Re: [PATCH 03/10] phy: qcom-usb-hsic: do not run the sleep calibration clock

[Konrad Dybcio]

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 <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---

it seems to be used by the slightly different xhci-hsic driver for 8084 

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad