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linux-next/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts
Fabio Estevam 2bfdd113d0 ARM: dts: imx: Fix the SPI chipselect polarity 
The conversion of the spi-imx driver to use GPIO descriptors
in commit 8cdcd8aeee ("spi: imx/fsl-lpspi: Convert to GPIO descriptors")
helped to detect the following SPI chipselect polarity mismatch on an
imx6q-sabresd:

[    4.854337] m25p80@0 enforce active low on chipselect handle

Prior to the above commit, the chipselect polarity passed via cs-gpios
property was ignored and considered active-low.

The reason for such mismatch is clearly explained in the comments inside
drivers/gpio/gpiolib-of.c:

 * SPI children have active low chip selects
 * by default. This can be specified negatively
 * by just omitting "spi-cs-high" in the
 * device node, or actively by tagging on
 * GPIO_ACTIVE_LOW as flag in the device
 * tree. If the line is simultaneously
 * tagged as active low in the device tree
 * and has the "spi-cs-high" set, we get a
 * conflict and the "spi-cs-high" flag will
 * take precedence.

To properly represent the SPI chipselect polarity, change it to active-low
when the "spi-cs-high" property is absent.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-08-30 09:37:20 +08:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2013 Data Modul AG
*/
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include "imx6q.dtsi"
/ {
model = "Data Modul eDM-QMX6 Board";
compatible = "dmo,imx6q-edmqmx6", "fsl,imx6q";
chosen {
stdout-path = &uart2;
};
aliases {
gpio7 = &stmpe_gpio1;
gpio8 = &stmpe_gpio2;
stmpe-i2c0 = &stmpe1;
stmpe-i2c1 = &stmpe2;
};
memory@10000000 {
device_type = "memory";
reg = <0x10000000 0x80000000>;
};
regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;
reg_3p3v: regulator@0 {
compatible = "regulator-fixed";
reg = <0>;
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_usb_otg_switch: regulator@1 {
compatible = "regulator-fixed";
reg = <1>;
regulator-name = "usb_otg_switch";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio7 12 0>;
regulator-boot-on;
regulator-always-on;
};
reg_usb_host1: regulator@2 {
compatible = "regulator-fixed";
reg = <2>;
regulator-name = "usb_host1_en";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio3 31 0>;
enable-active-high;
};
};
gpio-leds {
compatible = "gpio-leds";
led-blue {
label = "blue";
gpios = <&stmpe_gpio1 8 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
};
led-green {
label = "green";
gpios = <&stmpe_gpio1 9 GPIO_ACTIVE_HIGH>;
};
led-pink {
label = "pink";
gpios = <&stmpe_gpio1 10 GPIO_ACTIVE_HIGH>;
};
led-red {
label = "red";
gpios = <&stmpe_gpio1 11 GPIO_ACTIVE_HIGH>;
};
};
};
&can1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_can1>;
status = "okay";
};
&ecspi5 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi5>;
cs-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
status = "okay";
flash: m25p80@0 {
compatible = "m25p80", "jedec,spi-nor";
spi-max-frequency = <40000000>;
reg = <0>;
};
};
&fec {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet>;
phy-mode = "rgmii";
phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>;
phy-supply = <&vgen2_1v2_eth>;
status = "okay";
};
&i2c1 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";
};
&i2c2 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2
&pinctrl_stmpe1
&pinctrl_stmpe2
&pinctrl_pfuze>;
status = "okay";
pmic: pfuze100@8 {
compatible = "fsl,pfuze100";
reg = <0x08>;
interrupt-parent = <&gpio3>;
interrupts = <20 8>;
regulators {
sw1a_reg: sw1ab {
regulator-min-microvolt = <300000>;
regulator-max-microvolt = <1875000>;
regulator-boot-on;
regulator-always-on;
};
sw1c_reg: sw1c {
regulator-min-microvolt = <300000>;
regulator-max-microvolt = <1875000>;
regulator-boot-on;
regulator-always-on;
};
sw2_reg: sw2 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
sw3a_reg: sw3a {
regulator-min-microvolt = <400000>;
regulator-max-microvolt = <1975000>;
regulator-boot-on;
regulator-always-on;
};
sw3b_reg: sw3b {
regulator-min-microvolt = <400000>;
regulator-max-microvolt = <1975000>;
regulator-boot-on;
regulator-always-on;
};
sw4_reg: sw4 {
regulator-min-microvolt = <400000>;
regulator-max-microvolt = <1975000>;
regulator-always-on;
};
swbst_reg: swbst {
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5150000>;
regulator-always-on;
};
snvs_reg: vsnvs {
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <3000000>;
regulator-boot-on;
regulator-always-on;
};
vref_reg: vrefddr {
regulator-boot-on;
regulator-always-on;
};
vgen1_reg: vgen1 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1550000>;
};
vgen2_1v2_eth: vgen2 {
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1550000>;
};
vdd_high_in: vgen3 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
vgen4_reg: vgen4 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
vgen5_reg: vgen5 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
vgen6_reg: vgen6 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
};
};
stmpe1: stmpe1601@40 {
compatible = "st,stmpe1601";
reg = <0x40>;
interrupts = <30 0>;
