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armv8: emc2305: add support for fan controller

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Add support for fan controller emc2305.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
This commit is contained in:
Meenakshi Aggarwal 2018-11-30 22:32:11 +05:30 committed by Prabhakar Kushwaha
parent 58c3e62040
commit e088e587ed
4 changed files with 72 additions and 0 deletions
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6
arch/arm/cpu/armv8/fsl-layerscape/Kconfig
View file

@ -346,6 +346,12 @@ config MAX_CPUS
cores, count the reserved ports. This will allocate enough memory
in spin table to properly handle all cores.
config EMC2305
bool "Fan controller"
help
Enable the EMC2305 fan controller for configuration of fan
speed.
config SECURE_BOOT
bool "Secure Boot"
help

2
board/freescale/common/Makefile
View file

@ -64,6 +64,8 @@ obj-$(CONFIG_POWER_MC34VR500) += mc34vr500.o
obj-$(CONFIG_LS102XA_STREAM_ID) += ls102xa_stream_id.o
obj-$(CONFIG_EMC2305) += emc2305.o
# deal with common files for P-series corenet based devices
obj-$(CONFIG_TARGET_P2041RDB) += p_corenet/
obj-$(CONFIG_TARGET_P3041DS) += p_corenet/

41
board/freescale/common/emc2305.c Normal file
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@ -0,0 +1,41 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018 NXP.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <i2c.h>
#include <asm/io.h>
#include "emc2305.h"
DECLARE_GLOBAL_DATA_PTR;
void set_fan_speed(u8 data)
{
u8 index;
u8 Fan[NUM_OF_FANS] = {I2C_EMC2305_FAN1,
I2C_EMC2305_FAN2,
I2C_EMC2305_FAN3,
I2C_EMC2305_FAN4,
I2C_EMC2305_FAN5};
for (index = 0; index < NUM_OF_FANS; index++) {
if (i2c_write(I2C_EMC2305_ADDR, Fan[index], 1, &data, 1) != 0) {
printf("Error: failed to change fan speed @%x\n",
Fan[index]);
}
}
}
void emc2305_init(void)
{
u8 data;
data = I2C_EMC2305_CMD;
if (i2c_write(I2C_EMC2305_ADDR, I2C_EMC2305_CONF, 1, &data, 1) != 0)
printf("Error: failed to configure EMC2305\n");
}

23
board/freescale/common/emc2305.h Normal file
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@ -0,0 +1,23 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2018 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __EMC2305_H_
#define __EMC2305_H_
#define I2C_EMC2305_CONF 0x20
#define I2C_EMC2305_FAN1 0x30
#define I2C_EMC2305_FAN2 0x40
#define I2C_EMC2305_FAN3 0x50
#define I2C_EMC2305_FAN4 0x60
#define I2C_EMC2305_FAN5 0x70
#define NUM_OF_FANS 5
void emc2305_init(void);
void set_fan_speed(u8 data);
#endif /* __EMC2305_H_ */