diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/082-0003-USB-bcma-drop-Northstar-PHY-2.0-initialization-code.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.4/082-0003-USB-bcma-drop-Northstar-PHY-2.0-initialization-code.patch | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/082-0003-USB-bcma-drop-Northstar-PHY-2.0-initialization-code.patch b/target/linux/bcm53xx/patches-4.4/082-0003-USB-bcma-drop-Northstar-PHY-2.0-initialization-code.patch new file mode 100644 index 0000000000..0af94e6137 --- /dev/null +++ b/target/linux/bcm53xx/patches-4.4/082-0003-USB-bcma-drop-Northstar-PHY-2.0-initialization-code.patch @@ -0,0 +1,136 @@ +From e8624859dde2ad07633dac7ec86629a516411ea1 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Wed, 21 Sep 2016 18:01:43 +0200 +Subject: [PATCH] USB: bcma: drop Northstar PHY 2.0 initialization code +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This driver should initialize controller only, PHY initialization should +be handled by separated PHY driver. We already have phy-bcm-ns-usb2 in +place so let it makes its duty. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/usb/host/bcma-hcd.c | 80 ++++++++++++++------------------------------- + 1 file changed, 25 insertions(+), 55 deletions(-) + +--- a/drivers/usb/host/bcma-hcd.c ++++ b/drivers/usb/host/bcma-hcd.c +@@ -239,44 +239,10 @@ static int bcma_hcd_usb20_old_arm_init(s + return 0; + } + +-static void bcma_hcd_init_chip_arm_phy(struct bcma_device *dev) +-{ +- struct bcma_device *arm_core; +- void __iomem *dmu; +- +- arm_core = bcma_find_core(dev->bus, BCMA_CORE_ARMCA9); +- if (!arm_core) { +- dev_err(&dev->dev, "can not find ARM Cortex A9 ihost core\n"); +- return; +- } +- +- dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000); +- if (!dmu) { +- dev_err(&dev->dev, "can not map ARM Cortex A9 ihost core\n"); +- return; +- } +- +- /* Unlock DMU PLL settings */ +- iowrite32(0x0000ea68, dmu + 0x180); +- +- /* Write USB 2.0 PLL control setting */ +- iowrite32(0x00dd10c3, dmu + 0x164); +- +- /* Lock DMU PLL settings */ +- iowrite32(0x00000000, dmu + 0x180); +- +- iounmap(dmu); +-} +- +-static void bcma_hcd_init_chip_arm_hc(struct bcma_device *dev) ++static void bcma_hcd_usb20_ns_init_hc(struct bcma_device *dev) + { + u32 val; + +- /* +- * Delay after PHY initialized to ensure HC is ready to be configured +- */ +- usleep_range(1000, 2000); +- + /* Set packet buffer OUT threshold */ + val = bcma_read32(dev, 0x94); + val &= 0xffff; +@@ -287,20 +253,33 @@ static void bcma_hcd_init_chip_arm_hc(st + val = bcma_read32(dev, 0x9c); + val |= 1; + bcma_write32(dev, 0x9c, val); ++ ++ /* ++ * Broadcom initializes PHY and then waits to ensure HC is ready to be ++ * configured. In our case the order is reversed. We just initialized ++ * controller and we let HCD initialize PHY, so let's wait (sleep) now. ++ */ ++ usleep_range(1000, 2000); + } + +-static void bcma_hcd_init_chip_arm(struct bcma_device *dev) ++/** ++ * bcma_hcd_usb20_ns_init - Initialize Northstar USB 2.0 controller ++ */ ++static int bcma_hcd_usb20_ns_init(struct bcma_hcd_device *bcma_hcd) + { +- bcma_core_enable(dev, 0); ++ struct bcma_device *core = bcma_hcd->core; ++ struct bcma_chipinfo *ci = &core->bus->chipinfo; ++ struct device *dev = &core->dev; ++ ++ bcma_core_enable(core, 0); + +- if (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4707 || +- dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM53018) { +- if (dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4707 || +- dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4708) +- bcma_hcd_init_chip_arm_phy(dev); ++ if (ci->id == BCMA_CHIP_ID_BCM4707 || ++ ci->id == BCMA_CHIP_ID_BCM53018) ++ bcma_hcd_usb20_ns_init_hc(core); + +- bcma_hcd_init_chip_arm_hc(dev); +- } ++ of_platform_default_populate(dev->of_node, NULL, dev); ++ ++ return 0; + } + + static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val) +@@ -373,16 +352,7 @@ static int bcma_hcd_usb20_init(struct bc + if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32))) + return -EOPNOTSUPP; + +- switch (dev->id.id) { +- case BCMA_CORE_NS_USB20: +- bcma_hcd_init_chip_arm(dev); +- break; +- case BCMA_CORE_USB20_HOST: +- bcma_hcd_init_chip_mips(dev); +- break; +- default: +- return -ENODEV; +- } ++ bcma_hcd_init_chip_mips(dev); + + /* In AI chips EHCI is addrspace 0, OHCI is 1 */ + ohci_addr = dev->addr_s[0]; +@@ -451,7 +421,7 @@ static int bcma_hcd_probe(struct bcma_de + err = -ENOTSUPP; + break; + case BCMA_CORE_NS_USB20: +- err = bcma_hcd_usb20_init(usb_dev); ++ err = bcma_hcd_usb20_ns_init(usb_dev); + break; + case BCMA_CORE_NS_USB30: + err = bcma_hcd_usb30_init(usb_dev); |