u-boot

Commit Graph

Author	SHA1	Message	Date
Jonathan Gray	8ae1f82988	mmc: use core clock frequency in bcm2835 sdhost In raspberrypi-firmware 7fdcd00e00a42a1c91e8bd6f5eb8352fe9358557 and later start.elf now sets the EMMC clock to 200 MHz. According to Phil Elwell in https://github.com/raspberrypi/firmware/issues/953 the SDHost controller shares the core/VPU clock and doesn't use the EMMC clock. Use the core clock id when determining the frequency to allow U-Boot to work with recent versions of raspberrypi-firmware. Otherwise U-Boot hangs at: U-Boot 2018.03 (Mar 14 2018 - 20:36:00 +1100) DRAM: 948 MiB RPI 3 Model B (0xa02082) MMC: mmc@7e202000: 0, sdhci@7e300000: 1 Loading Environment from FAT... Signed-off-by: Jonathan Gray <jsg@jsg.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>	6 years ago
Alexander Graf	c8a73a26d6	mmc: Add bcm2835 sdhost controller The BCM2835 family of SoCs has 2 different SD controllers: One based on the SDHCI spec and a custom, home-grown one. This patch implements a driver for the latter based on the Linux driver. This is needed so that we can make use of device trees that assume driver presence of both SD controllers. Signed-off-by: Alexander Graf <agraf@suse.de>	6 years ago

Author

SHA1

Message

Date

Jonathan Gray

8ae1f82988

mmc: use core clock frequency in bcm2835 sdhost

In raspberrypi-firmware 7fdcd00e00a42a1c91e8bd6f5eb8352fe9358557 and
later start.elf now sets the EMMC clock to 200 MHz.

According to Phil Elwell in
https://github.com/raspberrypi/firmware/issues/953
the SDHost controller shares the core/VPU clock and doesn't use
the EMMC clock.

Use the core clock id when determining the frequency to allow
U-Boot to work with recent versions of raspberrypi-firmware.
Otherwise U-Boot hangs at:

U-Boot 2018.03 (Mar 14 2018 - 20:36:00 +1100)

DRAM:  948 MiB
RPI 3 Model B (0xa02082)
MMC:   mmc@7e202000: 0, sdhci@7e300000: 1
Loading Environment from FAT...

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

6 years ago

Alexander Graf

c8a73a26d6

mmc: Add bcm2835 sdhost controller

The BCM2835 family of SoCs has 2 different SD controllers: One based on
the SDHCI spec and a custom, home-grown one.

This patch implements a driver for the latter based on the Linux driver.
This is needed so that we can make use of device trees that assume driver
presence of both SD controllers.

Signed-off-by: Alexander Graf <agraf@suse.de>

6 years ago

2 Commits (8ae1f8298820a19380bafc07ad554bd629cc27be)