diff options
| author | Christian Hemp <c.hemp@phytec.de> | 2018-03-07 15:56:40 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-04-16 09:58:07 +0200 |
| commit | b6bebb7acabf24d4ef7d39d7736ca267583c5b5b (patch) | |
| tree | 313917f7bd1ad3ed4e2863897642a21bfb75c94a | |
| parent | b343d6d2bac85a37c0b117c03367591df499fc72 (diff) | |
| download | barebox-b6bebb7acabf24d4ef7d39d7736ca267583c5b5b.tar.gz barebox-b6bebb7acabf24d4ef7d39d7736ca267583c5b5b.tar.xz | |
ARM: i.MX: phytec-som-imx6: phycore: Set BUCK mode to SYNC
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@phytec.de>
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Christian Hemp <c.hemp@phytec.de>
| -rw-r--r-- | arch/arm/boards/phytec-som-imx6/board.c | 51 |
1 files changed, 51 insertions, 0 deletions
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"; |