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spi communication problem
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2024-07-24 05:36 AM - edited 2024-07-24 05:38 AM
Hi again @Erwan SZYMANSKI . Im trying to communicate between my nucleo-G431RB board as master and stm32mp157f-dk2 board as slave. The first problem ı have is that stm32mp157f-dk2.dts file doesn't have the spi configurations and I tried adding them with patching but that caused trouble, can u help me adjusting my dts file
(unmodified file)
// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
/*
* Copyright (C) STMicroelectronics 2022 - All Rights Reserved
* Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
*/
/dts-v1/;
#include "stm32mp157.dtsi"
#include "stm32mp15xf.dtsi"
#include "stm32mp15-pinctrl.dtsi"
#include "stm32mp15xxac-pinctrl.dtsi"
#include "stm32mp15xx-dkx.dtsi"
#include "stm32mp157c-dk2-scmi.dtsi"
#include <dt-bindings/rtc/rtc-stm32.h>
/ {
model = "STMicroelectronics STM32MP157F-DK2 Discovery Board";
compatible = "st,stm32mp157f-dk2", "st,stm32mp157";
aliases {
serial3 = &usart2;
};
chosen {
#address-cells = <1>;
#size-cells = <1>;
ranges;
stdout-path = "serial0:115200n8";
framebuffer {
compatible = "simple-framebuffer";
clocks = <&rcc LTDC_PX>, <&rcc DSI>, <&rcc DSI_PX>;
status = "disabled";
};
};
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&gpioh 4 GPIO_ACTIVE_LOW>;
};
};
&cryp1 {
status = "okay";
};
&dsi {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
dsi_in: endpoint {
remote-endpoint = <<dc_ep1_out>;
};
};
port@1 {
reg = <1>;
dsi_out: endpoint {
remote-endpoint = <&panel_in>;
};
};
};
panel_otm8009a: panel-otm8009a@0 {
compatible = "orisetech,otm8009a";
reg = <0>;
reset-gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
power-supply = <&v3v3>;
status = "okay";
port {
panel_in: endpoint {
remote-endpoint = <&dsi_out>;
};
};
};
};
&hdp {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&hdp2_gpo &hdp2_pins_a>;
pinctrl-1 = <&hdp2_sleep_pins_a>;
status = "disabled";
};
&i2c1 {
touchscreen@38 {
compatible = "focaltech,ft6236";
reg = <0x38>;
interrupts = <2 2>;
interrupt-parent = <&gpiof>;
interrupt-controller;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
vcc-supply = <&v3v3>;
iovcc-supply = <&v3v3>;
panel = <&panel_otm8009a>;
status = "okay";
};
};
<dc {
default-on;
status = "okay";
port {
#address-cells = <1>;
#size-cells = <0>;
ltdc_ep1_out: endpoint@1 {
reg = <1>;
remote-endpoint = <&dsi_in>;
};
};
};
&rtc {
st,lsco = <RTC_OUT2_RMP>;
pinctrl-0 = <&rtc_out2_rmp_pins_a>;
pinctrl-names = "default";
};
/* Wifi */
&sdmmc2 {
pinctrl-names = "default", "opendrain", "sleep";
pinctrl-0 = <&sdmmc2_b4_pins_a>;
pinctrl-1 = <&sdmmc2_b4_od_pins_a>;
pinctrl-2 = <&sdmmc2_b4_sleep_pins_a>;
non-removable;
cap-sdio-irq;
st,neg-edge;
bus-width = <4>;
vmmc-supply = <&v3v3>;
mmc-pwrseq = <&wifi_pwrseq>;
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
brcmf: bcrmf@1 {
reg = <1>;
compatible = "brcm,bcm4329-fmac";
};
};
/* Bluetooth */
&usart2 {
pinctrl-names = "default", "sleep", "idle";
pinctrl-0 = <&usart2_pins_c>;
pinctrl-1 = <&usart2_sleep_pins_c>;
pinctrl-2 = <&usart2_idle_pins_c>;
uart-has-rtscts;
status = "okay";
bluetooth {
shutdown-gpios = <&gpioz 6 GPIO_ACTIVE_HIGH>;
compatible = "brcm,bcm43438-bt";
max-speed = <3000000>;
vbat-supply = <&v3v3>;
vddio-supply = <&v3v3>;
};
};
patch file
diff --git a/stm32mp157f-dk2.dts.orig b/stm32mp157f-dk2.dts.spi
index 2462656..e10ff10 100644
--- a/arch/arm/boot/dts/stm32mp157f-dk2.dts
+++ b/arch/arm/boot/dts/stm32mp157f-dk2.dts
@@ -41,6 +41,55 @@
};
};
+&pinctrl {
+ spi5_pins: spi5-pins {
+ pins = "spi5_sck", "spi5_miso", "spi5_mosi", "spi5_nss";
+ function = "spi";
+ };
+};
+
+&spi5 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi5_pins>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ device@0 {
+ compatible = "spi-device";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ status = "okay";
+ };
+};
+
+&gpio {
+ spi5_nss {
+ compatible = "gpio";
+ gpios = <&gpioa 8 GPIO_ACTIVE_LOW>; // EXP_GPIO8
+ status = "okay";
