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u-boot-megous/arch/arm/dts/at91-sama7g5ek.dts
Tudor Ambarus 1b0eec3c9f ARM: dts: at91: sama7g5ek: Align the impedance of the QSPI0's HSIO and PCB lines 
The impedance of the QSPI PCB lines on the sama7g5ek is 50 Ohms.
Align the output impedance of the QSPI0 HSIOs by setting a medium drive
strength which corresponds to an impedance of 56 Ohms when VDD is in the
3.0V - 3.6V range. The high drive strength setting corresponds to an
output impedance of 42 Ohms on the QSPI0 HSIOs.
This is just a fine tunning. The memory that we have populated on sama7g5ek
works fine even with high drive strength, but it's better to adjust it and
use medium instead, in case some other flashes with higher frequencies are
tested.

Suggested-by: Mihai Sain <mihai.sain@microchip.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2022-04-26 09:54:41 +03:00

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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* at91-sama7g5ek.dts - Device Tree file for SAMA7G5-EK board
*
* Copyright (c) 2020 Microchip Technology Inc. and its subsidiaries
*
* Author: Eugen Hristev <eugen.hristev@microchip.com>
* Author: Claudiu Beznea <claudiu.beznea@microchip.com>
*
*/
/dts-v1/;
#include "sama7g5-pinfunc.h"
#include "sama7g5.dtsi"
#include <dt-bindings/mfd/atmel-flexcom.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/at91.h>
/ {
model = "Microchip SAMA7G5-EK";
compatible = "microchip,sama7g5ek", "microchip,sama7g5", "microchip,sama7";
chosen {
bootargs = "rw root=/dev/mmcblk1p2 rootfstype=ext4 rootwait";
stdout-path = "serial0:115200n8";
};
aliases {
serial0 = &uart3;
serial1 = &uart4;
serial2 = &uart7;
serial3 = &uart0;
i2c0 = &i2c1;
i2c1 = &i2c8;
i2c2 = &i2c9;
};
clocks {
slow_xtal {
clock-frequency = <32768>;
};
main_xtal {
clock-frequency = <24000000>;
};
};
gpio_keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_key_gpio_default>;
bp1 {
label = "PB_USER";
gpios = <&pioA PIN_PA12 GPIO_ACTIVE_LOW>;
linux,code = <KEY_PROG1>;
wakeup-source;
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_led_gpio_default>;
status = "okay"; /* Conflict with pwm. */
red_led {
label = "red";
gpios = <&pioA PIN_PB8 GPIO_ACTIVE_HIGH>;
};
green_led {
label = "green";
gpios = <&pioA PIN_PA13 GPIO_ACTIVE_HIGH>;
};
blue_led {
label = "blue";
gpios = <&pioA PIN_PD20 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
};
};
/* 512 M */
memory@60000000 {
device_type = "memory";
reg = <0x60000000 0x20000000>;
};
sound: sound {
compatible = "simple-audio-card";
simple-audio-card,name = "sama7g5ek audio";
#address-cells = <1>;
#size-cells = <0>;
simple-audio-card,dai-link@0 {
reg = <0>;
cpu {
sound-dai = <&spdiftx>;
};
codec {
sound-dai = <&spdif_out>;
};
};
simple-audio-card,dai-link@1 {
reg = <1>;
cpu {
sound-dai = <&spdifrx>;
};
codec {
sound-dai = <&spdif_in>;
};
};
};
spdif_in: spdif-in {
#sound-dai-cells = <0>;
compatible = "linux,spdif-dir";
};
spdif_out: spdif-out {
#sound-dai-cells = <0>;
