From: Wayne Chang <waynec@nvidia.com>
To: Vinod Koul <vkoul@kernel.org>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"krzysztof.kozlowski+dt@linaro.org"
<krzysztof.kozlowski+dt@linaro.org>,
Thierry Reding <treding@nvidia.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
"thierry.reding@gmail.com" <thierry.reding@gmail.com>,
"heikki.krogerus@linux.intel.com"
<heikki.krogerus@linux.intel.com>, Ajay Gupta <ajayg@nvidia.com>,
"kishon@ti.com" <kishon@ti.com>,
"p.zabel@pengutronix.de" <p.zabel@pengutronix.de>,
"balbi@kernel.org" <balbi@kernel.org>,
"mathias.nyman@intel.com" <mathias.nyman@intel.com>,
Jui Chang Kuo <jckuo@nvidia.com>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Sing-Han Chen <singhanc@nvidia.com>,
"linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
"linux-phy@lists.infradead.org" <linux-phy@lists.infradead.org>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>
Subject: Re: [PATCH 08/11] phy: tegra: xusb: Disable trk clk when not using
Date: Mon, 7 Nov 2022 10:37:24 +0000 [thread overview]
Message-ID: <10ebde49-2729-4950-a770-97ef026030f0@nvidia.com> (raw)
In-Reply-To: <Y2Z6Gzd3RmmxMaXO@matsya>
On 11/5/22 22:58, Vinod Koul wrote:
> External email: Use caution opening links or attachments
>
>
> On 24-10-22, 15:41, Wayne Chang wrote:
>
> Consider revision of title to: "Disable trk clk when not in use"
>
>> The change fixes an issue that the pad tracking is a one-time calibration
>> for Tegra186 and Tegra194. We should disable the clk when it is done.
>> The 100us delay is for HW recording the calibration value.
>
> Consider:
>
> "pad tracking is a one-time calibration for Tegra186 and Tegra194. clk
> should be disabled after calibration.
>
> Disable clk after claibration.
>
> While at it add 100us delay HW recording the calibration
>
Thanks for the review.
I'll update the title and commit message in the next patch series.
thanks,
Wayne.
>>
>> Signed-off-by: Wayne Chang <waynec@nvidia.com>
>> ---
>> drivers/phy/tegra/xusb-tegra186.c | 6 ++++--
>> 1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c
>> index 0996ede63387..f121b4ffbbfd 100644
>> --- a/drivers/phy/tegra/xusb-tegra186.c
>> +++ b/drivers/phy/tegra/xusb-tegra186.c
>> @@ -609,6 +609,10 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl)
>> value &= ~USB2_PD_TRK;
>> padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);
>>
>> + udelay(100);
>> +
>> + clk_disable_unprepare(priv->usb2_trk_clk);
>> +
>> mutex_unlock(&padctl->lock);
>> }
>>
>> @@ -633,8 +637,6 @@ static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl)
>> value |= USB2_PD_TRK;
>> padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);
>>
>> - clk_disable_unprepare(priv->usb2_trk_clk);
>> -
>> mutex_unlock(&padctl->lock);
>> }
>>
>> --
>> 2.25.1
>
> --
> ~Vinod
next prev parent reply other threads:[~2022-11-07 10:37 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-24 7:41 [PATCH 00/11] Enable USB host and device functions on Jetson Wayne Chang
2022-10-24 7:41 ` [PATCH 01/11] dt-bindings: usb: tegra-xudc: Add Tegra234 XUSB controller support Wayne Chang
2022-10-25 23:24 ` Rob Herring
2022-11-03 10:36 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 02/11] dt-bindings: usb: Add NVIDIA Tegra XUSB host controller binding Wayne Chang
2022-10-24 13:30 ` Rob Herring
2022-10-24 15:58 ` Jon Hunter
2022-10-24 14:54 ` Rob Herring
2022-10-25 8:02 ` Wayne Chang
2022-10-28 2:19 ` Krzysztof Kozlowski
2022-10-28 9:25 ` Jon Hunter
2022-10-28 11:07 ` Jon Hunter
2022-10-28 11:30 ` Thierry Reding
2022-11-03 10:24 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 03/11] dt-bindings: usb: Add binding for Cypress cypd4226 I2C driver Wayne Chang
2022-10-26 1:07 ` Rob Herring
2022-10-26 7:13 ` Jon Hunter
2022-10-28 12:31 ` Thierry Reding
2022-10-28 12:42 ` Jon Hunter
2022-10-28 14:07 ` Thierry Reding
2022-11-03 10:47 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 04/11] arm64: tegra: Enable XUSB host and device on Jetson AGX Orin Wayne Chang
2022-10-28 2:23 ` Krzysztof Kozlowski
2022-10-28 9:33 ` Jon Hunter
2022-10-28 11:27 ` Krzysztof Kozlowski
2022-10-28 11:34 ` Jon Hunter
2022-10-28 12:38 ` Thierry Reding
2022-10-28 21:48 ` Krzysztof Kozlowski
2022-10-24 7:41 ` [PATCH 05/11] usb: typec: ucsi_ccg: Add OF support Wayne Chang
2022-10-24 7:41 ` [PATCH 06/11] usb: typec: ucsi_ccg: Replace ccgx to well-known regex Wayne Chang
2022-10-24 8:01 ` Heikki Krogerus
2022-10-24 8:29 ` Felipe Balbi
2022-10-24 8:46 ` Heikki Krogerus
2022-10-25 7:26 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 07/11] i2c: nvidia-gpu: " Wayne Chang
2022-11-01 15:07 ` Jon Hunter
2022-11-03 11:36 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 08/11] phy: tegra: xusb: Disable trk clk when not using Wayne Chang
2022-11-05 14:58 ` Vinod Koul
2022-11-07 10:37 ` Wayne Chang [this message]
2022-10-24 7:41 ` [PATCH 09/11] phy: tegra: xusb: Add Tegra234 support Wayne Chang
2022-10-28 12:56 ` Thierry Reding
2022-11-03 11:42 ` Wayne Chang
2022-11-05 15:01 ` Vinod Koul
2022-11-07 10:36 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 10/11] usb: host: xhci-tegra: Add Tegra234 XHCI support Wayne Chang
2022-10-28 13:39 ` Thierry Reding
2022-11-01 14:53 ` Jon Hunter
2022-11-03 11:35 ` Wayne Chang
2022-10-24 7:41 ` [PATCH 11/11] usb: gadget: tegra-xudc: Add Tegra234 support Wayne Chang
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