com,
        adrian.hunter@intel.com, jirislaby@kernel.org,
        giulio.benetti@benettiengineering.com,
        nobuhiro1.iwamatsu@toshiba.co.jp, linux-clk@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
        linux-gpio@vger.kernel.org, linux-serial@vger.kernel.org
References: <20211125211443.1150135-1-Mr.Bossman075@gmail.com>
 <20211125211443.1150135-13-Mr.Bossman075@gmail.com>
 <YaOxu441l41qPvTj@robh.at.kernel.org>
From:   Jesse Taube <mr.bossman075@gmail.com>
In-Reply-To: <YaOxu441l41qPvTj@robh.at.kernel.org>
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On 11/28/21 11:43, Rob Herring wrote:
> On Thu, Nov 25, 2021 at 04:14:42PM -0500, Jesse Taube wrote:
>> From: Giulio Benetti <giulio.benetti@benettiengineering.com>
>>
>> The NXP i.MXRT1050 Evaluation Kit (EVK) provides a platform for rapid
>> evaluation of the i.MXRT, which features NXP's implementation of the Arm
>> Cortex-M7 core.
>>
>> The EVK provides 32 MB SDRAM, 64 MB Quad SPI flash, Micro SD card socket,
>> USB 2.0 OTG.
>>
>> This patch aims to support the preliminary booting up features
>> as follows:
>> GPIO
>> LPUART
>> SD/MMC
>>
>> Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
>> Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
>> [Jesse: Add clock-parents, edma, usdhc, anatop, remove old pinctl]
>> ---
>> V1->V2:
>> * dtsi: Add clock parent definitions
>> * dtsi: Change hex values to lowercase
>> * dtsi: Move anatop definition from driver
>> * dts: Remove unused pin controll (semc)
>> * dts: Use moved pin controll header
>> * Move aliases from dtsi to dts
>> * Change commit description
>> * Change licence to "GPL-2.0+ OR MIT"
>> V2->V3:
>> * Remove bootargs, comments, unused container
>> * Remove unnecessary new lines
>> * Rename imxrt to imxrt1050 for seiral and mmc
>> * GPT uses own clock
>> * fix memory@0
>> * Change GPT compatible handles
>> ---
>>   arch/arm/boot/dts/Makefile          |   2 +
>>   arch/arm/boot/dts/imxrt1050-evk.dts |  72 ++++++++++++
>>   arch/arm/boot/dts/imxrt1050.dtsi    | 165 ++++++++++++++++++++++++++++
>>   3 files changed, 239 insertions(+)
>>   create mode 100644 arch/arm/boot/dts/imxrt1050-evk.dts
>>   create mode 100644 arch/arm/boot/dts/imxrt1050.dtsi
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index 8a2dfdf01ce3..d539bf7daa86 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -723,6 +723,8 @@ dtb-$(CONFIG_SOC_IMX7D) += \
>>   dtb-$(CONFIG_SOC_IMX7ULP) += \
>>   	imx7ulp-com.dtb \
>>   	imx7ulp-evk.dtb
>> +dtb-$(CONFIG_SOC_IMXRT) += \
>> +	imxrt1050-evk.dtb
>>   dtb-$(CONFIG_SOC_LS1021A) += \
>>   	ls1021a-moxa-uc-8410a.dtb \
>>   	ls1021a-qds.dtb \
>> diff --git a/arch/arm/boot/dts/imxrt1050-evk.dts b/arch/arm/boot/dts/imxrt1050-evk.dts
>> new file mode 100644
>> index 000000000000..6a9c10decf52
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/imxrt1050-evk.dts
>> @@ -0,0 +1,72 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019
>> + * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
>> + */
>> +
>> +/dts-v1/;
>> +#include "imxrt1050.dtsi"
>> +#include "imxrt1050-pinfunc.h"
>> +
>> +/ {
>> +	model = "NXP IMXRT1050-evk board";
>> +	compatible = "fsl,imxrt1050-evk", "fsl,imxrt1050";
>> +
>> +	chosen {
>> +		stdout-path = &lpuart1;
>> +	};
>> +
>> +	aliases {
>> +		gpio0 = &gpio1;
>> +		gpio1 = &gpio2;
>> +		gpio2 = &gpio3;