compatible = "linux,spdif-dit";
};
};
&adc {
vddana-supply = <&vddout25>;
vref-supply = <&vddout25>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mikrobus1_an_default &pinctrl_mikrobus2_an_default>;
status = "okay";
};
&can0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_can0_default>;
status = "okay";
};
&can1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_can1_default>;
status = "okay";
};
&cpu0 {
cpu-supply = <&vddcpu>;
};
&qspi0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_qspi>;
status = "okay";
flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <133000000>;
spi-tx-bus-width = <8>;
spi-rx-bus-width = <8>;
m25p,fast-read;
at91bootstrap@0 {
label = "ospi: at91bootstrap";
reg = <0x0 0x40000>;
};
bootloader@40000 {
label = "ospi: bootloader";
reg = <0x40000 0xc0000>;
};
bootloaderenvred@100000 {
label = "ospi: bootloader env redundant";
reg = <0x100000 0x40000>;
};
bootloaderenv@140000 {
label = "ospi: bootloader env";
reg = <0x140000 0x40000>;
};
dtb@180000 {
label = "ospi: device tree";
reg = <0x180000 0x80000>;
};
kernel@200000 {
label = "ospi: kernel";
reg = <0x200000 0x600000>;
};
rootfs@800000 {
label = "ospi: rootfs";
reg = <0x800000 0x7800000>;
};
};
};
&dma0 {
status = "okay";
};
&dma1 {
status = "okay";
};
&dma2 {
status = "okay";
};
&flx0 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
status = "disabled";
uart0: serial@200 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flx0_default>;
status = "disabled";
};
};
&flx1 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
status = "okay";
i2c1: i2c@600 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1_default>;
i2c-analog-filter;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
status = "okay";
mcp16502@5b {
compatible = "microchip,mcp16502";
reg = <0x5b>;
status = "okay";
regulators {
vdd_3v3: VDD_IO {
regulator-name = "VDD_IO";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <3700000>;
regulator-initial-mode = <2>;
regulator-allowed-modes = <2>, <4>;
regulator-always-on;
regulator-state-standby {
regulator-on-in-suspend;
regulator-suspend-microvolt = <3300000>;
regulator-mode = <4>;
};
regulator-state-mem {
regulator-off-in-suspend;
regulator-mode = <4>;
};
};
vddioddr: VDD_DDR {
regulator-name = "VDD_DDR";
regulator-min-microvolt = <1300000>;
regulator-max-microvolt = <1450000>;
regulator-initial-mode = <2>;
regulator-allowed-modes = <2>, <4>;
regulator-always-on;
regulator-state-standby {
regulator-on-in-suspend;
regulator-suspend-microvolt = <1350000>;
regulator-mode = <4>;
};
regulator-state-mem {
regulator-on-in-suspend;
regulator-suspend-microvolt = <1350000>;
regulator-mode = <4>;
};
};
vddcore: VDD_CORE {
regulator-name = "VDD_CORE";
regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1850000>;
regulator-initial-mode = <2>;
regulator-allowed-modes = <2>, <4>;
regulator-always-on;
regulator-state-standby {
regulator-on-in-suspend;
regulator-suspend-voltage = <1150000>;
regulator-mode = <4>;
};
regulator-state-mem {
regulator-off-in-suspend;
