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Message-ID: <03f0f635-3fc2-085b-20e0-e1fcaa9e8062@microchip.com>
Date: Thu, 14 Jun 2018 14:52:25 +0200
From: Nicolas Ferre <nicolas.ferre@...rochip.com>
To: Ben Whitten <ben.whitten@...il.com>, <devicetree@...r.kernel.org>
CC: Ben Whitten <ben.whitten@...rdtech.com>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/4] arm: dts: add support for Laird WB45N cpu module and
DVK
On 14/06/2018 at 10:51, Ben Whitten wrote:
> Signed-off-by: Ben Whitten <ben.whitten@...rdtech.com>
> ---
> arch/arm/boot/dts/Makefile | 3 +-
> arch/arm/boot/dts/at91-wb45n.dts | 66 +++++++++++++++
> arch/arm/boot/dts/at91-wb45n.dtsi | 169 ++++++++++++++++++++++++++++++++++++++
> 3 files changed, 237 insertions(+), 1 deletion(-)
> create mode 100644 arch/arm/boot/dts/at91-wb45n.dts
> create mode 100644 arch/arm/boot/dts/at91-wb45n.dtsi
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 7e24249..1ee94ee 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -42,7 +42,8 @@ dtb-$(CONFIG_SOC_AT91SAM9) += \
> at91sam9g25ek.dtb \
> at91sam9g35ek.dtb \
> at91sam9x25ek.dtb \
> - at91sam9x35ek.dtb
> + at91sam9x35ek.dtb \
> + at91-wb45n.dtb
> dtb-$(CONFIG_SOC_SAM_V7) += \
> at91-kizbox2.dtb \
> at91-nattis-2-natte-2.dtb \
> diff --git a/arch/arm/boot/dts/at91-wb45n.dts b/arch/arm/boot/dts/at91-wb45n.dts
> new file mode 100644
> index 0000000..4e88815
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91-wb45n.dts
> @@ -0,0 +1,66 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * at91-wb45n.dts - Device Tree file for WB45NBT board
> + *
> + * Copyright (C) 2018 Laird
> + *
> +*/
> +/dts-v1/;
> +#include "at91-wb45n.dtsi"
> +
> +/ {
> + model = "Laird Workgroup Bridge 45N - Atmel AT91SAM (dt)";
> + compatible = "laird,wb45n", "laird,wbxx", "atmel,at91sam9x5", "atmel,at91sam9";
"laird" prefix must be added to
Documentation/devicetree/bindings/vendor-prefixes.txt before using it:
you can do a little patch as a first patch of this series.
Otherwise it will trigger a warning message while running
scripts/checkpatch.pl on top of your patch.
> +
> + ahb {
> + apb {
> + watchdog@...ffe40 {
> + status = "okay";
> + };
> + };
> + };
> +
> + gpio_keys {
> + compatible = "gpio-keys";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + irqbtn@...8 {
I'm not sure that the @pb18 can be used like this. This address
extension must be used in a "reg" property in the node. dtc used with
warning switch on might trigger an error for this.
> + label = "IRQBTN";
> + linux,code = <99>;
> + gpios = <&pioB 18 GPIO_ACTIVE_LOW>;
> + gpio-key,wakeup = <1>;
> + };
> + };
> +};
> +
> +&usb0 {
> + status = "okay";
> +};
> +
> +&mmc0 {
> + status = "okay";
> +};
> +
> +&spi0 {
> + status = "okay";
> +};
> +
> +&macb0 {
> + status = "okay";
> +};
> +
> +&dbgu {
> + status = "okay";
> +};
> +
> +&usart0 {
> + status = "okay";
> +};
> +
> +&usart3 {
> + status = "okay";
> +};
> +
> +&i2c1 {
> + status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/at91-wb45n.dtsi b/arch/arm/boot/dts/at91-wb45n.dtsi
> new file mode 100644
> index 0000000..2fa58e2
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91-wb45n.dtsi
> @@ -0,0 +1,169 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * at91-wb45n.dtsi - Device Tree file for WB45NBT board
> + *
> + * Copyright (C) 2018 Laird
> + *
> + */
> +
> +#include "at91sam9g25.dtsi"
> +
> +/ {
> + model = "Laird Workgroup Bridge 45N - Atmel AT91SAM (dt)";
> + compatible = "laird,wb45n", "laird,wbxx", "atmel,at91sam9x5", "atmel,at91sam9";
> +
> + chosen {
> + bootargs = "ubi.mtd=6 root=ubi0:rootfs rootfstype=ubifs rw";
> + stdout-path = "serial0:115200n8";
> + };
> +
> + memory {
> + reg = <0x20000000 0x4000000>;
> + };
> +
> + ahb {
> + apb {
> + shdwc@...ffe10 {
I would advice you to take exactly the node name:
"shutdown-controller@...ffe10"; Anyway, it will go away after you use
the label notation as advised by Alexandre.