+ };
+
+ spi5_miso {
+ compatible = "gpio";
+ gpios = <&gpioa 9 GPIO_ACTIVE_HIGH>; // EXP_GPIO9
+ status = "okay";
+ };
+
+ spi5_mosi {
+ compatible = "gpio";
+ gpios = <&gpioa 10 GPIO_ACTIVE_HIGH>; // EXP_GPIO10
+ status = "okay";
+ };
+
+ spi5_sck {
+ compatible = "gpio";
+ gpios = <&gpioa 11 GPIO_ACTIVE_HIGH>; // EXP_GPIO11
+ status = "okay";
+ };
+};
+
+
&cryp1 {
status = "okay";
};(modified file)
// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
/*
* Copyright (C) STMicroelectronics 2022 - All Rights Reserved
* Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
*/
/dts-v1/;
#include "stm32mp157.dtsi"
#include "stm32mp15xf.dtsi"
#include "stm32mp15-pinctrl.dtsi"
#include "stm32mp15xxac-pinctrl.dtsi"
#include "stm32mp15xx-dkx.dtsi"
#include "stm32mp157c-dk2-scmi.dtsi"
#include <dt-bindings/rtc/rtc-stm32.h>
/ {
model = "STMicroelectronics STM32MP157F-DK2 Discovery Board";
compatible = "st,stm32mp157f-dk2", "st,stm32mp157";
aliases {
serial3 = &usart2;
};
chosen {
#address-cells = <1>;
#size-cells = <1>;
ranges;
stdout-path = "serial0:115200n8";
framebuffer {
compatible = "simple-framebuffer";
clocks = <&rcc LTDC_PX>, <&rcc DSI>, <&rcc DSI_PX>;
status = "disabled";
};
};
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&gpioh 4 GPIO_ACTIVE_LOW>;
};
};
&pinctrl {
spi5_pins: spi5-pins {
pins = "spi5_sck", "spi5_miso", "spi5_mosi", "spi5_nss";
function = "spi";
};
};
&spi5 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&spi5_pins>;
#address-cells = <1>;
#size-cells = <0>;
device@0 {
compatible = "spi-device";
reg = <0>;
spi-max-frequency = <10000000>;
status = "okay";
};
};
&gpio {
spi5_nss {
compatible = "gpio";
gpios = <&gpioa 8 GPIO_ACTIVE_LOW>; // EXP_GPIO8
status = "okay";
};
spi5_miso {
compatible = "gpio";
gpios = <&gpioa 9 GPIO_ACTIVE_HIGH>; // EXP_GPIO9
status = "okay";
};
spi5_mosi {
compatible = "gpio";
gpios = <&gpioa 10 GPIO_ACTIVE_HIGH>; // EXP_GPIO10
status = "okay";
};
spi5_sck {
compatible = "gpio";
gpios = <&gpioa 11 GPIO_ACTIVE_HIGH>; // EXP_GPIO11
status = "okay";
};
};
&cryp1 {
status = "okay";
};
&dsi {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
dsi_in: endpoint {
remote-endpoint = <<dc_ep1_out>;
};
};
port@1 {
reg = <1>;
dsi_out: endpoint {
remote-endpoint = <&panel_in>;
};
};
};
panel_otm8009a: panel-otm8009a@0 {
compatible = "orisetech,otm8009a";
reg = <0>;
reset-gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
power-supply = <&v3v3>;
status = "okay";
port {
panel_in: endpoint {
remote-endpoint = <&dsi_out>;
};
};
};
};
&hdp {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&hdp2_gpo &hdp2_pins_a>;
pinctrl-1 = <&hdp2_sleep_pins_a>;
status = "disabled";
};
&i2c1 {
touchscreen@38 {
compatible = "focaltech,ft6236";
reg = <0x38>;
interrupts = <2 2>;
interrupt-parent = <&gpiof>;
interrupt-controller;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
vcc-supply = <&v3v3>;
iovcc-supply = <&v3v3>;
panel = <&panel_otm8009a>;
status = "okay";
};
};
<dc {
default-on;
status = "okay";
port {
#address-cells = <1>;
#size-cells = <0>;
ltdc_ep1_out: endpoint@1 {
reg = <1>;
remote-endpoint = <&dsi_in>;
};
};
};
&rtc {
st,lsco = <RTC_OUT2_RMP>;
pinctrl-0 = <&rtc_out2_rmp_pins_a>;
pinctrl-names = "default";
};
/* Wifi */
&sdmmc2 {
pinctrl-names = "default", "opendrain", "sleep";
pinctrl-0 = <&sdmmc2_b4_pins_a>;
pinctrl-1 = <&sdmmc2_b4_od_pins_a>;
pinctrl-2 = <&sdmmc2_b4_sleep_pins_a>;
non-removable;
cap-sdio-irq;
st,neg-edge;
bus-width = <4>;
vmmc-supply = <&v3v3>;
mmc-pwrseq = <&wifi_pwrseq>;
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
brcmf: bcrmf@1 {
reg = <1>;
compatible = "brcm,bcm4329-fmac";
};
};
/* Bluetooth */
&usart2 {
pinctrl-names = "default", "sleep", "idle";
pinctrl-0 = <&usart2_pins_c>;
pinctrl-1 = <&usart2_sleep_pins_c>;
pinctrl-2 = <&usart2_idle_pins_c>;
uart-has-rtscts;
status = "okay";
bluetooth {
shutdown-gpios = <&gpioz 6 GPIO_ACTIVE_HIGH>;
compatible = "brcm,bcm43438-bt";
max-speed = <3000000>;
vbat-supply = <&v3v3>;
vddio-supply = <&v3v3>;
};
};
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