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linux-next/arch/arm/boot/dts/imx6dl-prtvt7.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 OR MIT
/*
* Copyright (c) 2016 Protonic Holland
*/
/dts-v1/;
#include "imx6dl.dtsi"
#include "imx6qdl-prti6q.dtsi"
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/sound/fsl-imx-audmux.h>
/ {
model = "Protonic VT7";
compatible = "prt,prtvt7", "fsl,imx6dl";
memory@10000000 {
device_type = "memory";
reg = <0x10000000 0x20000000>;
};
backlight_lcd: backlight-lcd {
compatible = "pwm-backlight";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_backlight>;
pwms = <&pwm1 0 500000>;
brightness-levels = <0 20 81 248 1000>;
default-brightness-level = <20>;
num-interpolated-steps = <21>;
power-supply = <&reg_bl_12v0>;
enable-gpios = <&gpio4 28 GPIO_ACTIVE_HIGH>;
};
keys {
compatible = "gpio-keys";
autorepeat;
esc {
label = "GPIO Key ESC";
linux,code = <KEY_ESC>;
gpios = <&gpio_pca 0 GPIO_ACTIVE_LOW>;
};
up {
label = "GPIO Key UP";
linux,code = <KEY_UP>;
gpios = <&gpio_pca 1 GPIO_ACTIVE_LOW>;
};
down {
label = "GPIO Key DOWN";
linux,code = <KEY_DOWN>;
gpios = <&gpio_pca 4 GPIO_ACTIVE_LOW>;
};
enter {
label = "GPIO Key Enter";
linux,code = <KEY_ENTER>;
gpios = <&gpio_pca 3 GPIO_ACTIVE_LOW>;
};
cycle {
label = "GPIO Key CYCLE";
linux,code = <KEY_CYCLEWINDOWS>;
gpios = <&gpio_pca 2 GPIO_ACTIVE_LOW>;
};
f1 {
label = "GPIO Key F1";
linux,code = <KEY_F1>;
gpios = <&gpio_pca 14 GPIO_ACTIVE_LOW>;
};
f2 {
label = "GPIO Key F2";
linux,code = <KEY_F2>;
gpios = <&gpio_pca 13 GPIO_ACTIVE_LOW>;
};
f3 {
label = "GPIO Key F3";
linux,code = <KEY_F3>;
gpios = <&gpio_pca 12 GPIO_ACTIVE_LOW>;
};
f4 {
label = "GPIO Key F4";
linux,code = <KEY_F4>;
gpios = <&gpio_pca 11 GPIO_ACTIVE_LOW>;
};
f5 {
label = "GPIO Key F5";
linux,code = <KEY_F5>;
gpios = <&gpio_pca 10 GPIO_ACTIVE_LOW>;
};
f6 {
label = "GPIO Key F6";
linux,code = <KEY_F6>;
gpios = <&gpio_pca 5 GPIO_ACTIVE_LOW>;
};
f7 {
label = "GPIO Key F7";
linux,code = <KEY_F7>;
gpios = <&gpio_pca 6 GPIO_ACTIVE_LOW>;
};
f8 {
label = "GPIO Key F8";
linux,code = <KEY_F8>;
gpios = <&gpio_pca 7 GPIO_ACTIVE_LOW>;
};
f9 {
label = "GPIO Key F9";
linux,code = <KEY_F9>;
gpios = <&gpio_pca 8 GPIO_ACTIVE_LOW>;
};
f10 {
label = "GPIO Key F10";
linux,code = <KEY_F10>;
gpios = <&gpio_pca 9 GPIO_ACTIVE_LOW>;
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_leds>;
led-debug0 {
function = LED_FUNCTION_STATUS;
gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
};
};
reg_bl_12v0: regulator-bl-12v0 {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_reg_bl_12v0>;
regulator-name = "bl-12v0";
regulator-min-microvolt = <12000000>;
regulator-max-microvolt = <12000000>;
gpio = <&gpio1 7 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_1v8: regulator-1v8 {