> + atmel,wakeup-mode = "low";
> + };
> +
> + pinctrl@...ff400 {
> + usb2 {
> + pinctrl_board_usb2: usb2-board {
> + atmel,pins =
> + <AT91_PIOB 11 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>; /* PB11 gpio vbus sense, deglitch */
> + };
> + };
> + };
> +
> + rstc@...ffe00 {
> + compatible = "atmel,sama5d3-rstc";
> + };
I don't think this node is needed.
> +
> + };
> + };
> +
> + atheros {
> + compatible = "atheros,ath6kl";
> + atheros,board-id = "SD32";
> + };
> +};
> +
> +&slow_xtal {
> + clock-frequency = <32768>;
> +};
> +
> +&main_xtal {
> + clock-frequency = <12000000>;
> +};
> +
> +&ebi {
> + status = "okay";
> + nand_controller: nand-controller {
> + pinctrl-0 = <&pinctrl_nand_cs &pinctrl_nand_rb &pinctrl_nand_oe_we>;
> + pinctrl-names = "default";
> + status = "okay";
> +
> + nand@3 {
> + reg = <0x3 0x0 0x800000>;
> + rb-gpios = <&pioD 5 GPIO_ACTIVE_HIGH>;
> + cs-gpios = <&pioD 4 GPIO_ACTIVE_HIGH>;
> + nand-bus-width = <8>;
> + nand-ecc-mode = "hw";
> + nand-ecc-strength = <4>;
> + nand-ecc-step-size = <512>;
> + nand-on-flash-bbt;
> + label = "atmel_nand";
> +
> + partitions {
> + compatible = "fixed-partitions";
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + at91bootstrap@0 {
> + label = "at91bs";
> + reg = <0x0 0x20000>;
> + };
> +
> + uboot@...00 {
> + label = "u-boot";
> + reg = <0x20000 0x80000>;
> + };
> +
> + ubootenv@...00 {
> + label = "u-boot-env";
> + reg = <0xa0000 0x20000>;
> + };
> +
> + ubootenv@...00 {
> + label = "redund-env";
> + reg = <0xc0000 0x20000>;
> + };
> +
> + kernel-a@...00 {
> + label = "kernel-a";
> + reg = <0xe0000 0x280000>;
> + };
> +
> + kernel-b@...000 {
> + label = "kernel-b";
> + reg = <0x360000 0x280000>;
> + };
> +
> + rootfs-a@...000 {
> + label = "rootfs-a";
> + reg = <0x5e0000 0x2600000>;
> + };
> +
> + rootfs-b@...0000 {
> + label = "rootfs-b";
> + reg = <0x2be0000 0x2600000>;
> + };
> +
> + user@...0000 {
> + label = "user";
> + reg = <0x51e0000 0x2dc0000>;
> + };
> +
> + logs@...0000 {
> + label = "logs";
> + reg = <0x7fa0000 0x60000>;
> + };
> +
> + };
> + };
> + };
> +};
> +
> +&usb0 {
This must be &usb1 label, isn't it?
Because you are referring to ohci binding I suspect (found by having a
look at: atmel,oc-gpio property...).
> + num-ports = <2>;
> + atmel,vbus-gpio = <
> + &pioB 12 GPIO_ACTIVE_HIGH
> + &pioA 31 GPIO_ACTIVE_HIGH
> + >;
> + atmel,oc-gpio = <&pioB 13 GPIO_ACTIVE_LOW>;
> +};
> +
> +&macb0 {
> + phy-mode = "rmii";
> +};
> +
> +&spi0 {
> + cs-gpios = <&pioA 14 0>, <&pioA 7 0>, <0>, <0>;
> +};
> +
> +&usb2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_board_usb2>;
> + atmel,vbus-gpio = <&pioB 11 GPIO_ACTIVE_HIGH>;
> +};
> +
> +&mmc0 {
> + pinctrl-0 = <
> + &pinctrl_mmc0_slot0_clk_cmd_dat0
> + &pinctrl_mmc0_slot0_dat1_3>;
> + slot@0 {
> + reg = <0>;
> + bus-width = <4>;
> + };
> +};
>
--
Nicolas Ferre
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