From: Christian Hemp <c.hemp@xxxxxxxxx>
Set the BUCK mode for all BUCKS (1-4) from BUCK_MODE_AUTO to
BUCK_MODE_SYNC. If the BUCKs are in BUCK_MODE_AUTO in very rare cases
it is possible that the BUCK goes in power down mode.
Signed-off-by: Christian Hemp <c.hemp@xxxxxxxxx>
Signed-off-by: Wadim Egorov <w.egorov@xxxxxxxxx>
Signed-off-by: Stefan Riedmueller <s.riedmueller@xxxxxxxxx>
Signed-off-by: Christian Hemp <c.hemp@xxxxxxxxx>
---
arch/arm/boards/phytec-som-imx6/board.c | 51 +++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/arch/arm/boards/phytec-som-imx6/board.c b/arch/arm/boards/phytec-som-imx6/board.c
index 7b63ee0e0c..f9b6cf55cd 100644
--- a/arch/arm/boards/phytec-som-imx6/board.c
+++ b/arch/arm/boards/phytec-som-imx6/board.c
@@ -28,6 +28,7 @@
#include <gpio.h>
#include <init.h>
#include <of.h>
+#include <i2c/i2c.h>
#include <mach/bbu.h>
#include <platform_data/eth-fec.h>
#include <mfd/imx6q-iomuxc-gpr.h>
@@ -51,6 +52,14 @@
#define MX6_PHYFLEX_ERR006282 IMX_GPIO_NR(2, 11)
+#define DA9062_I2C_ADDRESS 0x58
+
+#define DA9062_BUCK1_CFG 0x9e
+#define DA9062_BUCK2_CFG 0x9d
+#define DA9062_BUCK3_CFG 0xa0
+#define DA9062_BUCK4_CFG 0x9f
+#define DA9062_BUCKx_MODE_SYNCHRONOUS (2 << 6)
+
static void phyflex_err006282_workaround(void)
{
/*
@@ -96,6 +105,45 @@ int ksz8081_phy_fixup(struct phy_device *phydev)
return 0;
}
+static int phycore_da9062_setup_buck_mode(void)
+{
+ struct i2c_adapter *adapter = NULL;
+ struct i2c_client client;
+ unsigned char value;
+ int bus = 0;
+ int ret;
+
+ adapter = i2c_get_adapter(bus);
+ if (!adapter)
+ return -ENODEV;
+
+ client.adapter = adapter;
+ client.addr = DA9062_I2C_ADDRESS;
+
+ value = DA9062_BUCKx_MODE_SYNCHRONOUS;
+
+ ret = i2c_write_reg(&client, DA9062_BUCK1_CFG, &value, 1);
+ if (ret != 1)
+ goto err_out;
+
+ ret = i2c_write_reg(&client, DA9062_BUCK2_CFG, &value, 1);
+ if (ret != 1)
+ goto err_out;
+
+ ret = i2c_write_reg(&client, DA9062_BUCK3_CFG, &value, 1);
+ if (ret != 1)
+ goto err_out;
+
+ ret = i2c_write_reg(&client, DA9062_BUCK4_CFG, &value, 1);
+ if (ret != 1)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ return ret;
+}
+
static int physom_imx6_devices_init(void)
{
int ret;
@@ -127,6 +175,9 @@ static int physom_imx6_devices_init(void)
|| of_machine_is_compatible("phytec,imx6dl-pcm058-nand")
|| of_machine_is_compatible("phytec,imx6dl-pcm058-emmc")) {
+ if (phycore_da9062_setup_buck_mode())
+ pr_err("Setting PMIC BUCK mode failed\n");
+
barebox_set_hostname("phyCORE-i.MX6");
default_environment_path = "/chosen/environment-spinor";
default_envdev = "SPI NOR flash";
--
2.16.1
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
