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| Started by | Stephen Boyd <sboyd@codeaurora.org> |
|---|---|
| First post | 2015-10-02 01:40 +0200 |
| Last post | 2015-10-02 01:40 +0200 |
| Articles | 1 — 1 participant |
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Re: [PATCH v3] clk: rockchip: reset init state before mmc card initialization Stephen Boyd <sboyd@codeaurora.org> - 2015-10-02 01:40 +0200
| From | Stephen Boyd <sboyd@codeaurora.org> |
|---|---|
| Date | 2015-10-02 01:40 +0200 |
| Subject | Re: [PATCH v3] clk: rockchip: reset init state before mmc card initialization |
| Message-ID | <qeVC9-2KR-1@gated-at.bofh.it> |
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@rock-chips.com> > > Reviewed-by: Heiko Stuebner <heiko@sntech.de> > --- Applied to clk-next -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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