Re: [PATCH] mmc: sdhci-esdhc-imx: reset the tuning logic before execute tuning

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Hi Haibo,

On Fri, Oct 28, 2022 at 6:25 AM <haibo.chen@xxxxxxx> wrote:
>
> From: Haibo Chen <haibo.chen@xxxxxxx>
>
> For standard tuning method on usdhc, the previous tuning result can
> impact current tuning result, let current tuning can't set the correct
> delay cell. And from the logic, this is also reasonable for manual
> tuning method. So reset the tuning logic before execute tuning.
> To avoid compile issue, this patch also move the esdhc_reset_tuning()
> upper.
>
> Find this issue when support SDIO WiFi in band wakeup feature. After
> system resume back, will do re-tuning, but then meet data CRC error.
>
> Do not meet this issue on SD/eMMC, because we already call
> esdhc_reset_tuning() when config the legency ios, and SD/eMMC need
> to re-init when system resume back, but SDIO device don't do re-init
> if it has MMC_PM_KEEP_POWER pm_flags.

Fixes tag missing?



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