diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0191-usb-xhci-allow-imod-interval-to-be-configurable.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0191-usb-xhci-allow-imod-interval-to-be-configurable.patch | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/target/linux/mediatek/patches-4.14/0191-usb-xhci-allow-imod-interval-to-be-configurable.patch b/target/linux/mediatek/patches-4.14/0191-usb-xhci-allow-imod-interval-to-be-configurable.patch deleted file mode 100644 index 0f79fa4fd1..0000000000 --- a/target/linux/mediatek/patches-4.14/0191-usb-xhci-allow-imod-interval-to-be-configurable.patch +++ /dev/null @@ -1,138 +0,0 @@ -From c5c72d252dc8e417388386d5767ea790ee8f5b44 Mon Sep 17 00:00:00 2001 -From: Adam Wallis <awallis@codeaurora.org> -Date: Fri, 8 Dec 2017 17:59:13 +0200 -Subject: [PATCH 191/224] usb: xhci: allow imod-interval to be configurable - -The xHCI driver currently has the IMOD set to 160, which -translates to an IMOD interval of 40,000ns (160 * 250)ns - -Commit 0cbd4b34cda9 ("xhci: mediatek: support MTK xHCI host controller") -introduced a QUIRK for the MTK platform to adjust this interval to 20, -which translates to an IMOD interval of 5,000ns (20 * 250)ns. This is -due to the fact that the MTK controller IMOD interval is 8 times -as much as defined in xHCI spec. - -Instead of adding more quirk bits for additional platforms, this patch -introduces the ability for vendors to set the IMOD_INTERVAL as is -optimal for their platform. By using device_property_read_u32() on -"imod-interval-ns", the IMOD INTERVAL can be specified in nano seconds. -If no interval is specified, the default of 40,000ns (IMOD=160) will be -used. - -No bounds checking has been implemented due to the fact that a vendor -may have violated the spec and would need to specify a value outside of -the max 8,000 IRQs/second limit specified in the xHCI spec. - -Tested-by: Chunfeng Yun <chunfeng.yun@mediatek.com> -Reviewed-by: Rob Herring <robh@kernel.org> -Signed-off-by: Adam Wallis <awallis@codeaurora.org> -Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt | 2 ++ - Documentation/devicetree/bindings/usb/usb-xhci.txt | 1 + - drivers/usb/host/xhci-mtk.c | 9 +++++++++ - drivers/usb/host/xhci-pci.c | 3 +++ - drivers/usb/host/xhci-plat.c | 5 +++++ - drivers/usb/host/xhci.c | 6 +----- - drivers/usb/host/xhci.h | 2 ++ - 7 files changed, 23 insertions(+), 5 deletions(-) - ---- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt -+++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt -@@ -46,6 +46,7 @@ Optional properties: - - pinctrl-names : a pinctrl state named "default" must be defined - - pinctrl-0 : pin control group - See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt -+ - imod-interval-ns: default interrupt moderation interval is 5000ns - - Example: - usb30: usb@11270000 { -@@ -66,6 +67,7 @@ usb30: usb@11270000 { - usb3-lpm-capable; - mediatek,syscon-wakeup = <&pericfg>; - mediatek,wakeup-src = <1>; -+ imod-interval-ns = <10000>; - }; - - 2nd: dual-role mode with xHCI driver ---- a/Documentation/devicetree/bindings/usb/usb-xhci.txt -+++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt -@@ -29,6 +29,7 @@ Optional properties: - - clocks: reference to a clock - - usb3-lpm-capable: determines if platform is USB3 LPM capable - - quirk-broken-port-ped: set if the controller has broken port disable mechanism -+ - imod-interval-ns: default interrupt moderation interval is 5000ns - - Example: - usb@f0931000 { ---- a/drivers/usb/host/xhci-mtk.c -+++ b/drivers/usb/host/xhci-mtk.c -@@ -629,6 +629,15 @@ static int xhci_mtk_probe(struct platfor - - xhci = hcd_to_xhci(hcd); - xhci->main_hcd = hcd; -+ -+ /* -+ * imod_interval is the interrupt moderation value in nanoseconds. -+ * The increment interval is 8 times as much as that defined in -+ * the xHCI spec on MTK's controller. -+ */ -+ xhci->imod_interval = 5000; -+ device_property_read_u32(dev, "imod-interval-ns", &xhci->imod_interval); -+ - xhci->shared_hcd = usb_create_shared_hcd(driver, dev, - dev_name(dev), hcd); - if (!xhci->shared_hcd) { ---- a/drivers/usb/host/xhci-pci.c -+++ b/drivers/usb/host/xhci-pci.c -@@ -279,6 +279,9 @@ static int xhci_pci_setup(struct usb_hcd - if (!xhci->sbrn) - pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); - -+ /* imod_interval is the interrupt moderation value in nanoseconds. */ -+ xhci->imod_interval = 40000; -+ - retval = xhci_gen_setup(hcd, xhci_pci_quirks); - if (retval) - return retval; ---- a/drivers/usb/host/xhci-plat.c -+++ b/drivers/usb/host/xhci-plat.c -@@ -269,6 +269,11 @@ static int xhci_plat_probe(struct platfo - if (device_property_read_bool(&pdev->dev, "quirk-broken-port-ped")) - xhci->quirks |= XHCI_BROKEN_PORT_PED; - -+ /* imod_interval is the interrupt moderation value in nanoseconds. */ -+ xhci->imod_interval = 40000; -+ device_property_read_u32(sysdev, "imod-interval-ns", -+ &xhci->imod_interval); -+ - hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0); - if (IS_ERR(hcd->usb_phy)) { - ret = PTR_ERR(hcd->usb_phy); ---- a/drivers/usb/host/xhci.c -+++ b/drivers/usb/host/xhci.c -@@ -610,11 +610,7 @@ int xhci_run(struct usb_hcd *hcd) - "// Set the interrupt modulation register"); - temp = readl(&xhci->ir_set->irq_control); - temp &= ~ER_IRQ_INTERVAL_MASK; -- /* -- * the increment interval is 8 times as much as that defined -- * in xHCI spec on MTK's controller -- */ -- temp |= (u32) ((xhci->quirks & XHCI_MTK_HOST) ? 20 : 160); -+ temp |= (xhci->imod_interval / 250) & ER_IRQ_INTERVAL_MASK; - writel(temp, &xhci->ir_set->irq_control); - - /* Set the HCD state before we enable the irqs */ ---- a/drivers/usb/host/xhci.h -+++ b/drivers/usb/host/xhci.h -@@ -1730,6 +1730,8 @@ struct xhci_hcd { - u8 max_interrupters; - u8 max_ports; - u8 isoc_threshold; -+ /* imod_interval in ns (I * 250ns) */ -+ u32 imod_interval; - int event_ring_max; - /* 4KB min, 128MB max */ - int page_size; |