compatible = "regulator-fixed";
regulator-name = "1v8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "prti6q-sgtl5000";
simple-audio-card,format = "i2s";
simple-audio-card,widgets =
"Microphone", "Microphone Jack",
"Line", "Line In Jack",
"Headphone", "Headphone Jack",
"Speaker", "External Speaker";
simple-audio-card,routing =
"MIC_IN", "Microphone Jack",
"LINE_IN", "Line In Jack",
"Headphone Jack", "HP_OUT",
"External Speaker", "LINE_OUT";
simple-audio-card,cpu {
sound-dai = <&ssi1>;
system-clock-frequency = <0>;
};
simple-audio-card,codec {
sound-dai = <&sgtl5000>;
bitclock-master;
frame-master;
};
};
};
&audmux {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_audmux>;
status = "okay";
mux-ssi1 {
fsl,audmux-port = <0>;
fsl,port-config = <
IMX_AUDMUX_V2_PTCR_SYN 0
IMX_AUDMUX_V2_PTCR_TFSEL(2) 0
IMX_AUDMUX_V2_PTCR_TCSEL(2) 0
IMX_AUDMUX_V2_PTCR_TFSDIR 0
IMX_AUDMUX_V2_PTCR_TCLKDIR IMX_AUDMUX_V2_PDCR_RXDSEL(2)
>;
};
mux-pins3 {
fsl,audmux-port = <2>;
fsl,port-config = <
IMX_AUDMUX_V2_PTCR_SYN IMX_AUDMUX_V2_PDCR_RXDSEL(0)
0 IMX_AUDMUX_V2_PDCR_TXRXEN
>;
};
};
&can1 {
pinctrl-0 = <&pinctrl_can1 &pinctrl_can1phy>;
};
&clks {
assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>;
assigned-clock-parents = <&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>;
};
&ecspi2 {
cs-gpios = <&gpio2 26 GPIO_ACTIVE_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi2>;
status = "okay";
};
&i2c1 {
sgtl5000: audio-codec@a {
compatible = "fsl,sgtl5000";
reg = <0xa>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_codec>;
#sound-dai-cells = <0>;
clocks = <&clks 201>;
VDDA-supply = <&reg_3v3>;
VDDIO-supply = <&reg_3v3>;
VDDD-supply = <&reg_1v8>;
};
};
&i2c3 {
rtc@51 {
compatible = "nxp,pcf8563";
reg = <0x51>;
};
gpio_pca: gpio@74 {
compatible = "nxp,pca9539";
reg = <0x74>;
interrupts-extended = <&gpio4 5 IRQ_TYPE_LEVEL_LOW>;
#gpio-cells = <2>;
gpio-controller;
};
};
&ipu1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ipu1_csi0>;
status = "okay";
};
&pwm1 {
#pwm-cells = <2>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm1>;
status = "okay";
};
&snvs_poweroff {
status = "okay";
};
&snvs_pwrkey {
status = "okay";
};
&ssi1 {
#sound-dai-cells = <0>;
fsl,mode = "ac97-slave";
status = "okay";
};
&usbh1 {
status = "disabled";
};
&vpu {
status = "disabled";
};
&iomuxc {
pinctrl_audmux: audmuxgrp {
fsl,pins = <
MX6QDL_PAD_CSI0_MCLK__CCM_CLKO1 0x030b0
MX6QDL_PAD_CSI0_DAT7__AUD3_RXD 0x130b0
MX6QDL_PAD_CSI0_DAT4__AUD3_TXC 0x130b0
MX6QDL_PAD_CSI0_DAT5__AUD3_TXD 0x110b0
MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS 0x130b0
>;
};
pinctrl_backlight: backlightgrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT7__GPIO4_IO28 0x1b0b0
>;
};
pinctrl_can1phy: can1phy {
fsl,pins = <
/* CAN1_SR */
