Thanks for the patch!
On 10/19/20 7:55 PM, Ansuel Smith wrote:
> The use of PHY_REFCLK_USE_PAD introduced a regression for apq8064
> devices. It was tested that while apq doesn't require the padding, ipq
> SoC must use it or the kernel hangs on boot.
>
> Fixes: de3c4bf6489 ("PCI: qcom: Add support for tx term offset for rev 2.1.0")
> Reported-by: Ilia Mirkin <imirkin@xxxxxxxxxxxx>
> Signed-off-by: Ilia Mirkin <imirkin@xxxxxxxxxxxx>
> Signed-off-by: Ansuel Smith <ansuelsmth@xxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx # v4.19+
Acked-by: Stanimir Varbanov <svarbanov@xxxxxxxxxx>
> ---
> drivers/pci/controller/dwc/pcie-qcom.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
> index 3aac77a295ba..dad6e9ce66ba 100644
> --- a/drivers/pci/controller/dwc/pcie-qcom.c
> +++ b/drivers/pci/controller/dwc/pcie-qcom.c
> @@ -387,7 +387,9 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
>
> /* enable external reference clock */
> val = readl(pcie->parf + PCIE20_PARF_PHY_REFCLK);
> - val &= ~PHY_REFCLK_USE_PAD;
> + /* USE_PAD is required only for ipq806x */
> + if (!of_device_is_compatible(node, "qcom,pcie-apq8064"))
> + val &= ~PHY_REFCLK_USE_PAD;
> val |= PHY_REFCLK_SSP_EN;
> writel(val, pcie->parf + PCIE20_PARF_PHY_REFCLK);
>
>
--
regards,
Stan
