armv8: emc2305: add support for fan controller

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>

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 01c5068ab6dda92b8941e6a50fa132a360466478..a844b34b617a4664902d5ebaeed83f6e6fe23135 100644 (file)
--- 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 e3c5eaeb7026525e41810c7aebb00876963cd397..a9d61a8bcf5b95670e1208a44a73231e96134b5c 100644 (file)
--- 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 (file)
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 (file)
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_ */