linux-kernel - Re: [PATCH v3] mmc: dw_mmc: rockchip: Set the drive phase properly

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Date:	Fri, 13 May 2016 00:52:51 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Douglas Anderson <dianders@...omium.org>
Cc:	jh80.chung@...sung.com, Ulf Hansson <ulf.hansson@...aro.org>,
	shawn.lin@...k-chips.com, linux-rockchip@...ts.infradead.org,
	briannorris@...omium.org, linux-mmc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] mmc: dw_mmc: rockchip: Set the drive phase properly

Am Donnerstag, 12. Mai 2016, 11:31:50 schrieb Douglas Anderson:

[...]

> In commit 7a03fe6f48f3 ("clk: rockchip: reset init state before mmc card
> initialization") we actually started setting this explicitly in the
> kernel, but that commit wasn't quite right and also wasn't quite
> enough.  See <https://patchwork.kernel.org/patch/9085311/> for some
> details.
> 
> Let's explicitly set this phase in dw_mmc.

[...]

> Fixes: 7a03fe6f48f3 ("clk: rockchip: reset init state before mmc card
> initialization") Signed-off-by: Douglas Anderson <dianders@...omium.org>
> Reviewed-by: Shawn Lin <shawn.lin@...k-chips.com>

I've tested this patch together with the two clock patches linked above on a 
rk3288-firefly and a rk3288-veyron-jerry. On the firefly tuning still does not 
work (probably really some regulator issue) and on veyron tuning still works 
as expected, so

Tested-by: Heiko Stuebner <heiko@...ech.de>

Doug's explanations both in the commit message and the code look sane to me, 
but I don't feel confident enough in my understanding of the matter to 
transform that into a Reviewed-by tag.


Heiko