[U-Boot] [PATCH V2 0/3] Fix fdt 'reg' parsing and unbreak few Exynos4 boards
Przemyslaw Marczak
p.marczak at samsung.com
Mon Sep 28 14:17:01 CEST 2015
Booting of Odroid U3 with SD card, ends with error:
MMC: EXYNOS DWMMC: 0
Card did not respond to voltage select!
*** Warning - MMC init failed, using default environment
Generally this was broken, because of wrong addresses,
assigned to GPIOs.
The source of the problem was in rework of lib/fdtdec.c, after which
function fdtdec_get_addr() doesn't work as previous and function
dev_get_addr() doesn't work as expected.
The code after rework in lib/fdtdec.c assumed, that #size-cells property,
should be always greater or equal to 1, this was wrong, because it can be 0.
In case of debugging the issue, I found, that mmc clock was computed wrong,
for Exynos4, because of function get_mmc_clk(), which always returns -1 for
this SoC.
The patchset should fix booting on all Exynos4 boards, however it was tested
on: Odroid X2 / U3 / XU3 and Trats2.
Przemyslaw Marczak (3):
fdtdec: fix parsing 'reg' property with zero value in '#size-cells'
gpio: s5p: call: dev_get_addr() instead of fdtdec_get_addr()
mach-exynos: clock: restore calling dead exynos4_get_mmc_clk()
arch/arm/mach-exynos/clock.c | 10 ++++------
drivers/gpio/s5p_gpio.c | 18 +++++++++++-------
lib/fdtdec.c | 2 +-
3 files changed, 16 insertions(+), 14 deletions(-)
--
1.9.1
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