regulator-mode = <4>;
};
};
vddcpu: VDD_OTHER {
regulator-name = "VDD_OTHER";
regulator-min-microvolt = <1050000>;
regulator-max-microvolt = <1850000>;
regulator-initial-mode = <2>;
regulator-allowed-modes = <2>, <4>;
regulator-ramp-delay = <3125>;
regulator-always-on;
regulator-state-standby {
regulator-on-in-suspend;
regulator-suspend-voltage = <1050000>;
regulator-mode = <4>;
};
regulator-state-mem {
regulator-off-in-suspend;
regulator-mode = <4>;
};
};
vldo1: LDO1 {
regulator-name = "LDO1";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <3700000>;
regulator-always-on;
regulator-state-standby {
regulator-suspend-voltage = <1800000>;
regulator-on-in-suspend;
};
regulator-state-mem {
regulator-off-in-suspend;
};
};
vldo2: LDO2 {
regulator-name = "LDO2";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <3700000>;
regulator-state-standby {
regulator-suspend-voltage = <1800000>;
regulator-on-in-suspend;
};
regulator-state-mem {
regulator-off-in-suspend;
};
};
};
};
};
};
&flx3 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
status = "okay";
uart3: serial@200 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flx3_default>;
status = "okay";
};
};
&flx4 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
status = "okay";
uart4: serial@200 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flx4_default>;
status = "okay";
};
};
&flx7 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
status = "okay";
uart7: serial@200 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flx7_default>;
status = "okay";
};
};
&flx8 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
status = "okay";
i2c8: i2c@600 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c8_default>;
i2c-analog-filter;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
status = "okay";
eeprom@52 {
compatible = "microchip,24aa02e48";
reg = <0x52>;
pagesize = <16>;
};
eeprom@53 {
compatible = "microchip,24aa02e48";
reg = <0x53>;
pagesize = <16>;
};
};
};
&flx9 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
status = "okay";
i2c9: i2c@600 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c9_default>;
i2c-analog-filter;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
status = "okay";
};
};
&flx11 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_SPI>;
status = "okay";
spi11: spi@400 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mikrobus1_spi &pinctrl_mikrobus1_spi_cs>;
status = "okay";
};
};
&gmac0 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gmac0_default
&pinctrl_gmac0_mdio_default
&pinctrl_gmac0_txck_default
&pinctrl_gmac0_phy_irq>;
phy-mode = "rgmii-id";
status = "okay";
ethernet-phy@7 {
reg = <0x7>;
interrupt-parent = <&pioA>;
interrupts = <PIN_PA31 IRQ_TYPE_LEVEL_LOW>;
};
};
&gmac1 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gmac1_default
&pinctrl_gmac1_mdio_default
&pinctrl_gmac1_phy_irq>;
phy-mode = "rmii";
status = "okay";
ethernet-phy@0 {
reg = <0x0>;
interrupt-parent = <&pioA>;
interrupts = <PIN_PA21 IRQ_TYPE_LEVEL_LOW>;
};
};
