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Message-ID: <20160518232925.GA6545@rob-hp-laptop>
Date: Wed, 18 May 2016 18:29:25 -0500
From: Rob Herring <robh@...nel.org>
To: Raashid Muhammed <raashidmuhammed@...ogic.com>
Cc: pawel.moll@....com, mark.rutland@....com,
ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
linux@...linux.org.uk, vijaykumar@...vegnu.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: at91: Add DT support for Olimex SAM9-L9260 board.
On Wed, May 18, 2016 at 06:02:46PM +0530, Raashid Muhammed wrote:
> From: Raashid Muhammed <raashidmuhammed@...ogic.com>
>
> sam9-l9260 is a low cost board designed by Olimex.
>
> More infomation is available at:
> https://www.olimex.com/Products/ARM/Atmel/SAM9-L9260/
>
> Signed-off-by: Raashid Muhammed <raashidmuhammed@...ogic.com>
> Reviewed-by: Vijay Kumar B. <vijaykumar@...vegnu.org>
> ---
> .../devicetree/bindings/arm/olimex-at91.txt | 6 ++
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/sam9-l9260.dts | 108 +++++++++++++++++++++
> 3 files changed, 115 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/olimex-at91.txt
> create mode 100644 arch/arm/boot/dts/sam9-l9260.dts
>
> diff --git a/Documentation/devicetree/bindings/arm/olimex-at91.txt b/Documentation/devicetree/bindings/arm/olimex-at91.txt
> new file mode 100644
> index 0000000..0587d63
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/olimex-at91.txt
> @@ -0,0 +1,6 @@
> +Olimex AT91 Device Tree Bindings
> +--------------------------------
There's not an existing at91 or olimex file this would fit into? We
don't need 1 file per board.
> +
> +SAM9-L9260 Board
> +Required root node properties:
> + - compatible = "olimex,sam9-l9260", "atmel,at91sam9260";
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 95c1923..ae3b50f 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -19,6 +19,7 @@ dtb-$(CONFIG_SOC_SAM_V4_V5) += \
> usb_a9260.dtb \
> at91sam9261ek.dtb \
> at91sam9263ek.dtb \
> + sam9-l9260.dtb \
> tny_a9263.dtb \
> usb_a9263.dtb \
> at91-foxg20.dtb \
> diff --git a/arch/arm/boot/dts/sam9-l9260.dts b/arch/arm/boot/dts/sam9-l9260.dts
> new file mode 100644
> index 0000000..3ddf7af
> --- /dev/null
> +++ b/arch/arm/boot/dts/sam9-l9260.dts
> @@ -0,0 +1,108 @@
> +/*
> + * sam9-l9260.dts - Device Tree file for Olimex SAM9-L9260 board
> + *
> + * Copyright (C) 2016 Raashid Muhammed <raashidmuhammed@...ogic.com>
> + *
> + * Licensed under GPLv2 or later.
> + */
> +/dts-v1/;
> +#include "at91sam9260.dtsi"
> +
> +/ {
> + model = "Olimex sam9-l9260";
> + compatible = "olimex,sam9-l9260", "atmel,at91sam9260", "atmel,at91sam9";
> +
> + chosen {
> + bootargs = "mem=64M console=ttyS0,115200 root=/dev/mtdblock5 rw rootfstype=ubifs";
use stdout-path instead of console on the command line. Actually, you
should then drop the rest of the bootargs. They are all user specific.
> + };
> +
> + memory {
> + reg = <0x20000000 0x4000000>;
> + };
> +
> + clocks {
> + slow_xtal {
> + clock-frequency = <32768>;
> + };
> +
> + main_xtal {
> + clock-frequency = <18432000>;
> + };
> + };
> +
> + ahb {
> + apb {
> + dbgu: serial@...ff200 {
> + status = "okay";
> + };
> +
> + macb0: ethernet@...c4000 {
> + phy-mode = "mii";
> + status = "okay";
> + };
> +
> + spi0: spi@...c8000 {
> + status = "okay";
> + cs-gpios = <&pioC 11 0>, <0>, <0>, <0>;
> + mtd_dataflash@0 {
> + compatible = "atmel,at45", "atmel,dataflash";
> + spi-max-frequency = <15000000>;
> + reg = <0>;
> + };
> + };
> +
> + mmc0: mmc@...a8000 {
> + pinctrl-0 = <
> + &pinctrl_board_mmc0
> + &pinctrl_mmc0_clk
> + &pinctrl_mmc0_slot1_cmd_dat0
> + &pinctrl_mmc0_slot1_dat1_3>;
> + status = "okay";
> + slot@1 {
> + reg = <1>;
> + bus-width = <4>;
> + cd-gpios = <&pioC 8 GPIO_ACTIVE_HIGH>;
> + wp-gpios = <&pioC 4 GPIO_ACTIVE_HIGH>;
> + };
> + };
> +
> + pinctrl@...ff400 {
> + mmc0 {
> + pinctrl_board_mmc0: mmc0-board {
> + atmel,pins =
> + <AT91_PIOC 8 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH /* PC08 gpio CD pin pull up and deglitch */
> + AT91_PIOC 4 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP>; /* PC04 gpio WP pin pull up */
> + };
> + };
> + };
> +
> +
> + };
> +
> + usb0: ohci@...00000 {
Drop the leading 0. You'll need to fixup the base dts.
> + status = "okay";
> + };
> +
> + nand0: nand@...00000 {
> + nand-bus-width = <8>;
> + nand-ecc-mode = "soft";
> + nand-on-flash-bbt = <1>;
> + status = "okay";
> + };
> + };
> +
> + i2c@0 {
> + status = "okay";
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> +
> + b0 {
> + label = "b0";
> + gpios = <&pioA 6 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "heartbeat";
> + };
> +
> + };
> +};
> --
> 2.1.4
>
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