[U-Boot] [PATCH 1/3] samsung: board: support eMMC reset using DT

Minkyu Kang
2015-01-09T07:48:30Z

On 09/01/15 16:31, Joonyoung Shim wrote:
> +Cc Jaehoon,
>
> On 01/09/2015 03:18 AM, Simon Glass wrote:
>> Hi Joonyoung,
>>
>> On 7 January 2015 at 22:44, Joonyoung Shim <jy0922.shim@samsung.com> wrote:
>>> Some exynos boards require special handling of SD4_nRESET_OUT line for
>>> eMMC memory to perform complete reboot e.g. Odroid X2/U3/XU3 boards.
>>>
>>> This will support eMMC reset using DT from reset_misc of samsung common
>>> board file and each board files can support eMMC reset on non DT case.
>>>
>>> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
>>> ---
>>> board/samsung/common/board.c | 27 ++++++++++++++++++++++++++
>>> board/samsung/odroid/odroid.c | 2 +-
>>> doc/device-tree-bindings/exynos/emmc-reset.txt | 15 ++++++++++++++
>>> 3 files changed, 43 insertions(+), 1 deletion(-)
>>> create mode 100644 doc/device-tree-bindings/exynos/emmc-reset.txt
>>>
>>> diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c
>>> index c04ab3c..3218463 100644
>>> --- a/board/samsung/common/board.c
>>> +++ b/board/samsung/common/board.c
>>> @@ -40,6 +40,8 @@ __weak int exynos_power_init(void)
>>> return 0;
>>> }
>>>
>>> +__weak void exynos_reset_misc(void) {}
>>> +
>>> #if defined CONFIG_EXYNOS_TMU
>>> /* Boot Time Thermal Analysis for SoC temperature threshold breach */
>>> static void boot_temp_check(void)
>>> @@ -400,3 +402,28 @@ int misc_init_r(void)
>>> return 0;
>>> }
>>> #endif
>>> +
>>> +void reset_misc(void)
>>> +{
>>> +#ifdef CONFIG_OF_CONTROL
>>
>> I think all Samsung boards have this defined, so this #ifdef can be removed.
>>
>
> OK, if it is true, we can remove this and i will not to support non DT case.

It's OK.

Thanks,
Minkyu Kang.