linux-kernel - Re: [PATCH v3] clk: rockchip: reset init state before mmc card initialization

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Date:	Thu, 1 Oct 2015 16:37:01 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Shawn Lin <shawn.lin@...k-chips.com>
Cc:	Michael Turquette <mturquette@...libre.com>,
	Heiko Stuebner <heiko@...ech.de>, linux-clk@...r.kernel.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3] clk: rockchip: reset init state before mmc card
 initialization

On 09/04, Shawn Lin wrote:
> mmc host controller's IO input/output timing is unpredictable if
> bootloader execute tuning for HS200 mode. It might make kernel failed
> to initialize mmc card in identification mode. The root cause is
> tuning phase and degree setting for HS200 mode in bootloader aren't
> applicable to that of identification mode in kernel stage. Anyway, we
> can't force all bootloaders to reset tuning phase and degree setting
> before into kernel. Simply reset it in rockchip_clk_register_mmc.
> 
> Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
> 
> Reviewed-by: Heiko Stuebner <heiko@...ech.de>
> ---

Applied to clk-next

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