[poky] [yocto][PATCH] U-Boot 2018.03 wrong SD card clock speed

[nick83ola]

This patch fixes a problem with U-Boot 2018.03.
Basically U-boot get for the sd card the wrong clock source and with the
latest firmware (that changes it) it hangs when it try to access the sd
card.
See this discussion

https://github.com/raspberrypi/firmware/issues/953

This patch has already been accepted in U-boot source tree and it will be
included in 2018.05 version.

====================================
Another consideration: the current structure of the u-boot recipe render
very difficult to create a bbappend to apply for example a patch.

$ ls
files
u-boot_2018.03.bb
u-boot-common_2018.03.inc
u-boot-fw-utils_2018.03.bb
u-boot.inc  u-boot-mkimage_2018.03.bb

$ cat u-boot-common_2018.03.inc
HOMEPAGE = "http://www.denx.de/wiki/U-Boot/WebHome"
SECTION = "bootloaders"

LICENSE = "GPLv2+"
LIC_FILES_CHKSUM =
"file://Licenses/README;md5=a2c678cfd4a4d97135585cad908541c6"
PE = "1"

# We use the revision in order to avoid having to fetch it from the
# repo during parse
SRCREV = "f95ab1fb6e37f0601f397091bb011edf7a98b890"

SRC_URI = " \
    git://git.denx.de/u-boot.git \
    file://0001-mmc-use-core-clock-frequency-in-bcm2835-sdhost.patch \
"

S = "${WORKDIR}/git"


This because the SRC_URI is in the u-boot-common_2018.03.inc file and this
file is included by the other u-boot recipes

So for using a bbappend I have to create 3 bbappend for each of the recipe

u-boot_2018.03.bb  u-boot-fw-utils_2018.03.bb  u-boot-mkimage_2018.03.bb
Also why the .inc file has a version number?

I think that the best approach here would be to have only one recipe that
provides the
u-book-mkimage u-boot-fw-utils and u-boot packages
================================================

Best Regards

Nicola Lunghi
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