[U-Boot] [PATCH V3 0/4] Fix fdt 'reg' parsing and unbreak few Exynos4 boards

[Przemyslaw Marczak]

Hi Simon,

On 10/03/2015 03:36 PM, Simon Glass wrote:
> Hi,
>
> On 30 September 2015 at 19:30, Simon Glass <sjg at chromium.org> wrote:
>> Hi Przemyslaw,
>>
>> On 30 September 2015 at 06:25, Przemyslaw Marczak <p.marczak at samsung.com> wrote:
>>> Hello Tom, Simon,
>>>
>>>
>>> On 09/30/2015 03:13 PM, Tom Rini wrote:
>>>>
>>>> On Wed, Sep 30, 2015 at 01:14:49PM +0200, Przemyslaw Marczak wrote:
>>>>
>>>>> Booting of Odroid U3/X2 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 works 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 Trats / Trats2.
>>>>>
>>>>> Przemyslaw Marczak (4):
>>>>>     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()
>>>>>     trats: fdt: disable unused DW MMC
>>>>>
>>>>>    arch/arm/dts/exynos4210-trats.dts |  4 ++++
>>>>>    arch/arm/mach-exynos/clock.c      | 10 ++++------
>>>>>    drivers/gpio/s5p_gpio.c           | 18 +++++++++++-------
>>>>>    lib/fdtdec.c                      |  2 +-
>>>>>    4 files changed, 20 insertions(+), 14 deletions(-)
>>>>
>>>>
>>>> Should I grab this directly or expect a PR from the DT or Samsung tree?
>>>> Thanks!
>>>>
>>>
>>> If this is not a problem for you, then it will be nice :)
>>>
>>> Simon,
>>> Is that good to you?
>>
>> Yes, thank you both.
>
> Hmm I'm going to pick this up for the DT tree as there's another patch
> needed from Stephen also. Tom if you already have this locally let me
> know.
>
> Regards,
> Simon
>

Ok, thanks.

Best regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com