Re: [PATCHv3 5/7] ARM: at91: dt: add device tree file for SAMA5D4ek board

From: Nicolas Ferre
Date: Fri Sep 19 2014 - 08:27:22 EST

On 15/09/2014 18:15, Alexandre Belloni :
> From: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
>
> Add reference SAMA5D4-EK platform DT file.
>
> Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
> Signed-off-by: Josh Wu <josh.wu@xxxxxxxxx>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/Makefile | 2 +
> arch/arm/boot/dts/at91-sama5d4ek.dts | 308 +++++++++++++++++++++++++++++++++++
> 2 files changed, 310 insertions(+)
> create mode 100644 arch/arm/boot/dts/at91-sama5d4ek.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 75c7b7425c79..a7df6aeb5a1a 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -48,6 +48,8 @@ dtb-$(CONFIG_ARCH_AT91) += sama5d33ek.dtb
> dtb-$(CONFIG_ARCH_AT91) += sama5d34ek.dtb
> dtb-$(CONFIG_ARCH_AT91) += sama5d35ek.dtb
> dtb-$(CONFIG_ARCH_AT91) += sama5d36ek.dtb
> +# sama5d4
> +dtb-$(CONFIG_ARCH_AT91) += at91-sama5d4ek.dtb
>
> dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb
> dtb-$(CONFIG_ARCH_AXXIA) += axm5516-amarillo.dtb
> diff --git a/arch/arm/boot/dts/at91-sama5d4ek.dts b/arch/arm/boot/dts/at91-sama5d4ek.dts
> new file mode 100644
> index 000000000000..aa01c2610c6d
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91-sama5d4ek.dts
> @@ -0,0 +1,308 @@
> +/*
> + * sama5d4ek.dts - Device Tree file for SAMA5D4 Evaluation Kit
> + *
> + * Copyright (C) 2014 Atmel,
> + * 2014 Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
> + *
> + * This file is dual-licensed: you can use it either under the terms
> + * of the GPL or the X11 license, at your option. Note that this dual
> + * licensing only applies to this file, and not this project as a
> + * whole.
> + *
> + * a) This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of the
> + * License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * Or, alternatively,
> + *
> + * b) Permission is hereby granted, free of charge, to any person
> + * obtaining a copy of this software and associated documentation
> + * files (the "Software"), to deal in the Software without
> + * restriction, including without limitation the rights to use,
> + * copy, modify, merge, publish, distribute, sublicense, and/or
> + * sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following
> + * conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> + * included in all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
> + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + */
> +/dts-v1/;
> +#include "sama5d4.dtsi"
> +
> +/ {
> + model = "Atmel SAMA5D4-EK";
> + compatible = "atmel,sama5d4ek", "atmel,sama5d4", "atmel,sama5";
> +
> + chosen {
> + bootargs = "console=ttyS0,115200 ignore_loglevel earlyprintk";
> + };
> +
> + memory {
> + reg = <0x20000000 0x20000000>;
> + };
> +
> + clocks {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + main_clock: clock@0 {
> + compatible = "atmel,osc", "fixed-clock";
> + clock-frequency = <12000000>;
> + };
> +
> + slow_xtal {
> + clock-frequency = <32768>;
> + };
> +
> + main_xtal {
> + clock-frequency = <12000000>;
> + };
> + };
> +
> + ahb {
> + apb {
> + lcd_bus@f0000000 {
> + status = "okay";
> +
> + lcd@f0000000 {
> + status = "okay";
> + };
> +
> + lcdovl1@f0000140 {
> + status = "okay";
> + };
> +
> + lcdovl2@f0000240 {
> + status = "okay";
> + };
> +
> + lcdheo1@f0000340 {
> + status = "okay";
> + };
> + };
> +
> + adc0: adc@fc034000 {
> + /* The vref depends on JP22 of EK. If connect 1-2 then use 3.3V. connect 2-3 use 3.0V */
> + atmel,adc-vref = <3300>;
> + /*atmel,adc-ts-wires = <4>;*/ /* Set up ADC touch screen */
> + status = "okay"; /* Enable ADC IIO support */
> + };
> +
> + mmc0: mmc@f8000000 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_cd>;
> + slot@1 {
> + reg = <1>;
> + bus-width = <4>;
> + cd-gpios = <&pioE 5 0>;
> + };
> + };
> +
> + spi0: spi@f8010000 {
> + cs-gpios = <&pioC 3 0>, <0>, <0>, <0>;
> + status = "okay";
> + m25p80@0 {
> + compatible = "atmel,at25df321a";
> + spi-max-frequency = <50000000>;
> + reg = <0>;
> + };
> + };
> +
> + i2c0: i2c@f8014000 {
> + status = "okay";
> + pmic: act8865@5b {
> + compatible = "active-semi,act8865";

I remove the PMIC entry here because of the issues with this component
i2c handling. More details at:
http://www.active-semi.com/sheets/ACT8865_Datasheet.pdf

The solution is to enable the desired regulators in the bootloader and
then shut down the i2c interface completely.