&i2s0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2s0_default>;
};
&pioA {
pinctrl_can0_default: can0_default {
pinmux = <PIN_PD12__CANTX0>,
<PIN_PD13__CANRX0 >;
bias-disable;
};
pinctrl_can1_default: can1_default {
pinmux = <PIN_PD14__CANTX1>,
<PIN_PD15__CANRX1 >;
bias-disable;
};
pinctrl_flx0_default: flx0_default {
pinmux = <PIN_PE3__FLEXCOM0_IO0>,
<PIN_PE4__FLEXCOM0_IO1>,
<PIN_PE6__FLEXCOM0_IO3>,
<PIN_PE7__FLEXCOM0_IO4>;
bias-disable;
};
pinctrl_flx3_default: flx3_default {
pinmux = <PIN_PD16__FLEXCOM3_IO0>,
<PIN_PD17__FLEXCOM3_IO1>;
bias-pull-up;
};
pinctrl_flx4_default: flx4_default {
pinmux = <PIN_PD18__FLEXCOM4_IO0>,
<PIN_PD19__FLEXCOM4_IO1>;
bias-disable;
};
pinctrl_flx7_default: flx7_default {
pinmux = <PIN_PC23__FLEXCOM7_IO0>,
<PIN_PC24__FLEXCOM7_IO1>;
bias-disable;
};
pinctrl_gmac0_default: gmac0_default {
pinmux = <PIN_PA16__G0_TX0>,
<PIN_PA17__G0_TX1>,
<PIN_PA26__G0_TX2>,
<PIN_PA27__G0_TX3>,
<PIN_PA19__G0_RX0>,
<PIN_PA20__G0_RX1>,
<PIN_PA28__G0_RX2>,
<PIN_PA29__G0_RX3>,
<PIN_PA15__G0_TXEN>,
<PIN_PA30__G0_RXCK>,
<PIN_PA18__G0_RXDV>,
<PIN_PA25__G0_125CK>;
slew-rate = <0>;
bias-disable;
};
pinctrl_gmac0_mdio_default: gmac0_mdio_default {
pinmux = <PIN_PA22__G0_MDC>,
<PIN_PA23__G0_MDIO>;
bias-disable;
};
pinctrl_gmac0_txck_default: gmac0_txck_default {
pinmux = <PIN_PA24__G0_TXCK>;
slew-rate = <0>;
bias-pull-up;
};
pinctrl_gmac0_phy_irq: gmac0_phy_irq {
pinmux = <PIN_PA31__GPIO>;
bias-disable;
};
pinctrl_gmac1_default: gmac1_default {
pinmux = <PIN_PD30__G1_TXCK>,
<PIN_PD22__G1_TX0>,
<PIN_PD23__G1_TX1>,
<PIN_PD21__G1_TXEN>,
<PIN_PD25__G1_RX0>,
<PIN_PD26__G1_RX1>,
<PIN_PD27__G1_RXER>,
<PIN_PD24__G1_RXDV>;
slew-rate = <0>;
bias-disable;
};
pinctrl_gmac1_mdio_default: gmac1_mdio_default {
pinmux = <PIN_PD28__G1_MDC>,
<PIN_PD29__G1_MDIO>;
bias-disable;
};
pinctrl_gmac1_phy_irq: gmac1_phy_irq {
pinmux = <PIN_PA21__GPIO>;
bias-disable;
};
pinctrl_i2c1_default: i2c1_default {
pinmux = <PIN_PC9__FLEXCOM1_IO0>,
<PIN_PC10__FLEXCOM1_IO1>;
bias-disable;
};
pinctrl_i2c8_default: i2c8_default {
pinmux = <PIN_PC14__FLEXCOM8_IO0>,
<PIN_PC13__FLEXCOM8_IO1>;
bias-disable;
};
pinctrl_i2c9_default: i2c9_default {
pinmux = <PIN_PC18__FLEXCOM9_IO0>,
<PIN_PC19__FLEXCOM9_IO1>;
bias-disable;
};
pinctrl_i2s0_default: i2s0_default {
pinmux = <PIN_PB23__I2SMCC0_CK>,
<PIN_PB24__I2SMCC0_WS>,
<PIN_PB25__I2SMCC0_DOUT1>,
<PIN_PB26__I2SMCC0_DOUT0>,
<PIN_PB27__I2SMCC0_MCK>;
bias-disable;
};
pinctrl_key_gpio_default: key_gpio_default {
pinmux = <PIN_PA12__GPIO>;
bias-pull-up;
};
pinctrl_led_gpio_default: led_gpio_default {
pinmux = <PIN_PA13__GPIO>,
<PIN_PB8__GPIO>,
<PIN_PD20__GPIO>;
bias-pull-up;
};
pinctrl_mikrobus1_an_default: mikrobus1_an_default {
pinmux = <PIN_PD0__GPIO>;
bias-disable;
};
pinctrl_mikrobus2_an_default: mikrobus2_an_default {
pinmux = <PIN_PD1__GPIO>;
bias-disable;
};
pinctrl_mikrobus1_pwm2_default: mikrobus1_pwm2_default {
pinmux = <PIN_PA13__PWMH2>;
bias-disable;
};
pinctrl_mikrobus2_pwm3_default: mikrobus2_pwm3_default {
pinmux = <PIN_PD20__PWMH3>;
bias-disable;
