[PATCH] soc: rockchip: disable jtag switching for RK3128 SoCs
shawn.lin at rock-chips.com
Mon Mar 5 06:55:14 PST 2018
On 2018/3/5 22:42, Heiko Stuebner wrote:
> Hi Shawn,
> Am Montag, 5. März 2018, 15:39:04 CET schrieb Shawn Lin:
>> On 2018/3/2 20:20, Heiko Stuebner wrote:
>>> From: Xiao Yao <xiaoyao at rock-chips.com>
>>> Disable IO function switching between sdmmc and jtag
>>> for RK3128 SoCs.
>> I acked this on the vendor kernel tree, so FWIW:
>> Reviewed-by: Shawn Lin <shawn.lin at rock-chips.com>
>> Hope this is one of the final patches for that, as I would
>> revive IO function switching between sdmmc and jtag for newer
>> SoCs after addressing the problem from HW level.
> the main problem we had with that was that the mmc-subsystem
> somehow definitly didn't like it when the controller pins where pulled
> out from under it on card eject.
Right, we had sort out it's timing revelant between mmc controller and
the switching hw block.
> But of course, if you can get this solved by hw somehow, that
> would be pretty cool :-)
It is under extensively tested now, and seems quite positive. :)
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