u-boot.git/arch, branch v2022.04-rc2

arm: pdu001: Fix dt to work with the current am33xx dtsi files

2022-02-14T18:04:39Z

The changes introduced with commit 6337d53fdf45 ("arm: dts: sync am33xx with Linux 5.9-rc7") prevent the PDU001 from operating correctly. This patch fixes the configuration of the pin multiplexer and uart3. Signed-off-by: Felix Brack

acpi: Move acpi_write_tables() to a generic header

2022-02-11T16:29:23Z

This function is used by both x86 and sandbox. Put it in a common header file. Signed-off-by: Simon Glass

arm:dts:k3-am64-sk: EMIF tool update to 0.8.0 with 1333MTs for lpddr4

2022-02-10T22:17:39Z

EMIF tool for AM64 SK is now updated to 0.8.0 that includes * disabled Write DQ training * improve CA ODT to 60 ohms The lpddr4 enabled with periodic WDQ training is causing periodic 26us stall. This makes the SoC stall without doing anything which leads to R5 interrupt latency in TCM memory. Due to this periodic training there are some outstanding CPU transactions waiting for the lpddr4 to complete. Hence, disable the periodic write DQ training during the non-initialization stage of lpddr4 which results in an approximate 1us stall. Also, update the lpddr4 config to improve CA ODT by 60 ohms The rationales are as follows: - PI_WDQLVL_EN: 2 Bits register field to support write DQ leveling, disable bit 1 that supports Write DQ during non-initialization to avoid ~26us stall during code execution. - MR11_DATA_F1/F2_x register fields value changed to 0x66 that changes the CA ODT from 48ohm to 60ohm to improve the eye margin on CA bus by increasing the signal swing. Signed-off-by: James Doublesin Signed-off-by: Sinthu Raja

powerpc: mpc8xx: drop CONFIG_SYS_RESET_ADDRESS

2022-02-10T21:44:23Z

There are no boards that define CONFIG_SYS_RESET_ADDRESS, so drop the associated mpc8xx code that checks for it. Signed-off-by: Ovidiu Panait Reviewed-by: Stefan Roese Acked-by: Christophe Leroy

spi: apple: Add driver for Apple SPI controller

2022-02-10T21:44:23Z

Add a driver for the SPI controller integrated on Apple SoCs. This is necessary to support the keyboard on Apple Silicon laopts since their keyboard uses an Apple-specific HID over SPI protocol. Signed-off-by: Mark Kettenis Reviewed-by: Simon Glass Tested on: Macbook Air M1 Tested-by: Simon Glass

power: domain: apple: Add reset support

2022-02-10T21:44:23Z

The power management controller found on Apple SoCs als provides a way to reset all devices within a power domain. This is needed to cleanly shutdown the NVMe controller before we hand over control to the OS. Signed-off-by: Mark Kettenis Reviewed-by: Simon Glass Tested on: Macbook Air M1 Tested-by: Simon Glass Reviewed-by: Jaehoon Chung

arm: apple: Add RTKit support

2022-02-10T21:44:23Z

Most Apple IOPs run a firmware that is based on what Apple calls RTKit. RTKit implements a common mailbox protocol. This code provides an implementation of the AP side of this protocol, providing a function to initialize RTKit-based firmwares as well as a function to do a clean shutdown of this firmware. Signed-off-by: Mark Kettenis Reviewed-by: Simon Glass Tested on: Macbook Air M1 Tested-by: Simon Glass

arm: apple: Change SoC name from "m1" into "apple"

2022-02-10T21:44:23Z

U-Boot is expected to support multiple generations of Apple SoCs in a single binary with a single defconfig. Therefore it makes more sense to set SYS_SOC to "apple". Signed-off-by: Mark Kettenis Reviewed-by: Simon Glass

mailbox: apple: Add driver for Apple IOP mailbox

2022-02-10T21:44:23Z

This mailbox driver provides a communication channel with the Apple IOP controllers found on Apple SoCs. These IOP controllers are used to implement various functions such as the System Manegement Controller (SMC) and NVMe storage. It allows sending and receiving a 96-bit message over a single channel. The header file with the struct used for mailbox messages is taken straight from Linux. Signed-off-by: Mark Kettenis Signed-off-by: Sven Peter Reviewed-by: Simon Glass Tested on: Macbook Air M1 Tested-by: Simon Glass

acpi: Move MCFG implementation to common lib

2022-02-09T19:30:13Z

MCFG tables are used on multiple arches. Move to common ACPI lib. Cc: Simon Glass Signed-off-by: Moritz Fischer Reviewed-by: Simon Glass Use sizeof(*mcfg) instead of sizeof(*header) Signed-off-by: Simon Glass