diff options
| -rw-r--r-- | board/freescale/imx93_frdm/imx93_frdm.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/board/freescale/imx93_frdm/imx93_frdm.c b/board/freescale/imx93_frdm/imx93_frdm.c index c436ac6aa47..cfbcde2e1a5 100644 --- a/board/freescale/imx93_frdm/imx93_frdm.c +++ b/board/freescale/imx93_frdm/imx93_frdm.c @@ -5,6 +5,7 @@ #include <env.h> #include <efi_loader.h> +#include <i2c.h> #include <init.h> #include <asm/global_data.h> #include <asm/arch/sys_proto.h> @@ -36,6 +37,62 @@ struct efi_capsule_update_info update_info = { }; #endif /* EFI_HAVE_CAPSULE_SUPPORT */ +#define TCPC_ALERT 0x10 +#define TCPC_ALERT_MASK 0x12 +#define TCPC_FAULT_STATUS_MASK 0x15 + +#define TCPC1_I2C_BUS 2 +#define TCPC1_I2C_ADDR 0x50 + +/* + * Mask all interrupts and clear alert status for the PTN5110 TCPC USB Power + * Delivery controller. This is required to avoid an interrupt storm on OS + * startup, since the interrupt line for the PTN5110 is shared also by the + * PCAL6524 I/O expander. + */ +static int clear_pd_alert(void) +{ + struct udevice *bus; + struct udevice *i2c_dev = NULL; + int ret; + u8 buffer_0[2] = {0, 0}; + u8 buffer_1[2] = {0xff, 0xff}; + + ret = uclass_get_device_by_seq(UCLASS_I2C, TCPC1_I2C_BUS, &bus); + if (ret) { + printf("Failed to get I2C bus %d\n", TCPC1_I2C_BUS); + return ret; + } + + ret = dm_i2c_probe(bus, TCPC1_I2C_ADDR, 0, &i2c_dev); + if (ret) { + printf("Can't find USB PD device at 0x%02x\n", TCPC1_I2C_ADDR); + return ret; + } + + /* Mask all alert status*/ + ret = dm_i2c_write(i2c_dev, TCPC_ALERT_MASK, buffer_0, 2); + if (ret) { + printf("%s dm_i2c_write failed: %d\n", __func__, ret); + return ret; + } + + ret = dm_i2c_write(i2c_dev, TCPC_FAULT_STATUS_MASK, buffer_0, 2); + if (ret) { + printf("%s dm_i2c_write failed: %d\n", __func__, ret); + return ret; + } + + /* Clear active alerts */ + ret = dm_i2c_write(i2c_dev, TCPC_ALERT, buffer_1, 2); + if (ret) { + printf("%s dm_i2c_write failed: %d\n", __func__, ret); + return ret; + } + + return 0; +} + int board_early_init_f(void) { return 0; @@ -61,5 +118,7 @@ int board_late_init(void) env_set_ulong("dofastboot", 1); } + clear_pd_alert(); + return 0; } |