Re: [PATCH v4] mmc: mtk-sd: reduce CIT for better performance

From: Wenbin Mei (梅文彬)
Date: Mon Jun 05 2023 - 21:33:48 EST


On Mon, 2023-06-05 at 15:46 +0200, Alexandre Mergnat wrote:
>
> External email : Please do not click links or open attachments until
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> On 05/06/2023 14:14, Wenbin Mei wrote:
> > CQHCI_SSC1 indicates to CQE the polling period to use when using
> periodic
> > SEND_QUEUE_STATUS(CMD13) polling.
> > Since MSDC CQE uses msdc_hclk as ITCFVAL, so driver should use hclk
> > frequency to get the actual time.
> > The default value 0x1000 that corresponds to 150us for MediaTek
> SoCs, let's
> > decrease it to 0x40 that corresponds to 2.35us, which can improve
> the
> > performance of some eMMC devices.
>
> Hi,
>
> - Can you add the version change log and the link to the previous
> patch version (at least) please ?
>
> - On which board(s) did you test this patch please ?
>
Thanks for your reminder.
I will add the version change log and the link.

We test this patch on our demo board.

Begards,
Wenbin
> --
> Regards,
> Alexandre
>