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SubjectRe: [PATCH 4/5] ARM: dts: at91: at91-sama5d27_som1: add sama5d27 SoM1 support
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Hi Ludovic,

On 29.06.2017 17:58, Ludovic Desroches wrote:
> On Thu, Jun 29, 2017 at 02:44:33PM +0300, Claudiu Beznea wrote:
>> Add specific DTS file and bindings for sama5d27 SoM1 board.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
>> Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
>> ---
>> arch/arm/boot/dts/at91-sama5d27_som1.dtsi | 178 ++++++++++++++++++++++++++++++
>> 1 file changed, 178 insertions(+)
>> create mode 100644 arch/arm/boot/dts/at91-sama5d27_som1.dtsi
>>
>> diff --git a/arch/arm/boot/dts/at91-sama5d27_som1.dtsi b/arch/arm/boot/dts/at91-sama5d27_som1.dtsi
>> new file mode 100644
>> index 0000000..b3af4d4
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/at91-sama5d27_som1.dtsi
>> @@ -0,0 +1,178 @@
>> +/*
>> + * at91-sama5d27_som1.dtsi - Device Tree file for SAMA5D27 SoM1 board
>> + *
>> + * Copyright (c) 2017, Microchip Technology Inc.
>> + * 2017 Cristian Birsan <cristian.birsan@microchip.com>
>> + * 2017 Claudiu Beznea <claudiu.beznea@microchip.com>
>> + *
>> + * 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 file 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 file 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.
>> + */
>> +#include "sama5d2.dtsi"
>> +#include "sama5d2-pinfunc.h"
>> +
>> +/ {
>> + model = "Atmel SAMA5D27 SoM1";
>> + compatible = "atmel,sama5d27-som1", "atmel,sama5d27", "atmel,sama5d2", "atmel,sama5";
>> +
>> + clocks {
>> + slow_xtal {
>> + clock-frequency = <32768>;
>> + };
>> +
>> + main_xtal {
>> + clock-frequency = <24000000>;
>> + };
>> + };
>> +
>> + ahb {
>> + apb {
>> + qspi1: spi@f0024000 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_qspi1_default>;
>> + flash@0 {
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + compatible = "jedec,spi-nor";
>> + reg = <0>;
>> + spi-max-frequency = <83000000>;
>> + m25p,fast-read;
>> +
>> + at91bootstrap@00000000 {
>> + label = "at91bootstrap";
>> + reg = <0x00000000 0x00010000>;
>> + };
>> +
>> + bootloaderenv@00010000 {
>> + label = "bootloader env";
>> + reg = <0x00010000 0x00010000>;
>> + };
>> +
>> + bootloader@00020000 {
>> + label = "bootloader";
>> + reg = <0x00020000 0x00050000>;
>> + };
>> +
>> + dtb@00070000 {
>> + label = "device tree";
>> + reg = <0x00070000 0x00010000>;
>> + };
>> +
>> + kernel@00080000 {
>> + label = "kernel";
>> + reg = <0x00080000 0x00380000>;
>> + };
>
> I am wondering if it's a good idea to give the flash map here. If we
> take a kernel generated by a sama5_defconfig, it is about 3.8 MB.
The flash size here is 8MB. With kernel image of 3.8M, bootloader of 18KB,
u-boot of 2.2MB, dtb of 31K it will still fit.
>
>> + };
>> + };
>> +
>> + macb0: ethernet@f8008000 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_macb0_default>;
>> + phy-mode = "rmii";
>> +
>> + ethernet-phy@1 {
>> + reg = <0x1>;
>> + interrupt-parent = <&pioA>;
>> + interrupts = <73 IRQ_TYPE_LEVEL_LOW>;
>
> Are you sure about this value? pinctrl tells PD31 so 127. By the way, it
> is better to use macros: PIN_PD31.
Yes, here is a mistake. It has to be PIN_PD31. I will fix it in v2.

Thank you,
Claudiu
>
> Regards
>
> Ludovic
>
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_macb0_phy_irq>;
>> + };
>> + };
>> +
>> + i2c0: i2c@f8028000 {
>> + dmas = <0>, <0>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_i2c0_default>;
>> + i2c-sda-hold-time-ns = <350>;
>> + status = "disabled";
>> +
>> + 24aa@50 {
>> + compatible = "24mac602";
>> + reg = <0x50>;
>> + pagesize = <8>;
>> + start-offset = /bits/ 8 <0xf8>;
>> + read-only;
>> + };
>> + };
>> +
>> + pinctrl@fc038000 {
>> +
>> + pinctrl_i2c0_default: i2c0_default {
>> + pinmux = <PIN_PD21__TWD0>,
>> + <PIN_PD22__TWCK0>;
>> + bias-disable;
>> + };
>> +
>> + pinctrl_macb0_default: macb0_default {
>> + pinmux = <PIN_PD9__GTXCK>,
>> + <PIN_PD10__GTXEN>,
>> + <PIN_PD11__GRXDV>,
>> + <PIN_PD12__GRXER>,
>> + <PIN_PD13__GRX0>,
>> + <PIN_PD14__GRX1>,
>> + <PIN_PD15__GTX0>,
>> + <PIN_PD16__GTX1>,
>> + <PIN_PD17__GMDC>,
>> + <PIN_PD18__GMDIO>;
>> + bias-disable;
>> + };
>> +
>> + pinctrl_macb0_phy_irq: macb0_phy_irq {
>> + pinmux = <PIN_PD31__GPIO>;
>> + bias-disable;
>> + };
>> +
>> + pinctrl_qspi1_default: qspi1_default {
>> + sck_cs {
>> + pinmux = <PIN_PB5__QSPI1_SCK>,
>> + <PIN_PB6__QSPI1_CS>;
>> + bias-disable;
>> + };
>> +
>> + data {
>> + pinmux = <PIN_PB7__QSPI1_IO0>,
>> + <PIN_PB8__QSPI1_IO1>,
>> + <PIN_PB9__QSPI1_IO2>,
>> + <PIN_PB10__QSPI1_IO3>;
>> + bias-pull-up;
>> + };
>> + };
>> + };
>> + };
>> + };
>> +};
>> --
>> 2.7.4
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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