Re: [PATCH 03/10] phy: qcom-usb-hsic: do not run the sleep calibration clock
Konrad Dybcio <[email protected]>
| Newsgroups | org.kernel.vger.linux-gpio,org.infradead.lists.linux-phy,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-usb |
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| Message-ID | <[email protected]> |
On 8/10/26 5:42 PM, Dmitry Baryshkov wrote: > With the cal_sleep (32 kHz IO calibration sleep) clock running, the > HSIC PHY engages its sleep calibration: the strobe/data pad > calibration converges to different values than with the active > calibration alone, HSIC_CFG reports the sleep calibration state, and > the port no longer detects a device connect - an onboard HSIC hub > signalling its attach after reset is never seen (observed on the > APQ8074 Dragonboard against its USB4604 hub, by comparing the ULPI > register state against the vendor kernel, which never enables this > clock: with cal_sleep enabled ULPI HSIC_CFG reads 0xab and the pad > registers 0x0f/0x0d, without it 0xa9 and 0x10/0x10, matching the > working vendor configuration). > > Stop requesting and enabling the cal_sleep clock. > > Assisted-by: Claude:claude-fable-5 > Signed-off-by: Dmitry Baryshkov <[email protected]> > --- it seems to be used by the slightly different xhci-hsic driver for 8084 Reviewed-by: Konrad Dybcio <[email protected]> Konrad