MX6QDL_PAD_KEY_COL3__GPIO4_IO12 0x13070
/* CAN1_TERM */
MX6QDL_PAD_GPIO_0__GPIO1_IO00 0x1b0b0
>;
};
pinctrl_codec: codecgrp {
fsl,pins = <
/* AUDIO_nRESET */
MX6QDL_PAD_CSI0_VSYNC__GPIO5_IO21 0x1f0b0
>;
};
pinctrl_ecspi2: ecspi2grp {
fsl,pins = <
MX6QDL_PAD_EIM_OE__ECSPI2_MISO 0x100b1
MX6QDL_PAD_EIM_CS0__ECSPI2_SCLK 0x100b1
MX6QDL_PAD_EIM_CS1__ECSPI2_MOSI 0x100b1
MX6QDL_PAD_EIM_RW__GPIO2_IO26 0x000b1
>;
};
pinctrl_ipu1_csi0: ipu1csi0grp {
fsl,pins = <
MX6QDL_PAD_CSI0_DAT12__IPU1_CSI0_DATA12 0x1b0b0
MX6QDL_PAD_CSI0_DAT13__IPU1_CSI0_DATA13 0x1b0b0
MX6QDL_PAD_CSI0_DAT14__IPU1_CSI0_DATA14 0x1b0b0
MX6QDL_PAD_CSI0_DAT15__IPU1_CSI0_DATA15 0x1b0b0
MX6QDL_PAD_CSI0_DAT16__IPU1_CSI0_DATA16 0x1b0b0
MX6QDL_PAD_CSI0_DAT17__IPU1_CSI0_DATA17 0x1b0b0
MX6QDL_PAD_CSI0_DAT18__IPU1_CSI0_DATA18 0x1b0b0
MX6QDL_PAD_CSI0_DAT19__IPU1_CSI0_DATA19 0x1b0b0
MX6QDL_PAD_CSI0_PIXCLK__IPU1_CSI0_PIXCLK 0x1b0b0
/* ITU656_nRESET */
MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x1b0b0
/* ITU656_nPDN */
MX6QDL_PAD_CSI0_DATA_EN__GPIO5_IO20 0x1b0b0
>;
};
pinctrl_ipu1_disp: ipudisp1grp {
fsl,pins = <
MX6QDL_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK 0xb0
MX6QDL_PAD_DI0_PIN15__IPU1_DI0_PIN15 0xb0
MX6QDL_PAD_DISP0_DAT0__IPU1_DISP0_DATA00 0xb0
MX6QDL_PAD_DISP0_DAT1__IPU1_DISP0_DATA01 0xb0
MX6QDL_PAD_DISP0_DAT2__IPU1_DISP0_DATA02 0xb0
MX6QDL_PAD_DISP0_DAT3__IPU1_DISP0_DATA03 0xb0
MX6QDL_PAD_DISP0_DAT4__IPU1_DISP0_DATA04 0xb0
MX6QDL_PAD_DISP0_DAT5__IPU1_DISP0_DATA05 0xb0
MX6QDL_PAD_DISP0_DAT6__IPU1_DISP0_DATA06 0xb0
MX6QDL_PAD_DISP0_DAT7__IPU1_DISP0_DATA07 0xb0
MX6QDL_PAD_DISP0_DAT8__IPU1_DISP0_DATA08 0xb0
MX6QDL_PAD_DISP0_DAT9__IPU1_DISP0_DATA09 0xb0
MX6QDL_PAD_DISP0_DAT10__IPU1_DISP0_DATA10 0xb0
MX6QDL_PAD_DISP0_DAT11__IPU1_DISP0_DATA11 0xb0
MX6QDL_PAD_DISP0_DAT12__IPU1_DISP0_DATA12 0xb0
MX6QDL_PAD_DISP0_DAT13__IPU1_DISP0_DATA13 0xb0
MX6QDL_PAD_DISP0_DAT14__IPU1_DISP0_DATA14 0xb0
MX6QDL_PAD_DISP0_DAT15__IPU1_DISP0_DATA15 0xb0
MX6QDL_PAD_DISP0_DAT16__IPU1_DISP0_DATA16 0xb0
MX6QDL_PAD_DISP0_DAT17__IPU1_DISP0_DATA17 0xb0
MX6QDL_PAD_DISP0_DAT18__IPU1_DISP0_DATA18 0xb0
MX6QDL_PAD_DISP0_DAT19__IPU1_DISP0_DATA19 0xb0
MX6QDL_PAD_DISP0_DAT20__IPU1_DISP0_DATA20 0xb0
MX6QDL_PAD_DISP0_DAT21__IPU1_DISP0_DATA21 0xb0
MX6QDL_PAD_DISP0_DAT22__IPU1_DISP0_DATA22 0xb0
MX6QDL_PAD_DISP0_DAT23__IPU1_DISP0_DATA23 0xb0
>;
};
pinctrl_leds: ledsgrp {
fsl,pins = <
MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x1b0b0
>;
};
pinctrl_pwm1: pwm1grp {
fsl,pins = <
MX6QDL_PAD_GPIO_9__PWM1_OUT 0x1b0b0
>;
};
pinctrl_reg_bl_12v0: 12blgrp {
fsl,pins = <
MX6QDL_PAD_GPIO_7__GPIO1_IO07 0x1b0b0
>;
};
pinctrl_tsc: tscgrp {
fsl,pins = <
MX6QDL_PAD_EIM_D20__GPIO3_IO20 0x1b0b0
MX6QDL_PAD_EIM_EB2__GPIO2_IO30 0x1b0b0
>;
};
};
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