On Mon, Feb 17, 2020 at 07:00:03PM +0530, Akash Asthana wrote:
> Get the interconnect paths for SPI based Serial Engine device
> and vote according to the current bus speed of the driver.
>
> Signed-off-by: Akash Asthana <akashast@xxxxxxxxxxxxxx>
> ---
> drivers/spi/spi-geni-qcom.c | 65 ++++++++++++++++++++++++++++++++++++++++++---
> 1 file changed, 62 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
> index c397242..a066ef26 100644
> --- a/drivers/spi/spi-geni-qcom.c
> +++ b/drivers/spi/spi-geni-qcom.c
> @@ -608,16 +653,25 @@ static int spi_geni_remove(struct platform_device *pdev)
> spi_unregister_master(spi);
>
> free_irq(mas->irq, spi);
> + geni_spi_icc_put(&mas->se);
> pm_runtime_disable(&pdev->dev);
> return 0;
> }
>
> static int __maybe_unused spi_geni_runtime_suspend(struct device *dev)
> {
> + int ret;
> struct spi_master *spi = dev_get_drvdata(dev);
> struct spi_geni_master *mas = spi_master_get_devdata(spi);
>
> - return geni_se_resources_off(&mas->se);
> + ret = geni_se_resources_off(&mas->se);
> + if (ret)
> + return ret;
> +
> + icc_set_bw(mas->se.icc_path[GENI_TO_CORE], 0, 0);
This causes my SC7180 system to reset at boot time:
[ 3.509652] qcom-qmp-phy 88e9000.phy-wrapper: Registered Qcom-QMP phy
[ 3.516956] qcom-qusb2-phy 88e3000.phy: Registered Qcom-QUSB2 phy
[ 3.524450] geni_se_qup 8c0000.geniqup: Adding to iommu group 4
[ 3.533896] spi_master spi0: will run message pump with realtime priority
<reset>
The system does not reset when passing 'Bps_to_icc(1000)' (=> 1) instead of 0.
