u-boot.git/drivers/rtc/davinci.c, branch v2023.07.01

rtc: davinci: fix date loaded on reset

2021-06-09T16:53:45Z

On reset, the RTC loads the 2000-01-01 date with a wrong day of the week (Sunday instead of Saturday). Signed-off-by: Dario Binacchi Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210602203805.11494-9-dariobin@libero.it

rtc: davinci: add driver model support

2021-06-09T16:53:45Z

Update the driver to support the device tree and the driver model. The read / write helpers in rtc_ops allow access to scratch registers only. The offset parameter is added to the address of the scratch0 register. Support for non-DM has been removed as there were no users. Signed-off-by: Dario Binacchi Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210602203805.11494-8-dariobin@libero.it

rtc: davinci: use unlock/lock mechanism

2021-06-09T16:53:44Z

The RTC module contains a kicker mechanism to prevent any spurious writes from changing the register values. To set the time, you must first unlock the TC registers, update them and then lock. Signed-off-by: Dario Binacchi Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210602203805.11494-6-dariobin@libero.it

rtc: davinci: check BUSY bit before set TC registers

2021-06-09T16:53:44Z

To write correct data to the TC registers, the STATUS register must be read until the BUSY bit is equal to zero. Once the BUSY flag is zero, there is a 15 μs access period in which the TC registers can be programmed. The rtc_wait_not_busy() has been inspired by the Kernel. Signed-off-by: Dario Binacchi Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210602203805.11494-5-dariobin@libero.it

rtc: davinci: replace 32bit access with 8bit access

2021-06-09T16:53:44Z

Use 32-bit access only where it is needed. Most of the RTC registers contain useful information in the 8 least significant bits, the others are reserved. Signed-off-by: Dario Binacchi Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210602203805.11494-4-dariobin@libero.it

rtc: davinci: fix compiler errors

2021-06-09T16:53:44Z

Fix errors raised by module compilation. Signed-off-by: Dario Binacchi Signed-off-by: Lokesh Vutla Link: https://lore.kernel.org/r/20210602203805.11494-3-dariobin@libero.it

common: Drop linux/delay.h from common header

2020-05-19T01:19:23Z

Move this uncommon header out of the common header. Signed-off-by: Simon Glass

common: Drop log.h from common header

2020-05-19T01:19:18Z

Move this header out of the common header. Signed-off-by: Simon Glass

rtc: remove CONFIG_CMD_DATE dependency

2018-07-25T13:00:24Z

The EFI subsystem accesses the real time clock and is enabled by default. So we should drop any CONFIG_CMD_DATE dependency from the real time clock drivers. Signed-off-by: Heinrich Schuchardt Signed-off-by: Alexander Graf

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12Z

When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini