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From: Matthias Kaehlcke <mka@chromium.org>
To: Akash Asthana <akashast@codeaurora.org>
Cc: gregkh@linuxfoundation.org, agross@kernel.org,
	bjorn.andersson@linaro.org, wsa@the-dreams.de,
	broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org,
	linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org,
	devicetree@vger.kernel.org, swboyd@chromium.org,
	mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org,
	linux-serial@vger.kernel.org, dianders@chromium.org
Subject: Re: [PATCH 4/6] spi: spi-geni-qcom: Add interconnect support
Date: Wed, 19 Feb 2020 10:09:50 -0800	[thread overview]
Message-ID: <20200219180950.GA24720@google.com> (raw)
In-Reply-To: <1581946205-27189-5-git-send-email-akashast@codeaurora.org>

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@codeaurora.org>
> ---
>  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.

  parent reply	other threads:[~2020-02-19 18:09 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-17 13:29 [PATCH 0/6] Add interconnect support to UART, I2C, SPI and QSPI Akash Asthana
2020-02-17 13:29 ` Akash Asthana
2020-02-17 13:30 ` [PATCH 1/6] soc: qcom: geni: Support for ICC voting Akash Asthana
2020-02-17 13:30   ` Akash Asthana
2020-02-18  3:03   ` Bjorn Andersson
2020-02-19 13:25     ` Akash Asthana
2020-02-17 13:30 ` [PATCH 2/6] tty: serial: qcom_geni_serial: Add interconnect support Akash Asthana
2020-02-17 13:30   ` Akash Asthana
2020-02-17 16:00   ` Greg KH
2020-02-18  3:15   ` Bjorn Andersson
2020-02-18  3:15     ` Bjorn Andersson
2020-02-19 13:28     ` Akash Asthana
2020-02-18 22:34   ` Matthias Kaehlcke
2020-02-19 13:31     ` Akash Asthana
2020-02-17 13:30 ` [PATCH 3/6] i2c: i2c-qcom-geni: " Akash Asthana
2020-02-17 13:30   ` Akash Asthana
2020-02-18 22:47   ` Matthias Kaehlcke
2020-02-18 22:47     ` Matthias Kaehlcke
2020-02-19 13:47     ` Akash Asthana
2020-02-21  0:24       ` Matthias Kaehlcke
2020-02-17 13:30 ` [PATCH 4/6] spi: spi-geni-qcom: " Akash Asthana
2020-02-17 16:31   ` Mark Brown
2020-02-17 16:31     ` Mark Brown
2020-02-19 18:09   ` Matthias Kaehlcke [this message]
2020-02-21 18:55     ` Matthias Kaehlcke
2020-02-21 18:55       ` Matthias Kaehlcke
2020-02-17 13:30 ` [PATCH 5/6] spi: spi-qcom-qspi: " Akash Asthana
2020-02-17 16:35   ` Mark Brown
2020-02-17 13:30 ` [PATCH 6/6] arm64: dts: sc7180: Add interconnect for QUP and QSPI Akash Asthana
2020-02-18  3:18   ` Bjorn Andersson
2020-02-19 13:49     ` Akash Asthana
2020-02-27 12:11   ` Amit Kucheria
2020-02-27 12:11     ` Amit Kucheria
2020-02-27 17:03     ` Matthias Kaehlcke
2020-02-27 17:03       ` Matthias Kaehlcke
2020-03-09 17:59 ` [PATCH 0/6] Add interconnect support to UART, I2C, SPI " Matthias Kaehlcke
2020-03-09 17:59   ` Matthias Kaehlcke
2020-03-11 13:02   ` Akash Asthana
  -- strict thread matches above, loose matches on Subject: below --
2019-01-22  6:33 [PATCH 0/6] Add interconnect support for GENI QUPs Alok Chauhan
2019-01-22  6:33 ` [PATCH 4/6] spi: spi-geni-qcom: Add interconnect support Alok Chauhan
2019-01-22 20:29   ` Mark Brown
2019-01-23  7:15     ` alokc
2019-01-23 10:58       ` Mark Brown
2019-01-23 16:04   ` Mark Brown
2019-01-24  1:20   ` Evan Green
2019-01-21 11:21 [PATCH 0/6] Add interconnect support for GENI QUPs Alok Chauhan
2019-01-21 11:21 ` [PATCH 4/6] spi: spi-geni-qcom: Add interconnect support Alok Chauhan
2019-01-21 12:43   ` Mark Brown
2019-01-22  6:21     ` alokc

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