I'll do it while integrating the patch in my PR: no need to re-send.

Thanks, bye.

> + reg = <0x5b>;
> + status = "okay";
> +
> + regulators {
> + vcc_1v8_reg: DCDC_REG1 {
> + regulator-name = "VCC_1V8";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-always-on;
> + };
> +
> + vcc_1v2_reg: DCDC_REG2 {
> + regulator-name = "1V2_HDMI";
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + regulator-always-on;
> + };
> +
> + vcc_3v3_reg: DCDC_REG3 {
> + regulator-name = "VCC_3V3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> +
> + vdd_2v5_reg: LDO_REG1 {
> + regulator-name = "FUSE_2V5";
> + regulator-min-microvolt = <2500000>;
> + regulator-max-microvolt = <2500000>;
> + };
> +
> + vdd_3v3_reg: LDO_REG2 {
> + regulator-name = "VDDANA";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> +
> + vdd_1v8_reg: LDO_REG3 {
> + regulator-name = "1V8_AUDIO";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-always-on;
> + };
> + };
> + };
> + };
> +
> + macb0: ethernet@f8020000 {
> + phy-mode = "rmii";
> + status = "okay";
> + };
> +
> + mmc1: mmc@fc000000 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_mmc1_clk_cmd_dat0 &pinctrl_mmc1_dat1_3 &pinctrl_mmc1_cd>;
> + status = "okay";
> + slot@0 {
> + reg = <0>;
> + bus-width = <4>;
> + cd-gpios = <&pioE 6 0>;
> + };
> + };
> +
> + usart2: serial@fc008000 {
> + status = "okay";
> + };
> +
> + usart3: serial@fc00c000 {
> + status = "okay";
> + };
> +
> + usart4: serial@fc010000 {
> + status = "okay";
> + };
> +
> + watchdog@fc068640 {
> + status = "okay";
> + };
> +
> + pinctrl@fc06a000 {
> + board {
> + pinctrl_mmc0_cd: mmc0_cd {
> + atmel,pins =
> + <AT91_PIOE 5 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
> + };
> + pinctrl_mmc1_cd: mmc1_cd {
> + atmel,pins =
> + <AT91_PIOE 6 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
> + };
> + pinctrl_usba_vbus: usba_vbus {
> + atmel,pins =
> + <AT91_PIOE 31 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;
> + };
> + pinctrl_key_gpio: key_gpio_0 {
> + atmel,pins =
> + <AT91_PIOE 13 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>; /* PE13 gpio */
> + };
> + };
> + };
> + };
> +
> + usb0: gadget@00400000 {
> + atmel,vbus-gpio = <&pioE 31 GPIO_ACTIVE_HIGH>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usba_vbus>;
> + status = "okay";
> + };
> +
> + usb1: ohci@00500000 {
> + num-ports = <3>;
> + atmel,vbus-gpio = <0 /* &pioE 10 GPIO_ACTIVE_LOW */
> + &pioE 11 GPIO_ACTIVE_LOW
> + &pioE 12 GPIO_ACTIVE_LOW
> + >;
> + status = "okay";
> + };
> +
> + usb2: ehci@00600000 {
> + status = "okay";
> + };
> +
> + nand0: nand@80000000 {
> + nand-bus-width = <8>;
> + nand-ecc-mode = "hw";
> + nand-on-flash-bbt;
> + atmel,has-pmecc;
> + status = "okay";
> +
> + at91bootstrap@0 {
> + label = "at91bootstrap";
> + reg = <0x0 0x40000>;
> + };
> +
> + bootloader@40000 {
> + label = "bootloader";
> + reg = <0x40000 0x80000>;
> + };
> +
> + bootloaderenv@c0000 {
> + label = "bootloader env";
> + reg = <0xc0000 0xc0000>;
> + };
> +
> + dtb@180000 {
> + label = "device tree";
> + reg = <0x180000 0x80000>;
> + };
> +
> + kernel@200000 {
> + label = "kernel";
> + reg = <0x200000 0x600000>;
> + };
> +
> + rootfs@800000 {
> + label = "rootfs";
> + reg = <0x800000 0x0f800000>;
> + };
> + };
> + };
> +
> + gpio_keys {
> + compatible = "gpio-keys";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_key_gpio>;
> +
> + pb_user1 {
> + label = "pb_user1";
> + gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
> + linux,code = <0x100>;
> + gpio-key,wakeup;
> + };
> + };
> +};
>


--
Nicolas Ferre
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