};
pinctrl_mikrobus1_spi_cs: mikrobus1_spi_cs {
pinmux = <PIN_PB6__FLEXCOM11_IO3>;
bias-disable;
};
pinctrl_mikrobus1_spi: mikrobus1_spi {
pinmux = <PIN_PB3__FLEXCOM11_IO0>,
<PIN_PB4__FLEXCOM11_IO1>,
<PIN_PB5__FLEXCOM11_IO2>;
bias-disable;
};
pinctrl_qspi: qspi {
pinmux = <PIN_PB12__QSPI0_IO0>,
<PIN_PB11__QSPI0_IO1>,
<PIN_PB10__QSPI0_IO2>,
<PIN_PB9__QSPI0_IO3>,
<PIN_PB16__QSPI0_IO4>,
<PIN_PB17__QSPI0_IO5>,
<PIN_PB18__QSPI0_IO6>,
<PIN_PB19__QSPI0_IO7>,
<PIN_PB13__QSPI0_CS>,
<PIN_PB14__QSPI0_SCK>,
<PIN_PB15__QSPI0_SCKN>,
<PIN_PB20__QSPI0_DQS>,
<PIN_PB21__QSPI0_INT>;
bias-disable;
slew-rate = <0>;
atmel,drive-strength = <ATMEL_PIO_DRVSTR_ME>;
};
pinctrl_sdmmc0_default: sdmmc0_default {
pinmux = <PIN_PA1__SDMMC0_CMD>,
<PIN_PA3__SDMMC0_DAT0>,
<PIN_PA4__SDMMC0_DAT1>,
<PIN_PA5__SDMMC0_DAT2>,
<PIN_PA6__SDMMC0_DAT3>,
<PIN_PA7__SDMMC0_DAT4>,
<PIN_PA8__SDMMC0_DAT5>,
<PIN_PA9__SDMMC0_DAT6>,
<PIN_PA10__SDMMC0_DAT7>,
<PIN_PA0__SDMMC0_CK>,
<PIN_PA2__SDMMC0_RSTN>,
<PIN_PA14__SDMMC0_CD>,
<PIN_PA11__SDMMC0_DS>;
slew-rate = <0>;
bias-pull-up;
};
pinctrl_sdmmc1_default: sdmmc1_default {
pinmux = <PIN_PB29__SDMMC1_CMD>,
<PIN_PB31__SDMMC1_DAT0>,
<PIN_PC0__SDMMC1_DAT1>,
<PIN_PC1__SDMMC1_DAT2>,
<PIN_PC2__SDMMC1_DAT3>,
<PIN_PB30__SDMMC1_CK>,
<PIN_PB28__SDMMC1_RSTN>,
<PIN_PC5__SDMMC1_1V8SEL>,
<PIN_PC4__SDMMC1_CD>;
slew-rate = <0>;
bias-pull-up;
};
pinctrl_sdmmc2_default: sdmmc2_default {
pinmux = <PIN_PD3__SDMMC2_CMD>,
<PIN_PD5__SDMMC2_DAT0>,
<PIN_PD6__SDMMC2_DAT1>,
<PIN_PD7__SDMMC2_DAT2>,
<PIN_PD8__SDMMC2_DAT3>,
<PIN_PD4__SDMMC2_CK>;
slew-rate = <0>;
bias-pull-up;
};
pinctrl_spdifrx_default: spdifrx_default {
pinmux = <PIN_PB0__SPDIF_RX>;
bias-disable;
};
pinctrl_spdiftx_default: spdiftx_default {
pinmux = <PIN_PB1__SPDIF_TX>;
bias-disable;
};
};
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mikrobus1_pwm2_default &pinctrl_mikrobus2_pwm3_default>;
status = "disabled"; /* Conflict with leds. */
};
&rtt {
atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
};
&sdmmc0 {
bus-width = <8>;
non-removable;
no-1-8-v;
sdhci-caps-mask = <0x0 0x00200000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc0_default>;
status = "okay";
};
&sdmmc1 {
bus-width = <4>;
no-1-8-v;
sdhci-caps-mask = <0x0 0x00200000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc1_default>;
status = "okay";
};
&sdmmc2 {
bus-width = <4>;
no-1-8-v;
sdhci-caps-mask = <0x0 0x00200000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc2_default>;
};
&shdwc {
atmel,shdwc-debouncer = <976>;
status = "okay";
input@0 {
reg = <0>;
};
};
&spdifrx {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_spdifrx_default>;
status = "okay";
};
&spdiftx {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_spdiftx_default>;
status = "okay";
};
&tcb0 {
timer0: timer@0 {
compatible = "atmel,tcb-timer";
reg = <0>;
};
timer1: timer@1 {
compatible = "atmel,tcb-timer";
reg = <1>;
};
};
&trng {
status = "okay";
};
&vddout25 {
vin-supply = <&vdd_3v3>;
status = "okay";
};
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