>> +		gpio3 = &gpio4;
>> +		gpio4 = &gpio5;
>> +		mmc0 = &usdhc1;
>> +		serial0 = &lpuart1;
>> +	};
>> +
>> +	memory@80000000 {
>> +		device_type = "memory";
>> +		reg = <0x80000000 0x2000000>;
>> +	};
>> +};
>> +
>> +&lpuart1 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_lpuart1>;
>> +	status = "okay";
>> +};
>> +
>> +&iomuxc {
>> +	pinctrl-names = "default";
>> +	pinctrl_lpuart1: lpuart1grp {
>> +		fsl,pins = <
>> +			MXRT1050_IOMUXC_GPIO_AD_B0_12_LPUART1_TXD	0xf1
>> +			MXRT1050_IOMUXC_GPIO_AD_B0_13_LPUART1_RXD	0xf1
>> +		>;
>> +	};
>> +
>> +	pinctrl_usdhc0: usdhc0grp {
>> +		fsl,pins = <
>> +			MXRT1050_IOMUXC_GPIO_B1_12_USDHC1_CD_B		0x1B000
>> +			MXRT1050_IOMUXC_GPIO_B1_14_USDHC1_VSELECT	0xB069
>> +			MXRT1050_IOMUXC_GPIO_SD_B0_00_USDHC1_CMD	0x17061
>> +			MXRT1050_IOMUXC_GPIO_SD_B0_01_USDHC1_CLK	0x17061
>> +			MXRT1050_IOMUXC_GPIO_SD_B0_05_USDHC1_DATA3	0x17061
>> +			MXRT1050_IOMUXC_GPIO_SD_B0_04_USDHC1_DATA2	0x17061
>> +			MXRT1050_IOMUXC_GPIO_SD_B0_03_USDHC1_DATA1	0x17061
>> +			MXRT1050_IOMUXC_GPIO_SD_B0_02_USDHC1_DATA0	0x17061
>> +		>;
>> +	};
>> +};
>> +
>> +&usdhc1 {
>> +	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
>> +	pinctrl-0 = <&pinctrl_usdhc0>;
>> +	pinctrl-1 = <&pinctrl_usdhc0>;
>> +	pinctrl-2 = <&pinctrl_usdhc0>;
>> +	pinctrl-3 = <&pinctrl_usdhc0>;
>> +	cd-gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
>> +	status = "okay";
>> +};
>> diff --git a/arch/arm/boot/dts/imxrt1050.dtsi b/arch/arm/boot/dts/imxrt1050.dtsi
>> new file mode 100644
>> index 000000000000..35943a6896fa
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/imxrt1050.dtsi
>> @@ -0,0 +1,165 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019
>> + * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
>> + */
>> +
>> +#include "armv7-m.dtsi"
>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> +#include <dt-bindings/clock/imxrt1050-clock.h>
>> +#include <dt-bindings/gpio/gpio.h>
>> +
>> +/ {
>> +	#address-cells = <1>;
>> +	#size-cells = <1>;
>> +
>> +	clocks {
>> +		osc: osc {
>> +			compatible = "fsl,imx-osc", "fixed-clock";
> 
> fsl,imx-osc is not documented. IMO, just drop it.
Other imx device trees have it, should i still?
> 
>> +			#clock-cells = <0>;
>> +			clock-frequency = <24000000>;
>> +		};
>> +	};
>> +
>> +	cpus {
>> +		#address-cells = <0x01>;
>> +		#size-cells = <0x00>;
>> +
>> +		cpu@0 {
>> +			compatible = "arm,cortex-m7";
> 
> Not documented.
> 
> Please run schema validation checks and don't add any new warnings not
> already present for i.MX.
Ah sorry was from u-boot.
> 
>> +			device_type = "cpu";
>> +			reg = <0x00>;
>> +		};
>> +	};
>> +
>> +	soc {
>> +		lpuart1: serial@40184000 {
>> +			compatible = "fsl,imxrt1050-lpuart","fsl,imx8mm-uart", "fsl,imx6q-uart";
> 
> space                                                       ^
> 
>> +			reg = <0x40184000 0x4000>;
>> +			interrupts = <20>;
>> +			clocks = <&clks IMXRT1050_CLK_LPUART1>;
>> +			clock-names = "ipg";
>> +			status = "disabled";
>> +		};
>> +
>> +		iomuxc: iomuxc@401f8000 {
> 
> pinctrl@...
> 
>> +			compatible = "fsl,imxrt1050-iomuxc";
>> +			reg = <0x401f8000 0x4000>;
>> +			fsl,mux_mask = <0x7>;
>> +		};
>> +
>> +		anatop: anatop@400d8000 {
>> +			compatible = "fsl,imxrt-anatop";
>> +			reg = <0x400d8000 0x4000>;
>> +		};
>> +
>> +		clks: ccm@400fc000 {
> 
> clock-controller@...
