[U-Boot] [PATCH 1/2] armv8: emc2305: add support for fan controller

[Meenakshi Aggarwal]

Gentle reminter

> -----Original Message-----
> From: Meenakshi Aggarwal <meenakshi.aggarwal at nxp.com>
> Sent: Friday, November 30, 2018 10:32 PM
> To: u-boot at lists.denx.de; York Sun <york.sun at nxp.com>
> Cc: Meenakshi Aggarwal <meenakshi.aggarwal at nxp.com>
> Subject: [PATCH 1/2] armv8: emc2305: add support for fan controller
> 
> Add support for fan controller emc2305.
> 
> Signed-off-by: Sriram Dash <sriram.dash at nxp.com>
> Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal at nxp.com>
> ---
>  arch/arm/cpu/armv8/fsl-layerscape/Kconfig |  6 +++++
>  board/freescale/common/Makefile           |  2 ++
>  board/freescale/common/emc2305.c          | 41
> +++++++++++++++++++++++++++++++
>  board/freescale/common/emc2305.h          | 23 +++++++++++++++++
>  4 files changed, 72 insertions(+)
>  create mode 100644 board/freescale/common/emc2305.c  create mode
> 100644 board/freescale/common/emc2305.h
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> index 5dba2af..b0e779d 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> @@ -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
> diff --git a/board/freescale/common/Makefile
> b/board/freescale/common/Makefile index e3c5eae..a9d61a8 100644
> --- a/board/freescale/common/Makefile
> +++ b/board/freescale/common/Makefile
> @@ -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/
> diff --git a/board/freescale/common/emc2305.c
> b/board/freescale/common/emc2305.c
> new file mode 100644
> index 0000000..8523084
> --- /dev/null
> +++ b/board/freescale/common/emc2305.c
> @@ -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"); }
> diff --git a/board/freescale/common/emc2305.h
> b/board/freescale/common/emc2305.h
> new file mode 100644
> index 0000000..eddf537
> --- /dev/null
> +++ b/board/freescale/common/emc2305.h
> @@ -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_ */
> --
> 1.9.1