michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards: esp32c3_devkitm: dts: default pinctrl states

Browse source 
Add default pinctrl states to UART, SPI and I2C
peripherals.

I2C's pin information information is kept to
trigger the bus recovery mechanism in case of
failure.

I2C_0's default SDA pin is changed to no conflict
with SPI2's MISO pin.

Signed-off-by: Glauber Maroto Ferreira <glauber.ferreira@espressif.com>
This commit is contained in:
Glauber Maroto Ferreira 2022-02-15 08:44:23 -03:00 • committed by Carles Cufí
commit 7e0ad40d3f
2 changed files with 62 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

53
boards/riscv/esp32c3_devkitm/esp32c3_devkitm-pinctrl.dtsi Normal file
View file

@ -0,0 +1,53 @@
/*
* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <dt-bindings/pinctrl/esp-pinctrl-common.h>
#include <dt-bindings/pinctrl/esp32c3-pinctrl.h>
#include <dt-bindings/pinctrl/esp32c3-gpio-sigmap.h>
&pinctrl {
uart0_tx_gpio21: uart0_tx_gpio21 {
pinmux = <UART0_TX_GPIO21>;
};
uart0_rx_gpio20: uart0_rx_gpio20 {
pinmux = <UART0_RX_GPIO20>;
bias-pull-up;
};
spim2_miso_gpio2: spim2_miso_gpio2 {
pinmux = <SPIM2_MISO_GPIO2>;
};
spim2_mosi_gpio7: spim2_mosi_gpio7 {
pinmux = <SPIM2_MOSI_GPIO7>;
output-low;
};
spim2_sclk_gpio6: spim2_sclk_gpio6 {
pinmux = <SPIM2_SCLK_GPIO6>;
};
spim2_csel_gpio10: spim2_csel_gpio10 {
pinmux = <SPIM2_CSEL_GPIO10>;
};
i2c0_sda_gpio1: i2c0_sda_gpio1 {
pinmux = <I2C0_SDA_GPIO1>;
bias-pull-up;
drive-open-drain;
output-high;
};
i2c0_scl_gpio3: i2c0_scl_gpio3 {
pinmux = <I2C0_SCL_GPIO3>;
bias-pull-up;
drive-open-drain;
output-high;
};
};

16
boards/riscv/esp32c3_devkitm/esp32c3_devkitm.dts
View file

@ -7,6 +7,7 @@
/dts-v1/; /dts-v1/;
#include <espressif/esp32c3.dtsi> #include <espressif/esp32c3.dtsi>
#include "esp32c3_devkitm-pinctrl.dtsi"
/ { / {
model = "esp32c3_devkitm"; model = "esp32c3_devkitm";
@ -40,15 +41,17 @@
&uart0 { &uart0 {
status = "okay"; status = "okay";
current-speed = <115200>; current-speed = <115200>;
tx-pin = <21>; pinctrl-0 = <&uart0_tx_gpio21 &uart0_rx_gpio20>;
rx-pin = <20>; pinctrl-names = "default";
}; };
&i2c0 { &i2c0 {
status = "okay"; status = "okay";
clock-frequency = <I2C_BITRATE_STANDARD>; clock-frequency = <I2C_BITRATE_STANDARD>;
sda-pin = <2>; sda-pin = <1>;
scl-pin = <3>; scl-pin = <3>;
pinctrl-0 = <&i2c0_sda_gpio1 &i2c0_scl_gpio3>;
pinctrl-names = "default";
}; };
&trng0 { &trng0 {
@ -59,10 +62,9 @@
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;
status = "okay"; status = "okay";
miso-pin = <2>; pinctrl-0 = <&spim2_miso_gpio2 &spim2_mosi_gpio7
mosi-pin = <7>; &spim2_sclk_gpio6 &spim2_csel_gpio10>;
sclk-pin = <6>; pinctrl-names = "default";
csel-pin = <10>;
}; };
&gpio0 { &gpio0 {