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boards: nios2: Add dts support for i2c

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patch add dts suppoer for i2c.

Signed-off-by: Savinay Dharmappa <savinay.dharmappa@intel.com>
This commit is contained in:
Savinay Dharmappa 2018-12-21 14:26:34 +05:30 • committed by Maureen Helm
commit 955781b896
4 changed files with 22 additions and 3 deletions
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5
boards/nios2/altera_max10/altera_max10.dts
View file

@ -22,3 +22,8 @@
status = "ok";
current-speed = <115200>;
};
&i2c0 {
status = "ok";
clock-frequency = <I2C_BITRATE_ULTRA>;
};

6
drivers/i2c/i2c_nios2.c
View file

@ -157,14 +157,14 @@ static struct i2c_driver_api i2c_nios2_driver_api = {
static struct i2c_nios2_config i2c_nios2_cfg = {
.i2c_dev = {
.i2c_base = (alt_u32 *)I2C_0_BASE,
.i2c_base = (alt_u32 *)DT_I2C_0_BASE_ADDRESS,
.irq_controller_ID = I2C_0_IRQ_INTERRUPT_CONTROLLER_ID,
.irq_ID = I2C_0_IRQ,
.ip_freq_in_hz = I2C_0_FREQ,
.ip_freq_in_hz = DT_I2C_0_BITRATE,
},
};
DEVICE_AND_API_INIT(i2c_nios2_0, CONFIG_I2C_0_NAME, &i2c_nios2_init,
DEVICE_AND_API_INIT(i2c_nios2_0, DT_I2C_0_NAME, &i2c_nios2_init,
NULL, &i2c_nios2_cfg,
POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&i2c_nios2_driver_api);

10
dts/nios2/nios2f.dtsi
View file

@ -1,4 +1,5 @@
#include "skeleton.dtsi"
#include <dt-bindings/i2c/i2c.h>
/ {
cpus {
@ -38,5 +39,14 @@
status = "disabled";
};
i2c0: i2c@100200 {
compatible = "nios2,i2c";
clock-frequency = <I2C_BITRATE_ULTRA>;
#address-cells = <1>;
#size-cells = <0>;
reg = <0x100200 0x400>;
label = "I2C_0";
};
};
};

4
soc/nios2/nios2f-zephyr/dts_fixup.h
View file

@ -9,3 +9,7 @@
#define _ROM_ADDR CONFIG_FLASH_BASE_ADDRESS
#define _ROM_SIZE (CONFIG_FLASH_SIZE *1024)
#define DT_I2C_0_NAME DT_NIOS2_I2C_100200_LABEL
#define DT_I2C_0_BASE_ADDRESS DT_NIOS2_I2C_100200_BASE_ADDRESS
#define DT_I2C_0_BITRATE DT_NIOS2_I2C_100200_CLOCK_FREQUENCY