From patchwork Wed May 6 07:50:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 245174 List-Id: U-Boot discussion From: jagan at amarulasolutions.com (Jagan Teki) Date: Wed, 6 May 2020 13:20:25 +0530 Subject: [PATCH v2 7/7] usb: dwc3: add dis_del_phy_power_chg_quirk In-Reply-To: <20200506075025.1677-1-jagan@amarulasolutions.com> References: <20200506075025.1677-1-jagan@amarulasolutions.com> Message-ID: <20200506075025.1677-8-jagan@amarulasolutions.com> Add a quirk to clear the GUSB3PIPECTL.DELAYP1TRANS bit, which specifies whether disable delay PHY power change from P0 to P1/P2/P3 when link state changing from U0 to U1/U2/U3 respectively. Reference from below Linux commit, commit <00fe081dc3a3> ("usb: dwc3: add dis_del_phy_power_chg_quirk") Cc: Marek Vasut Signed-off-by: Jagan Teki --- Changes for v2: - new patch drivers/usb/dwc3/core.c | 6 ++++++ drivers/usb/dwc3/core.h | 1 + include/dwc3-uboot.h | 1 + 3 files changed, 8 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 4ec3f6df6a..6e438e5604 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -377,6 +377,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc) if (dwc->dis_u3_susphy_quirk) reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; + if (dwc->dis_del_phy_power_chg_quirk) + reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE; + dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); mdelay(100); @@ -715,6 +718,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev) dwc->rx_detect_poll_quirk = dwc3_dev->rx_detect_poll_quirk; dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk; dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk; + dwc->dis_del_phy_power_chg_quirk = dwc3_dev->dis_del_phy_power_chg_quirk; dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk; if (dwc3_dev->tx_de_emphasis) @@ -975,6 +979,8 @@ void dwc3_of_parse(struct dwc3 *dwc) "snps,dis_u3_susphy_quirk"); dwc->dis_u2_susphy_quirk = dev_read_bool(dev, "snps,dis_u2_susphy_quirk"); + dwc->dis_del_phy_power_chg_quirk = dev_read_bool(dev, + "snps,dis-del-phy-power-chg-quirk"); dwc->tx_de_emphasis_quirk = dev_read_bool(dev, "snps,tx_de_emphasis_quirk"); tmp = dev_read_u8_array_ptr(dev, "snps,tx_de_emphasis", 1); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 1c08a2c5b6..7f45a9c459 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -821,6 +821,7 @@ struct dwc3 { unsigned rx_detect_poll_quirk:1; unsigned dis_u3_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1; + unsigned dis_del_phy_power_chg_quirk:1; unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; diff --git a/include/dwc3-uboot.h b/include/dwc3-uboot.h index 3c9e204cf0..f5086fb946 100644 --- a/include/dwc3-uboot.h +++ b/include/dwc3-uboot.h @@ -32,6 +32,7 @@ struct dwc3_device { unsigned rx_detect_poll_quirk; unsigned dis_u3_susphy_quirk; unsigned dis_u2_susphy_quirk; + unsigned dis_del_phy_power_chg_quirk; unsigned tx_de_emphasis_quirk; unsigned tx_de_emphasis; int index;