On 10/19/2017 2:22 PM, Anders Montonen wrote:
> On Thu, 19 Oct 2017, Minas Harutyunyan wrote:
>
>> Could you please apply this patch.
>> If you confirm that this patch fix your issue with "Transaction Error"
>> and " ChHltd set, but reason is unknown" I'll submit to LKML as final patch.
>>
>> diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index
>> f4ef159b538e..7da22152df68 100644
>> --- a/drivers/usb/dwc2/hcd.c
>> +++ b/drivers/usb/dwc2/hcd.c
>> @@ -331,6 +331,9 @@ static void dwc2_gusbcfg_init(struct dwc2_hsotg *hsotg)
>> usbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
>> usbcfg &= ~(GUSBCFG_HNPCAP | GUSBCFG_SRPCAP);
>>
>> + /* Set HS/FS Timeout Calibration */
>> + usbcfg |= GUSBCFG_TOUTCAL(7);
>> +
>> switch (hsotg->hw_params.op_mode) {
>> case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
>> if (hsotg->params.otg_cap ==
>
> Hi Minas,
>
> The patch clearly reduced the amount of errors logged, but did not fully
> fix the problem. This was with kernel 4.9.39, I can also try with a 4.13
> kernel.
>
> Regards,
> Anders Montonen
>
Hi Anders,
In addition to above patch please apply new one:
@@ -2311,10 +2314,17 @@ static int dwc2_core_init(struct dwc2_hsotg
*hsotg, bool initial_setup)
*/
static void dwc2_core_host_init(struct dwc2_hsotg *hsotg)
{
- u32 hcfg, hfir, otgctl;
+ u32 hcfg, hfir, otgctl, usbcfg, trdtrim;
dev_dbg(hsotg->dev, "%s(%p)\n", __func__, hsotg);
+ /* Set USBTrdTim value */
+ usbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
+ usbcfg &= ~GUSBCFG_USBTRDTIM_MASK;
+ trdtrim = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5;
+ usbcfg |= (trdtrim << GUSBCFG_USBTRDTIM_SHIFT);
+ dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
+
/* Restart the Phy Clock */
dwc2_writel(0, hsotg->regs + PCGCTL);
Thanks,
Minas
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