[PATCH v2 1/2] ufs: core: fix the issue of ICU failure
Peter Wang (王信友)
peter.wang at mediatek.com
Sun Sep 8 20:41:37 PDT 2024
On Fri, 2024-09-06 at 13:39 -0700, Bao D. Nguyen wrote:
>
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> On 9/1/2024 7:18 PM, peter.wang at mediatek.com wrote:
>
> > /* SQRTCy.ICU = 1 */
> > -writel(SQ_ICU, opr_sqd_base + REG_SQRTC);
> > +writel(readl(opr_sqd_base + REG_SQRTC) | SQ_ICU,
> > +opr_sqd_base + REG_SQRTC);
> Hi Peter,
> Instead of readl() here, how about write (SQ_STOP | SQ_ICU) to SQRTC?
>
> Thanks, Bao
Hi Bao,
My opinion is not to do it this way, because we don't know if
the future specification of REG_SQRTC will add extra bits.
Once added, such an approach would again become a bug in ufs driver.
Thanks
Peter
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