bcm63xx/u-boot/drivers/w1, branch master

w1: Add driver for i.MX bus master controller

2019-01-01T13:12:18Z

Two variants of controllers are supported: V1 (bitwise only) found in i.MX21, i.MX27, i.MX31, i.MX51 V2 (byte operations) found in i.MX25, i.MX35, i.MX50, i.MX53 Only tested on i.MX53 hardware but in both modes (by modifying the device tree). Signed-off-by: Martin Fuzzey

w1: fix occasional enumeration failure

2018-12-06T22:15:15Z

Sometimes enumeration fails (about 1 in 50 times on my custom board). The underlying reason is probably electrical but Linux does not have the problem. Comparing the Linux / u-boot implementations shows that Linux retries the error case whereas u-boot aborts early. Removing the early abort in u-boot fixes the problem. Signed-off-by: Martin Fuzzey

w1: fix data abort if no one wire bus master present

2018-11-01T14:02:10Z

When the "w1 bus" command is used with no bus master present a data abort may occur. This is because uclass_first_device() returns zero, but sets the output struct udevice pointer to NULL in the no device found case. Fix w1_get_bus() to account for this and return an error code as is expected by the callers. Signed-off-by: Martin Fuzzey Reviewed-by: Eugen Hristev

w1: identify devices with w1-eeprom uclass

2018-09-29T00:22:35Z

When a new device is discovered, this may be a w1 eeprom device. Attempt to find the proper node and driver from the w1-eeprom subsystem. Signed-off-by: Eugen Hristev

w1: Add 1-Wire gpio driver

2018-09-29T00:22:34Z

Add a bus driver for bitbanging a 1-Wire bus over a GPIO. Signed-off-by: Maxime Ripard [eugen.hristev@microchip.com: fixed some issues] Signed-off-by: Eugen Hristev

w1: Add 1-Wire uclass

2018-09-29T00:22:34Z

We might want to use 1-Wire devices connected on boards such as EEPROMs in U-Boot. Provide a framework to be able to do that. Signed-off-by: Maxime Ripard [eugen.hristev@microchip.com: reworked] Signed-off-by: Eugen Hristev