> 
>> +			compatible = "fsl,imxrt1050-ccm";
>> +			reg = <0x400fc000 0x4000>;
>> +			interrupts = <95>, <96>;
>> +			clocks = <&osc>;
>> +			clock-names = "osc";
>> +			#clock-cells = <1>;
>> +			assigned-clocks = <&clks IMXRT1050_CLK_PLL1_BYPASS>,
>> +				<&clks IMXRT1050_CLK_PLL1_BYPASS>,
>> +				<&clks IMXRT1050_CLK_PLL2_BYPASS>,
>> +				<&clks IMXRT1050_CLK_PLL3_BYPASS>,
>> +				<&clks IMXRT1050_CLK_PLL3_PFD1_664_62M>,
>> +				<&clks IMXRT1050_CLK_PLL2_PFD2_396M>;
>> +			assigned-clock-parents = <&clks IMXRT1050_CLK_PLL1_REF_SEL>,
>> +				<&clks IMXRT1050_CLK_PLL1_ARM>,
>> +				<&clks IMXRT1050_CLK_PLL2_SYS>,
>> +				<&clks IMXRT1050_CLK_PLL3_USB_OTG>,
>> +				<&clks IMXRT1050_CLK_PLL3_USB_OTG>,
>> +				<&clks IMXRT1050_CLK_PLL2_SYS>;
>> +		};
>> +
>> +		edma1: dma-controller@400e8000 {
>> +			#dma-cells = <2>;
>> +			compatible = "fsl,imx7ulp-edma";
>> +			reg = <0x400e8000 0x4000>,
>> +				<0x400ec000 0x4000>;
>> +			dma-channels = <32>;
>> +			interrupts = <0>, <1>, <2>, <3>, <4>, <5>, <6>, <7>, <8>,
>> +				<9>, <10>, <11>, <12>, <13>, <14>, <15>, <16>;
>> +			clock-names = "dma", "dmamux0";
>> +			clocks = <&clks IMXRT1050_CLK_DMA>,
>> +				 <&clks IMXRT1050_CLK_DMA_MUX>;
>> +		};
>> +
>> +		usdhc1: mmc@402c0000 {
>> +			compatible ="fsl,imxrt1050-usdhc";
>> +			reg = <0x402c0000 0x4000>;
>> +			interrupts = <110>;
>> +			clocks = <&clks IMXRT1050_CLK_IPG_PDOF>,
>> +				<&clks IMXRT1050_CLK_OSC>,
>> +				<&clks IMXRT1050_CLK_USDHC1>;
>> +			clock-names = "ipg", "ahb", "per";
>> +			bus-width = <4>;
>> +			fsl,wp-controller;
>> +			no-1-8-v;
>> +			max-frequency = <4000000>;
>> +			fsl,tuning-start-tap = <20>;
>> +			fsl,tuning-step= <2>;
>> +			status = "disabled";
>> +		};
>> +
>> +		gpio1: gpio@401b8000 {
>> +			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
> 
> Not SoC specific?
fsl,imxrt-gpio is a placeholder, it is compatible with imx35.
> 
>> +			reg = <0x401b8000 0x4000>;
>> +			interrupts = <80>, <81>;
>> +			gpio-controller;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +
>> +		gpio2: gpio@401bc000 {
>> +			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
>> +			reg = <0x401bc000 0x4000>;
>> +			interrupts = <82>, <83>;
>> +			gpio-controller;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +
>> +		gpio3: gpio@401c0000 {
>> +			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
>> +			reg = <0x401c0000 0x4000>;
>> +			interrupts = <84>, <85>;
>> +			gpio-controller;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +
>> +		gpio4: gpio@401c4000 {
>> +			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
>> +			reg = <0x401c4000 0x4000>;
>> +			interrupts = <86>, <87>;
>> +			gpio-controller;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +
>> +		gpio5: gpio@400c0000 {
>> +			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
>> +			reg = <0x400c0000 0x4000>;
>> +			interrupts = <88>, <89>;
>> +			gpio-controller;
>> +			#gpio-cells = <2>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +		};
>> +
>> +		gpt: timer@401ec000 {
>> +			compatible = "fsl,imxrt1050-gpt", "fsl,imx6dl-gpt", "fsl,imx6sl-gpt";
>> +			reg = <0x401ec000 0x4000>;
>> +			interrupts = <100>;
>> +			clocks = <&clks IMXRT1050_CLK_GPT>;
>> +			clock-names = "per";
>> +		};
>> +	};
>> +};
>> -- 
>> 2.34.0
>>
>>