interrupt-parent = <&gpio3>;
vcc-supply = <&sw2_reg>;
vio-supply = <&sw2_reg>;
stmpe_gpio1: stmpe_gpio {
#gpio-cells = <2>;
compatible = "st,stmpe-gpio";
};
};
stmpe2: stmpe1601@44 {
compatible = "st,stmpe1601";
reg = <0x44>;
interrupts = <2 0>;
interrupt-parent = <&gpio5>;
vcc-supply = <&sw2_reg>;
vio-supply = <&sw2_reg>;
stmpe_gpio2: stmpe_gpio {
#gpio-cells = <2>;
compatible = "st,stmpe-gpio";
};
};
temp1: ad7414@4c {
compatible = "ad,ad7414";
reg = <0x4c>;
};
temp2: ad7414@4d {
compatible = "ad,ad7414";
reg = <0x4d>;
};
rtc: m41t62@68 {
compatible = "st,m41t62";
reg = <0x68>;
};
};
&i2c3 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c3>;
status = "okay";
};
&iomuxc {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_hog>;
imx6q-dmo-edmqmx6 {
pinctrl_hog: hoggrp {
fsl,pins = <
MX6QDL_PAD_EIM_A16__GPIO2_IO22 0x80000000
MX6QDL_PAD_EIM_A17__GPIO2_IO21 0x80000000
>;
};
pinctrl_can1: can1grp {
fsl,pins = <
MX6QDL_PAD_KEY_ROW2__FLEXCAN1_RX 0x1b0b0
MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
>;
};
pinctrl_ecspi5: ecspi5rp-1 {
fsl,pins = <
MX6QDL_PAD_SD1_DAT0__ECSPI5_MISO 0x80000000
MX6QDL_PAD_SD1_CMD__ECSPI5_MOSI 0x80000000
MX6QDL_PAD_SD1_CLK__ECSPI5_SCLK 0x80000000
MX6QDL_PAD_SD2_DAT3__GPIO1_IO12 0x80000000
>;
};
pinctrl_enet: enetgrp {
fsl,pins = <
MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b030
MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x1b030
MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x1b030
MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b030
MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b030
MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b030
MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x1b030
MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b030
MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b030
MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b030
MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b030
MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b030
MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x1b0b0
MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0
MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0
MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25 0x1b0b0
MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x4001b0a8
>;
};
pinctrl_i2c1: i2c1grp {
fsl,pins = <
MX6QDL_PAD_EIM_D21__I2C1_SCL 0x4001b8b1
MX6QDL_PAD_EIM_D28__I2C1_SDA 0x4001b8b1
>;
};
pinctrl_i2c2: i2c2grp {
fsl,pins = <
MX6QDL_PAD_EIM_EB2__I2C2_SCL 0x4001b8b1
MX6QDL_PAD_KEY_ROW3__I2C2_SDA 0x4001b8b1
>;
};
pinctrl_i2c3: i2c3grp {
fsl,pins = <
MX6QDL_PAD_EIM_D17__I2C3_SCL 0x4001b8b1
MX6QDL_PAD_GPIO_6__I2C3_SDA 0x4001b8b1
>;
};
pinctrl_pcie: pciegrp {
fsl,pins = <
MX6QDL_PAD_KEY_COL1__GPIO4_IO08 0x100b1
>;
};
pinctrl_pfuze: pfuze100grp1 {
fsl,pins = <
MX6QDL_PAD_EIM_D20__GPIO3_IO20 0x80000000
>;
};
pinctrl_stmpe1: stmpe1grp {
fsl,pins = <MX6QDL_PAD_EIM_D30__GPIO3_IO30 0x80000000>;
};
pinctrl_stmpe2: stmpe2grp {
fsl,pins = <MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x80000000>;
};
pinctrl_uart1: uart1grp {
fsl,pins = <
MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA 0x1b0b1
MX6QDL_PAD_SD3_DAT6__UART1_RX_DATA 0x1b0b1
>;
};
pinctrl_uart2: uart2grp {
fsl,pins = <
MX6QDL_PAD_EIM_D26__UART2_TX_DATA 0x1b0b1
MX6QDL_PAD_EIM_D27__UART2_RX_DATA 0x1b0b1
>;
};
pinctrl_usbotg: usbotggrp {
fsl,pins = <
MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID 0x17059
>;
};
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <
MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
MX6QDL_PAD_SD3_CLK__SD3_CLK 0x10059
MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x17059
MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x17059
MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x17059
MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x17059
>;
};
pinctrl_usdhc4: usdhc4grp {
fsl,pins = <
MX6QDL_PAD_SD4_CMD__SD4_CMD 0x17059
MX6QDL_PAD_SD4_CLK__SD4_CLK 0x10059
MX6QDL_PAD_SD4_DAT0__SD4_DATA0 0x17059
MX6QDL_PAD_SD4_DAT1__SD4_DATA1 0x17059
MX6QDL_PAD_SD4_DAT2__SD4_DATA2 0x17059
MX6QDL_PAD_SD4_DAT3__SD4_DATA3 0x17059
MX6QDL_PAD_SD4_DAT4__SD4_DATA4 0x17059
MX6QDL_PAD_SD4_DAT5__SD4_DATA5 0x17059
MX6QDL_PAD_SD4_DAT6__SD4_DATA6 0x17059
MX6QDL_PAD_SD4_DAT7__SD4_DATA7 0x17059
>;
};
};
};
&pcie {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pcie>;
reset-gpio = <&gpio4 8 GPIO_ACTIVE_LOW>;
status = "okay";
};
&sata {
status = "okay";
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1>;
status = "okay";
};
&uart2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart2>;
status = "okay";
};
&usbh1 {
vbus-supply = <&reg_usb_host1>;
disable-over-current;
dr_mode = "host";
status = "okay";
};
&usbotg {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usbotg>;
disable-over-current;
status = "okay";
};
&usdhc3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc3>;
vmmc-supply = <&reg_3p3v>;
status = "okay";
};
&usdhc4 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc4>;
vmmc-supply = <&reg_3p3v>;
non-removable;
bus-width = <8>;
status = "okay";
};
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